blob: 75702af3da864c54527efa0ef5f1333b53abfcec [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/material.dart';
import 'package:flutter_api_samples/widgets/magnifier/magnifier.0.dart'
as example;
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets('should update magnifier position on drag', (WidgetTester tester) async {
await tester.pumpWidget(const example.MagnifierExampleApp());
Matcher isPositionedAt(Offset at) {
return isA<Positioned>().having(
(Positioned positioned) => Offset(positioned.left!, positioned.top!),
'magnifier position',
at,
);
}
expect(
tester.widget(find.byType(Positioned)),
isPositionedAt(Offset.zero),
);
final Offset centerOfFlutterLogo = tester.getCenter(find.byType(Positioned));
final Offset topLeftOfFlutterLogo = tester.getTopLeft(find.byType(FlutterLogo));
const Offset dragDistance = Offset(10, 10);
await tester.dragFrom(centerOfFlutterLogo, dragDistance);
await tester.pump();
expect(
tester.widget(find.byType(Positioned)),
// Need to adjust by the topleft since the position is local.
isPositionedAt((centerOfFlutterLogo - topLeftOfFlutterLogo) + dragDistance),
);
});
testWidgets('should match golden', (WidgetTester tester) async {
await tester.pumpWidget(const example.MagnifierExampleApp());
final Offset centerOfFlutterLogo = tester.getCenter(find.byType(Positioned));
const Offset dragDistance = Offset(10, 10);
await tester.dragFrom(centerOfFlutterLogo, dragDistance);
await tester.pump();
await expectLater(
find.byType(RepaintBoundary).last,
matchesGoldenFile('magnifier.0_test.png'),
);
});
}