blob: 8f2977c8064aa82d0ead2a47ceea4979f64eb3a4 [file] [log] [blame]
// 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.
// ATTENTION!
//
// This file is not named "*_test.dart", and as such will not run when you run
// "flutter test". It is only intended to be run as part of the
// flutter_gallery_instrumentation_test devicelab test.
import 'dart:async';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/scheduler.dart';
import 'package:flutter/services.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:flutter_gallery/gallery/demos.dart';
import 'package:flutter_gallery/gallery/app.dart' show GalleryApp;
// Reports success or failure to the native code.
const MethodChannel _kTestChannel = MethodChannel('io.flutter.demo.gallery/TestLifecycleListener');
// We don't want to wait for animations to complete before tapping the
// back button in the demos with these titles.
const List<String> _kUnsynchronizedDemoTitles = <String>[
'Progress indicators',
'Activity Indicator',
'Video',
];
// These demos can't be backed out of by tapping a button whose
// tooltip is 'Back'.
const List<String> _kSkippedDemoTitles = <String>[
'Progress indicators',
'Activity Indicator',
'Video',
];
// There are 3 places where the Gallery demos are traversed.
// 1- In widget tests such as examples/flutter_gallery/test/smoke_test.dart
// 2- In driver tests such as examples/flutter_gallery/test_driver/transitions_perf_test.dart
// 3- In on-device instrumentation tests such as examples/flutter_gallery/test/live_smoketest.dart
//
// If you change navigation behavior in the Gallery or in the framework, make
// sure all 3 are covered.
Future<void> main() async {
try {
// Verify that _kUnsynchronizedDemos and _kSkippedDemos identify
// demos that actually exist.
final List<String> allDemoTitles = kAllGalleryDemos.map((GalleryDemo demo) => demo.title).toList();
if (!Set<String>.from(allDemoTitles).containsAll(_kUnsynchronizedDemoTitles))
fail('Unrecognized demo titles in _kUnsynchronizedDemosTitles: $_kUnsynchronizedDemoTitles');
if (!Set<String>.from(allDemoTitles).containsAll(_kSkippedDemoTitles))
fail('Unrecognized demo names in _kSkippedDemoTitles: $_kSkippedDemoTitles');
print('Starting app...');
runApp(const GalleryApp(testMode: true));
final _LiveWidgetController controller = _LiveWidgetController(WidgetsBinding.instance);
for (GalleryDemoCategory category in kAllGalleryDemoCategories) {
print('Tapping "${category.name}" section...');
await controller.tap(find.text(category.name));
for (GalleryDemo demo in kGalleryCategoryToDemos[category]) {
final Finder demoItem = find.text(demo.title);
print('Scrolling to "${demo.title}"...');
await controller.scrollIntoView(demoItem, alignment: 0.5);
if (_kSkippedDemoTitles.contains(demo.title))
continue;
for (int i = 0; i < 2; i += 1) {
print('Tapping "${demo.title}"...');
await controller.tap(demoItem); // Launch the demo
controller.frameSync = !_kUnsynchronizedDemoTitles.contains(demo.title);
print('Going back to demo list...');
await controller.tap(backFinder);
controller.frameSync = true;
}
}
print('Going back to home screen...');
await controller.tap(find.byTooltip('Back'));
}
print('Finished successfully!');
_kTestChannel.invokeMethod('success');
} catch (error, stack) {
print('Caught error: $error\n$stack');
_kTestChannel.invokeMethod('failure');
}
}
final Finder backFinder = find.byElementPredicate(
(Element element) {
final Widget widget = element.widget;
if (widget is Tooltip)
return widget.message == 'Back';
if (widget is CupertinoNavigationBarBackButton)
return true;
return false;
},
description: 'Material or Cupertino back button',
);
class _LiveWidgetController extends LiveWidgetController {
_LiveWidgetController(WidgetsBinding binding) : super(binding);
/// 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<void> _waitUntilFrame(bool condition(), [Completer<void> completer]) {
completer ??= Completer<void>();
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<Finder> _waitForElement(Finder finder) async {
if (frameSync)
await _waitUntilFrame(() => binding.transientCallbackCount == 0);
await _waitUntilFrame(() => finder.precache());
if (frameSync)
await _waitUntilFrame(() => binding.transientCallbackCount == 0);
return finder;
}
@override
Future<void> tap(Finder finder, { int pointer }) async {
await super.tap(await _waitForElement(finder), pointer: pointer);
}
Future<void> 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);
}
}