[pkg] update vendor

35 files changed, 4461 insertions, 0 deletions

diff --git a/vendor/github.com/smartystreets/assertions/.gitignore b/vendor/github.com/smartystreets/assertions/.gitignore
new file mode 100644
index 0000000..07d3c71
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/.gitignore
@@ -0,0 +1,5 @@
+.DS_Store
+Thumbs.db
+*.iml
+/.idea
+coverage.out
diff --git a/vendor/github.com/smartystreets/assertions/.travis.yml b/vendor/github.com/smartystreets/assertions/.travis.yml
new file mode 100644
index 0000000..72df752
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/.travis.yml
@@ -0,0 +1,11 @@
+language: go
+
+go:
+  - 1.x
+
+install:
+  - go get -t ./...
+
+script: go test ./... -v
+
+sudo: false
diff --git a/vendor/github.com/smartystreets/assertions/CONTRIBUTING.md b/vendor/github.com/smartystreets/assertions/CONTRIBUTING.md
new file mode 100644
index 0000000..1820ecb
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/CONTRIBUTING.md
@@ -0,0 +1,12 @@
+# Contributing
+
+In general, the code posted to the [SmartyStreets github organization](https://github.com/smartystreets) is created to solve specific problems at SmartyStreets that are ancillary to our core products in the address verification industry and may or may not be useful to other organizations or developers. Our reason for posting said code isn't necessarily to solicit feedback or contributions from the community but more as a showcase of some of the approaches to solving problems we have adopted.
+
+Having stated that, we do consider issues raised by other githubbers as well as contributions submitted via pull requests. When submitting such a pull request, please follow these guidelines:
+
+- _Look before you leap:_ If the changes you plan to make are significant, it's in everyone's best interest for you to discuss them with a SmartyStreets team member prior to opening a pull request.
+- _License and ownership:_ If modifying the `LICENSE.md` file, limit your changes to fixing typographical mistakes. Do NOT modify the actual terms in the license or the copyright by **SmartyStreets, LLC**. Code submitted to SmartyStreets projects becomes property of SmartyStreets and must be compatible with the associated license.
+- _Testing:_ If the code you are submitting resides in packages/modules covered by automated tests, be sure to add passing tests that cover your changes and assert expected behavior and state. Submit the additional test cases as part of your change set.
+- _Style:_ Match your approach to **naming** and **formatting** with the surrounding code. Basically, the code you submit shouldn't stand out.
+  - "Naming" refers to such constructs as variables, methods, functions, classes, structs, interfaces, packages, modules, directories, files, etc...
+  - "Formatting" refers to such constructs as whitespace, horizontal line length, vertical function length, vertical file length, indentation, curly braces, etc...
diff --git a/vendor/github.com/smartystreets/assertions/LICENSE.md b/vendor/github.com/smartystreets/assertions/LICENSE.md
new file mode 100644
index 0000000..8ea6f94
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/LICENSE.md
@@ -0,0 +1,23 @@
+Copyright (c) 2016 SmartyStreets, LLC
+
+Permission is hereby granted, free of charge, to any person obtaining a copy 
+of this software and associated documentation files (the "Software"), to deal 
+in the Software without restriction, including without limitation the rights 
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
+copies of the Software, and to permit persons to whom the Software is 
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all 
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
+SOFTWARE.
+
+NOTE: Various optional and subordinate components carry their own licensing
+requirements and restrictions.  Use of those components is subject to the terms
+and conditions outlined the respective license of each component.
diff --git a/vendor/github.com/smartystreets/assertions/README.md b/vendor/github.com/smartystreets/assertions/README.md
new file mode 100644
index 0000000..58e51e9
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/README.md
@@ -0,0 +1,611 @@
+# assertions
+--
+    import "github.com/smartystreets/assertions"
+
+Package assertions contains the implementations for all assertions which are
+referenced in goconvey's `convey` package
+(github.com/smartystreets/goconvey/convey) and gunit
+(github.com/smartystreets/gunit) for use with the So(...) method. They can also
+be used in traditional Go test functions and even in applications.
+
+https://smartystreets.com
+
+Many of the assertions lean heavily on work done by Aaron Jacobs in his
+excellent oglematchers library. (https://github.com/jacobsa/oglematchers) The
+ShouldResemble assertion leans heavily on work done by Daniel Jacques in his
+very helpful go-render library. (https://github.com/luci/go-render)
+
+## Usage
+
+#### func  GoConveyMode
+
+```go
+func GoConveyMode(yes bool)
+```
+GoConveyMode provides control over JSON serialization of failures. When using
+the assertions in this package from the convey package JSON results are very
+helpful and can be rendered in a DIFF view. In that case, this function will be
+called with a true value to enable the JSON serialization. By default, the
+assertions in this package will not serializer a JSON result, making standalone
+usage more convenient.
+
+#### func  ShouldAlmostEqual
+
+```go
+func ShouldAlmostEqual(actual interface{}, expected ...interface{}) string
+```
+ShouldAlmostEqual makes sure that two parameters are close enough to being
+equal. The acceptable delta may be specified with a third argument, or a very
+small default delta will be used.
+
+#### func  ShouldBeBetween
+
+```go
+func ShouldBeBetween(actual interface{}, expected ...interface{}) string
+```
+ShouldBeBetween receives exactly three parameters: an actual value, a lower
+bound, and an upper bound. It ensures that the actual value is between both
+bounds (but not equal to either of them).
+
+#### func  ShouldBeBetweenOrEqual
+
+```go
+func ShouldBeBetweenOrEqual(actual interface{}, expected ...interface{}) string
+```
+ShouldBeBetweenOrEqual receives exactly three parameters: an actual value, a
+lower bound, and an upper bound. It ensures that the actual value is between
+both bounds or equal to one of them.
+
+#### func  ShouldBeBlank
+
+```go
+func ShouldBeBlank(actual interface{}, expected ...interface{}) string
+```
+ShouldBeBlank receives exactly 1 string parameter and ensures that it is equal
+to "".
+
+#### func  ShouldBeChronological
+
+```go
+func ShouldBeChronological(actual interface{}, expected ...interface{}) string
+```
+ShouldBeChronological receives a []time.Time slice and asserts that the are in
+chronological order starting with the first time.Time as the earliest.
+
+#### func  ShouldBeEmpty
+
+```go
+func ShouldBeEmpty(actual interface{}, expected ...interface{}) string
+```
+ShouldBeEmpty receives a single parameter (actual) and determines whether or not
+calling len(actual) would return `0`. It obeys the rules specified by the len
+function for determining length: http://golang.org/pkg/builtin/#len
+
+#### func  ShouldBeError
+
+```go
+func ShouldBeError(actual interface{}, expected ...interface{}) string
+```
+ShouldBeError asserts that the first argument implements the error interface. It
+also compares the first argument against the second argument if provided (which
+must be an error message string or another error value).
+
+#### func  ShouldBeFalse
+
+```go
+func ShouldBeFalse(actual interface{}, expected ...interface{}) string
+```
+ShouldBeFalse receives a single parameter and ensures that it is false.
+
+#### func  ShouldBeGreaterThan
+
+```go
+func ShouldBeGreaterThan(actual interface{}, expected ...interface{}) string
+```
+ShouldBeGreaterThan receives exactly two parameters and ensures that the first
+is greater than the second.
+
+#### func  ShouldBeGreaterThanOrEqualTo
+
+```go
+func ShouldBeGreaterThanOrEqualTo(actual interface{}, expected ...interface{}) string
+```
+ShouldBeGreaterThanOrEqualTo receives exactly two parameters and ensures that
+the first is greater than or equal to the second.
+
+#### func  ShouldBeIn
+
+```go
+func ShouldBeIn(actual interface{}, expected ...interface{}) string
+```
+ShouldBeIn receives at least 2 parameters. The first is a proposed member of the
+collection that is passed in either as the second parameter, or of the
+collection that is comprised of all the remaining parameters. This assertion
+ensures that the proposed member is in the collection (using ShouldEqual).
+
+#### func  ShouldBeLessThan
+
+```go
+func ShouldBeLessThan(actual interface{}, expected ...interface{}) string
+```
+ShouldBeLessThan receives exactly two parameters and ensures that the first is
+less than the second.
+
+#### func  ShouldBeLessThanOrEqualTo
+
+```go
+func ShouldBeLessThanOrEqualTo(actual interface{}, expected ...interface{}) string
+```
+ShouldBeLessThan receives exactly two parameters and ensures that the first is
+less than or equal to the second.
+
+#### func  ShouldBeNil
+
+```go
+func ShouldBeNil(actual interface{}, expected ...interface{}) string
+```
+ShouldBeNil receives a single parameter and ensures that it is nil.
+
+#### func  ShouldBeTrue
+
+```go
+func ShouldBeTrue(actual interface{}, expected ...interface{}) string
+```
+ShouldBeTrue receives a single parameter and ensures that it is true.
+
+#### func  ShouldBeZeroValue
+
+```go
+func ShouldBeZeroValue(actual interface{}, expected ...interface{}) string
+```
+ShouldBeZeroValue receives a single parameter and ensures that it is the Go
+equivalent of the default value, or "zero" value.
+
+#### func  ShouldContain
+
+```go
+func ShouldContain(actual interface{}, expected ...interface{}) string
+```
+ShouldContain receives exactly two parameters. The first is a slice and the
+second is a proposed member. Membership is determined using ShouldEqual.
+
+#### func  ShouldContainKey
+
+```go
+func ShouldContainKey(actual interface{}, expected ...interface{}) string
+```
+ShouldContainKey receives exactly two parameters. The first is a map and the
+second is a proposed key. Keys are compared with a simple '=='.
+
+#### func  ShouldContainSubstring
+
+```go
+func ShouldContainSubstring(actual interface{}, expected ...interface{}) string
+```
+ShouldContainSubstring receives exactly 2 string parameters and ensures that the
+first contains the second as a substring.
+
+#### func  ShouldEndWith
+
+```go
+func ShouldEndWith(actual interface{}, expected ...interface{}) string
+```
+ShouldEndWith receives exactly 2 string parameters and ensures that the first
+ends with the second.
+
+#### func  ShouldEqual
+
+```go
+func ShouldEqual(actual interface{}, expected ...interface{}) string
+```
+ShouldEqual receives exactly two parameters and does an equality check using the
+following semantics: 1. If the expected and actual values implement an Equal
+method in the form `func (this T) Equal(that T) bool` then call the method. If
+true, they are equal. 2. The expected and actual values are judged equal or not
+by oglematchers.Equals.
+
+#### func  ShouldEqualJSON
+
+```go
+func ShouldEqualJSON(actual interface{}, expected ...interface{}) string
+```
+ShouldEqualJSON receives exactly two parameters and does an equality check by
+marshalling to JSON
+
+#### func  ShouldEqualTrimSpace
+
+```go
+func ShouldEqualTrimSpace(actual interface{}, expected ...interface{}) string
+```
+ShouldEqualTrimSpace receives exactly 2 string parameters and ensures that the
+first is equal to the second after removing all leading and trailing whitespace
+using strings.TrimSpace(first).
+
+#### func  ShouldEqualWithout
+
+```go
+func ShouldEqualWithout(actual interface{}, expected ...interface{}) string
+```
+ShouldEqualWithout receives exactly 3 string parameters and ensures that the
+first is equal to the second after removing all instances of the third from the
+first using strings.Replace(first, third, "", -1).
+
+#### func  ShouldHappenAfter
+
+```go
+func ShouldHappenAfter(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenAfter receives exactly 2 time.Time arguments and asserts that the
+first happens after the second.
+
+#### func  ShouldHappenBefore
+
+```go
+func ShouldHappenBefore(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenBefore receives exactly 2 time.Time arguments and asserts that the
+first happens before the second.
+
+#### func  ShouldHappenBetween
+
+```go
+func ShouldHappenBetween(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenBetween receives exactly 3 time.Time arguments and asserts that the
+first happens between (not on) the second and third.
+
+#### func  ShouldHappenOnOrAfter
+
+```go
+func ShouldHappenOnOrAfter(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenOnOrAfter receives exactly 2 time.Time arguments and asserts that
+the first happens on or after the second.
+
+#### func  ShouldHappenOnOrBefore
+
+```go
+func ShouldHappenOnOrBefore(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenOnOrBefore receives exactly 2 time.Time arguments and asserts that
+the first happens on or before the second.
+
+#### func  ShouldHappenOnOrBetween
+
+```go
+func ShouldHappenOnOrBetween(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenOnOrBetween receives exactly 3 time.Time arguments and asserts that
+the first happens between or on the second and third.
+
+#### func  ShouldHappenWithin
+
+```go
+func ShouldHappenWithin(actual interface{}, expected ...interface{}) string
+```
+ShouldHappenWithin receives a time.Time, a time.Duration, and a time.Time (3
+arguments) and asserts that the first time.Time happens within or on the
+duration specified relative to the other time.Time.
+
+#### func  ShouldHaveLength
+
+```go
+func ShouldHaveLength(actual interface{}, expected ...interface{}) string
+```
+ShouldHaveLength receives 2 parameters. The first is a collection to check the
+length of, the second being the expected length. It obeys the rules specified by
+the len function for determining length: http://golang.org/pkg/builtin/#len
+
+#### func  ShouldHaveSameTypeAs
+
+```go
+func ShouldHaveSameTypeAs(actual interface{}, expected ...interface{}) string
+```
+ShouldHaveSameTypeAs receives exactly two parameters and compares their
+underlying types for equality.
+
+#### func  ShouldImplement
+
+```go
+func ShouldImplement(actual interface{}, expectedList ...interface{}) string
+```
+ShouldImplement receives exactly two parameters and ensures that the first
+implements the interface type of the second.
+
+#### func  ShouldNotAlmostEqual
+
+```go
+func ShouldNotAlmostEqual(actual interface{}, expected ...interface{}) string
+```
+ShouldNotAlmostEqual is the inverse of ShouldAlmostEqual
+
+#### func  ShouldNotBeBetween
+
+```go
+func ShouldNotBeBetween(actual interface{}, expected ...interface{}) string
+```
+ShouldNotBeBetween receives exactly three parameters: an actual value, a lower
+bound, and an upper bound. It ensures that the actual value is NOT between both
+bounds.
+
+#### func  ShouldNotBeBetweenOrEqual
+
+```go
+func ShouldNotBeBetweenOrEqual(actual interface{}, expected ...interface{}) string
+```
+ShouldNotBeBetweenOrEqual receives exactly three parameters: an actual value, a
+lower bound, and an upper bound. It ensures that the actual value is nopt
+between the bounds nor equal to either of them.
+
+#### func  ShouldNotBeBlank
+
+```go
+func ShouldNotBeBlank(actual interface{}, expected ...interface{}) string
+```
+ShouldNotBeBlank receives exactly 1 string parameter and ensures that it is
+equal to "".
+
+#### func  ShouldNotBeEmpty
+
+```go
+func ShouldNotBeEmpty(actual interface{}, expected ...interface{}) string
+```
+ShouldNotBeEmpty receives a single parameter (actual) and determines whether or
+not calling len(actual) would return a value greater than zero. It obeys the
+rules specified by the `len` function for determining length:
+http://golang.org/pkg/builtin/#len
+
+#### func  ShouldNotBeIn
+
+```go
+func ShouldNotBeIn(actual interface{}, expected ...interface{}) string
+```
+ShouldNotBeIn receives at least 2 parameters. The first is a proposed member of
+the collection that is passed in either as the second parameter, or of the
+collection that is comprised of all the remaining parameters. This assertion
+ensures that the proposed member is NOT in the collection (using ShouldEqual).
+
+#### func  ShouldNotBeNil
+
+```go
+func ShouldNotBeNil(actual interface{}, expected ...interface{}) string
+```
+ShouldNotBeNil receives a single parameter and ensures that it is not nil.
+
+#### func  ShouldNotBeZeroValue
+
+```go
+func ShouldNotBeZeroValue(actual interface{}, expected ...interface{}) string
+```
+ShouldBeZeroValue receives a single parameter and ensures that it is NOT the Go
+equivalent of the default value, or "zero" value.
+
+#### func  ShouldNotContain
+
+```go
+func ShouldNotContain(actual interface{}, expected ...interface{}) string
+```
+ShouldNotContain receives exactly two parameters. The first is a slice and the
+second is a proposed member. Membership is determinied using ShouldEqual.
+
+#### func  ShouldNotContainKey
+
+```go
+func ShouldNotContainKey(actual interface{}, expected ...interface{}) string
+```
+ShouldNotContainKey receives exactly two parameters. The first is a map and the
+second is a proposed absent key. Keys are compared with a simple '=='.
