// 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 'dart:async'; import 'package:flutter/services.dart'; import 'package:flutter/widgets.dart'; import 'package:flutter/material.dart'; import 'package:flutter/scheduler.dart'; import 'package:flutter_test/flutter_test.dart'; import 'package:flutter_gallery/gallery/app.dart'; /// Reports success or failure to the native code. const MethodChannel _kTestChannel = const MethodChannel('io.flutter.examples.gallery/TestLifecycleListener'); Future main() async { try { runApp(const GalleryApp()); const Duration kWaitBetweenActions = const Duration(milliseconds: 250); final _LiveWidgetController controller = new _LiveWidgetController(); for (Demo demo in demos) { print('Testing "${demo.title}" demo'); final Finder menuItem = find.text(demo.title); await controller.scrollIntoView(menuItem, alignment: 0.5); await new Future.delayed(kWaitBetweenActions); for (int i = 0; i < 2; i += 1) { await controller.tap(menuItem); // Launch the demo await new Future.delayed(kWaitBetweenActions); controller.frameSync = demo.synchronized; await controller.tap(find.byTooltip('Back')); controller.frameSync = true; await new Future.delayed(kWaitBetweenActions); } print('Success'); } _kTestChannel.invokeMethod('success'); } catch (error) { _kTestChannel.invokeMethod('failure'); } } class Demo { const Demo(this.title, {this.synchronized = true}); /// The title of the demo. final String title; /// True if frameSync should be enabled for this test. final bool synchronized; } // Warning: this list must be kept in sync with the value of // kAllGalleryItems.map((GalleryItem item) => item.title).toList(); const List demos = const [ // Demos const Demo('Shrine'), const Demo('Contact profile'), const Demo('Animation'), // Material Components const Demo('Bottom navigation'), const Demo('Buttons'), const Demo('Cards'), const Demo('Chips'), const Demo('Date and time pickers'), const Demo('Dialog'), const Demo('Drawer'), const Demo('Expand/collapse list control'), const Demo('Expansion panels'), const Demo('Floating action button'), const Demo('Grid'), const Demo('Icons'), const Demo('Leave-behind list items'), const Demo('List'), const Demo('Menus'), const Demo('Modal bottom sheet'), const Demo('Page selector'), const Demo('Persistent bottom sheet'), const Demo('Progress indicators', synchronized: false), const Demo('Pull to refresh'), const Demo('Scrollable tabs'), const Demo('Selection controls'), const Demo('Sliders'), const Demo('Snackbar'), const Demo('Tabs'), const Demo('Text fields'), const Demo('Tooltips'), // Cupertino Components const Demo('Activity Indicator', synchronized: false), const Demo('Buttons'), const Demo('Dialogs'), const Demo('Sliders'), const Demo('Switches'), // Style const Demo('Colors'), const Demo('Typography'), ]; class _LiveWidgetController { final WidgetController _controller = new WidgetController(WidgetsBinding.instance); /// With [frameSync] enabled, Flutter Driver will wait to perform an action /// until there are no pending frames in the app under test. bool frameSync = true; /// Waits until at the end of a frame the provided [condition] is [true]. Future _waitUntilFrame(bool condition(), [Completer completer]) { completer ??= new Completer(); if (!condition()) { SchedulerBinding.instance.addPostFrameCallback((Duration timestamp) { _waitUntilFrame(condition, completer); }); } else { completer.complete(); } return completer.future; } /// Runs `finder` repeatedly until it finds one or more [Element]s. Future _waitForElement(Finder finder) async { if (frameSync) await _waitUntilFrame(() => SchedulerBinding.instance.transientCallbackCount == 0); await _waitUntilFrame(() => finder.precache()); if (frameSync) await _waitUntilFrame(() => SchedulerBinding.instance.transientCallbackCount == 0); return finder; } Future tap(Finder finder) async { await _controller.tap(await _waitForElement(finder)); } Future scrollIntoView(Finder finder, {double alignment}) async { final Finder target = await _waitForElement(finder); await Scrollable.ensureVisible(target.evaluate().single, duration: const Duration(milliseconds: 100), alignment: alignment); } }