Improve compact and default configuration

pkg/unittest/lib/compact_vm_config.dart

 // Copyright (c) 2013, 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.
 
 /**
  * A test configuration that generates a compact 1-line progress bar. The bar is
  * updated in-place before and after each test is executed. If all test pass,
  * you should only see a couple lines in the terminal. If a test fails, the
  * failure is shown and the progress bar continues to be updated below it.
  */
@@ skipping 46 matching lines @@
     }
   }
 
   String _indent(String str) {
     return str.split("\n").mappedBy((line) => "  $line").join("\n");
   }
 
   void onSummary(int passed, int failed, int errors, List<TestCase> results,
       String uncaughtError) {
     var success = false;
-    if (passed == 0 && failed == 0 && errors == 0) {
+    if (passed == 0 && failed == 0 && errors == 0 && uncaughtError == null) {
       print('\nNo tests ran.');
     } else if (failed == 0 && errors == 0 && uncaughtError == null) {
       _progressLine(_start, _pass, _fail, 'All tests pass', _GREEN);
       print('\nAll $passed tests passed.');
       success = true;
     } else {
       _progressLine(_start, _pass, _fail, 'Some tests fail', _RED);
       print('');
       if (uncaughtError != null) {
         print('Top-level uncaught error: $uncaughtError');
@@ skipping 86 matching lines @@
       res = res.substring(firstSpace);
     }
     return '...$res';
   }
 }
 
 void useCompactVMConfiguration() {
   if (config != null) return;
   configure(new CompactVMConfiguration());
 }