+
+#### func  ShouldNotContainSubstring
+
+```go
+func ShouldNotContainSubstring(actual interface{}, expected ...interface{}) string
+```
+ShouldNotContainSubstring receives exactly 2 string parameters and ensures that
+the first does NOT contain the second as a substring.
+
+#### func  ShouldNotEndWith
+
+```go
+func ShouldNotEndWith(actual interface{}, expected ...interface{}) string
+```
+ShouldEndWith receives exactly 2 string parameters and ensures that the first
+does not end with the second.
+
+#### func  ShouldNotEqual
+
+```go
+func ShouldNotEqual(actual interface{}, expected ...interface{}) string
+```
+ShouldNotEqual receives exactly two parameters and does an inequality check. See
+ShouldEqual for details on how equality is determined.
+
+#### func  ShouldNotHappenOnOrBetween
+
+```go
+func ShouldNotHappenOnOrBetween(actual interface{}, expected ...interface{}) string
+```
+ShouldNotHappenOnOrBetween receives exactly 3 time.Time arguments and asserts
+that the first does NOT happen between or on the second or third.
+
+#### func  ShouldNotHappenWithin
+
+```go
+func ShouldNotHappenWithin(actual interface{}, expected ...interface{}) string
+```
+ShouldNotHappenWithin receives a time.Time, a time.Duration, and a time.Time (3
+arguments) and asserts that the first time.Time does NOT happen within or on the
+duration specified relative to the other time.Time.
+
+#### func  ShouldNotHaveSameTypeAs
+
+```go
+func ShouldNotHaveSameTypeAs(actual interface{}, expected ...interface{}) string
+```
+ShouldNotHaveSameTypeAs receives exactly two parameters and compares their
+underlying types for inequality.
+
+#### func  ShouldNotImplement
+
+```go
+func ShouldNotImplement(actual interface{}, expectedList ...interface{}) string
+```
+ShouldNotImplement receives exactly two parameters and ensures that the first
+does NOT implement the interface type of the second.
+
+#### func  ShouldNotPanic
+
+```go
+func ShouldNotPanic(actual interface{}, expected ...interface{}) (message string)
+```
+ShouldNotPanic receives a void, niladic function and expects to execute the
+function without any panic.
+
+#### func  ShouldNotPanicWith
+
+```go
+func ShouldNotPanicWith(actual interface{}, expected ...interface{}) (message string)
+```
+ShouldNotPanicWith receives a void, niladic function and expects to recover a
+panic whose content differs from the second argument.
+
+#### func  ShouldNotPointTo
+
+```go
+func ShouldNotPointTo(actual interface{}, expected ...interface{}) string
+```
+ShouldNotPointTo receives exactly two parameters and checks to see that they
+point to different addresess.
+
+#### func  ShouldNotResemble
+
+```go
+func ShouldNotResemble(actual interface{}, expected ...interface{}) string
+```
+ShouldNotResemble receives exactly two parameters and does an inverse deep equal
+check (see reflect.DeepEqual)
+
+#### func  ShouldNotStartWith
+
+```go
+func ShouldNotStartWith(actual interface{}, expected ...interface{}) string
+```
+ShouldNotStartWith receives exactly 2 string parameters and ensures that the
+first does not start with the second.
+
+#### func  ShouldPanic
+
+```go
+func ShouldPanic(actual interface{}, expected ...interface{}) (message string)
+```
+ShouldPanic receives a void, niladic function and expects to recover a panic.
+
+#### func  ShouldPanicWith
+
+```go
+func ShouldPanicWith(actual interface{}, expected ...interface{}) (message string)
+```
+ShouldPanicWith receives a void, niladic function and expects to recover a panic
+with the second argument as the content.
+
+#### func  ShouldPointTo
+
+```go
+func ShouldPointTo(actual interface{}, expected ...interface{}) string
+```
+ShouldPointTo receives exactly two parameters and checks to see that they point
+to the same address.
+
+#### func  ShouldResemble
+
+```go
+func ShouldResemble(actual interface{}, expected ...interface{}) string
+```
+ShouldResemble receives exactly two parameters and does a deep equal check (see
+reflect.DeepEqual)
+
+#### func  ShouldStartWith
+
+```go
+func ShouldStartWith(actual interface{}, expected ...interface{}) string
+```
+ShouldStartWith receives exactly 2 string parameters and ensures that the first
+starts with the second.
+
+#### func  So
+
+```go
+func So(actual interface{}, assert assertion, expected ...interface{}) (bool, string)
+```
+So is a convenience function (as opposed to an inconvenience function?) for
+running assertions on arbitrary arguments in any context, be it for testing or
+even application logging. It allows you to perform assertion-like behavior (and
+get nicely formatted messages detailing discrepancies) but without the program
+blowing up or panicking. All that is required is to import this package and call
+`So` with one of the assertions exported by this package as the second
+parameter. The first return parameter is a boolean indicating if the assertion
+was true. The second return parameter is the well-formatted message showing why
+an assertion was incorrect, or blank if the assertion was correct.
+
+Example:
+
+    if ok, message := So(x, ShouldBeGreaterThan, y); !ok {
+         log.Println(message)
+    }
+
+For an alternative implementation of So (that provides more flexible return
+options) see the `So` function in the package at
+github.com/smartystreets/assertions/assert.
+
+#### type Assertion
+
+```go
+type Assertion struct {
+}
+```
+
+
+#### func  New
+
+```go
+func New(t testingT) *Assertion
+```
+New swallows the *testing.T struct and prints failed assertions using t.Error.
+Example: assertions.New(t).So(1, should.Equal, 1)
+
+#### func (*Assertion) Failed
+
+```go
+func (this *Assertion) Failed() bool
+```
+Failed reports whether any calls to So (on this Assertion instance) have failed.
+
+#### func (*Assertion) So
+
+```go
+func (this *Assertion) So(actual interface{}, assert assertion, expected ...interface{}) bool
+```
+So calls the standalone So function and additionally, calls t.Error in failure
+scenarios.
+
+#### type FailureView
+
+```go
+type FailureView struct {
+	Message  string `json:"Message"`
+	Expected string `json:"Expected"`
+	Actual   string `json:"Actual"`
+}
+```
+
+This struct is also declared in
+github.com/smartystreets/goconvey/convey/reporting. The json struct tags should
+be equal in both declarations.
+
+#### type Serializer
+
+```go
+type Serializer interface {
+	// contains filtered or unexported methods
+}
+```
diff --git a/vendor/github.com/smartystreets/assertions/collections.go b/vendor/github.com/smartystreets/assertions/collections.go
new file mode 100644
index 0000000..b534d4b
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/collections.go
@@ -0,0 +1,244 @@
+package assertions
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/smartystreets/assertions/internal/oglematchers"
+)
+
+// ShouldContain receives exactly two parameters. The first is a slice and the
+// second is a proposed member. Membership is determined using ShouldEqual.
+func ShouldContain(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	if matchError := oglematchers.Contains(expected[0]).Matches(actual); matchError != nil {
+		typeName := reflect.TypeOf(actual)
+
+		if fmt.Sprintf("%v", matchError) == "which is not a slice or array" {
+			return fmt.Sprintf(shouldHaveBeenAValidCollection, typeName)
+		}
+		return fmt.Sprintf(shouldHaveContained, typeName, expected[0])
+	}
+	return success
+}
+
+// ShouldNotContain receives exactly two parameters. The first is a slice and the
+// second is a proposed member. Membership is determinied using ShouldEqual.
+func ShouldNotContain(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+	typeName := reflect.TypeOf(actual)
+
+	if matchError := oglematchers.Contains(expected[0]).Matches(actual); matchError != nil {
+		if fmt.Sprintf("%v", matchError) == "which is not a slice or array" {
+			return fmt.Sprintf(shouldHaveBeenAValidCollection, typeName)
+		}
+		return success
+	}
+	return fmt.Sprintf(shouldNotHaveContained, typeName, expected[0])
+}
+
+// ShouldContainKey receives exactly two parameters. The first is a map and the
+// second is a proposed key. Keys are compared with a simple '=='.
+func ShouldContainKey(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	keys, isMap := mapKeys(actual)
+	if !isMap {
+		return fmt.Sprintf(shouldHaveBeenAValidMap, reflect.TypeOf(actual))
+	}
+
+	if !keyFound(keys, expected[0]) {
+		return fmt.Sprintf(shouldHaveContainedKey, reflect.TypeOf(actual), expected)
+	}
+
+	return ""
+}
+
+// ShouldNotContainKey receives exactly two parameters. The first is a map and the
+// second is a proposed absent key. Keys are compared with a simple '=='.
+func ShouldNotContainKey(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	keys, isMap := mapKeys(actual)
+	if !isMap {
+		return fmt.Sprintf(shouldHaveBeenAValidMap, reflect.TypeOf(actual))
+	}
+
+	if keyFound(keys, expected[0]) {
+		return fmt.Sprintf(shouldNotHaveContainedKey, reflect.TypeOf(actual), expected)
+	}
+
+	return ""
+}
+
+func mapKeys(m interface{}) ([]reflect.Value, bool) {
+	value := reflect.ValueOf(m)
+	if value.Kind() != reflect.Map {
+		return nil, false
+	}
+	return value.MapKeys(), true
+}
+func keyFound(keys []reflect.Value, expectedKey interface{}) bool {
+	found := false
+	for _, key := range keys {
+		if key.Interface() == expectedKey {
+			found = true
+		}
+	}
+	return found
+}
+
+// ShouldBeIn receives at least 2 parameters. The first is a proposed member of the collection
+// that is passed in either as the second parameter, or of the collection that is comprised
+// of all the remaining parameters. This assertion ensures that the proposed member is in
+// the collection (using ShouldEqual).
+func ShouldBeIn(actual interface{}, expected ...interface{}) string {
+	if fail := atLeast(1, expected); fail != success {
+		return fail
+	}
+
+	if len(expected) == 1 {
+		return shouldBeIn(actual, expected[0])
+	}
+	return shouldBeIn(actual, expected)
+}
+func shouldBeIn(actual interface{}, expected interface{}) string {
+	if matchError := oglematchers.Contains(actual).Matches(expected); matchError != nil {
+		return fmt.Sprintf(shouldHaveBeenIn, actual, reflect.TypeOf(expected))
+	}
+	return success
+}
+
+// ShouldNotBeIn receives at least 2 parameters. The first is a proposed member of the collection
+// that is passed in either as the second parameter, or of the collection that is comprised
+// of all the remaining parameters. This assertion ensures that the proposed member is NOT in
+// the collection (using ShouldEqual).
+func ShouldNotBeIn(actual interface{}, expected ...interface{}) string {
+	if fail := atLeast(1, expected); fail != success {
+		return fail
+	}
+
+	if len(expected) == 1 {
+		return shouldNotBeIn(actual, expected[0])
+	}
+	return shouldNotBeIn(actual, expected)
+}
+func shouldNotBeIn(actual interface{}, expected interface{}) string {
+	if matchError := oglematchers.Contains(actual).Matches(expected); matchError == nil {
+		return fmt.Sprintf(shouldNotHaveBeenIn, actual, reflect.TypeOf(expected))
+	}
+	return success
+}
+
+// ShouldBeEmpty receives a single parameter (actual) and determines whether or not
+// calling len(actual) would return `0`. It obeys the rules specified by the len
+// function for determining length: http://golang.org/pkg/builtin/#len
+func ShouldBeEmpty(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+
+	if actual == nil {
+		return success
+	}
+
+	value := reflect.ValueOf(actual)
+	switch value.Kind() {
+	case reflect.Slice:
+		if value.Len() == 0 {
+			return success
+		}
+	case reflect.Chan:
+		if value.Len() == 0 {
+			return success
+		}
+	case reflect.Map:
+		if value.Len() == 0 {
+			return success
+		}
+	case reflect.String:
+		if value.Len() == 0 {
+			return success
+		}
+	case reflect.Ptr:
+		elem := value.Elem()
+		kind := elem.Kind()
+		if (kind == reflect.Slice || kind == reflect.Array) && elem.Len() == 0 {
+			return success
+		}
+	}
+
+	return fmt.Sprintf(shouldHaveBeenEmpty, actual)
+}
+
+// ShouldNotBeEmpty receives a single parameter (actual) and determines whether or not
+// calling len(actual) would return a value greater than zero. It obeys the rules
+// specified by the `len` function for determining length: http://golang.org/pkg/builtin/#len
+func ShouldNotBeEmpty(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+
+	if empty := ShouldBeEmpty(actual, expected...); empty != success {
+		return success
+	}
+	return fmt.Sprintf(shouldNotHaveBeenEmpty, actual)
+}
+
+// ShouldHaveLength receives 2 parameters. The first is a collection to check
+// the length of, the second being the expected length. It obeys the rules
+// specified by the len function for determining length:
+// http://golang.org/pkg/builtin/#len
+func ShouldHaveLength(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	var expectedLen int64
+	lenValue := reflect.ValueOf(expected[0])
+	switch lenValue.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		expectedLen = lenValue.Int()
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		expectedLen = int64(lenValue.Uint())
+	default:
+		return fmt.Sprintf(shouldHaveBeenAValidInteger, reflect.TypeOf(expected[0]))
+	}
+
+	if expectedLen < 0 {
+		return fmt.Sprintf(shouldHaveBeenAValidLength, expected[0])
+	}
+
+	value := reflect.ValueOf(actual)
+	switch value.Kind() {
+	case reflect.Slice,
+		reflect.Chan,
+		reflect.Map,
+		reflect.String:
+		if int64(value.Len()) == expectedLen {
+			return success
+		} else {
+			return fmt.Sprintf(shouldHaveHadLength, expectedLen, value.Len(), actual)
+		}
+	case reflect.Ptr:
+		elem := value.Elem()
+		kind := elem.Kind()
+		if kind == reflect.Slice || kind == reflect.Array {
+			if int64(elem.Len()) == expectedLen {
+				return success
+			} else {
+				return fmt.Sprintf(shouldHaveHadLength, expectedLen, elem.Len(), actual)
+			}
+		}
+	}
+	return fmt.Sprintf(shouldHaveBeenAValidCollection, reflect.TypeOf(actual))
+}
diff --git a/vendor/github.com/smartystreets/assertions/doc.go b/vendor/github.com/smartystreets/assertions/doc.go
new file mode 100644
index 0000000..ba30a92
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/doc.go
@@ -0,0 +1,109 @@
+// Package assertions contains the implementations for all assertions which
+// are referenced in goconvey's `convey` package
+// (github.com/smartystreets/goconvey/convey) and gunit (github.com/smartystreets/gunit)
+// for use with the So(...) method.
+// They can also be used in traditional Go test functions and even in
+// applications.
+//
+// https://smartystreets.com
+//
+// Many of the assertions lean heavily on work done by Aaron Jacobs in his excellent oglematchers library.
+// (https://github.com/jacobsa/oglematchers)
+// The ShouldResemble assertion leans heavily on work done by Daniel Jacques in his very helpful go-render library.
+// (https://github.com/luci/go-render)
+package assertions
+
+import (
+	"fmt"
+	"runtime"
+)
+
+// By default we use a no-op serializer. The actual Serializer provides a JSON
+// representation of failure results on selected assertions so the goconvey
+// web UI can display a convenient diff.
+var serializer Serializer = new(noopSerializer)
+
+// GoConveyMode provides control over JSON serialization of failures. When
+// using the assertions in this package from the convey package JSON results
+// are very helpful and can be rendered in a DIFF view. In that case, this function
+// will be called with a true value to enable the JSON serialization. By default,
+// the assertions in this package will not serializer a JSON result, making
+// standalone usage more convenient.
+func GoConveyMode(yes bool) {
+	if yes {
+		serializer = newSerializer()
+	} else {
+		serializer = new(noopSerializer)
+	}
+}
+
+type testingT interface {
+	Error(args ...interface{})
+}
+
+type Assertion struct {
+	t      testingT
+	failed bool
+}
+
+// New swallows the *testing.T struct and prints failed assertions using t.Error.
+// Example: assertions.New(t).So(1, should.Equal, 1)
+func New(t testingT) *Assertion {
+	return &Assertion{t: t}
+}
+
+// Failed reports whether any calls to So (on this Assertion instance) have failed.
+func (this *Assertion) Failed() bool {
+	return this.failed
+}
+
+// So calls the standalone So function and additionally, calls t.Error in failure scenarios.
+func (this *Assertion) So(actual interface{}, assert assertion, expected ...interface{}) bool {
+	ok, result := So(actual, assert, expected...)
+	if !ok {
+		this.failed = true
+		_, file, line, _ := runtime.Caller(1)
+		this.t.Error(fmt.Sprintf("\n%s:%d\n%s", file, line, result))
+	}
+	return ok
+}
+
+// So is a convenience function (as opposed to an inconvenience function?)
