add core/fixnum/== spec

test/test-android/app/core/fixnum/equal_value_spec.rb

@@ -0,0 +1,34 @@
+class Core_Fixnum_EqualValue_Mock1 < Java::Lang::Object
+  def ==(obj)
+    false
+  end
+end
+
+class Core_Fixnum_EqualValue_Mock2 < Java::Lang::Object
+  def ==(obj)
+    true
+  end
+end
+
+describe "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#==, Bignum#== 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 a Fixnum" do
+    (1 == '*').should == false
+
+    obj = Core_Fixnum_EqualValue_Mock1.new
+    1.should_not == obj
+
+    obj = Core_Fixnum_EqualValue_Mock2.new
+    2.should == obj
+  end
+end