1 files changed, 541 insertions, 0 deletions
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())
+}