+// for running assertions on arbitrary arguments in any context, be it for testing or even
+// application logging. It allows you to perform assertion-like behavior (and get nicely
+// formatted messages detailing discrepancies) but without the program blowing up or panicking.
+// All that is required is to import this package and call `So` with one of the assertions
+// exported by this package as the second parameter.
+// The first return parameter is a boolean indicating if the assertion was true. The second
+// return parameter is the well-formatted message showing why an assertion was incorrect, or
+// blank if the assertion was correct.
+//
+// Example:
+//
+//   if ok, message := So(x, ShouldBeGreaterThan, y); !ok {
+//        log.Println(message)
+//   }
+//
+// For an alternative implementation of So (that provides more flexible return options)
+// see the `So` function in the package at github.com/smartystreets/assertions/assert.
+func So(actual interface{}, assert assertion, expected ...interface{}) (bool, string) {
+	if result := so(actual, assert, expected...); len(result) == 0 {
+		return true, result
+	} else {
+		return false, result
+	}
+}
+
+// so is like So, except that it only returns the string message, which is blank if the
+// assertion passed. Used to facilitate testing.
+func so(actual interface{}, assert func(interface{}, ...interface{}) string, expected ...interface{}) string {
+	return assert(actual, expected...)
+}
+
+// assertion is an alias for a function with a signature that the So()
+// function can handle. Any future or custom assertions should conform to this
+// method signature. The return value should be an empty string if the assertion
+// passes and a well-formed failure message if not.
+type assertion func(actual interface{}, expected ...interface{}) string
+
+////////////////////////////////////////////////////////////////////////////
diff --git a/vendor/github.com/smartystreets/assertions/equal_method.go b/vendor/github.com/smartystreets/assertions/equal_method.go
new file mode 100644
index 0000000..c4fc38f
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/equal_method.go
@@ -0,0 +1,75 @@
+package assertions
+
+import "reflect"
+
+type equalityMethodSpecification struct {
+	a interface{}
+	b interface{}
+
+	aType reflect.Type
+	bType reflect.Type
+
+	equalMethod reflect.Value
+}
+
+func newEqualityMethodSpecification(a, b interface{}) *equalityMethodSpecification {
+	return &equalityMethodSpecification{
+		a: a,
+		b: b,
+	}
+}
+
+func (this *equalityMethodSpecification) IsSatisfied() bool {
+	if !this.bothAreSameType() {
+		return false
+	}
+	if !this.typeHasEqualMethod() {
+		return false
+	}
+	if !this.equalMethodReceivesSameTypeForComparison() {
+		return false
+	}
+	if !this.equalMethodReturnsBool() {
+		return false
+	}
+	return true
+}
+
+func (this *equalityMethodSpecification) bothAreSameType() bool {
+	this.aType = reflect.TypeOf(this.a)
+	if this.aType == nil {
+		return false
+	}
+	if this.aType.Kind() == reflect.Ptr {
+		this.aType = this.aType.Elem()
+	}
+	this.bType = reflect.TypeOf(this.b)
+	return this.aType == this.bType
+}
+func (this *equalityMethodSpecification) typeHasEqualMethod() bool {
+	aInstance := reflect.ValueOf(this.a)
+	this.equalMethod = aInstance.MethodByName("Equal")
+	return this.equalMethod != reflect.Value{}
+}
+
+func (this *equalityMethodSpecification) equalMethodReceivesSameTypeForComparison() bool {
+	signature := this.equalMethod.Type()
+	return signature.NumIn() == 1 && signature.In(0) == this.aType
+}
+
+func (this *equalityMethodSpecification) equalMethodReturnsBool() bool {
+	signature := this.equalMethod.Type()
+	return signature.NumOut() == 1 && signature.Out(0) == reflect.TypeOf(true)
+}
+
+func (this *equalityMethodSpecification) AreEqual() bool {
+	a := reflect.ValueOf(this.a)
+	b := reflect.ValueOf(this.b)
+	return areEqual(a, b) && areEqual(b, a)
+}
+func areEqual(receiver reflect.Value, argument reflect.Value) bool {
+	equalMethod := receiver.MethodByName("Equal")
+	argumentList := []reflect.Value{argument}
+	result := equalMethod.Call(argumentList)
+	return result[0].Bool()
+}
diff --git a/vendor/github.com/smartystreets/assertions/equality.go b/vendor/github.com/smartystreets/assertions/equality.go
new file mode 100644
index 0000000..6c10d24
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/equality.go
@@ -0,0 +1,328 @@
+package assertions
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"math"
+	"reflect"
+	"strings"
+
+	"github.com/smartystreets/assertions/internal/go-render/render"
+	"github.com/smartystreets/assertions/internal/oglematchers"
+)
+
+// ShouldEqual receives exactly two parameters and does an equality check
+// using the following semantics:
+// 1. If the expected and actual values implement an Equal method in the form
+// `func (this T) Equal(that T) bool` then call the method. If true, they are equal.
+// 2. The expected and actual values are judged equal or not by oglematchers.Equals.
+func ShouldEqual(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+	return shouldEqual(actual, expected[0])
+}
+func shouldEqual(actual, expected interface{}) (message string) {
+	defer func() {
+		if r := recover(); r != nil {
+			message = serializer.serialize(expected, actual, fmt.Sprintf(shouldHaveBeenEqual, expected, actual))
+		}
+	}()
+
+	if specification := newEqualityMethodSpecification(expected, actual); specification.IsSatisfied() {
+		if specification.AreEqual() {
+			return success
+		} else {
+			message = fmt.Sprintf(shouldHaveBeenEqual, expected, actual)
+			return serializer.serialize(expected, actual, message)
+		}
+	}
+	if matchError := oglematchers.Equals(expected).Matches(actual); matchError != nil {
+		expectedSyntax := fmt.Sprintf("%v", expected)
+		actualSyntax := fmt.Sprintf("%v", actual)
+		if expectedSyntax == actualSyntax && reflect.TypeOf(expected) != reflect.TypeOf(actual) {
+			message = fmt.Sprintf(shouldHaveBeenEqualTypeMismatch, expected, expected, actual, actual)
+		} else {
+			message = fmt.Sprintf(shouldHaveBeenEqual, expected, actual)
+		}
+		return serializer.serialize(expected, actual, message)
+	}
+
+	return success
+}
+
+// ShouldNotEqual receives exactly two parameters and does an inequality check.
+// See ShouldEqual for details on how equality is determined.
+func ShouldNotEqual(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	} else if ShouldEqual(actual, expected[0]) == success {
+		return fmt.Sprintf(shouldNotHaveBeenEqual, actual, expected[0])
+	}
+	return success
+}
+
+// ShouldAlmostEqual makes sure that two parameters are close enough to being equal.
+// The acceptable delta may be specified with a third argument,
+// or a very small default delta will be used.
+func ShouldAlmostEqual(actual interface{}, expected ...interface{}) string {
+	actualFloat, expectedFloat, deltaFloat, err := cleanAlmostEqualInput(actual, expected...)
+
+	if err != "" {
+		return err
+	}
+
+	if math.Abs(actualFloat-expectedFloat) <= deltaFloat {
+		return success
+	} else {
+		return fmt.Sprintf(shouldHaveBeenAlmostEqual, actualFloat, expectedFloat)
+	}
+}
+
+// ShouldNotAlmostEqual is the inverse of ShouldAlmostEqual
+func ShouldNotAlmostEqual(actual interface{}, expected ...interface{}) string {
+	actualFloat, expectedFloat, deltaFloat, err := cleanAlmostEqualInput(actual, expected...)
+
+	if err != "" {
+		return err
+	}
+
+	if math.Abs(actualFloat-expectedFloat) > deltaFloat {
+		return success
+	} else {
+		return fmt.Sprintf(shouldHaveNotBeenAlmostEqual, actualFloat, expectedFloat)
+	}
+}
+
+func cleanAlmostEqualInput(actual interface{}, expected ...interface{}) (float64, float64, float64, string) {
+	deltaFloat := 0.0000000001
+
+	if len(expected) == 0 {
+		return 0.0, 0.0, 0.0, "This assertion requires exactly one comparison value and an optional delta (you provided neither)"
+	} else if len(expected) == 2 {
+		delta, err := getFloat(expected[1])
+
+		if err != nil {
+			return 0.0, 0.0, 0.0, "The delta value " + err.Error()
+		}
+
+		deltaFloat = delta
+	} else if len(expected) > 2 {
+		return 0.0, 0.0, 0.0, "This assertion requires exactly one comparison value and an optional delta (you provided more values)"
+	}
+
+	actualFloat, err := getFloat(actual)
+	if err != nil {
+		return 0.0, 0.0, 0.0, "The actual value " + err.Error()
+	}
+
+	expectedFloat, err := getFloat(expected[0])
+	if err != nil {
+		return 0.0, 0.0, 0.0, "The comparison value " + err.Error()
+	}
+
+	return actualFloat, expectedFloat, deltaFloat, ""
+}
+
+// returns the float value of any real number, or error if it is not a numerical type
+func getFloat(num interface{}) (float64, error) {
+	numValue := reflect.ValueOf(num)
+	numKind := numValue.Kind()
+
+	if numKind == reflect.Int ||
+		numKind == reflect.Int8 ||
+		numKind == reflect.Int16 ||
+		numKind == reflect.Int32 ||
+		numKind == reflect.Int64 {
+		return float64(numValue.Int()), nil
+	} else if numKind == reflect.Uint ||
+		numKind == reflect.Uint8 ||
+		numKind == reflect.Uint16 ||
+		numKind == reflect.Uint32 ||
+		numKind == reflect.Uint64 {
+		return float64(numValue.Uint()), nil
+	} else if numKind == reflect.Float32 ||
+		numKind == reflect.Float64 {
+		return numValue.Float(), nil
+	} else {
+		return 0.0, errors.New("must be a numerical type, but was: " + numKind.String())
+	}
+}
+
+// ShouldEqualJSON receives exactly two parameters and does an equality check by marshalling to JSON
+func ShouldEqualJSON(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+
+	expectedString, expectedErr := remarshal(expected[0].(string))
+	if expectedErr != nil {
+		return "Expected value not valid JSON: " + expectedErr.Error()
+	}
+
+	actualString, actualErr := remarshal(actual.(string))
+	if actualErr != nil {
+		return "Actual value not valid JSON: " + actualErr.Error()
+	}
+
+	return ShouldEqual(actualString, expectedString)
+}
+func remarshal(value string) (string, error) {
+	var structured map[string]interface{}
+	err := json.Unmarshal([]byte(value), &structured)
+	if err != nil {
+		return "", err
+	}
+	canonical, _ := json.Marshal(structured)
+	return string(canonical), nil
+}
+
+// ShouldResemble receives exactly two parameters and does a deep equal check (see reflect.DeepEqual)
+func ShouldResemble(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+
+	if matchError := oglematchers.DeepEquals(expected[0]).Matches(actual); matchError != nil {
+		return serializer.serializeDetailed(expected[0], actual,
+			fmt.Sprintf(shouldHaveResembled, render.Render(expected[0]), render.Render(actual)))
+	}
+
+	return success
+}
+
+// ShouldNotResemble receives exactly two parameters and does an inverse deep equal check (see reflect.DeepEqual)
+func ShouldNotResemble(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	} else if ShouldResemble(actual, expected[0]) == success {
+		return fmt.Sprintf(shouldNotHaveResembled, render.Render(actual), render.Render(expected[0]))
+	}
+	return success
+}
+
+// ShouldPointTo receives exactly two parameters and checks to see that they point to the same address.
+func ShouldPointTo(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+	return shouldPointTo(actual, expected[0])
+
+}
+func shouldPointTo(actual, expected interface{}) string {
+	actualValue := reflect.ValueOf(actual)
+	expectedValue := reflect.ValueOf(expected)
+
+	if ShouldNotBeNil(actual) != success {
+		return fmt.Sprintf(shouldHaveBeenNonNilPointer, "first", "nil")
+	} else if ShouldNotBeNil(expected) != success {
+		return fmt.Sprintf(shouldHaveBeenNonNilPointer, "second", "nil")
+	} else if actualValue.Kind() != reflect.Ptr {
+		return fmt.Sprintf(shouldHaveBeenNonNilPointer, "first", "not")
+	} else if expectedValue.Kind() != reflect.Ptr {
+		return fmt.Sprintf(shouldHaveBeenNonNilPointer, "second", "not")
+	} else if ShouldEqual(actualValue.Pointer(), expectedValue.Pointer()) != success {
+		actualAddress := reflect.ValueOf(actual).Pointer()
+		expectedAddress := reflect.ValueOf(expected).Pointer()
+		return serializer.serialize(expectedAddress, actualAddress, fmt.Sprintf(shouldHavePointedTo,
+			actual, actualAddress,
+			expected, expectedAddress))
+	}
+	return success
+}
+
+// ShouldNotPointTo receives exactly two parameters and checks to see that they point to different addresess.
+func ShouldNotPointTo(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+	compare := ShouldPointTo(actual, expected[0])
+	if strings.HasPrefix(compare, shouldBePointers) {
+		return compare
+	} else if compare == success {
+		return fmt.Sprintf(shouldNotHavePointedTo, actual, expected[0], reflect.ValueOf(actual).Pointer())
+	}
+	return success
+}
+
+// ShouldBeNil receives a single parameter and ensures that it is nil.
+func ShouldBeNil(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	} else if actual == nil {
+		return success
+	} else if interfaceHasNilValue(actual) {
+		return success
+	}
+	return fmt.Sprintf(shouldHaveBeenNil, actual)
+}
+func interfaceHasNilValue(actual interface{}) bool {
+	value := reflect.ValueOf(actual)
+	kind := value.Kind()
+	nilable := kind == reflect.Slice ||
+		kind == reflect.Chan ||
+		kind == reflect.Func ||
+		kind == reflect.Ptr ||
+		kind == reflect.Map
+
+	// Careful: reflect.Value.IsNil() will panic unless it's an interface, chan, map, func, slice, or ptr
+	// Reference: http://golang.org/pkg/reflect/#Value.IsNil
+	return nilable && value.IsNil()
+}
+
+// ShouldNotBeNil receives a single parameter and ensures that it is not nil.
+func ShouldNotBeNil(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	} else if ShouldBeNil(actual) == success {
+		return fmt.Sprintf(shouldNotHaveBeenNil, actual)
+	}
+	return success
+}
+
+// ShouldBeTrue receives a single parameter and ensures that it is true.
+func ShouldBeTrue(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	} else if actual != true {
+		return fmt.Sprintf(shouldHaveBeenTrue, actual)
+	}
+	return success
+}
+
+// ShouldBeFalse receives a single parameter and ensures that it is false.
+func ShouldBeFalse(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	} else if actual != false {
+		return fmt.Sprintf(shouldHaveBeenFalse, actual)
+	}
+	return success
+}
+
+// ShouldBeZeroValue receives a single parameter and ensures that it is
+// the Go equivalent of the default value, or "zero" value.
+func ShouldBeZeroValue(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+	zeroVal := reflect.Zero(reflect.TypeOf(actual)).Interface()
+	if !reflect.DeepEqual(zeroVal, actual) {
+		return serializer.serialize(zeroVal, actual, fmt.Sprintf(shouldHaveBeenZeroValue, actual))
+	}
+	return success
+}
+
+// ShouldBeZeroValue receives a single parameter and ensures that it is NOT
+// the Go equivalent of the default value, or "zero" value.
+func ShouldNotBeZeroValue(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+	zeroVal := reflect.Zero(reflect.TypeOf(actual)).Interface()
+	if reflect.DeepEqual(zeroVal, actual) {
+		return serializer.serialize(zeroVal, actual, fmt.Sprintf(shouldNotHaveBeenZeroValue, actual))
+	}
+	return success
+}
diff --git a/vendor/github.com/smartystreets/assertions/filter.go b/vendor/github.com/smartystreets/assertions/filter.go
new file mode 100644
index 0000000..7c46ab8
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/filter.go
@@ -0,0 +1,31 @@
+package assertions
+
+import "fmt"
+
+const (
+	success                = ""
+	needExactValues        = "This assertion requires exactly %d comparison values (you provided %d)."
+	needNonEmptyCollection = "This assertion requires at least 1 comparison value (you provided 0)."
+	needFewerValues        = "This assertion allows %d or fewer comparison values (you provided %d)."
