Added the ability to tun off logging for individual behaviors.

tests/lib/unittest/mock_stepwise_negative_test.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.
+
+#library('unittestTest');
+#import('../../../lib/unittest/unittest.dart');
+
+main() {
+  test('Mocking: stepwiseValidate', () {
+    LogEntryList logList = new LogEntryList('test');
+    for (var i = 0; i < 10; i++) {
+      LogEntry e = new LogEntry(null, 'foo', [ i ], Action.IGNORE);
+      logList.add(e);
+    }
+    int total = 0;
+    logList.stepwiseValidate((l, pos) {

[Siggi Cherem (dart-lang), 2012/08/07 23:58:47]

l => logs? 
(l (letter L) is easily confused in 1 (number one))

+        return 0;
+    });
+  });
+}