Support configuring timeouts per-test and -group.

test/runner/runner_test.dart

 // Copyright (c) 2015, 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.
 
 @TestOn("vm")
 
 import 'dart:io';
 import 'dart:math' as math;
 
 import 'package:path/path.dart' as p;
@@ skipping 228 matching lines @@
         contains('nonexistent.dart: load error'),
         contains('Failed to load "nonexistent.dart": Does not exist.')
       ]));
     });
 
     // TODO(nweiz): test what happens when a test file is unreadable once issue
     // 15078 is fixed.
   });
 
   group("runs successful tests", () {
     test("defined in a single file", () {

[kevmoo, 2015/04/15 02:51:34]

This test now fails for me

test/runner/runner_test.dart: runs successful tests defined in a single file

[nweiz, 2015/04/15 20:03:47]

That's probably because I left in the 0-length timeout :p.

       new File(p.join(_sandbox, "test.dart")).writeAsStringSync(_success);
       var result = _runUnittest(["test.dart"]);
       expect(result.exitCode, equals(0));
-    });
+    }, timeout: new Timeout(new Duration(seconds: 0)));
 
     test("defined in a directory", () {
       for (var i = 0; i < 3; i++) {
         new File(p.join(_sandbox, "${i}_test.dart"))
             .writeAsStringSync(_success);
       }
 
       var result = _runUnittest(["."]);
       expect(result.exitCode, equals(0));
     });
@@ skipping 175 matching lines @@
       });
     });
   });
 }
 
 ProcessResult _runUnittest(List<String> args) =>
     runUnittest(args, workingDirectory: _sandbox);
 
 ProcessResult _runDart(List<String> args) =>
     runDart(args, workingDirectory: _sandbox);