| // Copyright 2016 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/scheduler.dart'; |
| import 'package:flutter_driver/src/common/find.dart'; |
| import 'package:flutter_driver/src/common/request_data.dart'; |
| import 'package:flutter_driver/src/extension/extension.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| group('waitUntilNoTransientCallbacks', () { |
| FlutterDriverExtension extension; |
| Map<String, dynamic> result; |
| int messageId = 0; |
| final List<String> log = <String>[]; |
| |
| setUp(() { |
| result = null; |
| extension = new FlutterDriverExtension((String message) async { log.add(message); return (messageId += 1).toString(); }); |
| }); |
| |
| testWidgets('returns immediately when transient callback queue is empty', (WidgetTester tester) async { |
| extension.call(new WaitUntilNoTransientCallbacks().serialize()) |
| .then<Null>(expectAsync1((Map<String, dynamic> r) { |
| result = r; |
| })); |
| |
| await tester.idle(); |
| expect( |
| result, |
| <String, dynamic>{ |
| 'isError': false, |
| 'response': null, |
| }, |
| ); |
| }); |
| |
| testWidgets('waits until no transient callbacks', (WidgetTester tester) async { |
| SchedulerBinding.instance.scheduleFrameCallback((_) { |
| // Intentionally blank. We only care about existence of a callback. |
| }); |
| |
| extension.call(new WaitUntilNoTransientCallbacks().serialize()) |
| .then<Null>(expectAsync1((Map<String, dynamic> r) { |
| result = r; |
| })); |
| |
| // Nothing should happen until the next frame. |
| await tester.idle(); |
| expect(result, isNull); |
| |
| // NOW we should receive the result. |
| await tester.pump(); |
| expect( |
| result, |
| <String, dynamic>{ |
| 'isError': false, |
| 'response': null, |
| }, |
| ); |
| }); |
| |
| testWidgets('handler', (WidgetTester tester) async { |
| expect(log, isEmpty); |
| final dynamic result = RequestDataResult.fromJson((await extension.call(new RequestData('hello').serialize()))['response']); |
| expect(log, <String>['hello']); |
| expect(result.message, '1'); |
| }); |
| }); |
| } |