1 files changed, 39 insertions, 0 deletions
diff --git a/spec/ruby/core/rational/equal_value_spec.rb b/spec/ruby/core/rational/equal_value_spec.rb
new file mode 100644
index 0000000000..1dd077ea41
--- /dev/null
+++ b/spec/ruby/core/rational/equal_value_spec.rb
@@ -0,0 +1,39 @@
+require_relative "../../spec_helper"
+
+describe "Rational#==" do
+  it "returns the result of calling #== with self on the passed argument" do
+    obj = mock("Object")
+    obj.should_receive(:==).and_return(:result)
+
+    (Rational(3, 4) == obj).should_not == false
+  end
+end
+
+describe "Rational#== when passed a Rational" do
+  it "returns true if self has the same numerator and denominator as the passed argument" do
+    (Rational(3, 4) == Rational(3, 4)).should == true
+    (Rational(-3, -4) == Rational(3, 4)).should == true
+    (Rational(-4, 5) == Rational(4, -5)).should == true
+
+    (Rational(bignum_value, 3) == Rational(bignum_value, 3)).should == true
+    (Rational(-bignum_value, 3) == Rational(bignum_value, -3)).should == true
+  end
+end
+
+describe "Rational#== when passed a Float" do
+  it "converts self to a Float and compares it with the passed argument" do
+    (Rational(3, 4) == 0.75).should == true
+    (Rational(4, 2) == 2.0).should == true
+    (Rational(-4, 2) == -2.0).should == true
+    (Rational(4, -2) == -2.0).should == true
+  end
+end
+
+describe "Rational#== when passed an Integer" do
+  it "returns true if self has the passed argument as numerator and a denominator of 1" do
+    # Rational(x, y) reduces x and y automatically
+    (Rational(4, 2) == 2).should == true
+    (Rational(-4, 2) == -2).should == true
+    (Rational(4, -2) == -2).should == true
+  end
+end