add cache list command to pub

utils/tests/pub/pub_cache_test.dart

Index: utils/tests/pub/pub_cache_test.dart
===================================================================
--- utils/tests/pub/pub_cache_test.dart	(revision 0)
+++ utils/tests/pub/pub_cache_test.dart	(revision 0)
@@ -0,0 +1,45 @@
+// 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_cache_test;
+
+import 'dart:io';
+import 'dart:json' as json;
+import 'test_pub.dart';
+import '../../pub/io.dart';
+
+
+main() {
+  initConfig();
+  
+  integration('running pub cache list', () {
+    

[Bob Nystrom, 2013/03/12 22:12:03]

Remove this empty line.

[keertip, 2013/03/13 15:55:00]

Done.

+    servePackages([package("foo", "1.2.3")]);

[Bob Nystrom, 2013/03/12 22:12:03]

Since you're actually creating the cache, you can simplify this a bunch. Remove
this line...

[keertip, 2013/03/13 15:55:00]

Done.

[keertip, 2013/03/13 15:55:00]

Done.

+    
+    // Set up a cache.
+    dir(cachePath, [
+      dir('hosted', [
+        async(port.then((p) => dir('pub.dartlang.org', [

[Bob Nystrom, 2013/03/12 22:12:03]

...and async(port.then((p) =>

(since you don't use p)

[keertip, 2013/03/13 15:55:00]

Done.

+          dir("foo-1.2.3", [
+            libPubspec("foo", "1.2.3"),
+            libDir("foo")
+          ])

[Bob Nystrom, 2013/03/12 22:12:03]

Let's add another package here too to make sure it lists them all.

[keertip, 2013/03/13 15:55:00]

Done.

+        ])))
+      ])
+    ]).scheduleCreate();
+  
+    
+    appDir([dependency("foo", "1.2.3")]).scheduleCreate();

[Bob Nystrom, 2013/03/12 22:12:03]

...and this...

[keertip, 2013/03/13 15:55:00]

Done.

[keertip, 2013/03/13 15:55:00]

Done.

+
+    schedulePub(args: ['install'],
+        output: new RegExp("Dependencies installed!\$"));

[Bob Nystrom, 2013/03/12 22:12:03]

..and this...

[keertip, 2013/03/13 15:55:00]

Done.

+
+    cacheDir({"foo": "1.2.3"}).scheduleValidate();

[Bob Nystrom, 2013/03/12 22:12:03]

..and this...

[Bob Nystrom, 2013/03/12 22:12:03]

...and this...

[keertip, 2013/03/13 15:55:00]

Done.

[keertip, 2013/03/13 15:55:00]

Done.

[keertip, 2013/03/13 15:55:00]

Done.

+    
+    schedulePub(args: ['cache', 'list'], output: 
+      new RegExp(r'{"pubcache":{"foo":{"version":"1.2.3","location":"[^"]+foo-1.2.3"}}}$'));

[Bob Nystrom, 2013/03/12 22:12:03]

Instead of a RegExp, it's probably simpler here to just validate against a
string literal:

output: '{"pubcache...\n'

[nweiz, 2013/03/12 22:58:48]

I think a RegExp is right... the location can vary. The periods and curly braces
should be escaped, though.

[keertip, 2013/03/13 15:55:00]

Done.

+  });
+  

[Bob Nystrom, 2013/03/12 22:12:03]

Add tests that:

1. It exits with the right error message if you run "pub cache"
2. It exits with the right error message if you run "pub cache foo"
3. It prints an empty map if there are no cached packages.

[keertip, 2013/03/13 15:55:00]

Done.

+}
+