blob: 695a69dd96086eb3bc490f03b3f38e634470c4d3 [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 'dart:ui';
import 'package:flutter/src/widgets/view.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets('Widgets running with runApp can find View', (WidgetTester tester) async {
FlutterView? viewOf;
FlutterView? viewMaybeOf;
runApp(
Builder(
builder: (BuildContext context) {
viewOf = View.of(context);
viewMaybeOf = View.maybeOf(context);
return Container();
},
),
);
expect(viewOf, isNotNull);
expect(viewOf, isA<FlutterView>());
expect(viewMaybeOf, isNotNull);
expect(viewMaybeOf, isA<FlutterView>());
});
testWidgets('Widgets running with pumpWidget can find View', (WidgetTester tester) async {
FlutterView? view;
FlutterView? viewMaybeOf;
await tester.pumpWidget(
Builder(
builder: (BuildContext context) {
view = View.of(context);
viewMaybeOf = View.maybeOf(context);
return Container();
},
),
);
expect(view, isNotNull);
expect(view, isA<FlutterView>());
expect(viewMaybeOf, isNotNull);
expect(viewMaybeOf, isA<FlutterView>());
});
testWidgets('cannot find View behind a LookupBoundary', (WidgetTester tester) async {
await tester.pumpWidget(
LookupBoundary(
child: Container(),
),
);
final BuildContext context = tester.element(find.byType(Container));
expect(View.maybeOf(context), isNull);
expect(
() => View.of(context),
throwsA(isA<FlutterError>().having(
(FlutterError error) => error.message,
'message',
contains('The context provided to View.of() does have a View widget ancestor, but it is hidden by a LookupBoundary.'),
)),
);
});
}