Add tests for Int32.parseInt.
diff --git a/test/int32_test.dart b/test/int32_test.dart
index 2d27e71..7d48371 100644
--- a/test/int32_test.dart
+++ b/test/int32_test.dart
@@ -379,6 +379,12 @@
       check('deadbeef', 16, '-559038737');
       check('95', 12, '113');
     });
+
+    test("parseInt", () {
+      expect(Int32.parseInt('0'), new Int32(0));
+      expect(Int32.parseInt('1000'), new Int32(1000));
+      expect(Int32.parseInt('4294967296'), new Int32(4294967296));
+    });
   });
 
   group("string representation", () {