// 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:file/file.dart'; import '../src/common.dart'; import 'test_data/stateless_stateful_project.dart'; import 'test_driver.dart'; import 'test_utils.dart'; // This test verifies that we can hot reload a stateless widget into a // stateful one and back. void main() { late Directory tempDir; final HotReloadProject project = HotReloadProject(); late FlutterRunTestDriver flutter; setUp(() async { tempDir = createResolvedTempDirectorySync('hot_reload_test.'); await project.setUpIn(tempDir); flutter = FlutterRunTestDriver(tempDir); }); tearDown(() async { await flutter.stop(); tryToDelete(tempDir); }); testWithoutContext('Can switch between stateless and stateful', () async { await flutter.run(); await flutter.hotReload(); final StringBuffer stdout = StringBuffer(); final StreamSubscription<String> subscription = flutter.stdout.listen(stdout.writeln); // switch to stateful. project.toggleState(); await flutter.hotReload(); // switch to stateless. project.toggleState(); await flutter.hotReload(); final String logs = stdout.toString(); expect(logs, contains('STATELESS')); expect(logs, contains('STATEFUL')); await subscription.cancel(); }); }