+)
+
+func need(needed int, expected []interface{}) string {
+	if len(expected) != needed {
+		return fmt.Sprintf(needExactValues, needed, len(expected))
+	}
+	return success
+}
+
+func atLeast(minimum int, expected []interface{}) string {
+	if len(expected) < 1 {
+		return needNonEmptyCollection
+	}
+	return success
+}
+
+func atMost(max int, expected []interface{}) string {
+	if len(expected) > max {
+		return fmt.Sprintf(needFewerValues, max, len(expected))
+	}
+	return success
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/go-render/LICENSE b/vendor/github.com/smartystreets/assertions/internal/go-render/LICENSE
new file mode 100644
index 0000000..6280ff0
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/go-render/LICENSE
@@ -0,0 +1,27 @@
+// Copyright (c) 2015 The Chromium Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/smartystreets/assertions/internal/go-render/render/render.go b/vendor/github.com/smartystreets/assertions/internal/go-render/render/render.go
new file mode 100644
index 0000000..313611e
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/go-render/render/render.go
@@ -0,0 +1,481 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package render
+
+import (
+	"bytes"
+	"fmt"
+	"reflect"
+	"sort"
+	"strconv"
+)
+
+var builtinTypeMap = map[reflect.Kind]string{
+	reflect.Bool:       "bool",
+	reflect.Complex128: "complex128",
+	reflect.Complex64:  "complex64",
+	reflect.Float32:    "float32",
+	reflect.Float64:    "float64",
+	reflect.Int16:      "int16",
+	reflect.Int32:      "int32",
+	reflect.Int64:      "int64",
+	reflect.Int8:       "int8",
+	reflect.Int:        "int",
+	reflect.String:     "string",
+	reflect.Uint16:     "uint16",
+	reflect.Uint32:     "uint32",
+	reflect.Uint64:     "uint64",
+	reflect.Uint8:      "uint8",
+	reflect.Uint:       "uint",
+	reflect.Uintptr:    "uintptr",
+}
+
+var builtinTypeSet = map[string]struct{}{}
+
+func init() {
+	for _, v := range builtinTypeMap {
+		builtinTypeSet[v] = struct{}{}
+	}
+}
+
+var typeOfString = reflect.TypeOf("")
+var typeOfInt = reflect.TypeOf(int(1))
+var typeOfUint = reflect.TypeOf(uint(1))
+var typeOfFloat = reflect.TypeOf(10.1)
+
+// Render converts a structure to a string representation. Unline the "%#v"
+// format string, this resolves pointer types' contents in structs, maps, and
+// slices/arrays and prints their field values.
+func Render(v interface{}) string {
+	buf := bytes.Buffer{}
+	s := (*traverseState)(nil)
+	s.render(&buf, 0, reflect.ValueOf(v), false)
+	return buf.String()
+}
+
+// renderPointer is called to render a pointer value.
+//
+// This is overridable so that the test suite can have deterministic pointer
+// values in its expectations.
+var renderPointer = func(buf *bytes.Buffer, p uintptr) {
+	fmt.Fprintf(buf, "0x%016x", p)
+}
+
+// traverseState is used to note and avoid recursion as struct members are being
+// traversed.
+//
+// traverseState is allowed to be nil. Specifically, the root state is nil.
+type traverseState struct {
+	parent *traverseState
+	ptr    uintptr
+}
+
+func (s *traverseState) forkFor(ptr uintptr) *traverseState {
+	for cur := s; cur != nil; cur = cur.parent {
+		if ptr == cur.ptr {
+			return nil
+		}
+	}
+
+	fs := &traverseState{
+		parent: s,
+		ptr:    ptr,
+	}
+	return fs
+}
+
+func (s *traverseState) render(buf *bytes.Buffer, ptrs int, v reflect.Value, implicit bool) {
+	if v.Kind() == reflect.Invalid {
+		buf.WriteString("nil")
+		return
+	}
+	vt := v.Type()
+
+	// If the type being rendered is a potentially recursive type (a type that
+	// can contain itself as a member), we need to avoid recursion.
+	//
+	// If we've already seen this type before, mark that this is the case and
+	// write a recursion placeholder instead of actually rendering it.
+	//
+	// If we haven't seen it before, fork our `seen` tracking so any higher-up
+	// renderers will also render it at least once, then mark that we've seen it
+	// to avoid recursing on lower layers.
+	pe := uintptr(0)
+	vk := vt.Kind()
+	switch vk {
+	case reflect.Ptr:
+		// Since structs and arrays aren't pointers, they can't directly be
+		// recursed, but they can contain pointers to themselves. Record their
+		// pointer to avoid this.
+		switch v.Elem().Kind() {
+		case reflect.Struct, reflect.Array:
+			pe = v.Pointer()
+		}
+
+	case reflect.Slice, reflect.Map:
+		pe = v.Pointer()
+	}
+	if pe != 0 {
+		s = s.forkFor(pe)
+		if s == nil {
+			buf.WriteString("<REC(")
+			if !implicit {
+				writeType(buf, ptrs, vt)
+			}
+			buf.WriteString(")>")
+			return
+		}
+	}
+
+	isAnon := func(t reflect.Type) bool {
+		if t.Name() != "" {
+			if _, ok := builtinTypeSet[t.Name()]; !ok {
+				return false
+			}
+		}
+		return t.Kind() != reflect.Interface
+	}
+
+	switch vk {
+	case reflect.Struct:
+		if !implicit {
+			writeType(buf, ptrs, vt)
+		}
+		buf.WriteRune('{')
+		if rendered, ok := renderTime(v); ok {
+			buf.WriteString(rendered)
+		} else {
+			structAnon := vt.Name() == ""
+			for i := 0; i < vt.NumField(); i++ {
+				if i > 0 {
+					buf.WriteString(", ")
+				}
+				anon := structAnon && isAnon(vt.Field(i).Type)
+
+				if !anon {
+					buf.WriteString(vt.Field(i).Name)
+					buf.WriteRune(':')
+				}
+
+				s.render(buf, 0, v.Field(i), anon)
+			}
+		}
+		buf.WriteRune('}')
+
+	case reflect.Slice:
+		if v.IsNil() {
+			if !implicit {
+				writeType(buf, ptrs, vt)
+				buf.WriteString("(nil)")
+			} else {
+				buf.WriteString("nil")
+			}
+			return
+		}
+		fallthrough
+
+	case reflect.Array:
+		if !implicit {
+			writeType(buf, ptrs, vt)
+		}
+		anon := vt.Name() == "" && isAnon(vt.Elem())
+		buf.WriteString("{")
+		for i := 0; i < v.Len(); i++ {
+			if i > 0 {
+				buf.WriteString(", ")
+			}
+
+			s.render(buf, 0, v.Index(i), anon)
+		}
+		buf.WriteRune('}')
+
+	case reflect.Map:
+		if !implicit {
+			writeType(buf, ptrs, vt)
+		}
+		if v.IsNil() {
+			buf.WriteString("(nil)")
+		} else {
+			buf.WriteString("{")
+
+			mkeys := v.MapKeys()
+			tryAndSortMapKeys(vt, mkeys)
+
+			kt := vt.Key()
+			keyAnon := typeOfString.ConvertibleTo(kt) || typeOfInt.ConvertibleTo(kt) || typeOfUint.ConvertibleTo(kt) || typeOfFloat.ConvertibleTo(kt)
+			valAnon := vt.Name() == "" && isAnon(vt.Elem())
+			for i, mk := range mkeys {
+				if i > 0 {
+					buf.WriteString(", ")
+				}
+
+				s.render(buf, 0, mk, keyAnon)
+				buf.WriteString(":")
+				s.render(buf, 0, v.MapIndex(mk), valAnon)
+			}
+			buf.WriteRune('}')
+		}
+
+	case reflect.Ptr:
+		ptrs++
+		fallthrough
+	case reflect.Interface:
+		if v.IsNil() {
+			writeType(buf, ptrs, v.Type())
+			buf.WriteString("(nil)")
+		} else {
+			s.render(buf, ptrs, v.Elem(), false)
+		}
+
+	case reflect.Chan, reflect.Func, reflect.UnsafePointer:
+		writeType(buf, ptrs, vt)
+		buf.WriteRune('(')
+		renderPointer(buf, v.Pointer())
+		buf.WriteRune(')')
+
+	default:
+		tstr := vt.String()
+		implicit = implicit || (ptrs == 0 && builtinTypeMap[vk] == tstr)
+		if !implicit {
+			writeType(buf, ptrs, vt)
+			buf.WriteRune('(')
+		}
+
+		switch vk {
+		case reflect.String:
+			fmt.Fprintf(buf, "%q", v.String())
+		case reflect.Bool:
+			fmt.Fprintf(buf, "%v", v.Bool())
+
+		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+			fmt.Fprintf(buf, "%d", v.Int())
+
+		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+			fmt.Fprintf(buf, "%d", v.Uint())
+
+		case reflect.Float32, reflect.Float64:
+			fmt.Fprintf(buf, "%g", v.Float())
+
+		case reflect.Complex64, reflect.Complex128:
+			fmt.Fprintf(buf, "%g", v.Complex())
+		}
+
+		if !implicit {
+			buf.WriteRune(')')
+		}
+	}
+}
+
+func writeType(buf *bytes.Buffer, ptrs int, t reflect.Type) {
+	parens := ptrs > 0
+	switch t.Kind() {
+	case reflect.Chan, reflect.Func, reflect.UnsafePointer:
+		parens = true
+	}
+
+	if parens {
+		buf.WriteRune('(')
+		for i := 0; i < ptrs; i++ {
+			buf.WriteRune('*')
+		}
+	}
+
+	switch t.Kind() {
+	case reflect.Ptr:
+		if ptrs == 0 {
+			// This pointer was referenced from within writeType (e.g., as part of
+			// rendering a list), and so hasn't had its pointer asterisk accounted
+			// for.
+			buf.WriteRune('*')
+		}
+		writeType(buf, 0, t.Elem())
+
+	case reflect.Interface:
+		if n := t.Name(); n != "" {
+			buf.WriteString(t.String())
+		} else {
+			buf.WriteString("interface{}")
+		}
+
+	case reflect.Array:
+		buf.WriteRune('[')
+		buf.WriteString(strconv.FormatInt(int64(t.Len()), 10))
+		buf.WriteRune(']')
+		writeType(buf, 0, t.Elem())
+
+	case reflect.Slice:
+		if t == reflect.SliceOf(t.Elem()) {
+			buf.WriteString("[]")
+			writeType(buf, 0, t.Elem())
+		} else {
+			// Custom slice type, use type name.
+			buf.WriteString(t.String())
+		}
+
+	case reflect.Map:
+		if t == reflect.MapOf(t.Key(), t.Elem()) {
+			buf.WriteString("map[")
+			writeType(buf, 0, t.Key())
+			buf.WriteRune(']')
+			writeType(buf, 0, t.Elem())
+		} else {
+			// Custom map type, use type name.
+			buf.WriteString(t.String())
+		}
+
+	default:
+		buf.WriteString(t.String())
+	}
+
+	if parens {
+		buf.WriteRune(')')
+	}
+}
+
+type cmpFn func(a, b reflect.Value) int
+
+type sortableValueSlice struct {
+	cmp      cmpFn
+	elements []reflect.Value
+}
+
+func (s sortableValueSlice) Len() int {
+	return len(s.elements)
+}
+
+func (s sortableValueSlice) Less(i, j int) bool {
+	return s.cmp(s.elements[i], s.elements[j]) < 0
+}
+
+func (s sortableValueSlice) Swap(i, j int) {
+	s.elements[i], s.elements[j] = s.elements[j], s.elements[i]
+}
+
+// cmpForType returns a cmpFn which sorts the data for some type t in the same
+// order that a go-native map key is compared for equality.
+func cmpForType(t reflect.Type) cmpFn {
+	switch t.Kind() {
+	case reflect.String:
+		return func(av, bv reflect.Value) int {
+			a, b := av.String(), bv.String()
+			if a < b {
+				return -1
+			} else if a > b {
+				return 1
+			}
+			return 0
+		}
+
+	case reflect.Bool:
+		return func(av, bv reflect.Value) int {
+			a, b := av.Bool(), bv.Bool()
+			if !a && b {
+				return -1
+			} else if a && !b {
+				return 1
+			}
+			return 0
+		}
+
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return func(av, bv reflect.Value) int {
+			a, b := av.Int(), bv.Int()
+			if a < b {
+				return -1
+			} else if a > b {
+				return 1
+			}
+			return 0
+		}
+
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32,
+		reflect.Uint64, reflect.Uintptr, reflect.UnsafePointer:
+		return func(av, bv reflect.Value) int {
+			a, b := av.Uint(), bv.Uint()
+			if a < b {
+				return -1
+			} else if a > b {
+				return 1
+			}
+			return 0
+		}
+
+	case reflect.Float32, reflect.Float64:
+		return func(av, bv reflect.Value) int {
+			a, b := av.Float(), bv.Float()
+			if a < b {
+				return -1
+			} else if a > b {
+				return 1
+			}
+			return 0
+		}
+
+	case reflect.Interface:
+		return func(av, bv reflect.Value) int {
+			a, b := av.InterfaceData(), bv.InterfaceData()
+			if a[0] < b[0] {
+				return -1
+			} else if a[0] > b[0] {
+				return 1
+			}
+			if a[1] < b[1] {
+				return -1
+			} else if a[1] > b[1] {
+				return 1
+			}
+			return 0
+		}
+
+	case reflect.Complex64, reflect.Complex128:
+		return func(av, bv reflect.Value) int {
+			a, b := av.Complex(), bv.Complex()
+			if real(a) < real(b) {
+				return -1
+			} else if real(a) > real(b) {
+				return 1
+			}
+			if imag(a) < imag(b) {
+				return -1
+			} else if imag(a) > imag(b) {
+				return 1
+			}
+			return 0
+		}
+
+	case reflect.Ptr, reflect.Chan:
+		return func(av, bv reflect.Value) int {
+			a, b := av.Pointer(), bv.Pointer()
+			if a < b {
+				return -1
+			} else if a > b {
+				return 1
+			}
+			return 0
+		}
+
+	case reflect.Struct:
+		cmpLst := make([]cmpFn, t.NumField())
+		for i := range cmpLst {
+			cmpLst[i] = cmpForType(t.Field(i).Type)
+		}
+		return func(a, b reflect.Value) int {
+			for i, cmp := range cmpLst {
+				if rslt := cmp(a.Field(i), b.Field(i)); rslt != 0 {
+					return rslt
+				}
+			}
+			return 0
+		}
+	}
+
+	return nil
+}
+
+func tryAndSortMapKeys(mt reflect.Type, k []reflect.Value) {
+	if cmp := cmpForType(mt.Key()); cmp != nil {
+		sort.Sort(sortableValueSlice{cmp, k})
+	}
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/go-render/render/render_time.go b/vendor/github.com/smartystreets/assertions/internal/go-render/render/render_time.go
new file mode 100644
index 0000000..990c75d
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/go-render/render/render_time.go
@@ -0,0 +1,26 @@
+package render
+
+import (
+	"reflect"
+	"time"
+)
+
+func renderTime(value reflect.Value) (string, bool) {
+	if instant, ok := convertTime(value); !ok {
+		return "", false
+	} else if instant.IsZero() {
+		return "0", true
+	} else {
+		return instant.String(), true
+	}
+}
+
+func convertTime(value reflect.Value) (t time.Time, ok bool) {
+	if value.Type() == timeType {
+		defer func() { recover() }()
+		t, ok = value.Interface().(time.Time)
+	}
+	return
+}
+
+var timeType = reflect.TypeOf(time.Time{})
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/.gitignore b/vendor/github.com/smartystreets/assertions/internal/oglematchers/.gitignore
new file mode 100644
index 0000000..dd8fc74
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/.gitignore
@@ -0,0 +1,5 @@
+*.6
+6.out
+_obj/
+_test/
+_testmain.go
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/.travis.yml b/vendor/github.com/smartystreets/assertions/internal/oglematchers/.travis.yml
new file mode 100644
index 0000000..b972119
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/.travis.yml
@@ -0,0 +1,4 @@
+# Cf. http://docs.travis-ci.com/user/getting-started/
+# Cf. http://docs.travis-ci.com/user/languages/go/
+
+language: go
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/LICENSE b/vendor/github.com/smartystreets/assertions/internal/oglematchers/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/LICENSE
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
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+          notices within Derivative Works that You distribute, alongside
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+      the conditions stated in this License.
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
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+      the terms of any separate license agreement you may have executed
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+   6. Trademarks. This License does not grant permission to use the trade
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+      unless required by applicable law (such as deliberate and grossly
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+      on Your own behalf and on Your sole responsibility, not on behalf
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+      incurred by, or claims asserted against, such Contributor by reason
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+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
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+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/README.md b/vendor/github.com/smartystreets/assertions/internal/oglematchers/README.md
new file mode 100644
index 0000000..215a2bb
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/README.md
@@ -0,0 +1,58 @@
+[![GoDoc](https://godoc.org/github.com/smartystreets/assertions/internal/oglematchers?status.svg)](https://godoc.org/github.com/smartystreets/assertions/internal/oglematchers)
+
+`oglematchers` is a package for the Go programming language containing a set of
+matchers, useful in a testing or mocking framework, inspired by and mostly
+compatible with [Google Test][googletest] for C++ and
+[Google JS Test][google-js-test]. The package is used by the
+[ogletest][ogletest] testing framework and [oglemock][oglemock] mocking
+framework, which may be more directly useful to you, but can be generically used
+elsewhere as well.
