Fix issue with extraneous newline in test result output.

pkg/unittest/lib/src/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.
 
 part of unittest;
 
 // A custom failure handler for [expect] that routes expect failures
 // to the config.
 class _ExpectFailureHandler extends DefaultFailureHandler {
   Configuration _config;
@@ skipping 176 matching lines @@
    * the result summary using the built-in [print] command. Browser tests
    * commonly override this to reformat the output.
    *
    * When [uncaughtError] is not null, it contains an error that occured outside
    * of tests (e.g. setting up the test).
    */
   void onSummary(int passed, int failed, int errors, List<TestCase> results,
       String uncaughtError) {
     // Print each test's result.
     for (final t in results) {
-      print(formatResult(t));
+      print(formatResult(t).trim());
     }
 
     // Show the summary.
     print('');
 
     if (passed == 0 && failed == 0 && errors == 0 && uncaughtError == null) {
       print('No tests found.');
       // This is considered a failure too.
     } else if (failed == 0 && errors == 0 && uncaughtError == null) {
       print('All $passed tests passed.');
@@ skipping 26 matching lines @@
   // Currently e.message works in dartium, but not in dartc.
   void handleExternalError(e, String message, [stack]) =>
       _reportTestError('$message\nCaught $e', stack);
 
   _postMessage(String message) {
     // In dart2js browser tests, the JavaScript-based test controller
     // intercepts calls to print and listens for "secret" messages.
     print(message);
   }
 }