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describe "Complex#rationalize" do
it "raises RangeError if self has non-zero imaginary part" do
lambda { Complex(1,5).rationalize }.should raise_error(RangeError)
end
it "raises RangeError if self has 0.0 imaginary part" do
lambda { Complex(1,0.0).rationalize }.should raise_error(RangeError)
end
it "returns a Rational if self has zero imaginary part" do
Complex(1,0).rationalize.should == Rational(1,1)
Complex(2<<63+5).rationalize.should == Rational(2<<63+5,1)
end
it "sends #rationalize to the real part" do
real = mock_numeric('real')
real.should_receive(:rationalize).with(0.1).and_return(:result)
Complex(real, 0).rationalize(0.1).should == :result
end
it "ignores a single argument" do
Complex(1,0).rationalize(0.1).should == Rational(1,1)
end
it "raises ArgumentError when passed more than one argument" do
lambda { Complex(1,0).rationalize(0.1, 0.1) }.should raise_error(ArgumentError)
lambda { Complex(1,0).rationalize(0.1, 0.1, 2) }.should raise_error(ArgumentError)
end
end
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