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42 lines
834 B
Ruby
42 lines
834 B
Ruby
describe "The unless expression" do
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it "evaluates the unless body when the expression is false" do
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unless false
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a = true
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else
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a = false
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end
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a.should == true
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end
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it "returns the last statement in the body" do
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unless false
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'foo'
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'bar'
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'baz'
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end.should == 'baz'
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end
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it "evaluates the else body when the expression is true" do
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unless true
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'foo'
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else
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'bar'
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end.should == 'bar'
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end
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it "takes an optional then after the expression" do
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unless false then
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'baz'
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end.should == 'baz'
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end
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it "does not return a value when the expression is true" do
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unless true; end.should == nil
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end
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it "allows expression and body to be on one line (using 'then')" do
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unless false then 'foo'; else 'bar'; end.should == 'foo'
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end
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end
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