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authorErik Dalén <dalen@spotify.com>2012-08-07 23:36:20 +0200
committerJeff McCune <jeff@puppetlabs.com>2012-08-14 08:43:36 -0700
commit247b69cbc01741257c3d3b72ad75bb62325eaf49 (patch)
tree9c65541213d5c30e91d3b7e413efc49bf586363c /spec/unit
parentdeafe88e02499a7bdababf0b5dc264fcc3edecf1 (diff)
(#15872) Add to_bytes function
Converts a string like "2 MB" to the value in bytes. Useful for comparisons on facts that return a human readable number instead of machine readable.
Diffstat (limited to 'spec/unit')
-rwxr-xr-xspec/unit/puppet/parser/functions/to_bytes_spec.rb58
1 files changed, 58 insertions, 0 deletions
diff --git a/spec/unit/puppet/parser/functions/to_bytes_spec.rb b/spec/unit/puppet/parser/functions/to_bytes_spec.rb
new file mode 100755
index 0000000..d1ea4c8
--- /dev/null
+++ b/spec/unit/puppet/parser/functions/to_bytes_spec.rb
@@ -0,0 +1,58 @@
+#! /usr/bin/env ruby -S rspec
+
+require 'spec_helper'
+
+describe "the to_bytes function" do
+ let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+ it "should exist" do
+ Puppet::Parser::Functions.function("to_bytes").should == "function_to_bytes"
+ end
+
+ it "should raise a ParseError if there is less than 1 arguments" do
+ lambda { scope.function_to_bytes([]) }.should( raise_error(Puppet::ParseError))
+ end
+
+ it "should convert kB to B" do
+ result = scope.function_to_bytes(["4 kB"])
+ result.should(eq(4096))
+ end
+
+ it "should work without B in unit" do
+ result = scope.function_to_bytes(["4 k"])
+ result.should(eq(4096))
+ end
+
+ it "should work without a space before unit" do
+ result = scope.function_to_bytes(["4k"])
+ result.should(eq(4096))
+ end
+
+ it "should work without a unit" do
+ result = scope.function_to_bytes(["5678"])
+ result.should(eq(5678))
+ end
+
+ it "should convert fractions" do
+ result = scope.function_to_bytes(["1.5 kB"])
+ result.should(eq(1536))
+ end
+
+ it "should convert scientific notation" do
+ result = scope.function_to_bytes(["1.5e2 B"])
+ result.should(eq(150))
+ end
+
+ it "should do nothing with a positive number" do
+ result = scope.function_to_bytes([5678])
+ result.should(eq(5678))
+ end
+
+ it "should should raise a ParseError if input isn't a number" do
+ lambda { scope.function_to_bytes(["foo"]) }.should( raise_error(Puppet::ParseError))
+ end
+
+ it "should should raise a ParseError if prefix is unknown" do
+ lambda { scope.function_to_bytes(["5 uB"]) }.should( raise_error(Puppet::ParseError))
+ end
+end