1 files changed, 61 insertions, 2 deletions
diff --git a/spec/ruby/core/integer/equal_value_spec.rb b/spec/ruby/core/integer/equal_value_spec.rb
index 67a73713af..dc73552267 100644
--- a/spec/ruby/core/integer/equal_value_spec.rb
+++ b/spec/ruby/core/integer/equal_value_spec.rb
@@ -1,6 +1,65 @@
 require_relative '../../spec_helper'
-require_relative 'shared/equal'
 
 describe "Integer#==" do
-  it_behaves_like :integer_equal, :==
+  context "fixnum" do
+    it "returns true if self has the same value as other" do
+      (1 == 1).should == true
+      (9 == 5).should == false
+
+      # Actually, these call Float#==, Integer#== etc.
+      (9 == 9.0).should == true
+      (9 == 9.01).should == false
+
+      (10 == bignum_value).should == false
+    end
+
+    it "calls 'other == self' if the given argument is not an Integer" do
+      (1 == '*').should == false
+
+      obj = mock('one other')
+      obj.should_receive(:==).any_number_of_times.and_return(false)
+      (1 == obj).should == false
+
+      obj = mock('another')
+      obj.should_receive(:==).any_number_of_times.and_return(true)
+      (2 == obj).should == true
+    end
+  end
+
+  context "bignum" do
+    before :each do
+      @bignum = bignum_value
+    end
+
+    it "returns true if self has the same value as the given argument" do
+      (@bignum == @bignum).should == true
+      (@bignum == @bignum.to_f).should == true
+
+      (@bignum == @bignum + 1).should == false
+      ((@bignum + 1) == @bignum).should == false
+
+      (@bignum == 9).should == false
+      (@bignum == 9.01).should == false
+
+      (@bignum == bignum_value(10)).should == false
+    end
+
+    it "calls 'other == self' if the given argument is not an Integer" do
+      obj = mock('not integer')
+      obj.should_receive(:==).and_return(true)
+      (@bignum == obj).should == true
+    end
+
+    it "returns the result of 'other == self' as a boolean" do
+      obj = mock('not integer')
+      obj.should_receive(:==).exactly(2).times.and_return("woot", nil)
+      (@bignum == obj).should == true
+      (@bignum == obj).should == false
+    end
+
+    it "does not lose precision when comparing with a Float" do
+      ((bignum_value(1) == bignum_value.to_f)).should == false
+      ((bignum_value == bignum_value.to_f)).should == true
+    end
+  end
 end