Dynamically load packages for dartdevc tests in test.dart.

tools/testing/dart/utils.dart

 // 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.
 
 import 'dart:async';
 import 'dart:io';
 import 'dart:convert';
 import 'dart:math' as math;
 
 import 'configuration.dart';
 import 'path.dart';
 
 // This is the maximum time we expect stdout/stderr of subprocesses to deliver
 // data after we've got the exitCode.
 const Duration MAX_STDIO_DELAY = const Duration(seconds: 30);
 
 String MAX_STDIO_DELAY_PASSED_MESSAGE =
     """Not waiting for stdout/stderr from subprocess anymore
  ($MAX_STDIO_DELAY passed). Please note that this could be an indicator
  that there is a hanging process which we were unable to kill.""";
 
+/// The names of the packages that are available for use in tests.
+const testPackages = const [
+  "async_helper",
+  "collection",
+  "expect",
+  "js",
+  "matcher",
+  "meta",
+  "path",
+  "stack_trace",
+  "unittest"
+];
+
 class DebugLogger {
   static IOSink _sink;
 
   /**
    * If [path] was null, the DebugLogger will write messages to stdout.
    */
   static void init(Path path, {bool append: false}) {
     if (path != null) {
       var mode = append ? FileMode.APPEND : FileMode.WRITE;
       _sink = new File(path.toNativePath()).openWrite(mode: mode);
@@ skipping 484 matching lines @@
       }
       if (path.length > WINDOWS_SHORTEN_PATH_LIMIT) {
         ++shortNameCounter;
         var pathEnd = path.substring(path.length - WINDOWS_PATH_END_LENGTH);
         path = "short${shortNameCounter}_$pathEnd";
       }
     }
     return path;
   }
 }