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95 lines
3.3 KiB
Ruby
95 lines
3.3 KiB
Ruby
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require File.expand_path('../../../spec_helper', __FILE__)
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describe "Time#<=>" do
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it "returns 1 if the first argument is a point in time after the second argument" do
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(Time.now <=> Time.at(0)).should == 1
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end
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it "returns 1 if the first argument is a point in time after the second argument (down to a millisecond)" do
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(Time.at(0, 1000) <=> Time.at(0, 0)).should == 1
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(Time.at(1202778512, 1000) <=> Time.at(1202778512, 999)).should == 1
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end
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it "returns 1 if the first argument is a point in time after the second argument (down to a microsecond)" do
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(Time.at(0, 100) <=> Time.at(0, 0)).should == 1
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(Time.at(1202778512, 100) <=> Time.at(1202778512, 99)).should == 1
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end
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it "returns 0 if time is the same as other" do
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(Time.at(1202778513) <=> Time.at(1202778513)).should == 0
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(Time.at(100, 100) <=> Time.at(100, 100)).should == 0
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end
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it "returns -1 if the first argument is a point in time before the second argument" do
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(Time.at(0) <=> Time.now).should == -1
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(Time.at(100, 100) <=> Time.at(101, 100)).should == -1
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end
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it "returns -1 if the first argument is a point in time before the second argument (down to a millisecond)" do
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(Time.at(0, 0) <=> Time.at(0, 1000)).should == -1
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end
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it "returns -1 if the first argument is a point in time before the second argument (down to a microsecond)" do
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(Time.at(0, 0) <=> Time.at(0, 100)).should == -1
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end
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it "returns 1 if the first argument is a fraction of a microsecond after the second argument" do
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(Time.at(100, Rational(1,1000)) <=> Time.at(100, 0)).should == 1
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end
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it "returns 0 if time is the same as other, including fractional microseconds" do
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(Time.at(100, Rational(1,1000)) <=> Time.at(100, Rational(1,1000))).should == 0
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end
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it "returns -1 if the first argument is a fraction of a microsecond before the second argument" do
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(Time.at(100, 0) <=> Time.at(100, Rational(1,1000))).should == -1
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end
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describe "given a non-Time argument" do
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it "returns nil if argument <=> self returns nil" do
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t = Time.now
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obj = mock('time')
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obj.should_receive(:<=>).with(t).and_return(nil)
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(t <=> obj).should == nil
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end
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it "returns -1 if argument <=> self is greater than 0" do
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t = Time.now
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r = mock('r')
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r.should_receive(:>).with(0).and_return(true)
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obj = mock('time')
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obj.should_receive(:<=>).with(t).and_return(r)
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(t <=> obj).should == -1
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end
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it "returns 1 if argument <=> self is not greater than 0 and is less than 0" do
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t = Time.now
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r = mock('r')
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r.should_receive(:>).with(0).and_return(false)
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r.should_receive(:<).with(0).and_return(true)
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obj = mock('time')
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obj.should_receive(:<=>).with(t).and_return(r)
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(t <=> obj).should == 1
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end
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it "returns 0 if argument <=> self is neither greater than 0 nor less than 0" do
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t = Time.now
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r = mock('r')
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r.should_receive(:>).with(0).and_return(false)
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r.should_receive(:<).with(0).and_return(false)
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obj = mock('time')
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obj.should_receive(:<=>).with(t).and_return(r)
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(t <=> obj).should == 0
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end
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it "returns nil if argument also uses an inverse comparison for <=>" do
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t = Time.now
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r = mock('r')
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def r.<=>(other); other <=> self; end
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r.should_receive(:<=>).once
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(t <=> r).should be_nil
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end
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end
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end
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