Use "package:" imports for pub.

test/utils_test.dart

Index: test/utils_test.dart
diff --git a/test/utils_test.dart b/test/utils_test.dart
index a137d2d079094cfa0ad8429dec33f37955513b1e..423083d689d5bcbd117cf7d00d20046533dc835d 100644
--- a/test/utils_test.dart
+++ b/test/utils_test.dart
@@ -4,9 +4,10 @@
 
 library utils_test;
 
+import 'package:pub/src/utils.dart';
 import 'package:unittest/unittest.dart';
+
 import 'test_pub.dart';
-import '../lib/src/utils.dart';
 
 main() {
   initConfig();