mirror of
https://github.com/flutter/flutter
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154 lines
4.9 KiB
Dart
154 lines
4.9 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_test/flutter_test.dart';
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// Only check the initial lines of the message, since the message walks the
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// entire widget tree back, and any changes to the widget tree break these
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// tests if we check the entire message.
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void _expectStartsWith(List<String?> actual, List<String?> matcher) {
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expect(actual.sublist(0, matcher.length), equals(matcher));
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}
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void main() {
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final _MockLiveTestWidgetsFlutterBinding binding = _MockLiveTestWidgetsFlutterBinding();
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testWidgets('Should print message on pointer events', (WidgetTester tester) async {
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final List<String?> printedMessages = <String?>[];
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int invocations = 0;
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Center(
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child: GestureDetector(
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onTap: () {
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invocations++;
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},
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child: const Text('Test'),
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),
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),
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),
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);
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final Size windowCenter = tester.binding.window.physicalSize /
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tester.binding.window.devicePixelRatio /
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2;
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final double windowCenterX = windowCenter.width;
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final double windowCenterY = windowCenter.height;
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final Offset widgetCenter = tester.getRect(find.byType(Text)).center;
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expect(widgetCenter.dx, windowCenterX);
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expect(widgetCenter.dy, windowCenterY);
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await binding.collectDebugPrints(printedMessages, () async {
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await tester.tap(find.byType(Text));
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});
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await tester.pump();
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expect(invocations, 0);
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_expectStartsWith(printedMessages, '''
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Some possible finders for the widgets at Offset(400.0, 300.0):
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find.text('Test')
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'''.trim().split('\n'));
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printedMessages.clear();
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await binding.collectDebugPrints(printedMessages, () async {
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await tester.tapAt(const Offset(1, 1));
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});
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expect(printedMessages, equals('''
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No widgets found at Offset(1.0, 1.0).
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'''.trim().split('\n')));
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});
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testWidgets('Should print message on pointer events with setSurfaceSize', (WidgetTester tester) async {
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final List<String?> printedMessages = <String?>[];
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int invocations = 0;
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Center(
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child:GestureDetector(
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onTap: () {
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invocations++;
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},
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child: const Text('Test'),
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),
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),
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),
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);
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final Size originalSize = tester.binding.createViewConfiguration().size;
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await tester.binding.setSurfaceSize(const Size(2000, 1800));
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try {
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await tester.pump();
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final Offset widgetCenter = tester.getRect(find.byType(Text)).center;
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expect(widgetCenter.dx, 1000);
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expect(widgetCenter.dy, 900);
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await binding.collectDebugPrints(printedMessages, () async {
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await tester.tap(find.byType(Text));
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});
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await tester.pump();
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expect(invocations, 0);
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_expectStartsWith(printedMessages, '''
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Some possible finders for the widgets at Offset(1000.0, 900.0):
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find.text('Test')
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'''.trim().split('\n'));
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printedMessages.clear();
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await binding.collectDebugPrints(printedMessages, () async {
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await tester.tapAt(const Offset(1, 1));
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});
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expect(printedMessages, equals('''
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No widgets found at Offset(1.0, 1.0).
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'''.trim().split('\n')));
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} finally {
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await tester.binding.setSurfaceSize(originalSize);
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}
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});
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}
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class _MockLiveTestWidgetsFlutterBinding extends LiveTestWidgetsFlutterBinding {
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@override
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void handlePointerEventForSource(
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PointerEvent event, {
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TestBindingEventSource source = TestBindingEventSource.device,
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}) {
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// In this test we use `WidgetTester.tap` to simulate real device touches.
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// `WidgetTester.tap` sends events in the local coordinate system, while
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// real devices touches sends event in the global coordinate system.
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// See the documentation of [handlePointerEventForSource] for details.
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if (source == TestBindingEventSource.test) {
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final PointerEvent globalEvent = event.copyWith(position: localToGlobal(event.position));
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return super.handlePointerEventForSource(globalEvent);
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}
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return super.handlePointerEventForSource(event, source: source);
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}
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List<String?>? _storeDebugPrints;
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@override
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DebugPrintCallback get debugPrintOverride {
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return _storeDebugPrints == null
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? super.debugPrintOverride
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: ((String? message, { int? wrapWidth }) => _storeDebugPrints!.add(message));
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}
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// Execute `task` while redirecting [debugPrint] to appending to `store`.
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Future<void> collectDebugPrints(List<String?>? store, AsyncValueGetter<void> task) async {
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_storeDebugPrints = store;
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try {
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await task();
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} finally {
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_storeDebugPrints = null;
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}
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}
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}
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