Added support for layout render tests. These use expected values for the text render output from Du…

pkg/unittest/config.dart

 // Copyright (c) 2011, 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.
 
 /** This file is sourced by unitest.dart. */
 
 /**
  * Hooks to configure the unittest library for different platforms. This class
  * implements the API in a platform-independent way. Tests that want to take
  * advantage of the platform can create a subclass and override methods from
@@ skipping 36 matching lines @@
    */
   void onTestResult(TestCase testCase) {
     currentTestCase = null;
   }
 
   /**
    * Can be called by tests to log status. Tests should use this
    * instead of print. Subclasses should not override this; they
    * should instead override logMessage which is passed the test case.
    */
-  void log(String message) {
+  void trace(String message) {

[Siggi Cherem (dart-lang), 2012/09/05 17:45:41]

I think I prefer the old name.

[gram, 2012/09/06 18:25:25]

As discussed, changed logMessage to logTestCaseMessage, and trace to logMessage.

     if (currentTestCase == null || _currentTest >= _tests.length ||
         currentTestCase.id != _tests[_currentTest].id) {
       // Before or after tests run, or with a mismatch between what the
       // config and the test harness think is the current test. In this
       // case we pass null for the test case reference and let the config
       // decide what to do with this.
       logMessage(null, message);
     } else {
       logMessage(currentTestCase, message);
     }
@@ skipping 57 matching lines @@
 
     return Strings.join(str.split("\n").map((line) => "  $line"), "\n");
   }
 
   /** Handle errors that happen outside the tests. */
   // TODO(vsm): figure out how to expose the stack trace here
   // Currently e.message works in dartium, but not in dartc.
   handleExternalError(e, String message) =>
       _reportTestError('$message\nCaught $e', '');
 }