require_relative '../../spec_helper' describe "Time#<=>" do it "returns 1 if the first argument is a point in time after the second argument" do (Time.now <=> Time.at(0)).should == 1 end it "returns 1 if the first argument is a point in time after the second argument (down to a millisecond)" do (Time.at(0, 1000) <=> Time.at(0, 0)).should == 1 (Time.at(1202778512, 1000) <=> Time.at(1202778512, 999)).should == 1 end it "returns 1 if the first argument is a point in time after the second argument (down to a microsecond)" do (Time.at(0, 100) <=> Time.at(0, 0)).should == 1 (Time.at(1202778512, 100) <=> Time.at(1202778512, 99)).should == 1 end it "returns 0 if time is the same as other" do (Time.at(1202778513) <=> Time.at(1202778513)).should == 0 (Time.at(100, 100) <=> Time.at(100, 100)).should == 0 end it "returns -1 if the first argument is a point in time before the second argument" do (Time.at(0) <=> Time.now).should == -1 (Time.at(100, 100) <=> Time.at(101, 100)).should == -1 end it "returns -1 if the first argument is a point in time before the second argument (down to a millisecond)" do (Time.at(0, 0) <=> Time.at(0, 1000)).should == -1 end it "returns -1 if the first argument is a point in time before the second argument (down to a microsecond)" do (Time.at(0, 0) <=> Time.at(0, 100)).should == -1 end it "returns 1 if the first argument is a fraction of a microsecond after the second argument" do (Time.at(100, Rational(1,1000)) <=> Time.at(100, 0)).should == 1 end it "returns 0 if time is the same as other, including fractional microseconds" do (Time.at(100, Rational(1,1000)) <=> Time.at(100, Rational(1,1000))).should == 0 end it "returns -1 if the first argument is a fraction of a microsecond before the second argument" do (Time.at(100, 0) <=> Time.at(100, Rational(1,1000))).should == -1 end it "returns nil when compared to an Integer because Time does not respond to #coerce" do time = Time.at(1) time.respond_to?(:coerce).should == false time.should_receive(:respond_to?).exactly(2).and_return(false) -> { (time <=> 2).should == nil (2 <=> time).should == nil }.should_not complain end describe "given a non-Time argument" do it "returns nil if argument <=> self returns nil" do t = Time.now obj = mock('time') obj.should_receive(:<=>).with(t).and_return(nil) (t <=> obj).should == nil end it "returns -1 if argument <=> self is greater than 0" do t = Time.now r = mock('r') r.should_receive(:>).with(0).and_return(true) obj = mock('time') obj.should_receive(:<=>).with(t).and_return(r) (t <=> obj).should == -1 end it "returns 1 if argument <=> self is not greater than 0 and is less than 0" do t = Time.now r = mock('r') r.should_receive(:>).with(0).and_return(false) r.should_receive(:<).with(0).and_return(true) obj = mock('time') obj.should_receive(:<=>).with(t).and_return(r) (t <=> obj).should == 1 end it "returns 0 if argument <=> self is neither greater than 0 nor less than 0" do t = Time.now r = mock('r') r.should_receive(:>).with(0).and_return(false) r.should_receive(:<).with(0).and_return(false) obj = mock('time') obj.should_receive(:<=>).with(t).and_return(r) (t <=> obj).should == 0 end it "returns nil if argument also uses an inverse comparison for <=>" do t = Time.now r = mock('r') def r.<=>(other); other <=> self; end r.should_receive(:<=>).once (t <=> r).should be_nil end end end