pkg/unittest: test cleanup

pkg/unittest/test/invalid_ops_test.dart

Index: pkg/unittest/test/invalid_ops_test.dart
diff --git a/pkg/unittest/test/unittest_invalid_ops_test.dart b/pkg/unittest/test/invalid_ops_test.dart
similarity index 96%
rename from pkg/unittest/test/unittest_invalid_ops_test.dart
rename to pkg/unittest/test/invalid_ops_test.dart
index 4f1091c003fee2454cbfead5beeaa2330af8d6ca..a1c5190c1bf1c9093b5d9a2101eaec9d6100adbe 100644
--- a/pkg/unittest/test/unittest_invalid_ops_test.dart
+++ b/pkg/unittest/test/invalid_ops_test.dart
@@ -3,11 +3,13 @@
 // BSD-style license that can be found in the LICENSE file.
 
 library unittestTest;
-import 'dart:isolate';
+
 import 'dart:async';
+import 'dart:isolate';
+
 import 'package:unittest/unittest.dart';
 
-part 'unittest_test_utils.dart';
+part 'utils.dart';
 
 var testName = 'invalid ops throw while test is running';