When we have excess callbacks, throw instead of calling error() so that we

pkg/unittest/lib/unittest.dart

Index: pkg/unittest/lib/unittest.dart
===================================================================
--- pkg/unittest/lib/unittest.dart	(revision 19168)
+++ pkg/unittest/lib/unittest.dart	(working copy)
@@ -432,11 +432,11 @@
         _after, _testNum);
   }
 
-  /** Returns false if we exceded the number of expected calls. */
+  /** Returns true if we have not exceeded the number of expected calls. */
   bool _checkCallCount() {
     if (_actualCalls > _expectedCalls) {
-      _testCase.error('Callback ${_id}called more times than expected '
-             '($_actualCalls > $_expectedCalls).', '');
+      throw new TestFailure('Callback ${_id}called more times than expected '
+                            '($_actualCalls > $_expectedCalls).');
       return false;

[Jennifer Messerly, 2013/02/27 22:42:55]

remove?

     }
     return true;