Fix break in checked mode.

pkg/unittest/lib/src/core_matchers.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.
 
 part of matcher;
 
 /**
  * Returns a matcher that matches empty strings, maps or iterables
  * (including collections).
  */
@@ skipping 162 matching lines @@
         }
       } else {
         reason = new StringDescription();
         var includeTypes = expected.runtimeType != actual.runtimeType;
         // If we have recursed, show the expected value too; if not,
         // expect() will show it for us. As expect will not show type
         // mismatches at the top level we handle those here too.
         if (includeTypes || depth > 1) {
           reason.add('expected ');
           if (includeTypes) {
-            reason..add(expected.runtimeType).add(':');
+            reason.add(expected.runtimeType.toString()).add(':');
           }
           reason.addDescriptionOf(expected).add(' but ');
         }
         reason.add('was ');
         if (includeTypes) {
-          reason..add(actual.runtimeType).add(':');
+          reason..add(actual.runtimeType.toString()).add(':');

[Siggi Cherem (dart-lang), 2013/02/12 21:23:52]

.. to .? or change the one in 183 to be .. as well?

[gram, 2013/02/12 21:25:41]

Done.

         }
         reason.addDescriptionOf(actual);
       }
     }
     if (reason != null && location.length > 0) {
       reason.add(' ').add(location);
     }
     return reason;
   }
 
@@ skipping 522 matching lines @@
       description.add(_featureDescription).add(' ').addDescriptionOf(_matcher);
 
   Description describeMismatch(item, Description mismatchDescription,
                                MatchState matchState, bool verbose) {
     mismatchDescription.add(_featureName).add(' ');
     _matcher.describeMismatch(matchState.state['feature'], mismatchDescription,
         matchState.state['innerState'], verbose);
     return mismatchDescription;
   }
 }