Implement measurement using futures

client/testing/unittest/unittestsuite.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.
 
 // TODO(rnystrom): This code is gradually moving from a Java/JUnit style to
 // something closer to JS/Jasmine. Eventually, the UnitTestSuite class can go
 // away completely (or become private to this library) and the only exposed API
 // will be group()/test()/expect(). Until then, both ways are supported, which
 // is why things look a bit weird in here.
 
@@ skipping 287 matching lines @@
   final testCase = new TestCase(
       _currentSuite._tests.length + 1, _fullSpec(spec), body, callbacks);
   _currentSuite._tests.add(testCase);
 
   if (callbacks < 1) {
     testCase.recordError(
         'Async tests must wait for at least one callback ', '');
   }
 }
 
+void serialInvokeAsync(List closures) {
+  final length = closures.length;
+  if (length > 0) {
+    int i = 0;
+    void invokeNext() {
+      closures[i]();
+      i++;
+      if (i < length) {
+        window.setTimeout(invokeNext, 0);
+      }
+    }
+    window.setTimeout(invokeNext, 0);
+  }
+} 
+
 /**
  * Creates a new named group of tests. Calls to group() or test() within the
  * body of the function passed to this will inherit this group's description.
  */
 void group(String description, void body()) {
   _ensureActiveSuite();
 
   // Concatenate the new group.
   final oldGroup = _currentGroup;
   if (_currentGroup != '') {
@@ skipping 206 matching lines @@
         </tr>""";
     if (stackTrace != null) {
       message +=
           "<tr><td></td><td colspan='2'><pre>${stackTrace}</pre></td></tr>";
     }
     fail = true;
   }
 }
 
 typedef void TestFunction();