mirror of
https://github.com/flutter/flutter
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87746c7674
* [integration_test] Reland add a `run` method for proper reporting of test results * Changes to path resolving from previous PR
416 lines
14 KiB
Dart
416 lines
14 KiB
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 'dart:async';
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import 'dart:developer' as developer;
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import 'dart:ui';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/rendering.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter/widgets.dart';
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import 'package:flutter_test/flutter_test.dart';
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// ignore: implementation_imports
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import 'package:test_core/src/direct_run.dart';
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// ignore: implementation_imports
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import 'package:test_core/src/runner/engine.dart';
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import 'package:vm_service/vm_service.dart' as vm;
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import 'package:vm_service/vm_service_io.dart' as vm_io;
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import '_callback_io.dart' if (dart.library.html) '_callback_web.dart'
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as driver_actions;
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import '_extension_io.dart' if (dart.library.html) '_extension_web.dart';
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import 'common.dart';
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import 'src/constants.dart';
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import 'src/reporter.dart';
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/// Toggles the legacy reporting mechansim where results are only collected
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/// for [testWidgets].
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///
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/// If [run] is called, this will be disabled.
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bool _isUsingLegacyReporting = true;
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/// Executes a block that contains tests.
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///
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/// Example Usage:
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/// ```
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/// import 'package:flutter_test/flutter_test.dart';
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/// import 'package:integration_test/integration_test.dart';
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///
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/// void main() => run(_testMain);
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///
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/// void _testMain() {
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/// test('A test', () {
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/// expect(true, true);
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/// });
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/// }
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/// ```
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///
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/// If not explicitly passed, the default [reporter] will send results over the
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/// platform channel to native.
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Future<void> run(
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FutureOr<void> Function() testMain, {
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Reporter reporter = const _ReporterImpl(),
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}) async {
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_isUsingLegacyReporting = false;
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final IntegrationTestWidgetsFlutterBinding binding = IntegrationTestWidgetsFlutterBinding.ensureInitialized() as IntegrationTestWidgetsFlutterBinding;
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// Pipe detailed exceptions within [testWidgets] to `package:test`.
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reportTestException = (FlutterErrorDetails details, String testDescription) {
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registerException('Test $testDescription failed: $details');
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};
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final Completer<List<TestResult>> resultsCompleter = Completer<List<TestResult>>();
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await directRunTests(
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testMain,
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reporterFactory: (Engine engine) => ResultReporter(engine, resultsCompleter),
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);
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final List<TestResult> results = await resultsCompleter.future;
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binding._updateTestResultState(<String, TestResult>{
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for (final TestResult result in results)
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result.methodName: result,
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});
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await reporter.report(results);
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}
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/// Abstract interface for a result reporter.
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abstract class Reporter {
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/// Reports test results.
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///
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/// This method will be called at the end of [run] with the [results] of
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/// running the test suite.
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Future<void> report(List<TestResult> results);
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}
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/// Default implementation of the reporter that sends results over to the
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/// platform side.
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class _ReporterImpl implements Reporter {
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const _ReporterImpl();
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@override
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Future<void> report(
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List<TestResult> results,
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) async {
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try {
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await IntegrationTestWidgetsFlutterBinding._channel.invokeMethod<void>(
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'allTestsFinished',
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<String, dynamic>{
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'results': <String, String>{
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for (final TestResult result in results)
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result.methodName: result is Failure
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? _formatFailureForPlatform(result)
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: success
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}
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},
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);
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} on MissingPluginException {
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print('Warning: integration_test test plugin was not detected.');
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}
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}
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}
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String _formatFailureForPlatform(Failure failure) => '${failure.error} ${failure.details}';
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/// A subclass of [LiveTestWidgetsFlutterBinding] that reports tests results
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/// on a channel to adapt them to native instrumentation test format.
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class IntegrationTestWidgetsFlutterBinding extends LiveTestWidgetsFlutterBinding
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implements IntegrationTestResults {
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/// If [run] is not used, sets up a listener to report that the tests are
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/// finished when everything is torn down.
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///
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/// This functionality is deprecated – clients are expected to use [run] to
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/// execute their tests instead.
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IntegrationTestWidgetsFlutterBinding() {
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if (!_isUsingLegacyReporting) {
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// TODO(jiahaog): Point users to use the CLI https://github.com/flutter/flutter/issues/66264.
