60 lines
2.7 KiB
Dart
60 lines
2.7 KiB
Dart
// Copyright 2016 The Chromium 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_test/flutter_test.dart';
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import 'package:flutter/widgets.dart';
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class TestValueKey<T> extends ValueKey<T> {
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const TestValueKey(T value) : super(value);
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}
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class NotEquals {
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const NotEquals();
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@override
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bool operator ==(dynamic other) => false;
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@override
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int get hashCode => 0;
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}
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void main() {
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testWidgets('Keys', (WidgetTester tester) async {
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expect(new ValueKey<int>(nonconst(3)) == new ValueKey<int>(nonconst(3)), isTrue);
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expect(new ValueKey<num>(nonconst(3)) == new ValueKey<int>(nonconst(3)), isFalse);
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expect(new ValueKey<int>(nonconst(3)) == new ValueKey<int>(nonconst(2)), isFalse);
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expect(const ValueKey<double>(double.NAN) == const ValueKey<double>(double.NAN), isFalse);
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expect(new Key(nonconst('')) == new ValueKey<String>(nonconst('')), isTrue);
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expect(new ValueKey<String>(nonconst('')) == new ValueKey<String>(nonconst('')), isTrue);
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expect(new TestValueKey<String>(nonconst('')) == new ValueKey<String>(nonconst('')), isFalse);
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expect(new TestValueKey<String>(nonconst('')) == new TestValueKey<String>(nonconst('')), isTrue);
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expect(new ValueKey<String>(nonconst('')) == new ValueKey<dynamic>(nonconst('')), isFalse);
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expect(new TestValueKey<String>(nonconst('')) == new TestValueKey<dynamic>(nonconst('')), isFalse);
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expect(new UniqueKey() == new UniqueKey(), isFalse);
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final LocalKey k = new UniqueKey();
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expect(new UniqueKey() == new UniqueKey(), isFalse);
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expect(k == k, isTrue);
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expect(new ValueKey<LocalKey>(k) == new ValueKey<LocalKey>(k), isTrue);
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expect(new ValueKey<LocalKey>(k) == new ValueKey<UniqueKey>(k), isFalse);
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expect(new ObjectKey(k) == new ObjectKey(k), isTrue);
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final NotEquals constNotEquals = nonconst(const NotEquals());
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expect(new ValueKey<NotEquals>(constNotEquals) == new ValueKey<NotEquals>(constNotEquals), isFalse);
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expect(new ObjectKey(constNotEquals) == new ObjectKey(constNotEquals), isTrue);
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final Object constObject = nonconst(const Object());
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expect(new ObjectKey(constObject) == new ObjectKey(constObject), isTrue);
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expect(new ObjectKey(new Object()) == new ObjectKey(new Object()), isFalse);
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expect(const ValueKey<bool>(true), hasOneLineDescription);
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expect(new UniqueKey(), hasOneLineDescription);
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expect(const ObjectKey(true), hasOneLineDescription);
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expect(new GlobalKey(), hasOneLineDescription);
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expect(new GlobalKey(debugLabel: 'hello'), hasOneLineDescription);
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expect(const GlobalObjectKey(true), hasOneLineDescription);
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});
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}
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