| // 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 'package:flutter/foundation.dart'; |
| import 'package:flutter/material.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| // Only check the initial lines of the message, since the message walks the |
| // entire widget tree back, and any changes to the widget tree break these |
| // tests if we check the entire message. |
| void _expectStartsWith(List<String?> actual, List<String?> matcher) { |
| expect(actual.sublist(0, matcher.length), equals(matcher)); |
| } |
| |
| void main() { |
| final _MockLiveTestWidgetsFlutterBinding binding = _MockLiveTestWidgetsFlutterBinding(); |
| |
| testWidgets('Should print message on pointer events', (WidgetTester tester) async { |
| final List<String?> printedMessages = <String?>[]; |
| |
| int invocations = 0; |
| await tester.pumpWidget( |
| Directionality( |
| textDirection: TextDirection.ltr, |
| child: Center( |
| child: GestureDetector( |
| onTap: () { |
| invocations++; |
| }, |
| child: const Text('Test'), |
| ), |
| ), |
| ), |
| ); |
| |
| final Size windowCenter = tester.binding.window.physicalSize / |
| tester.binding.window.devicePixelRatio / |
| 2; |
| final double windowCenterX = windowCenter.width; |
| final double windowCenterY = windowCenter.height; |
| |
| final Offset widgetCenter = tester.getRect(find.byType(Text)).center; |
| expect(widgetCenter.dx, windowCenterX); |
| expect(widgetCenter.dy, windowCenterY); |
| |
| await binding.collectDebugPrints(printedMessages, () async { |
| await tester.tap(find.byType(Text)); |
| }); |
| await tester.pump(); |
| expect(invocations, 0); |
| |
| _expectStartsWith(printedMessages, ''' |
| Some possible finders for the widgets at Offset(400.0, 300.0): |
| find.text('Test') |
| '''.trim().split('\n')); |
| printedMessages.clear(); |
| |
| await binding.collectDebugPrints(printedMessages, () async { |
| await tester.tapAt(const Offset(1, 1)); |
| }); |
| expect(printedMessages, equals(''' |
| No widgets found at Offset(1.0, 1.0). |
| '''.trim().split('\n'))); |
| }); |
| |
| testWidgets('Should print message on pointer events with setSurfaceSize', (WidgetTester tester) async { |
| final List<String?> printedMessages = <String?>[]; |
| |
| int invocations = 0; |
| await tester.pumpWidget( |
| Directionality( |
| textDirection: TextDirection.ltr, |
| child: Center( |
| child:GestureDetector( |
| onTap: () { |
| invocations++; |
| }, |
| child: const Text('Test'), |
| ), |
| ), |
| ), |
| ); |
| |
| final Size originalSize = tester.binding.createViewConfiguration().size; |
| await tester.binding.setSurfaceSize(const Size(2000, 1800)); |
| try { |
| await tester.pump(); |
| |
| final Offset widgetCenter = tester.getRect(find.byType(Text)).center; |
| expect(widgetCenter.dx, 1000); |
| expect(widgetCenter.dy, 900); |
| |
| await binding.collectDebugPrints(printedMessages, () async { |
| await tester.tap(find.byType(Text)); |
| }); |
| await tester.pump(); |
| expect(invocations, 0); |
| |
| _expectStartsWith(printedMessages, ''' |
| Some possible finders for the widgets at Offset(1000.0, 900.0): |
| find.text('Test') |
| '''.trim().split('\n')); |
| printedMessages.clear(); |
| |
| await binding.collectDebugPrints(printedMessages, () async { |
| await tester.tapAt(const Offset(1, 1)); |
| }); |
| expect(printedMessages, equals(''' |
| No widgets found at Offset(1.0, 1.0). |
| '''.trim().split('\n'))); |
| } finally { |
| await tester.binding.setSurfaceSize(originalSize); |
| } |
| }); |
| } |
| |
| class _MockLiveTestWidgetsFlutterBinding extends LiveTestWidgetsFlutterBinding { |
| @override |
| void handlePointerEventForSource( |
| PointerEvent event, { |
| TestBindingEventSource source = TestBindingEventSource.device, |
| }) { |
| // In this test we use `WidgetTester.tap` to simulate real device touches. |
| // `WidgetTester.tap` sends events in the local coordinate system, while |
| // real devices touches sends event in the global coordinate system. |
| // See the documentation of [handlePointerEventForSource] for details. |
| if (source == TestBindingEventSource.test) { |
| final PointerEvent globalEvent = event.copyWith(position: localToGlobal(event.position)); |
| return super.handlePointerEventForSource(globalEvent); |
| } |
| return super.handlePointerEventForSource(event, source: source); |
| } |
| |
| List<String?>? _storeDebugPrints; |
| |
| @override |
| DebugPrintCallback get debugPrintOverride { |
| return _storeDebugPrints == null |
| ? super.debugPrintOverride |
| : ((String? message, { int? wrapWidth }) => _storeDebugPrints!.add(message)); |
| } |
| |
| // Execute `task` while redirecting [debugPrint] to appending to `store`. |
| Future<void> collectDebugPrints(List<String?>? store, AsyncValueGetter<void> task) async { |
| _storeDebugPrints = store; |
| try { |
| await task(); |
| } finally { |
| _storeDebugPrints = null; |
| } |
| } |
| } |