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401b64c4e8
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62656 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
62 lines
1.9 KiB
Ruby
62 lines
1.9 KiB
Ruby
require_relative '../../spec_helper'
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describe :rational_multiply_rat, shared: true do
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it "returns self divided by other as a Rational" do
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(Rational(3, 4) * Rational(3, 4)).should eql(Rational(9, 16))
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(Rational(2, 4) * Rational(1, 4)).should eql(Rational(1, 8))
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(Rational(3, 4) * Rational(0, 1)).should eql(Rational(0, 4))
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end
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end
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describe :rational_multiply_int, shared: true do
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it "returns self divided by other as a Rational" do
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(Rational(3, 4) * 2).should eql(Rational(3, 2))
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(Rational(2, 4) * 2).should eql(Rational(1, 1))
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(Rational(6, 7) * -2).should eql(Rational(-12, 7))
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(Rational(3, 4) * 0).should eql(Rational(0, 4))
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end
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end
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describe :rational_multiply_float, shared: true do
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it "returns self divided by other as a Float" do
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(Rational(3, 4) * 0.75).should eql(0.5625)
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(Rational(3, 4) * 0.25).should eql(0.1875)
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(Rational(3, 4) * 0.3).should be_close(0.225, TOLERANCE)
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(Rational(-3, 4) * 0.3).should be_close(-0.225, TOLERANCE)
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(Rational(3, -4) * 0.3).should be_close(-0.225, TOLERANCE)
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(Rational(3, 4) * -0.3).should be_close(-0.225, TOLERANCE)
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(Rational(3, 4) * 0.0).should eql(0.0)
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(Rational(-3, -4) * 0.0).should eql(0.0)
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(Rational(-3, 4) * 0.0).should eql(0.0)
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(Rational(3, -4) * 0.0).should eql(0.0)
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end
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end
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describe :rational_multiply, shared: true do
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it "calls #coerce on the passed argument with self" do
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rational = Rational(3, 4)
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obj = mock("Object")
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obj.should_receive(:coerce).with(rational).and_return([1, 2])
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rational * obj
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end
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it "calls #* on the coerced Rational with the coerced Object" do
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rational = Rational(3, 4)
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coerced_rational = mock("Coerced Rational")
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coerced_rational.should_receive(:*).and_return(:result)
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coerced_obj = mock("Coerced Object")
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obj = mock("Object")
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obj.should_receive(:coerce).and_return([coerced_rational, coerced_obj])
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(rational * obj).should == :result
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end
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end
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