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Diffstat (limited to 'spec/ruby/shared/rational/divide.rb')
-rw-r--r-- | spec/ruby/shared/rational/divide.rb | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/spec/ruby/shared/rational/divide.rb b/spec/ruby/shared/rational/divide.rb new file mode 100644 index 0000000000..8c5bf666e6 --- /dev/null +++ b/spec/ruby/shared/rational/divide.rb @@ -0,0 +1,71 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe :rational_divide_rat, shared: true do + it "returns self divided by other as a Rational" do + Rational(3, 4).send(@method, Rational(3, 4)).should eql(Rational(1, 1)) + Rational(2, 4).send(@method, Rational(1, 4)).should eql(Rational(2, 1)) + + Rational(2, 4).send(@method, 2).should == Rational(1, 4) + Rational(6, 7).send(@method, -2).should == Rational(-3, 7) + end + + it "raises a ZeroDivisionError when passed a Rational with a numerator of 0" do + lambda { Rational(3, 4).send(@method, Rational(0, 1)) }.should raise_error(ZeroDivisionError) + end +end + +describe :rational_divide_int, shared: true do + it "returns self divided by other as a Rational" do + Rational(3, 4).send(@method, 2).should eql(Rational(3, 8)) + Rational(2, 4).send(@method, 2).should eql(Rational(1, 4)) + Rational(6, 7).send(@method, -2).should eql(Rational(-3, 7)) + end + + it "raises a ZeroDivisionError when passed 0" do + lambda { Rational(3, 4).send(@method, 0) }.should raise_error(ZeroDivisionError) + end +end + +describe :rational_divide_float, shared: true do + it "returns self divided by other as a Float" do + Rational(3, 4).send(@method, 0.75).should eql(1.0) + Rational(3, 4).send(@method, 0.25).should eql(3.0) + Rational(3, 4).send(@method, 0.3).should eql(2.5) + + Rational(-3, 4).send(@method, 0.3).should eql(-2.5) + Rational(3, -4).send(@method, 0.3).should eql(-2.5) + Rational(3, 4).send(@method, -0.3).should eql(-2.5) + end + + it "returns infinity when passed 0" do + Rational(3, 4).send(@method, 0.0).infinite?.should eql(1) + Rational(-3, -4).send(@method, 0.0).infinite?.should eql(1) + + Rational(-3, 4).send(@method, 0.0).infinite?.should eql(-1) + Rational(3, -4).send(@method, 0.0).infinite?.should eql(-1) + end +end + +describe :rational_divide, shared: true do + it "calls #coerce on the passed argument with self" do + rational = Rational(3, 4) + obj = mock("Object") + obj.should_receive(:coerce).with(rational).and_return([1, 2]) + + rational.send(@method, obj) + end + + it "calls #/ on the coerced Rational with the coerced Object" do + rational = Rational(3, 4) + + coerced_rational = mock("Coerced Rational") + coerced_rational.should_receive(:/).and_return(:result) + + coerced_obj = mock("Coerced Object") + + obj = mock("Object") + obj.should_receive(:coerce).and_return([coerced_rational, coerced_obj]) + + rational.send(@method, obj).should == :result + end +end |