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47 lines
1.5 KiB
Ruby
47 lines
1.5 KiB
Ruby
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require File.expand_path('../../../spec_helper', __FILE__)
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require File.expand_path('../fixtures/classes', __FILE__)
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describe "Comparable#<=" do
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it "calls #<=> on self with other and returns true if #<=> returns 0 or any Integer less than 0" do
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a = ComparableSpecs::Weird.new(0)
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b = ComparableSpecs::Weird.new(20)
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a.should_receive(:<=>).any_number_of_times.and_return(0)
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(a <= b).should == true
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a.should_receive(:<=>).any_number_of_times.and_return(0.0)
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(a <= b).should == true
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a.should_receive(:<=>).any_number_of_times.and_return(-1)
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(a <= b).should == true
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a.should_receive(:<=>).any_number_of_times.and_return(-0.1)
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(a <= b).should == true
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a.should_receive(:<=>).any_number_of_times.and_return(-10000000)
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(a <= b).should == true
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end
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it "returns false if calling #<=> on self returns any Integer greater than 0" do
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a = ComparableSpecs::Weird.new(0)
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b = ComparableSpecs::Weird.new(10)
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a.should_receive(:<=>).any_number_of_times.and_return(0.1)
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(a <= b).should == false
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a.should_receive(:<=>).any_number_of_times.and_return(1.0)
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(a <= b).should == false
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a.should_receive(:<=>).any_number_of_times.and_return(10000000)
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(a <= b).should == false
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end
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it "raises an ArgumentError if calling #<=> on self returns nil" do
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a = ComparableSpecs::Weird.new(0)
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b = ComparableSpecs::Weird.new(20)
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a.should_receive(:<=>).any_number_of_times.and_return(nil)
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lambda { (a <= b) }.should raise_error(ArgumentError)
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end
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end
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