+
+A "matcher" is simply an object with a `Matches` method defining a set of golang
+values matched by the matcher, and a `Description` method describing that set.
+For example, here are some matchers:
+
+```go
+// Numbers
+Equals(17.13)
+LessThan(19)
+
+// Strings
+Equals("taco")
+HasSubstr("burrito")
+MatchesRegex("t.*o")
+
+// Combining matchers
+AnyOf(LessThan(17), GreaterThan(19))
+```
+
+There are lots more; see [here][reference] for a reference. You can also add
+your own simply by implementing the `oglematchers.Matcher` interface.
+
+
+Installation
+------------
+
+First, make sure you have installed Go 1.0.2 or newer. See
+[here][golang-install] for instructions.
+
+Use the following command to install `oglematchers` and keep it up to date:
+
+    go get -u github.com/smartystreets/assertions/internal/oglematchers
+
+
+Documentation
+-------------
+
+See [here][reference] for documentation. Alternatively, you can install the
+package and then use `godoc`:
+
+    godoc github.com/smartystreets/assertions/internal/oglematchers
+
+
+[reference]: http://godoc.org/github.com/smartystreets/assertions/internal/oglematchers
+[golang-install]: http://golang.org/doc/install.html
+[googletest]: http://code.google.com/p/googletest/
+[google-js-test]: http://code.google.com/p/google-js-test/
+[ogletest]: http://github.com/smartystreets/assertions/internal/ogletest
+[oglemock]: http://github.com/smartystreets/assertions/internal/oglemock
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/any_of.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/any_of.go
new file mode 100644
index 0000000..2918b51
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/any_of.go
@@ -0,0 +1,94 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// AnyOf accepts a set of values S and returns a matcher that follows the
+// algorithm below when considering a candidate c:
+//
+//  1. If there exists a value m in S such that m implements the Matcher
+//     interface and m matches c, return true.
+//
+//  2. Otherwise, if there exists a value v in S such that v does not implement
+//     the Matcher interface and the matcher Equals(v) matches c, return true.
+//
+//  3. Otherwise, if there is a value m in S such that m implements the Matcher
+//     interface and m returns a fatal error for c, return that fatal error.
+//
+//  4. Otherwise, return false.
+//
+// This is akin to a logical OR operation for matchers, with non-matchers x
+// being treated as Equals(x).
+func AnyOf(vals ...interface{}) Matcher {
+	// Get ahold of a type variable for the Matcher interface.
+	var dummy *Matcher
+	matcherType := reflect.TypeOf(dummy).Elem()
+
+	// Create a matcher for each value, or use the value itself if it's already a
+	// matcher.
+	wrapped := make([]Matcher, len(vals))
+	for i, v := range vals {
+		t := reflect.TypeOf(v)
+		if t != nil && t.Implements(matcherType) {
+			wrapped[i] = v.(Matcher)
+		} else {
+			wrapped[i] = Equals(v)
+		}
+	}
+
+	return &anyOfMatcher{wrapped}
+}
+
+type anyOfMatcher struct {
+	wrapped []Matcher
+}
+
+func (m *anyOfMatcher) Description() string {
+	wrappedDescs := make([]string, len(m.wrapped))
+	for i, matcher := range m.wrapped {
+		wrappedDescs[i] = matcher.Description()
+	}
+
+	return fmt.Sprintf("or(%s)", strings.Join(wrappedDescs, ", "))
+}
+
+func (m *anyOfMatcher) Matches(c interface{}) (err error) {
+	err = errors.New("")
+
+	// Try each matcher in turn.
+	for _, matcher := range m.wrapped {
+		wrappedErr := matcher.Matches(c)
+
+		// Return immediately if there's a match.
+		if wrappedErr == nil {
+			err = nil
+			return
+		}
+
+		// Note the fatal error, if any.
+		if _, isFatal := wrappedErr.(*FatalError); isFatal {
+			err = wrappedErr
+		}
+	}
+
+	return
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/contains.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/contains.go
new file mode 100644
index 0000000..87f107d
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/contains.go
@@ -0,0 +1,61 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// Return a matcher that matches arrays slices with at least one element that
+// matches the supplied argument. If the argument x is not itself a Matcher,
+// this is equivalent to Contains(Equals(x)).
+func Contains(x interface{}) Matcher {
+	var result containsMatcher
+	var ok bool
+
+	if result.elementMatcher, ok = x.(Matcher); !ok {
+		result.elementMatcher = DeepEquals(x)
+	}
+
+	return &result
+}
+
+type containsMatcher struct {
+	elementMatcher Matcher
+}
+
+func (m *containsMatcher) Description() string {
+	return fmt.Sprintf("contains: %s", m.elementMatcher.Description())
+}
+
+func (m *containsMatcher) Matches(candidate interface{}) error {
+	// The candidate must be a slice or an array.
+	v := reflect.ValueOf(candidate)
+	if v.Kind() != reflect.Slice && v.Kind() != reflect.Array {
+		return NewFatalError("which is not a slice or array")
+	}
+
+	// Check each element.
+	for i := 0; i < v.Len(); i++ {
+		elem := v.Index(i)
+		if matchErr := m.elementMatcher.Matches(elem.Interface()); matchErr == nil {
+			return nil
+		}
+	}
+
+	return fmt.Errorf("")
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/deep_equals.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/deep_equals.go
new file mode 100644
index 0000000..1d91bae
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/deep_equals.go
@@ -0,0 +1,88 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"reflect"
+)
+
+var byteSliceType reflect.Type = reflect.TypeOf([]byte{})
+
+// DeepEquals returns a matcher that matches based on 'deep equality', as
+// defined by the reflect package. This matcher requires that values have
+// identical types to x.
+func DeepEquals(x interface{}) Matcher {
+	return &deepEqualsMatcher{x}
+}
+
+type deepEqualsMatcher struct {
+	x interface{}
+}
+
+func (m *deepEqualsMatcher) Description() string {
+	xDesc := fmt.Sprintf("%v", m.x)
+	xValue := reflect.ValueOf(m.x)
+
+	// Special case: fmt.Sprintf presents nil slices as "[]", but
+	// reflect.DeepEqual makes a distinction between nil and empty slices. Make
+	// this less confusing.
+	if xValue.Kind() == reflect.Slice && xValue.IsNil() {
+		xDesc = "<nil slice>"
+	}
+
+	return fmt.Sprintf("deep equals: %s", xDesc)
+}
+
+func (m *deepEqualsMatcher) Matches(c interface{}) error {
+	// Make sure the types match.
+	ct := reflect.TypeOf(c)
+	xt := reflect.TypeOf(m.x)
+
+	if ct != xt {
+		return NewFatalError(fmt.Sprintf("which is of type %v", ct))
+	}
+
+	// Special case: handle byte slices more efficiently.
+	cValue := reflect.ValueOf(c)
+	xValue := reflect.ValueOf(m.x)
+
+	if ct == byteSliceType && !cValue.IsNil() && !xValue.IsNil() {
+		xBytes := m.x.([]byte)
+		cBytes := c.([]byte)
+
+		if bytes.Equal(cBytes, xBytes) {
+			return nil
+		}
+
+		return errors.New("")
+	}
+
+	// Defer to the reflect package.
+	if reflect.DeepEqual(m.x, c) {
+		return nil
+	}
+
+	// Special case: if the comparison failed because c is the nil slice, given
+	// an indication of this (since its value is printed as "[]").
+	if cValue.Kind() == reflect.Slice && cValue.IsNil() {
+		return errors.New("which is nil")
+	}
+
+	return errors.New("")
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/equals.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/equals.go
new file mode 100644
index 0000000..a510707
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/equals.go
@@ -0,0 +1,541 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"math"
+	"reflect"
+)
+
+// Equals(x) returns a matcher that matches values v such that v and x are
+// equivalent. This includes the case when the comparison v == x using Go's
+// built-in comparison operator is legal (except for structs, which this
+// matcher does not support), but for convenience the following rules also
+// apply:
+//
+//  *  Type checking is done based on underlying types rather than actual
+//     types, so that e.g. two aliases for string can be compared:
+//
+//         type stringAlias1 string
+//         type stringAlias2 string
+//
+//         a := "taco"
+//         b := stringAlias1("taco")
+//         c := stringAlias2("taco")
+//
+//         ExpectTrue(a == b)  // Legal, passes
+//         ExpectTrue(b == c)  // Illegal, doesn't compile
+//
+//         ExpectThat(a, Equals(b))  // Passes
+//         ExpectThat(b, Equals(c))  // Passes
+//
+//  *  Values of numeric type are treated as if they were abstract numbers, and
+//     compared accordingly. Therefore Equals(17) will match int(17),
+//     int16(17), uint(17), float32(17), complex64(17), and so on.
+//
+// If you want a stricter matcher that contains no such cleverness, see
+// IdenticalTo instead.
+//
+// Arrays are supported by this matcher, but do not participate in the
+// exceptions above. Two arrays compared with this matcher must have identical
+// types, and their element type must itself be comparable according to Go's ==
+// operator.
+func Equals(x interface{}) Matcher {
+	v := reflect.ValueOf(x)
+
+	// This matcher doesn't support structs.
+	if v.Kind() == reflect.Struct {
+		panic(fmt.Sprintf("oglematchers.Equals: unsupported kind %v", v.Kind()))
+	}
+
+	// The == operator is not defined for non-nil slices.
+	if v.Kind() == reflect.Slice && v.Pointer() != uintptr(0) {
+		panic(fmt.Sprintf("oglematchers.Equals: non-nil slice"))
+	}
+
+	return &equalsMatcher{v}
+}
+
+type equalsMatcher struct {
+	expectedValue reflect.Value
+}
+
+////////////////////////////////////////////////////////////////////////
+// Numeric types
+////////////////////////////////////////////////////////////////////////
+
+func isSignedInteger(v reflect.Value) bool {
+	k := v.Kind()
+	return k >= reflect.Int && k <= reflect.Int64
+}
+
+func isUnsignedInteger(v reflect.Value) bool {
+	k := v.Kind()
+	return k >= reflect.Uint && k <= reflect.Uintptr
+}
+
+func isInteger(v reflect.Value) bool {
+	return isSignedInteger(v) || isUnsignedInteger(v)
+}
+
+func isFloat(v reflect.Value) bool {
+	k := v.Kind()
+	return k == reflect.Float32 || k == reflect.Float64
+}
+
+func isComplex(v reflect.Value) bool {
+	k := v.Kind()
+	return k == reflect.Complex64 || k == reflect.Complex128
+}
+
+func checkAgainstInt64(e int64, c reflect.Value) (err error) {
+	err = errors.New("")
+
+	switch {
+	case isSignedInteger(c):
+		if c.Int() == e {
+			err = nil
+		}
+
+	case isUnsignedInteger(c):
+		u := c.Uint()
+		if u <= math.MaxInt64 && int64(u) == e {
+			err = nil
+		}
+
+	// Turn around the various floating point types so that the checkAgainst*
+	// functions for them can deal with precision issues.
+	case isFloat(c), isComplex(c):
+		return Equals(c.Interface()).Matches(e)
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstUint64(e uint64, c reflect.Value) (err error) {
+	err = errors.New("")
+
+	switch {
+	case isSignedInteger(c):
+		i := c.Int()
+		if i >= 0 && uint64(i) == e {
+			err = nil
+		}
+
+	case isUnsignedInteger(c):
+		if c.Uint() == e {
+			err = nil
+		}
+
+	// Turn around the various floating point types so that the checkAgainst*
+	// functions for them can deal with precision issues.
+	case isFloat(c), isComplex(c):
+		return Equals(c.Interface()).Matches(e)
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstFloat32(e float32, c reflect.Value) (err error) {
+	err = errors.New("")
+
+	switch {
+	case isSignedInteger(c):
+		if float32(c.Int()) == e {
+			err = nil
+		}
+
+	case isUnsignedInteger(c):
+		if float32(c.Uint()) == e {
+			err = nil
+		}
+
+	case isFloat(c):
+		// Compare using float32 to avoid a false sense of precision; otherwise
+		// e.g. Equals(float32(0.1)) won't match float32(0.1).
+		if float32(c.Float()) == e {
+			err = nil
+		}
+
+	case isComplex(c):
+		comp := c.Complex()
+		rl := real(comp)
+		im := imag(comp)
+
+		// Compare using float32 to avoid a false sense of precision; otherwise
+		// e.g. Equals(float32(0.1)) won't match (0.1 + 0i).
+		if im == 0 && float32(rl) == e {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstFloat64(e float64, c reflect.Value) (err error) {
+	err = errors.New("")
+
+	ck := c.Kind()
+
+	switch {
+	case isSignedInteger(c):
+		if float64(c.Int()) == e {
+			err = nil
+		}
+
+	case isUnsignedInteger(c):
+		if float64(c.Uint()) == e {
+			err = nil
+		}
+
+	// If the actual value is lower precision, turn the comparison around so we
+	// apply the low-precision rules. Otherwise, e.g. Equals(0.1) may not match
+	// float32(0.1).
+	case ck == reflect.Float32 || ck == reflect.Complex64:
+		return Equals(c.Interface()).Matches(e)
+
+		// Otherwise, compare with double precision.
+	case isFloat(c):
+		if c.Float() == e {
+			err = nil
+		}
+
+	case isComplex(c):
+		comp := c.Complex()
+		rl := real(comp)
+		im := imag(comp)
+
+		if im == 0 && rl == e {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstComplex64(e complex64, c reflect.Value) (err error) {
+	err = errors.New("")
+	realPart := real(e)
+	imaginaryPart := imag(e)
+
+	switch {
+	case isInteger(c) || isFloat(c):
+		// If we have no imaginary part, then we should just compare against the
+		// real part. Otherwise, we can't be equal.
+		if imaginaryPart != 0 {
+			return
+		}
+
+		return checkAgainstFloat32(realPart, c)
+
+	case isComplex(c):
+		// Compare using complex64 to avoid a false sense of precision; otherwise
+		// e.g. Equals(0.1 + 0i) won't match float32(0.1).
+		if complex64(c.Complex()) == e {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstComplex128(e complex128, c reflect.Value) (err error) {
+	err = errors.New("")
+	realPart := real(e)
+	imaginaryPart := imag(e)
+
+	switch {
+	case isInteger(c) || isFloat(c):
+		// If we have no imaginary part, then we should just compare against the
+		// real part. Otherwise, we can't be equal.
+		if imaginaryPart != 0 {
+			return
+		}
+
+		return checkAgainstFloat64(realPart, c)
+
+	case isComplex(c):
+		if c.Complex() == e {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+////////////////////////////////////////////////////////////////////////
+// Other types
+////////////////////////////////////////////////////////////////////////
+
+func checkAgainstBool(e bool, c reflect.Value) (err error) {
+	if c.Kind() != reflect.Bool {
+		err = NewFatalError("which is not a bool")
+		return
+	}
+
+	err = errors.New("")
+	if c.Bool() == e {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstChan(e reflect.Value, c reflect.Value) (err error) {
+	// Create a description of e's type, e.g. "chan int".
+	typeStr := fmt.Sprintf("%s %s", e.Type().ChanDir(), e.Type().Elem())
+
+	// Make sure c is a chan of the correct type.
+	if c.Kind() != reflect.Chan ||
+		c.Type().ChanDir() != e.Type().ChanDir() ||
+		c.Type().Elem() != e.Type().Elem() {
+		err = NewFatalError(fmt.Sprintf("which is not a %s", typeStr))
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstFunc(e reflect.Value, c reflect.Value) (err error) {
+	// Make sure c is a function.
+	if c.Kind() != reflect.Func {
+		err = NewFatalError("which is not a function")
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstMap(e reflect.Value, c reflect.Value) (err error) {
+	// Make sure c is a map.
+	if c.Kind() != reflect.Map {
+		err = NewFatalError("which is not a map")
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstPtr(e reflect.Value, c reflect.Value) (err error) {
+	// Create a description of e's type, e.g. "*int".
+	typeStr := fmt.Sprintf("*%v", e.Type().Elem())
+
+	// Make sure c is a pointer of the correct type.
+	if c.Kind() != reflect.Ptr ||
+		c.Type().Elem() != e.Type().Elem() {
+		err = NewFatalError(fmt.Sprintf("which is not a %s", typeStr))
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstSlice(e reflect.Value, c reflect.Value) (err error) {
+	// Create a description of e's type, e.g. "[]int".
