32 lines
767 B
Ruby
32 lines
767 B
Ruby
require_relative '../../spec_helper'
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describe "Kernel#<=>" do
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it "returns 0 if self" do
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obj = Object.new
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obj.<=>(obj).should == 0
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end
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it "returns 0 if self is == to the argument" do
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obj = mock('has ==')
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obj.should_receive(:==).and_return(true)
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obj.<=>(Object.new).should == 0
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end
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it "returns nil if self is eql? but not == to the argument" do
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obj = mock('has eql?')
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obj.should_not_receive(:eql?)
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obj.<=>(Object.new).should be_nil
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end
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it "returns nil if self.==(arg) returns nil" do
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obj = mock('wrong ==')
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obj.should_receive(:==).and_return(nil)
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obj.<=>(Object.new).should be_nil
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end
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it "returns nil if self is not == to the argument" do
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obj = Object.new
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obj.<=>(3.14).should be_nil
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end
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end
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