flutter/examples/api/test/widgets/navigator_utils.dart
Justin McCandless f68d03f1cd
Reland root predictive back (#132249)
Root predictive back (https://github.com/flutter/flutter/pull/120385) was reverted in https://github.com/flutter/flutter/pull/132167.  This PR is an attempt to reland it.

The reversion happened due to failed Google tests (b/295073110).
2023-08-17 23:55:05 +00:00

21 lines
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Dart

// 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/services.dart';
import 'package:flutter_test/flutter_test.dart';
/// Simulates a system back, like a back gesture on Android.
///
/// Sends the same platform channel message that the engine sends when it
/// receives a system back.
Future<void> simulateSystemBack() {
return TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger.handlePlatformMessage(
'flutter/navigation',
const JSONMessageCodec().encodeMessage(<String, dynamic>{
'method': 'popRoute',
}),
(ByteData? _) {},
);
}