blob: 4f9871011ecc6e1219f0b9e79c2a36e55bd4076f [file] [log] [blame]
// 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.view.physicalSize /
tester.view.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, renderView));
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;
}
}
}