+	typeStr := fmt.Sprintf("[]%v", e.Type().Elem())
+
+	// Make sure c is a slice of the correct type.
+	if c.Kind() != reflect.Slice ||
+		c.Type().Elem() != e.Type().Elem() {
+		err = NewFatalError(fmt.Sprintf("which is not a %s", typeStr))
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstString(e reflect.Value, c reflect.Value) (err error) {
+	// Make sure c is a string.
+	if c.Kind() != reflect.String {
+		err = NewFatalError("which is not a string")
+		return
+	}
+
+	err = errors.New("")
+	if c.String() == e.String() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstArray(e reflect.Value, c reflect.Value) (err error) {
+	// Create a description of e's type, e.g. "[2]int".
+	typeStr := fmt.Sprintf("%v", e.Type())
+
+	// Make sure c is the correct type.
+	if c.Type() != e.Type() {
+		err = NewFatalError(fmt.Sprintf("which is not %s", typeStr))
+		return
+	}
+
+	// Check for equality.
+	if e.Interface() != c.Interface() {
+		err = errors.New("")
+		return
+	}
+
+	return
+}
+
+func checkAgainstUnsafePointer(e reflect.Value, c reflect.Value) (err error) {
+	// Make sure c is a pointer.
+	if c.Kind() != reflect.UnsafePointer {
+		err = NewFatalError("which is not a unsafe.Pointer")
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkForNil(c reflect.Value) (err error) {
+	err = errors.New("")
+
+	// Make sure it is legal to call IsNil.
+	switch c.Kind() {
+	case reflect.Invalid:
+	case reflect.Chan:
+	case reflect.Func:
+	case reflect.Interface:
+	case reflect.Map:
+	case reflect.Ptr:
+	case reflect.Slice:
+
+	default:
+		err = NewFatalError("which cannot be compared to nil")
+		return
+	}
+
+	// Ask whether the value is nil. Handle a nil literal (kind Invalid)
+	// specially, since it's not legal to call IsNil there.
+	if c.Kind() == reflect.Invalid || c.IsNil() {
+		err = nil
+	}
+	return
+}
+
+////////////////////////////////////////////////////////////////////////
+// Public implementation
+////////////////////////////////////////////////////////////////////////
+
+func (m *equalsMatcher) Matches(candidate interface{}) error {
+	e := m.expectedValue
+	c := reflect.ValueOf(candidate)
+	ek := e.Kind()
+
+	switch {
+	case ek == reflect.Bool:
+		return checkAgainstBool(e.Bool(), c)
+
+	case isSignedInteger(e):
+		return checkAgainstInt64(e.Int(), c)
+
+	case isUnsignedInteger(e):
+		return checkAgainstUint64(e.Uint(), c)
+
+	case ek == reflect.Float32:
+		return checkAgainstFloat32(float32(e.Float()), c)
+
+	case ek == reflect.Float64:
+		return checkAgainstFloat64(e.Float(), c)
+
+	case ek == reflect.Complex64:
+		return checkAgainstComplex64(complex64(e.Complex()), c)
+
+	case ek == reflect.Complex128:
+		return checkAgainstComplex128(complex128(e.Complex()), c)
+
+	case ek == reflect.Chan:
+		return checkAgainstChan(e, c)
+
+	case ek == reflect.Func:
+		return checkAgainstFunc(e, c)
+
+	case ek == reflect.Map:
+		return checkAgainstMap(e, c)
+
+	case ek == reflect.Ptr:
+		return checkAgainstPtr(e, c)
+
+	case ek == reflect.Slice:
+		return checkAgainstSlice(e, c)
+
+	case ek == reflect.String:
+		return checkAgainstString(e, c)
+
+	case ek == reflect.Array:
+		return checkAgainstArray(e, c)
+
+	case ek == reflect.UnsafePointer:
+		return checkAgainstUnsafePointer(e, c)
+
+	case ek == reflect.Invalid:
+		return checkForNil(c)
+	}
+
+	panic(fmt.Sprintf("equalsMatcher.Matches: unexpected kind: %v", ek))
+}
+
+func (m *equalsMatcher) Description() string {
+	// Special case: handle nil.
+	if !m.expectedValue.IsValid() {
+		return "is nil"
+	}
+
+	return fmt.Sprintf("%v", m.expectedValue.Interface())
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/greater_or_equal.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/greater_or_equal.go
new file mode 100644
index 0000000..4b9d103
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/greater_or_equal.go
@@ -0,0 +1,39 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// GreaterOrEqual returns a matcher that matches integer, floating point, or
+// strings values v such that v >= x. Comparison is not defined between numeric
+// and string types, but is defined between all integer and floating point
+// types.
+//
+// x must itself be an integer, floating point, or string type; otherwise,
+// GreaterOrEqual will panic.
+func GreaterOrEqual(x interface{}) Matcher {
+	desc := fmt.Sprintf("greater than or equal to %v", x)
+
+	// Special case: make it clear that strings are strings.
+	if reflect.TypeOf(x).Kind() == reflect.String {
+		desc = fmt.Sprintf("greater than or equal to \"%s\"", x)
+	}
+
+	return transformDescription(Not(LessThan(x)), desc)
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/greater_than.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/greater_than.go
new file mode 100644
index 0000000..3eef321
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/greater_than.go
@@ -0,0 +1,39 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// GreaterThan returns a matcher that matches integer, floating point, or
+// strings values v such that v > x. Comparison is not defined between numeric
+// and string types, but is defined between all integer and floating point
+// types.
+//
+// x must itself be an integer, floating point, or string type; otherwise,
+// GreaterThan will panic.
+func GreaterThan(x interface{}) Matcher {
+	desc := fmt.Sprintf("greater than %v", x)
+
+	// Special case: make it clear that strings are strings.
+	if reflect.TypeOf(x).Kind() == reflect.String {
+		desc = fmt.Sprintf("greater than \"%s\"", x)
+	}
+
+	return transformDescription(Not(LessOrEqual(x)), desc)
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/less_or_equal.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/less_or_equal.go
new file mode 100644
index 0000000..8402cde
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/less_or_equal.go
@@ -0,0 +1,41 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// LessOrEqual returns a matcher that matches integer, floating point, or
+// strings values v such that v <= x. Comparison is not defined between numeric
+// and string types, but is defined between all integer and floating point
+// types.
+//
+// x must itself be an integer, floating point, or string type; otherwise,
+// LessOrEqual will panic.
+func LessOrEqual(x interface{}) Matcher {
+	desc := fmt.Sprintf("less than or equal to %v", x)
+
+	// Special case: make it clear that strings are strings.
+	if reflect.TypeOf(x).Kind() == reflect.String {
+		desc = fmt.Sprintf("less than or equal to \"%s\"", x)
+	}
+
+	// Put LessThan last so that its error messages will be used in the event of
+	// failure.
+	return transformDescription(AnyOf(Equals(x), LessThan(x)), desc)
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/less_than.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/less_than.go
new file mode 100644
index 0000000..8258e45
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/less_than.go
@@ -0,0 +1,152 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"math"
+	"reflect"
+)
+
+// LessThan returns a matcher that matches integer, floating point, or strings
+// values v such that v < x. Comparison is not defined between numeric and
+// string types, but is defined between all integer and floating point types.
+//
+// x must itself be an integer, floating point, or string type; otherwise,
+// LessThan will panic.
+func LessThan(x interface{}) Matcher {
+	v := reflect.ValueOf(x)
+	kind := v.Kind()
+
+	switch {
+	case isInteger(v):
+	case isFloat(v):
+	case kind == reflect.String:
+
+	default:
+		panic(fmt.Sprintf("LessThan: unexpected kind %v", kind))
+	}
+
+	return &lessThanMatcher{v}
+}
+
+type lessThanMatcher struct {
+	limit reflect.Value
+}
+
+func (m *lessThanMatcher) Description() string {
+	// Special case: make it clear that strings are strings.
+	if m.limit.Kind() == reflect.String {
+		return fmt.Sprintf("less than \"%s\"", m.limit.String())
+	}
+
+	return fmt.Sprintf("less than %v", m.limit.Interface())
+}
+
+func compareIntegers(v1, v2 reflect.Value) (err error) {
+	err = errors.New("")
+
+	switch {
+	case isSignedInteger(v1) && isSignedInteger(v2):
+		if v1.Int() < v2.Int() {
+			err = nil
+		}
+		return
+
+	case isSignedInteger(v1) && isUnsignedInteger(v2):
+		if v1.Int() < 0 || uint64(v1.Int()) < v2.Uint() {
+			err = nil
+		}
+		return
+
+	case isUnsignedInteger(v1) && isSignedInteger(v2):
+		if v1.Uint() <= math.MaxInt64 && int64(v1.Uint()) < v2.Int() {
+			err = nil
+		}
+		return
+
+	case isUnsignedInteger(v1) && isUnsignedInteger(v2):
+		if v1.Uint() < v2.Uint() {
+			err = nil
+		}
+		return
+	}
+
+	panic(fmt.Sprintf("compareIntegers: %v %v", v1, v2))
+}
+
+func getFloat(v reflect.Value) float64 {
+	switch {
+	case isSignedInteger(v):
+		return float64(v.Int())
+
+	case isUnsignedInteger(v):
+		return float64(v.Uint())
+
+	case isFloat(v):
+		return v.Float()
+	}
+
+	panic(fmt.Sprintf("getFloat: %v", v))
+}
+
+func (m *lessThanMatcher) Matches(c interface{}) (err error) {
+	v1 := reflect.ValueOf(c)
+	v2 := m.limit
+
+	err = errors.New("")
+
+	// Handle strings as a special case.
+	if v1.Kind() == reflect.String && v2.Kind() == reflect.String {
+		if v1.String() < v2.String() {
+			err = nil
+		}
+		return
+	}
+
+	// If we get here, we require that we are dealing with integers or floats.
+	v1Legal := isInteger(v1) || isFloat(v1)
+	v2Legal := isInteger(v2) || isFloat(v2)
+	if !v1Legal || !v2Legal {
+		err = NewFatalError("which is not comparable")
+		return
+	}
+
+	// Handle the various comparison cases.
+	switch {
+	// Both integers
+	case isInteger(v1) && isInteger(v2):
+		return compareIntegers(v1, v2)
+
+	// At least one float32
+	case v1.Kind() == reflect.Float32 || v2.Kind() == reflect.Float32:
+		if float32(getFloat(v1)) < float32(getFloat(v2)) {
+			err = nil
+		}
+		return
+
+	// At least one float64
+	case v1.Kind() == reflect.Float64 || v2.Kind() == reflect.Float64:
+		if getFloat(v1) < getFloat(v2) {
+			err = nil
+		}
+		return
+	}
+
+	// We shouldn't get here.
+	panic(fmt.Sprintf("lessThanMatcher.Matches: Shouldn't get here: %v %v", v1, v2))
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/matcher.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/matcher.go
new file mode 100644
index 0000000..78159a0
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/matcher.go
@@ -0,0 +1,86 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package oglematchers provides a set of matchers useful in a testing or
+// mocking framework. These matchers are inspired by and mostly compatible with
+// Google Test for C++ and Google JS Test.
+//
+// This package is used by github.com/smartystreets/assertions/internal/ogletest and
+// github.com/smartystreets/assertions/internal/oglemock, which may be more directly useful if you're not
+// writing your own testing package or defining your own matchers.
+package oglematchers
+
+// A Matcher is some predicate implicitly defining a set of values that it
+// matches. For example, GreaterThan(17) matches all numeric values greater
+// than 17, and HasSubstr("taco") matches all strings with the substring
+// "taco".
+//
+// Matchers are typically exposed to tests via constructor functions like
+// HasSubstr. In order to implement such a function you can either define your
+// own matcher type or use NewMatcher.
+type Matcher interface {
+	// Check whether the supplied value belongs to the the set defined by the
+	// matcher. Return a non-nil error if and only if it does not.
+	//
+	// The error describes why the value doesn't match. The error text is a
+	// relative clause that is suitable for being placed after the value. For
+	// example, a predicate that matches strings with a particular substring may,
+	// when presented with a numerical value, return the following error text:
+	//
+	//     "which is not a string"
+	//
+	// Then the failure message may look like:
+	//
+	//     Expected: has substring "taco"
+	//     Actual:   17, which is not a string
+	//
+	// If the error is self-apparent based on the description of the matcher, the
+	// error text may be empty (but the error still non-nil). For example:
+	//
+	//     Expected: 17
+	//     Actual:   19
+	//
+	// If you are implementing a new matcher, see also the documentation on
+	// FatalError.
+	Matches(candidate interface{}) error
+
+	// Description returns a string describing the property that values matching
+	// this matcher have, as a verb phrase where the subject is the value. For
+	// example, "is greather than 17" or "has substring "taco"".
+	Description() string
+}
+
+// FatalError is an implementation of the error interface that may be returned
+// from matchers, indicating the error should be propagated. Returning a
+// *FatalError indicates that the matcher doesn't process values of the
+// supplied type, or otherwise doesn't know how to handle the value.
+//
+// For example, if GreaterThan(17) returned false for the value "taco" without
+// a fatal error, then Not(GreaterThan(17)) would return true. This is
+// technically correct, but is surprising and may mask failures where the wrong
+// sort of matcher is accidentally used. Instead, GreaterThan(17) can return a
+// fatal error, which will be propagated by Not().
+type FatalError struct {
+	errorText string
+}
+
+// NewFatalError creates a FatalError struct with the supplied error text.
+func NewFatalError(s string) *FatalError {
+	return &FatalError{s}
+}
+
+func (e *FatalError) Error() string {
+	return e.errorText
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/not.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/not.go
new file mode 100644
index 0000000..623789f
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/not.go
@@ -0,0 +1,53 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+)
+
+// Not returns a matcher that inverts the set of values matched by the wrapped
+// matcher. It does not transform the result for values for which the wrapped
+// matcher returns a fatal error.
+func Not(m Matcher) Matcher {
+	return &notMatcher{m}
+}
+
+type notMatcher struct {
+	wrapped Matcher
+}
+
+func (m *notMatcher) Matches(c interface{}) (err error) {
+	err = m.wrapped.Matches(c)
+
+	// Did the wrapped matcher say yes?
+	if err == nil {
+		return errors.New("")
+	}
+
+	// Did the wrapped matcher return a fatal error?
+	if _, isFatal := err.(*FatalError); isFatal {
+		return err
+	}
+
+	// The wrapped matcher returned a non-fatal error.
+	return nil
+}
+
+func (m *notMatcher) Description() string {
+	return fmt.Sprintf("not(%s)", m.wrapped.Description())
+}
diff --git a/vendor/github.com/smartystreets/assertions/internal/oglematchers/transform_description.go b/vendor/github.com/smartystreets/assertions/internal/oglematchers/transform_description.go
new file mode 100644
index 0000000..8ea2807
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/internal/oglematchers/transform_description.go
@@ -0,0 +1,36 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+// transformDescription returns a matcher that is equivalent to the supplied
+// one, except that it has the supplied description instead of the one attached
+// to the existing matcher.
+func transformDescription(m Matcher, newDesc string) Matcher {
+	return &transformDescriptionMatcher{newDesc, m}
+}
+
+type transformDescriptionMatcher struct {
+	desc           string
+	wrappedMatcher Matcher
+}
+
+func (m *transformDescriptionMatcher) Description() string {
+	return m.desc
+}
+
+func (m *transformDescriptionMatcher) Matches(c interface{}) error {
+	return m.wrappedMatcher.Matches(c)
+}
diff --git a/vendor/github.com/smartystreets/assertions/messages.go b/vendor/github.com/smartystreets/assertions/messages.go
new file mode 100644
index 0000000..6ed7dc2
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/messages.go
@@ -0,0 +1,97 @@
+package assertions
+
+const ( // equality
+	shouldHaveBeenEqual             = "Expected: '%v'\nActual:   '%v'\n(Should be equal)"
+	shouldNotHaveBeenEqual          = "Expected     '%v'\nto NOT equal '%v'\n(but it did)!"
+	shouldHaveBeenEqualTypeMismatch = "Expected: '%v' (%T)\nActual:   '%v' (%T)\n(Should be equal, type mismatch)"
+	shouldHaveBeenAlmostEqual       = "Expected '%v' to almost equal '%v' (but it didn't)!"
+	shouldHaveNotBeenAlmostEqual    = "Expected '%v' to NOT almost equal '%v' (but it did)!"
+	shouldHaveResembled             = "Expected: '%s'\nActual:   '%s'\n(Should resemble)!"
+	shouldNotHaveResembled          = "Expected        '%#v'\nto NOT resemble '%#v'\n(but it did)!"
+	shouldBePointers                = "Both arguments should be pointers "
+	shouldHaveBeenNonNilPointer     = shouldBePointers + "(the %s was %s)!"
