Add flag to disable capturing stack traces.

utils/tests/pub/test_pub.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.
 
 /// Test infrastructure for testing pub. Unlike typical unit tests, most pub
 /// tests are integration tests that stage some stuff on the file system, run
 /// pub, and then validate the results. This library provides an API to build
 /// tests like that.
 library test_pub;
 
@@ skipping 29 matching lines @@
 import '../../pub/validator.dart';
 import 'command_line_config.dart';
 import 'descriptor.dart' as d;
 
 /// This should be called at the top of a test file to set up an appropriate
 /// test configuration for the machine running the tests.
 initConfig() {
   // If we aren't running on the bots, use the human-friendly config.
   if (!runningOnBuildbot) {
     unittestConfiguration = new CommandLineConfiguration();
+
+    // By default, don't capture stack traces since they slow the tests way
+    // down. To debug failing tests, comment this out.
+    captureStackTraces = false;

[nweiz, 2013/04/09 21:25:58]

I'd rather put this in [integration], especially once captureStackTraces is a
property on Schedule.

Also, please make this configurable via the command line somehow. Maybe an
environment variable?

[Bob Nystrom, 2013/04/10 22:40:34]

Done.
Done. Add "--trace" to the command line.

   }
 }
 
 /// Returns whether we're running on a Dart build bot.
 bool get runningOnBuildbot =>
   Platform.environment.containsKey('BUILDBOT_BUILDERNAME');
 
 /// The current [HttpServer] created using [serve].
 var _server;
 
@@ skipping 545 matching lines @@
   bool matches(item, MatchState matchState) {
     if (item is! Pair) return false;
     return _firstMatcher.matches(item.first, matchState) &&
         _lastMatcher.matches(item.last, matchState);
   }
 
   Description describe(Description description) {
     description.addAll("(", ", ", ")", [_firstMatcher, _lastMatcher]);
   }
 }