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require_relative '../../shared/rational/to_r'
describe "Rational#to_r" do
it_behaves_like :rational_to_r, :to_r
it "raises TypeError trying to convert BasicObject" do
obj = BasicObject.new
-> { Rational(obj) }.should raise_error(TypeError)
end
it "works when a BasicObject has to_r" do
obj = BasicObject.new; def obj.to_r; 1 / 2.to_r end
Rational(obj).should == Rational('1/2')
end
it "fails when a BasicObject's to_r does not return a Rational" do
obj = BasicObject.new; def obj.to_r; 1 end
-> { Rational(obj) }.should raise_error(TypeError)
end
end
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