| // Copyright 2014 The Flutter 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 'dart:async'; |
| import 'package:flutter/services.dart'; |
| import 'test_step.dart'; |
| |
| Future<TestStepResult> systemNavigatorPop() { |
| const BasicMessageChannel<String> channel = BasicMessageChannel<String>( |
| 'navigation-test', |
| StringCodec(), |
| ); |
| |
| final Completer<TestStepResult> completer = Completer<TestStepResult>(); |
| |
| channel.setMessageHandler((String message) async { |
| completer.complete( |
| const TestStepResult('System navigation pop', '', TestStatus.ok)); |
| return ''; |
| }); |
| SystemNavigator.pop(); |
| return completer.future; |
| } |