| // 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:async'; |
| |
| import 'package:flutter/foundation.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| final List<FlutterErrorDetails> errors = <FlutterErrorDetails>[]; |
| |
| Future<void> testExecutable(FutureOr<void> Function() testMain) async { |
| reportTestException = (FlutterErrorDetails details, String testDescription) { |
| errors.add(details); |
| }; |
| |
| // The error that the test throws in their run methods below will be forwarded |
| // to our exception handler above and do not cause the test to fail. The |
| // tearDown method then checks that the test threw the expected exception. |
| await testMain(); |
| } |
| |
| void pipelineOwnerTestRun() { |
| testWidgets('open SemanticsHandle from PipelineOwner fails test', (WidgetTester tester) async { |
| final int outstandingHandles = tester.binding.debugOutstandingSemanticsHandles; |
| tester.binding.ensureSemantics(); |
| expect(tester.binding.debugOutstandingSemanticsHandles, outstandingHandles + 1); |
| // SemanticsHandle is not disposed on purpose to verify in tearDown that |
| // the test failed due to an active SemanticsHandle. |
| }); |
| |
| tearDown(() { |
| expect(errors, hasLength(1)); |
| expect(errors.single.toString(), contains('SemanticsHandle was active at the end of the test')); |
| }); |
| } |
| |
| void semanticsBindingTestRun() { |
| testWidgets('open SemanticsHandle from SemanticsBinding fails test', (WidgetTester tester) async { |
| final int outstandingHandles = tester.binding.debugOutstandingSemanticsHandles; |
| tester.binding.ensureSemantics(); |
| expect(tester.binding.debugOutstandingSemanticsHandles, outstandingHandles + 1); |
| // SemanticsHandle is not disposed on purpose to verify in tearDown that |
| // the test failed due to an active SemanticsHandle. |
| }); |
| |
| tearDown(() { |
| expect(errors, hasLength(1)); |
| expect(errors.single.toString(), contains('SemanticsHandle was active at the end of the test')); |
| }); |
| } |
| |
| void failingTestTestRun() { |
| testWidgets('open SemanticsHandle from SemanticsBinding fails test', (WidgetTester tester) async { |
| final int outstandingHandles = tester.binding.debugOutstandingSemanticsHandles; |
| tester.binding.ensureSemantics(); |
| expect(tester.binding.debugOutstandingSemanticsHandles, outstandingHandles + 1); |
| |
| // Failing expectation to verify that an open semantics handle doesn't |
| // cause any cascading failures and only the failing expectation is |
| // reported. |
| expect(1, equals(2)); |
| fail('The test should never have gotten this far.'); |
| }); |
| |
| tearDown(() { |
| expect(errors, hasLength(1)); |
| expect(errors.single.toString(), contains('Expected: <2>')); |
| expect(errors.single.toString(), contains('Actual: <1>')); |
| }); |
| } |