Handle parsing the "version" file better.

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 '../../../pkg/unittest/lib/unittest.dart';
@@ skipping 105 matching lines @@
       schedulePub(args: ['help', 'quylthulg'],
           error: '''
             Could not find a command named "quylthulg".
             Run "pub help" to see available commands.
             ''',
             exitCode: 64);
     });
 
   });
 
-  integration('displays the current version', () {
-    dir(sdkPath, [
-      file('version', '0.1.2.3'),
-    ]).scheduleCreate();
+  group('version', () {
+    integration('displays the current version', () {
+      dir(sdkPath, [
+        file('version', '0.1.2.3'),
+      ]).scheduleCreate();
 
-    schedulePub(args: ['version'], output: VERSION_STRING);
+      schedulePub(args: ['version'], output: VERSION_STRING);
+    });
+
+    integration('parses a release-style version', () {
+      dir(sdkPath, [
+        file('version', '0.1.2.0_r17645'),
+      ]).scheduleCreate();
+
+      schedulePub(args: ['version'], output: "Pub 0.1.2+0.r17645\n");
+    });
+
+    integration('parses a dev-only style version', () {
+      // The "version" file generated on developer builds is a little funky and
+      // we need to make sure we don't choke on it.
+      dir(sdkPath, [
+        file('version', '0.1.2.0_r16279_bobross'),
+      ]).scheduleCreate();
+
+      schedulePub(args: ['version'], output: "Pub 0.1.2+0.r16279.bobross\n");
+    });
   });
 }