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* Other ruby implementations use the spec/ruby directory. [Misc #13792] [ruby-core:82287] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
42 lines
1.3 KiB
Ruby
42 lines
1.3 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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describe "Hash#rassoc" do
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before :each do
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@h = {apple: :green, orange: :orange, grape: :green, banana: :yellow}
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end
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it "returns an Array if the argument is a value of the Hash" do
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@h.rassoc(:green).should be_an_instance_of(Array)
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end
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it "returns a 2-element Array if the argument is a value of the Hash" do
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@h.rassoc(:orange).size.should == 2
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end
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it "sets the first element of the Array to the key of the located value" do
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@h.rassoc(:yellow).first.should == :banana
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end
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it "sets the last element of the Array to the located value" do
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@h.rassoc(:yellow).last.should == :yellow
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end
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it "only returns the first matching key-value pair" do
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@h.rassoc(:green).should == [:apple, :green]
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end
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it "uses #== to compare the argument to the values" do
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@h[:key] = 1.0
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1.should == 1.0
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@h.rassoc(1).should eql [:key, 1.0]
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end
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it "returns nil if the argument is not a value of the Hash" do
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@h.rassoc(:banana).should be_nil
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end
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it "returns nil if the argument is not a value of the Hash even when there is a default" do
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Hash.new(42).merge!( foo: :bar ).rassoc(42).should be_nil
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Hash.new{|h, k| h[k] = 42}.merge!( foo: :bar ).rassoc(42).should be_nil
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end
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end
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