Add tests for operator == with int RHS.
diff --git a/test/int32_test.dart b/test/int32_test.dart
index c6571d1..4571bbd 100644
--- a/test/int32_test.dart
+++ b/test/int32_test.dart
@@ -186,6 +186,9 @@
       expect(new Int32(17) == new Int64(17), true);
       expect(new Int32(17) == new Int64(16), false);
       expect(Int32.MIN_VALUE == Int32.MAX_VALUE, false);
+      expect(new Int32(17) == 18, false);
+      expect(new Int32(17) == 17, true);
+      expect(new Int32(17) == 16, false);
       expect(new Int32(17) == new Object(), false);
       expect(new Int32(17) == null, false);
     });