Move timer tests to async tests.

tests/isolate/multiple_timer_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 multiple_timer_test;
-
-import 'dart:async';
-import '../../pkg/unittest/lib/unittest.dart';
-
-const Duration TIMEOUT1 = const Duration(seconds: 1);
-const Duration TIMEOUT2 = const Duration(seconds: 2);
-const Duration TIMEOUT3 = const Duration(milliseconds: 500);
-const Duration TIMEOUT4 = const Duration(milliseconds: 1500);
-
-main() {
-  test("multiple timer test", () {
-    Stopwatch _stopwatch1 = new Stopwatch();
-    Stopwatch _stopwatch2 = new Stopwatch();
-    Stopwatch _stopwatch3 = new Stopwatch();
-    Stopwatch _stopwatch4 = new Stopwatch();
-    List<int> _order;
-    int _message;
-
-    void timeoutHandler1() {
-      // The stopwatch is more precise than the Timer. It can happen that
-      // the TIMEOUT triggers *slightly* too early.
-      expect(_stopwatch1.elapsedMilliseconds + 1,
-             greaterThanOrEqualTo(TIMEOUT1.inMilliseconds));
-      expect(_order[_message], 0);
-      _message++;
-    }
-
-    void timeoutHandler2() {
-      // The stopwatch is more precise than the Timer. It can happen that
-      // the TIMEOUT triggers *slightly* too early.
-      expect(_stopwatch2.elapsedMilliseconds + 1,
-             greaterThanOrEqualTo(TIMEOUT2.inMilliseconds));
-      expect(_order[_message], 1);
-      _message++;
-    }
-
-    void timeoutHandler3() {
-      // The stopwatch is more precise than the Timer. It can happen that
-      // the TIMEOUT triggers *slightly* too early.
-      expect(_stopwatch3.elapsedMilliseconds + 1,
-             greaterThanOrEqualTo(TIMEOUT3.inMilliseconds));
-      expect(_order[_message], 2);
-      _message++;
-    }
-
-    void timeoutHandler4() {
-      // The stopwatch is more precise than the Timer. It can happen that
-      // the TIMEOUT triggers *slightly* too early.
-      expect(_stopwatch4.elapsedMilliseconds + 1,
-             greaterThanOrEqualTo(TIMEOUT4.inMilliseconds));
-      expect(_order[_message], 3);
-      _message++;
-    }
-
-    _order = new List<int>(4);
-    _order[0] = 2;
-    _order[1] = 0;
-    _order[2] = 3;
-    _order[3] = 1;
-    _message = 0;
-
-    _stopwatch1.start();
-    new Timer(TIMEOUT1, expectAsync0(timeoutHandler1));
-    _stopwatch2.start();
-    new Timer(TIMEOUT2, expectAsync0(timeoutHandler2));
-    _stopwatch3.start();
-    new Timer(TIMEOUT3, expectAsync0(timeoutHandler3));
-    _stopwatch4.start();
-    new Timer(TIMEOUT4, expectAsync0(timeoutHandler4));
-  });
-}