Get codebase ready for actually supporting versioning.

utils/tests/pub/pub_test.dart

 // Copyright (c) 2012, 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');
 #import('../../../lib/unittest/unittest.dart');
@@ skipping 42 matching lines @@
           exitCode: 64);
     });
   });
 
   group('pub list', listCommand);
   group('pub install', installCommand);
   group('pub version', versionCommand);
 }
 
 listCommand() {
+  // TODO(rnystrom): We don't currently have any sources that are cached, so
+  // we can't test this right now.
+  /*
   group('cache', () {
     test('treats an empty directory as a package', () {
       dir(cachePath, [
         dir('sdk', [
           dir('apple'),
           dir('banana'),
           dir('cherry')
         ])
       ]).scheduleCreate();
 
       runPub(args: ['list', 'cache'],
           output: '''
           From system cache:
-            apple from sdk
-            banana from sdk
-            cherry from sdk
+            apple 0.0.0 (apple from sdk)
+            banana 0.0.0 (banana from sdk)
+            cherry 0.0.0 (cherry from sdk)
           ''');
     });
   });
+  */
 }
 
 installCommand() {
   test('adds a dependent package', () {
     dir(sdkPath, [
       dir('lib', [
         dir('foo', [
           file('foo.dart', 'main() => "foo";')
         ])
       ])
@@ skipping 103 matching lines @@
 
     runPub(args: ['install'],
         output: const RegExp("Dependencies installed!\$"));
   });
 }
 
 versionCommand() {
   test('displays the current version', () =>
     runPub(args: ['version'], output: VERSION_STRING));
 }