sdk/tests/lib/async/timer_isActive_test.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.

import 'dart:async';
import '../../../pkg/unittest/lib/unittest.dart';

main() {

  test("timer isActive test", () {
    Timer t;

    t = new Timer(const Duration(seconds: 1),
                  expectAsync0(() => expect(t.isActive, equals(false))));
    expect(t.isActive, equals(true));
  });

  test("periodic timer cancel test", () {
    Timer t;

    int i = 0;
    void checkActive(Timer timer) {
      expect(t.isActive, equals(true));
      if (i == 2) {
        t.cancel();
        expect(t.isActive, equals(false));
      }
      i++;
    }

    t = new Timer.periodic(new Duration(milliseconds: 1),
                           expectAsync1(checkActive, count: 3));
    expect(t.isActive, equals(true));
  });

  test("timer cancel test", () {
    Timer timer = new Timer(const Duration(seconds: 1),
                            () => fail("Should not be reached."));
    Timer.run(expectAsync0(() {
      expect(timer.isActive, equals(true));
      timer.cancel();
      expect(timer.isActive, equals(false));
    }));
  });
}