puppetlabs-stdlib/spec/unit/puppet/parser/functions/to_bytes_spec.rb

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#! /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