Make integration tests a bit cleaner.

utils/tests/pub/install/git/lock_version_test.dart

Index: utils/tests/pub/install/git/lock_version_test.dart
diff --git a/utils/tests/pub/install/git/lock_version_test.dart b/utils/tests/pub/install/git/lock_version_test.dart
index ced05d7f8e63e5d967c28afe5ac90cffecb9282e..793294c589e97f6fa97148bc88e86140036e1588 100644
--- a/utils/tests/pub/install/git/lock_version_test.dart
+++ b/utils/tests/pub/install/git/lock_version_test.dart
@@ -7,10 +7,9 @@ library pub_tests;
 import 'dart:io';
 
 import '../../test_pub.dart';
-import '../../../../../pkg/unittest/lib/unittest.dart';
 
 main() {
-  test('keeps a Git package locked to the version in the lockfile', () {
+  integration('keeps a Git package locked to the version in the lockfile', () {
     ensureGit();
 
     git('foo.git', [
@@ -47,7 +46,5 @@ main() {
         file('foo.dart', 'main() => "foo";')
       ])
     ]).scheduleValidate();
-
-    run();
   });
 }