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* For easier modifications of ruby/spec by MRI developers. * .gitignore: track changes under spec. * spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec. These files can therefore be updated like any other file in MRI. Instructions are provided in spec/README. [Feature #13156] [ruby-core:79246] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
51 lines
1.1 KiB
Ruby
51 lines
1.1 KiB
Ruby
require File.expand_path('../../spec_helper', __FILE__)
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describe "The not keyword" do
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it "negates a `true' value" do
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(not true).should be_false
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(not 'true').should be_false
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end
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it "negates a `false' value" do
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(not false).should be_true
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(not nil).should be_true
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end
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it "accepts an argument" do
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not(true).should be_false
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end
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it "returns false if the argument is true" do
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(not(true)).should be_false
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end
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it "returns true if the argument is false" do
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(not(false)).should be_true
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end
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it "returns true if the argument is nil" do
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(not(nil)).should be_true
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end
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end
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describe "The `!' keyword" do
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it "negates a `true' value" do
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(!true).should be_false
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(!'true').should be_false
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end
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it "negates a `false' value" do
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(!false).should be_true
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(!nil).should be_true
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end
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it "doubled turns a truthful object into `true'" do
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(!!true).should be_true
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(!!'true').should be_true
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end
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it "doubled turns a not truthful object into `false'" do
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(!!false).should be_false
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(!!nil).should be_false
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end
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end
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