adds file path source to pub

utils/tests/pub/install/path/path_is_file_test.dart

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library pub_tests;
 
 import 'dart:io';
 
 import '../../test_pub.dart';
 
 main() {
-  integration('fails gracefully if the url does not resolve', () {
+
+  integration('path dependency when path is relative', () {
+
+    dir('foo', [
+      libDir('foo'),
+      libPubspec('foo', '0.0.1')
+    ]).scheduleCreate();
+
     dir(appPath, [
       pubspec({
         "name": "myapp",
         "dependencies": {
-          "foo": {
-            "hosted": {
-              "name": "foo",
-              "url": "http://pub.invalid"
-            }
-          }
-         }
+          "foo": {"path": "../foo/pubspec.yaml"}
+        }
       })
     ]).scheduleCreate();
-
+    
     schedulePub(args: ['install'],
-        error: new RegExp('Could not resolve URL "http://pub.invalid".'),
-        exitCode: 1);
+        error: new RegExp("Package \"foo\" doesn't have a pubspec.yaml file."),
+        exitCode:1);
   });
 }