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-rw-r--r--spec/ruby/core/rational/divide_spec.rb67
1 files changed, 61 insertions, 6 deletions
diff --git a/spec/ruby/core/rational/divide_spec.rb b/spec/ruby/core/rational/divide_spec.rb
index d8e3a44dc2..c45d1fca2f 100644
--- a/spec/ruby/core/rational/divide_spec.rb
+++ b/spec/ruby/core/rational/divide_spec.rb
@@ -1,19 +1,74 @@
-require_relative '../../shared/rational/divide'
-require_relative '../../shared/rational/arithmetic_exception_in_coerce'
+require_relative "../../spec_helper"
+require_relative 'shared/arithmetic_exception_in_coerce'
describe "Rational#/" do
- it_behaves_like :rational_divide, :/
+ 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 / 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 / obj).should == :result
+ end
+
it_behaves_like :rational_arithmetic_exception_in_coerce, :/
end
describe "Rational#/ when passed an Integer" do
- it_behaves_like :rational_divide_int, :/
+ it "returns self divided by other as a Rational" do
+ (Rational(3, 4) / 2).should.eql?(Rational(3, 8))
+ (Rational(2, 4) / 2).should.eql?(Rational(1, 4))
+ (Rational(6, 7) / -2).should.eql?(Rational(-3, 7))
+ end
+
+ it "raises a ZeroDivisionError when passed 0" do
+ -> { Rational(3, 4) / 0 }.should.raise(ZeroDivisionError)
+ end
end
describe "Rational#/ when passed a Rational" do
- it_behaves_like :rational_divide_rat, :/
+ it "returns self divided by other as a Rational" do
+ (Rational(3, 4) / Rational(3, 4)).should.eql?(Rational(1, 1))
+ (Rational(2, 4) / Rational(1, 4)).should.eql?(Rational(2, 1))
+
+ (Rational(2, 4) / 2).should == Rational(1, 4)
+ (Rational(6, 7) / -2).should == Rational(-3, 7)
+ end
+
+ it "raises a ZeroDivisionError when passed a Rational with a numerator of 0" do
+ -> { Rational(3, 4) / Rational(0, 1) }.should.raise(ZeroDivisionError)
+ end
end
describe "Rational#/ when passed a Float" do
- it_behaves_like :rational_divide_float, :/
+ it "returns self divided by other as a Float" do
+ (Rational(3, 4) / 0.75).should.eql?(1.0)
+ (Rational(3, 4) / 0.25).should.eql?(3.0)
+ (Rational(3, 4) / 0.3).should.eql?(2.5)
+
+ (Rational(-3, 4) / 0.3).should.eql?(-2.5)
+ (Rational(3, -4) / 0.3).should.eql?(-2.5)
+ (Rational(3, 4) / -0.3).should.eql?(-2.5)
+ end
+
+ it "returns infinity when passed 0" do
+ (Rational(3, 4) / 0.0).infinite?.should.eql?(1)
+ (Rational(-3, -4) / 0.0).infinite?.should.eql?(1)
+
+ (Rational(-3, 4) / 0.0).infinite?.should.eql?(-1)
+ (Rational(3, -4) / 0.0).infinite?.should.eql?(-1)
+ end
end