36 lines
993 B
Dart
36 lines
993 B
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_test/flutter_test.dart';
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// based on the sample code in foundation/binding.dart
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mixin FooBinding on BindingBase {
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@override
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void initInstances() {
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super.initInstances();
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_instance = this;
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}
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static FooBinding get instance => BindingBase.checkInstance(_instance);
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static FooBinding? _instance;
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}
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class FooLibraryBinding extends BindingBase with FooBinding {
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static FooBinding ensureInitialized() {
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if (FooBinding._instance == null) {
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FooLibraryBinding();
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}
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return FooBinding.instance;
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}
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}
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void main() {
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test('BindingBase.debugBindingType', () async {
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expect(BindingBase.debugBindingType(), isNull);
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FooLibraryBinding.ensureInitialized();
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expect(BindingBase.debugBindingType(), FooLibraryBinding);
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});
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}
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