packages/flutter/test/cupertino/activity_indicator_test.dart

// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/cupertino.dart';
import 'package:flutter/scheduler.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  testWidgets('Activity indicator animate property works', (WidgetTester tester) async {
    await tester.pumpWidget(const Center(child: CupertinoActivityIndicator()));
    expect(SchedulerBinding.instance.transientCallbackCount, equals(1));

    await tester.pumpWidget(const Center(child: CupertinoActivityIndicator(animating: false)));
    expect(SchedulerBinding.instance.transientCallbackCount, equals(0));

    await tester.pumpWidget(Container());

    await tester.pumpWidget(const Center(child: CupertinoActivityIndicator(animating: false)));
    expect(SchedulerBinding.instance.transientCallbackCount, equals(0));

    await tester.pumpWidget(const Center(child: CupertinoActivityIndicator()));
    expect(SchedulerBinding.instance.transientCallbackCount, equals(1));
  });
}