+	shouldHavePointedTo             = "Expected '%+v' (address: '%v') and '%+v' (address: '%v') to be the same address (but their weren't)!"
+	shouldNotHavePointedTo          = "Expected '%+v' and '%+v' to be different references (but they matched: '%v')!"
+	shouldHaveBeenNil               = "Expected: nil\nActual:   '%v'"
+	shouldNotHaveBeenNil            = "Expected '%+v' to NOT be nil (but it was)!"
+	shouldHaveBeenTrue              = "Expected: true\nActual:   %v"
+	shouldHaveBeenFalse             = "Expected: false\nActual:   %v"
+	shouldHaveBeenZeroValue         = "'%+v' should have been the zero value" //"Expected: (zero value)\nActual:   %v"
+	shouldNotHaveBeenZeroValue      = "'%+v' should NOT have been the zero value"
+)
+
+const ( // quantity comparisons
+	shouldHaveBeenGreater            = "Expected '%v' to be greater than '%v' (but it wasn't)!"
+	shouldHaveBeenGreaterOrEqual     = "Expected '%v' to be greater than or equal to '%v' (but it wasn't)!"
+	shouldHaveBeenLess               = "Expected '%v' to be less than '%v' (but it wasn't)!"
+	shouldHaveBeenLessOrEqual        = "Expected '%v' to be less than or equal to '%v' (but it wasn't)!"
+	shouldHaveBeenBetween            = "Expected '%v' to be between '%v' and '%v' (but it wasn't)!"
+	shouldNotHaveBeenBetween         = "Expected '%v' NOT to be between '%v' and '%v' (but it was)!"
+	shouldHaveDifferentUpperAndLower = "The lower and upper bounds must be different values (they were both '%v')."
+	shouldHaveBeenBetweenOrEqual     = "Expected '%v' to be between '%v' and '%v' or equal to one of them (but it wasn't)!"
+	shouldNotHaveBeenBetweenOrEqual  = "Expected '%v' NOT to be between '%v' and '%v' or equal to one of them (but it was)!"
+)
+
+const ( // collections
+	shouldHaveContained            = "Expected the container (%v) to contain: '%v' (but it didn't)!"
+	shouldNotHaveContained         = "Expected the container (%v) NOT to contain: '%v' (but it did)!"
+	shouldHaveContainedKey         = "Expected the %v to contain the key: %v (but it didn't)!"
+	shouldNotHaveContainedKey      = "Expected the %v NOT to contain the key: %v (but it did)!"
+	shouldHaveBeenIn               = "Expected '%v' to be in the container (%v), but it wasn't!"
+	shouldNotHaveBeenIn            = "Expected '%v' NOT to be in the container (%v), but it was!"
+	shouldHaveBeenAValidCollection = "You must provide a valid container (was %v)!"
+	shouldHaveBeenAValidMap        = "You must provide a valid map type (was %v)!"
+	shouldHaveBeenEmpty            = "Expected %+v to be empty (but it wasn't)!"
+	shouldNotHaveBeenEmpty         = "Expected %+v to NOT be empty (but it was)!"
+	shouldHaveBeenAValidInteger    = "You must provide a valid integer (was %v)!"
+	shouldHaveBeenAValidLength     = "You must provide a valid positive integer (was %v)!"
+	shouldHaveHadLength            = "Expected collection to have length equal to [%v], but it's length was [%v] instead! contents: %+v"
+)
+
+const ( // strings
+	shouldHaveStartedWith           = "Expected      '%v'\nto start with '%v'\n(but it didn't)!"
+	shouldNotHaveStartedWith        = "Expected          '%v'\nNOT to start with '%v'\n(but it did)!"
+	shouldHaveEndedWith             = "Expected    '%v'\nto end with '%v'\n(but it didn't)!"
+	shouldNotHaveEndedWith          = "Expected        '%v'\nNOT to end with '%v'\n(but it did)!"
+	shouldAllBeStrings              = "All arguments to this assertion must be strings (you provided: %v)."
+	shouldBothBeStrings             = "Both arguments to this assertion must be strings (you provided %v and %v)."
+	shouldBeString                  = "The argument to this assertion must be a string (you provided %v)."
+	shouldHaveContainedSubstring    = "Expected '%s' to contain substring '%s' (but it didn't)!"
+	shouldNotHaveContainedSubstring = "Expected '%s' NOT to contain substring '%s' (but it did)!"
+	shouldHaveBeenBlank             = "Expected '%s' to be blank (but it wasn't)!"
+	shouldNotHaveBeenBlank          = "Expected value to NOT be blank (but it was)!"
+)
+
+const ( // panics
+	shouldUseVoidNiladicFunction = "You must provide a void, niladic function as the first argument!"
+	shouldHavePanickedWith       = "Expected func() to panic with '%v' (but it panicked with '%v')!"
+	shouldHavePanicked           = "Expected func() to panic (but it didn't)!"
+	shouldNotHavePanicked        = "Expected func() NOT to panic (error: '%+v')!"
+	shouldNotHavePanickedWith    = "Expected func() NOT to panic with '%v' (but it did)!"
+)
+
+const ( // type checking
+	shouldHaveBeenA    = "Expected '%v' to be: '%v' (but was: '%v')!"
+	shouldNotHaveBeenA = "Expected '%v' to NOT be: '%v' (but it was)!"
+
+	shouldHaveImplemented             = "Expected: '%v interface support'\nActual:   '%v' does not implement the interface!"
+	shouldNotHaveImplemented          = "Expected         '%v'\nto NOT implement '%v'\n(but it did)!"
+	shouldCompareWithInterfacePointer = "The expected value must be a pointer to an interface type (eg. *fmt.Stringer)"
+	shouldNotBeNilActual              = "The actual value was 'nil' and should be a value or a pointer to a value!"
+
+	shouldBeError                       = "Expected an error value (but was '%v' instead)!"
+	shouldBeErrorInvalidComparisonValue = "The final argument to this assertion must be a string or an error value (you provided: '%v')."
+)
+
+const ( // time comparisons
+	shouldUseTimes                   = "You must provide time instances as arguments to this assertion."
+	shouldUseTimeSlice               = "You must provide a slice of time instances as the first argument to this assertion."
+	shouldUseDurationAndTime         = "You must provide a duration and a time as arguments to this assertion."
+	shouldHaveHappenedBefore         = "Expected '%v' to happen before '%v' (it happened '%v' after)!"
+	shouldHaveHappenedAfter          = "Expected '%v' to happen after '%v' (it happened '%v' before)!"
+	shouldHaveHappenedBetween        = "Expected '%v' to happen between '%v' and '%v' (it happened '%v' outside threshold)!"
+	shouldNotHaveHappenedOnOrBetween = "Expected '%v' to NOT happen on or between '%v' and '%v' (but it did)!"
+
+	// format params: incorrect-index, previous-index, previous-time, incorrect-index, incorrect-time
+	shouldHaveBeenChronological = "The 'Time' at index [%d] should have happened after the previous one (but it didn't!):\n  [%d]: %s\n  [%d]: %s (see, it happened before!)"
+)
diff --git a/vendor/github.com/smartystreets/assertions/panic.go b/vendor/github.com/smartystreets/assertions/panic.go
new file mode 100644
index 0000000..7e75db1
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/panic.go
@@ -0,0 +1,115 @@
+package assertions
+
+import "fmt"
+
+// ShouldPanic receives a void, niladic function and expects to recover a panic.
+func ShouldPanic(actual interface{}, expected ...interface{}) (message string) {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+
+	action, _ := actual.(func())
+
+	if action == nil {
+		message = shouldUseVoidNiladicFunction
+		return
+	}
+
+	defer func() {
+		recovered := recover()
+		if recovered == nil {
+			message = shouldHavePanicked
+		} else {
+			message = success
+		}
+	}()
+	action()
+
+	return
+}
+
+// ShouldNotPanic receives a void, niladic function and expects to execute the function without any panic.
+func ShouldNotPanic(actual interface{}, expected ...interface{}) (message string) {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+
+	action, _ := actual.(func())
+
+	if action == nil {
+		message = shouldUseVoidNiladicFunction
+		return
+	}
+
+	defer func() {
+		recovered := recover()
+		if recovered != nil {
+			message = fmt.Sprintf(shouldNotHavePanicked, recovered)
+		} else {
+			message = success
+		}
+	}()
+	action()
+
+	return
+}
+
+// ShouldPanicWith receives a void, niladic function and expects to recover a panic with the second argument as the content.
+func ShouldPanicWith(actual interface{}, expected ...interface{}) (message string) {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	action, _ := actual.(func())
+
+	if action == nil {
+		message = shouldUseVoidNiladicFunction
+		return
+	}
+
+	defer func() {
+		recovered := recover()
+		if recovered == nil {
+			message = shouldHavePanicked
+		} else {
+			if equal := ShouldEqual(recovered, expected[0]); equal != success {
+				message = serializer.serialize(expected[0], recovered, fmt.Sprintf(shouldHavePanickedWith, expected[0], recovered))
+			} else {
+				message = success
+			}
+		}
+	}()
+	action()
+
+	return
+}
+
+// ShouldNotPanicWith receives a void, niladic function and expects to recover a panic whose content differs from the second argument.
+func ShouldNotPanicWith(actual interface{}, expected ...interface{}) (message string) {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	action, _ := actual.(func())
+
+	if action == nil {
+		message = shouldUseVoidNiladicFunction
+		return
+	}
+
+	defer func() {
+		recovered := recover()
+		if recovered == nil {
+			message = success
+		} else {
+			if equal := ShouldEqual(recovered, expected[0]); equal == success {
+				message = fmt.Sprintf(shouldNotHavePanickedWith, expected[0])
+			} else {
+				message = success
+			}
+		}
+	}()
+	action()
+
+	return
+}
diff --git a/vendor/github.com/smartystreets/assertions/quantity.go b/vendor/github.com/smartystreets/assertions/quantity.go
new file mode 100644
index 0000000..f28b0a0
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/quantity.go
@@ -0,0 +1,141 @@
+package assertions
+
+import (
+	"fmt"
+
+	"github.com/smartystreets/assertions/internal/oglematchers"
+)
+
+// ShouldBeGreaterThan receives exactly two parameters and ensures that the first is greater than the second.
+func ShouldBeGreaterThan(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	if matchError := oglematchers.GreaterThan(expected[0]).Matches(actual); matchError != nil {
+		return fmt.Sprintf(shouldHaveBeenGreater, actual, expected[0])
+	}
+	return success
+}
+
+// ShouldBeGreaterThanOrEqualTo receives exactly two parameters and ensures that the first is greater than or equal to the second.
+func ShouldBeGreaterThanOrEqualTo(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	} else if matchError := oglematchers.GreaterOrEqual(expected[0]).Matches(actual); matchError != nil {
+		return fmt.Sprintf(shouldHaveBeenGreaterOrEqual, actual, expected[0])
+	}
+	return success
+}
+
+// ShouldBeLessThan receives exactly two parameters and ensures that the first is less than the second.
+func ShouldBeLessThan(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	} else if matchError := oglematchers.LessThan(expected[0]).Matches(actual); matchError != nil {
+		return fmt.Sprintf(shouldHaveBeenLess, actual, expected[0])
+	}
+	return success
+}
+
+// ShouldBeLessThan receives exactly two parameters and ensures that the first is less than or equal to the second.
+func ShouldBeLessThanOrEqualTo(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	} else if matchError := oglematchers.LessOrEqual(expected[0]).Matches(actual); matchError != nil {
+		return fmt.Sprintf(shouldHaveBeenLessOrEqual, actual, expected[0])
+	}
+	return success
+}
+
+// ShouldBeBetween receives exactly three parameters: an actual value, a lower bound, and an upper bound.
+// It ensures that the actual value is between both bounds (but not equal to either of them).
+func ShouldBeBetween(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	lower, upper, fail := deriveBounds(expected)
+
+	if fail != success {
+		return fail
+	} else if !isBetween(actual, lower, upper) {
+		return fmt.Sprintf(shouldHaveBeenBetween, actual, lower, upper)
+	}
+	return success
+}
+
+// ShouldNotBeBetween receives exactly three parameters: an actual value, a lower bound, and an upper bound.
+// It ensures that the actual value is NOT between both bounds.
+func ShouldNotBeBetween(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	lower, upper, fail := deriveBounds(expected)
+
+	if fail != success {
+		return fail
+	} else if isBetween(actual, lower, upper) {
+		return fmt.Sprintf(shouldNotHaveBeenBetween, actual, lower, upper)
+	}
+	return success
+}
+func deriveBounds(values []interface{}) (lower interface{}, upper interface{}, fail string) {
+	lower = values[0]
+	upper = values[1]
+
+	if ShouldNotEqual(lower, upper) != success {
+		return nil, nil, fmt.Sprintf(shouldHaveDifferentUpperAndLower, lower)
+	} else if ShouldBeLessThan(lower, upper) != success {
+		lower, upper = upper, lower
+	}
+	return lower, upper, success
+}
+func isBetween(value, lower, upper interface{}) bool {
+	if ShouldBeGreaterThan(value, lower) != success {
+		return false
+	} else if ShouldBeLessThan(value, upper) != success {
+		return false
+	}
+	return true
+}
+
+// ShouldBeBetweenOrEqual receives exactly three parameters: an actual value, a lower bound, and an upper bound.
+// It ensures that the actual value is between both bounds or equal to one of them.
+func ShouldBeBetweenOrEqual(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	lower, upper, fail := deriveBounds(expected)
+
+	if fail != success {
+		return fail
+	} else if !isBetweenOrEqual(actual, lower, upper) {
+		return fmt.Sprintf(shouldHaveBeenBetweenOrEqual, actual, lower, upper)
+	}
+	return success
+}
+
+// ShouldNotBeBetweenOrEqual receives exactly three parameters: an actual value, a lower bound, and an upper bound.
+// It ensures that the actual value is nopt between the bounds nor equal to either of them.
+func ShouldNotBeBetweenOrEqual(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	lower, upper, fail := deriveBounds(expected)
+
+	if fail != success {
+		return fail
+	} else if isBetweenOrEqual(actual, lower, upper) {
+		return fmt.Sprintf(shouldNotHaveBeenBetweenOrEqual, actual, lower, upper)
+	}
+	return success
+}
+
+func isBetweenOrEqual(value, lower, upper interface{}) bool {
+	if ShouldBeGreaterThanOrEqualTo(value, lower) != success {
+		return false
+	} else if ShouldBeLessThanOrEqualTo(value, upper) != success {
+		return false
+	}
+	return true
+}
diff --git a/vendor/github.com/smartystreets/assertions/serializer.go b/vendor/github.com/smartystreets/assertions/serializer.go
new file mode 100644
index 0000000..fa32f94
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/serializer.go
@@ -0,0 +1,63 @@
+package assertions
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/smartystreets/assertions/internal/go-render/render"
+)
+
+type Serializer interface {
+	serialize(expected, actual interface{}, message string) string
+	serializeDetailed(expected, actual interface{}, message string) string
+}
+
+type failureSerializer struct{}
+
+func (self *failureSerializer) serializeDetailed(expected, actual interface{}, message string) string {
+	view := FailureView{
+		Message:  message,
+		Expected: render.Render(expected),
+		Actual:   render.Render(actual),
+	}
+	serialized, _ := json.Marshal(view)
+	return string(serialized)
+}
+
+func (self *failureSerializer) serialize(expected, actual interface{}, message string) string {
+	view := FailureView{
+		Message:  message,
+		Expected: fmt.Sprintf("%+v", expected),
+		Actual:   fmt.Sprintf("%+v", actual),
+	}
+	serialized, _ := json.Marshal(view)
+	return string(serialized)
+}
+
+func newSerializer() *failureSerializer {
+	return &failureSerializer{}
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+// This struct is also declared in github.com/smartystreets/goconvey/convey/reporting.
+// The json struct tags should be equal in both declarations.
+type FailureView struct {
+	Message  string `json:"Message"`
+	Expected string `json:"Expected"`
+	Actual   string `json:"Actual"`
+}
+
+///////////////////////////////////////////////////////
+
+// noopSerializer just gives back the original message. This is useful when we are using
+// the assertions from a context other than the GoConvey Web UI, that requires the JSON
+// structure provided by the failureSerializer.
+type noopSerializer struct{}
+
+func (self *noopSerializer) serialize(expected, actual interface{}, message string) string {
+	return message
+}
+func (self *noopSerializer) serializeDetailed(expected, actual interface{}, message string) string {
+	return message
+}
diff --git a/vendor/github.com/smartystreets/assertions/strings.go b/vendor/github.com/smartystreets/assertions/strings.go
new file mode 100644
index 0000000..dbc3f04
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/strings.go
@@ -0,0 +1,227 @@
+package assertions
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// ShouldStartWith receives exactly 2 string parameters and ensures that the first starts with the second.
+func ShouldStartWith(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	value, valueIsString := actual.(string)
+	prefix, prefixIsString := expected[0].(string)
+
+	if !valueIsString || !prefixIsString {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	return shouldStartWith(value, prefix)
+}
+func shouldStartWith(value, prefix string) string {
+	if !strings.HasPrefix(value, prefix) {
+		shortval := value
+		if len(shortval) > len(prefix) {
+			shortval = shortval[:len(prefix)] + "..."
+		}
+		return serializer.serialize(prefix, shortval, fmt.Sprintf(shouldHaveStartedWith, value, prefix))
+	}
+	return success
+}
+
+// ShouldNotStartWith receives exactly 2 string parameters and ensures that the first does not start with the second.
+func ShouldNotStartWith(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	value, valueIsString := actual.(string)
+	prefix, prefixIsString := expected[0].(string)
+
+	if !valueIsString || !prefixIsString {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	return shouldNotStartWith(value, prefix)
+}
+func shouldNotStartWith(value, prefix string) string {
+	if strings.HasPrefix(value, prefix) {
+		if value == "" {
+			value = "<empty>"
+		}
+		if prefix == "" {
+			prefix = "<empty>"
+		}
+		return fmt.Sprintf(shouldNotHaveStartedWith, value, prefix)
+	}
+	return success
+}
+
+// ShouldEndWith receives exactly 2 string parameters and ensures that the first ends with the second.
+func ShouldEndWith(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	value, valueIsString := actual.(string)
+	suffix, suffixIsString := expected[0].(string)
+
+	if !valueIsString || !suffixIsString {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	return shouldEndWith(value, suffix)
+}
+func shouldEndWith(value, suffix string) string {
+	if !strings.HasSuffix(value, suffix) {
+		shortval := value
+		if len(shortval) > len(suffix) {
+			shortval = "..." + shortval[len(shortval)-len(suffix):]
+		}
+		return serializer.serialize(suffix, shortval, fmt.Sprintf(shouldHaveEndedWith, value, suffix))
+	}
+	return success
+}
+
+// ShouldEndWith receives exactly 2 string parameters and ensures that the first does not end with the second.
+func ShouldNotEndWith(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	value, valueIsString := actual.(string)
+	suffix, suffixIsString := expected[0].(string)
+
+	if !valueIsString || !suffixIsString {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	return shouldNotEndWith(value, suffix)
+}
+func shouldNotEndWith(value, suffix string) string {
+	if strings.HasSuffix(value, suffix) {
+		if value == "" {
+			value = "<empty>"
+		}
+		if suffix == "" {
+			suffix = "<empty>"
+		}
+		return fmt.Sprintf(shouldNotHaveEndedWith, value, suffix)
+	}
+	return success
+}
+
+// ShouldContainSubstring receives exactly 2 string parameters and ensures that the first contains the second as a substring.
+func ShouldContainSubstring(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	long, longOk := actual.(string)
+	short, shortOk := expected[0].(string)
+
+	if !longOk || !shortOk {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	if !strings.Contains(long, short) {
+		return serializer.serialize(expected[0], actual, fmt.Sprintf(shouldHaveContainedSubstring, long, short))
+	}
+	return success
+}
+
+// ShouldNotContainSubstring receives exactly 2 string parameters and ensures that the first does NOT contain the second as a substring.
+func ShouldNotContainSubstring(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	long, longOk := actual.(string)
+	short, shortOk := expected[0].(string)
+
+	if !longOk || !shortOk {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	if strings.Contains(long, short) {
+		return fmt.Sprintf(shouldNotHaveContainedSubstring, long, short)
+	}
+	return success
+}
+
+// ShouldBeBlank receives exactly 1 string parameter and ensures that it is equal to "".
+func ShouldBeBlank(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+	value, ok := actual.(string)
+	if !ok {
+		return fmt.Sprintf(shouldBeString, reflect.TypeOf(actual))
+	}
+	if value != "" {
+		return serializer.serialize("", value, fmt.Sprintf(shouldHaveBeenBlank, value))
+	}
+	return success
+}
+
+// ShouldNotBeBlank receives exactly 1 string parameter and ensures that it is equal to "".
+func ShouldNotBeBlank(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+	value, ok := actual.(string)
+	if !ok {
+		return fmt.Sprintf(shouldBeString, reflect.TypeOf(actual))
+	}
+	if value == "" {
+		return shouldNotHaveBeenBlank
+	}
+	return success
+}
+
+// ShouldEqualWithout receives exactly 3 string parameters and ensures that the first is equal to the second
+// after removing all instances of the third from the first using strings.Replace(first, third, "", -1).
+func ShouldEqualWithout(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	actualString, ok1 := actual.(string)
+	expectedString, ok2 := expected[0].(string)
+	replace, ok3 := expected[1].(string)
+
+	if !ok1 || !ok2 || !ok3 {
+		return fmt.Sprintf(shouldAllBeStrings, []reflect.Type{
+			reflect.TypeOf(actual),
+			reflect.TypeOf(expected[0]),
+			reflect.TypeOf(expected[1]),
+		})
+	}
+
+	replaced := strings.Replace(actualString, replace, "", -1)
+	if replaced == expectedString {
+		return ""
+	}
+
+	return fmt.Sprintf("Expected '%s' to equal '%s' but without any '%s' (but it didn't).", actualString, expectedString, replace)
+}
+
+// ShouldEqualTrimSpace receives exactly 2 string parameters and ensures that the first is equal to the second
+// after removing all leading and trailing whitespace using strings.TrimSpace(first).
+func ShouldEqualTrimSpace(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	actualString, valueIsString := actual.(string)
+	_, value2IsString := expected[0].(string)
+
+	if !valueIsString || !value2IsString {
+		return fmt.Sprintf(shouldBothBeStrings, reflect.TypeOf(actual), reflect.TypeOf(expected[0]))
+	}
+
+	actualString = strings.TrimSpace(actualString)
+	return ShouldEqual(actualString, expected[0])
+}
diff --git a/vendor/github.com/smartystreets/assertions/time.go b/vendor/github.com/smartystreets/assertions/time.go
new file mode 100644
index 0000000..7e05026
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/time.go
@@ -0,0 +1,202 @@
+package assertions
+
+import (
+	"fmt"
+	"time"
+)
+
+// ShouldHappenBefore receives exactly 2 time.Time arguments and asserts that the first happens before the second.
+func ShouldHappenBefore(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	expectedTime, secondOk := expected[0].(time.Time)
+
+	if !firstOk || !secondOk {
+		return shouldUseTimes
+	}
+
+	if !actualTime.Before(expectedTime) {
+		return fmt.Sprintf(shouldHaveHappenedBefore, actualTime, expectedTime, actualTime.Sub(expectedTime))
+	}
+
+	return success
+}
+
+// ShouldHappenOnOrBefore receives exactly 2 time.Time arguments and asserts that the first happens on or before the second.
+func ShouldHappenOnOrBefore(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	expectedTime, secondOk := expected[0].(time.Time)
+
+	if !firstOk || !secondOk {
+		return shouldUseTimes
+	}
+
+	if actualTime.Equal(expectedTime) {
+		return success
+	}
+	return ShouldHappenBefore(actualTime, expectedTime)
+}
+
+// ShouldHappenAfter receives exactly 2 time.Time arguments and asserts that the first happens after the second.
+func ShouldHappenAfter(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	expectedTime, secondOk := expected[0].(time.Time)
+
+	if !firstOk || !secondOk {
+		return shouldUseTimes
+	}
+	if !actualTime.After(expectedTime) {
+		return fmt.Sprintf(shouldHaveHappenedAfter, actualTime, expectedTime, expectedTime.Sub(actualTime))
+	}
+	return success
+}
+
+// ShouldHappenOnOrAfter receives exactly 2 time.Time arguments and asserts that the first happens on or after the second.
+func ShouldHappenOnOrAfter(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	expectedTime, secondOk := expected[0].(time.Time)
+
+	if !firstOk || !secondOk {
+		return shouldUseTimes
+	}
+	if actualTime.Equal(expectedTime) {
+		return success
+	}
+	return ShouldHappenAfter(actualTime, expectedTime)
+}
+
+// ShouldHappenBetween receives exactly 3 time.Time arguments and asserts that the first happens between (not on) the second and third.
+func ShouldHappenBetween(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	min, secondOk := expected[0].(time.Time)
+	max, thirdOk := expected[1].(time.Time)
+
+	if !firstOk || !secondOk || !thirdOk {
+		return shouldUseTimes
+	}
+
+	if !actualTime.After(min) {
+		return fmt.Sprintf(shouldHaveHappenedBetween, actualTime, min, max, min.Sub(actualTime))
+	}
+	if !actualTime.Before(max) {
+		return fmt.Sprintf(shouldHaveHappenedBetween, actualTime, min, max, actualTime.Sub(max))
+	}
+	return success
+}
+
+// ShouldHappenOnOrBetween receives exactly 3 time.Time arguments and asserts that the first happens between or on the second and third.
+func ShouldHappenOnOrBetween(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	min, secondOk := expected[0].(time.Time)
+	max, thirdOk := expected[1].(time.Time)
+
+	if !firstOk || !secondOk || !thirdOk {
+		return shouldUseTimes
+	}
+	if actualTime.Equal(min) || actualTime.Equal(max) {
+		return success
+	}
+	return ShouldHappenBetween(actualTime, min, max)
+}
+
+// ShouldNotHappenOnOrBetween receives exactly 3 time.Time arguments and asserts that the first
+// does NOT happen between or on the second or third.
+func ShouldNotHappenOnOrBetween(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	min, secondOk := expected[0].(time.Time)
+	max, thirdOk := expected[1].(time.Time)
+
+	if !firstOk || !secondOk || !thirdOk {
+		return shouldUseTimes
+	}
+	if actualTime.Equal(min) || actualTime.Equal(max) {
+		return fmt.Sprintf(shouldNotHaveHappenedOnOrBetween, actualTime, min, max)
+	}
+	if actualTime.After(min) && actualTime.Before(max) {
+		return fmt.Sprintf(shouldNotHaveHappenedOnOrBetween, actualTime, min, max)
+	}
+	return success
+}
+
+// ShouldHappenWithin receives a time.Time, a time.Duration, and a time.Time (3 arguments)
+// and asserts that the first time.Time happens within or on the duration specified relative to
+// the other time.Time.
+func ShouldHappenWithin(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	tolerance, secondOk := expected[0].(time.Duration)
+	threshold, thirdOk := expected[1].(time.Time)
+
+	if !firstOk || !secondOk || !thirdOk {
+		return shouldUseDurationAndTime
+	}
+
+	min := threshold.Add(-tolerance)
+	max := threshold.Add(tolerance)
+	return ShouldHappenOnOrBetween(actualTime, min, max)
+}
+
+// ShouldNotHappenWithin receives a time.Time, a time.Duration, and a time.Time (3 arguments)
+// and asserts that the first time.Time does NOT happen within or on the duration specified relative to
+// the other time.Time.
+func ShouldNotHappenWithin(actual interface{}, expected ...interface{}) string {
+	if fail := need(2, expected); fail != success {
+		return fail
+	}
+	actualTime, firstOk := actual.(time.Time)
+	tolerance, secondOk := expected[0].(time.Duration)
+	threshold, thirdOk := expected[1].(time.Time)
+
+	if !firstOk || !secondOk || !thirdOk {
+		return shouldUseDurationAndTime
+	}
+
+	min := threshold.Add(-tolerance)
+	max := threshold.Add(tolerance)
+	return ShouldNotHappenOnOrBetween(actualTime, min, max)
+}
+
+// ShouldBeChronological receives a []time.Time slice and asserts that the are
+// in chronological order starting with the first time.Time as the earliest.
+func ShouldBeChronological(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+
+	times, ok := actual.([]time.Time)
+	if !ok {
+		return shouldUseTimeSlice
+	}
+
+	var previous time.Time
+	for i, current := range times {
+		if i > 0 && current.Before(previous) {
+			return fmt.Sprintf(shouldHaveBeenChronological,
+				i, i-1, previous.String(), i, current.String())
+		}
+		previous = current
+	}
+	return ""
+}
diff --git a/vendor/github.com/smartystreets/assertions/type.go b/vendor/github.com/smartystreets/assertions/type.go
new file mode 100644
index 0000000..d2d1dc8
--- /dev/null
+++ b/vendor/github.com/smartystreets/assertions/type.go
@@ -0,0 +1,134 @@
+package assertions
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// ShouldHaveSameTypeAs receives exactly two parameters and compares their underlying types for equality.
+func ShouldHaveSameTypeAs(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	first := reflect.TypeOf(actual)
+	second := reflect.TypeOf(expected[0])
+
+	if first != second {
+		return serializer.serialize(second, first, fmt.Sprintf(shouldHaveBeenA, actual, second, first))
+	}
+
+	return success
+}
+
+// ShouldNotHaveSameTypeAs receives exactly two parameters and compares their underlying types for inequality.
+func ShouldNotHaveSameTypeAs(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	}
+
+	first := reflect.TypeOf(actual)
+	second := reflect.TypeOf(expected[0])
+
+	if (actual == nil && expected[0] == nil) || first == second {
+		return fmt.Sprintf(shouldNotHaveBeenA, actual, second)
+	}
+	return success
+}
+
+// ShouldImplement receives exactly two parameters and ensures
+// that the first implements the interface type of the second.
+func ShouldImplement(actual interface{}, expectedList ...interface{}) string {
+	if fail := need(1, expectedList); fail != success {
+		return fail
+	}
+
+	expected := expectedList[0]
+	if fail := ShouldBeNil(expected); fail != success {
+		return shouldCompareWithInterfacePointer
+	}
+
+	if fail := ShouldNotBeNil(actual); fail != success {
+		return shouldNotBeNilActual
+	}
+
+	var actualType reflect.Type
+	if reflect.TypeOf(actual).Kind() != reflect.Ptr {
+		actualType = reflect.PtrTo(reflect.TypeOf(actual))
+	} else {
+		actualType = reflect.TypeOf(actual)
+	}
+
+	expectedType := reflect.TypeOf(expected)
+	if fail := ShouldNotBeNil(expectedType); fail != success {
+		return shouldCompareWithInterfacePointer
+	}
+
+	expectedInterface := expectedType.Elem()
+
+	if !actualType.Implements(expectedInterface) {
+		return fmt.Sprintf(shouldHaveImplemented, expectedInterface, actualType)
+	}
+	return success
+}
+
+// ShouldNotImplement receives exactly two parameters and ensures
+// that the first does NOT implement the interface type of the second.
+func ShouldNotImplement(actual interface{}, expectedList ...interface{}) string {
+	if fail := need(1, expectedList); fail != success {
+		return fail
+	}
+
+	expected := expectedList[0]
+	if fail := ShouldBeNil(expected); fail != success {
+		return shouldCompareWithInterfacePointer
+	}
+
+	if fail := ShouldNotBeNil(actual); fail != success {
+		return shouldNotBeNilActual
+	}
+
+	var actualType reflect.Type
+	if reflect.TypeOf(actual).Kind() != reflect.Ptr {
+		actualType = reflect.PtrTo(reflect.TypeOf(actual))
+	} else {
+		actualType = reflect.TypeOf(actual)
+	}
+
+	expectedType := reflect.TypeOf(expected)
+	if fail := ShouldNotBeNil(expectedType); fail != success {
+		return shouldCompareWithInterfacePointer
+	}
+
+	expectedInterface := expectedType.Elem()
+
+	if actualType.Implements(expectedInterface) {
+		return fmt.Sprintf(shouldNotHaveImplemented, actualType, expectedInterface)
+	}
+	return success
+}
+
+// ShouldBeError asserts that the first argument implements the error interface.
+// It also compares the first argument against the second argument if provided
+// (which must be an error message string or another error value).
+func ShouldBeError(actual interface{}, expected ...interface{}) string {
+	if fail := atMost(1, expected); fail != success {
+		return fail
+	}
+
+	if !isError(actual) {
+		return fmt.Sprintf(shouldBeError, reflect.TypeOf(actual))
+	}
+
+	if len(expected) == 0 {
+		return success
+	}
+
+	if expected := expected[0]; !isString(expected) && !isError(expected) {
+		return fmt.Sprintf(shouldBeErrorInvalidComparisonValue, reflect.TypeOf(expected))
+	}
+	return ShouldEqual(fmt.Sprint(actual), fmt.Sprint(expected[0]))
+}
+
+func isString(value interface{}) bool { _, ok := value.(string); return ok }
+func isError(value interface{}) bool  { _, ok := value.(error); return ok }