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print('Using the legacy test result reporter, which will not catch all '
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'errors thrown in declared tests. Consider wrapping tests with '
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'https://api.flutter.dev/flutter/integration_test/run.html instead.');
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return;
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}
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tearDownAll(() async {
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_updateTestResultState(results);
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await const _ReporterImpl().report(results.values.toList());
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});
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final TestExceptionReporter oldTestExceptionReporter = reportTestException;
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reportTestException = (FlutterErrorDetails details, String testDescription) {
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results[testDescription] = Failure(
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testDescription,
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details.toString(),
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error: details.exception,
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);
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oldTestExceptionReporter(details, testDescription);
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};
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}
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void _updateTestResultState(Map<String, TestResult> results) {
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this.results = results;
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print('Test execution completed: $results');
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_allTestsPassed.complete(!results.values.any((TestResult result) => result is Failure));
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callbackManager.cleanup();
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}
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@override
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bool get overrideHttpClient => false;
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@override
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bool get registerTestTextInput => false;
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Size _surfaceSize;
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// This flag is used to print warning messages when tracking performance
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// under debug mode.
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static bool _firstRun = false;
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/// Artificially changes the surface size to `size` on the Widget binding,
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/// then flushes microtasks.
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///
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/// Set to null to use the default surface size.
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@override
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Future<void> setSurfaceSize(Size size) {
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return TestAsyncUtils.guard<void>(() async {
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assert(inTest);
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if (_surfaceSize == size) {
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return;
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}
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_surfaceSize = size;
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handleMetricsChanged();
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});
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}
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@override
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ViewConfiguration createViewConfiguration() {
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final double devicePixelRatio = window.devicePixelRatio;
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final Size size = _surfaceSize ?? window.physicalSize / devicePixelRatio;
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return TestViewConfiguration(
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size: size,
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window: window,
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);
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}
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@override
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Completer<bool> get allTestsPassed => _allTestsPassed;
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final Completer<bool> _allTestsPassed = Completer<bool>();
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@override
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List<Failure> get failureMethodsDetails => _failures;
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/// Similar to [WidgetsFlutterBinding.ensureInitialized].
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///
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/// Returns an instance of the [IntegrationTestWidgetsFlutterBinding], creating and
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/// initializing it if necessary.
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static WidgetsBinding ensureInitialized() {
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if (WidgetsBinding.instance == null) {
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IntegrationTestWidgetsFlutterBinding();
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}
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assert(WidgetsBinding.instance is IntegrationTestWidgetsFlutterBinding);
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return WidgetsBinding.instance;
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}
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static const MethodChannel _channel =
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MethodChannel('plugins.flutter.io/integration_test');
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/// Test results that will be populated after the tests have completed.
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@visibleForTesting
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Map<String, TestResult> results = <String, TestResult>{};
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List<Failure> get _failures => results.values.whereType<Failure>().toList();
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/// The extra data for the reported result.
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///
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/// The values in `reportData` must be json-serializable objects or `null`.
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/// If it's `null`, no extra data is attached to the result.
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///
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/// The default value is `null`.
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@override
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Map<String, dynamic> reportData;
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/// Manages callbacks received from driver side and commands send to driver
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/// side.
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final CallbackManager callbackManager = driver_actions.callbackManager;
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/// Taking a screenshot.
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///
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/// Called by test methods. Implementation differs for each platform.
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Future<void> takeScreenshot(String screenshotName) async {
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await callbackManager.takeScreenshot(screenshotName);
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}
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/// The callback function to response the driver side input.
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@visibleForTesting
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Future<Map<String, dynamic>> callback(Map<String, String> params) async {
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return await callbackManager.callback(
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params, this /* as IntegrationTestResults */);
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}
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// Emulates the Flutter driver extension, returning 'pass' or 'fail'.
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@override
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void initServiceExtensions() {
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super.initServiceExtensions();
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if (kIsWeb) {
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registerWebServiceExtension(callback);
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}
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registerServiceExtension(name: 'driver', callback: callback);
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}
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@override
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Future<void> runTest(
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Future<void> testBody(),
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VoidCallback invariantTester, {
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String description = '',
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Duration timeout,
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}) async {
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await super.runTest(
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testBody,
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invariantTester,
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description: description,
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timeout: timeout,
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);
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results[description] ??= Success(description);
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}
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vm.VmService _vmService;
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/// Initialize the [vm.VmService] settings for the timeline.
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@visibleForTesting
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Future<void> enableTimeline({
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List<String> streams = const <String>['all'],
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@visibleForTesting vm.VmService vmService,
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}) async {
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assert(streams != null);
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assert(streams.isNotEmpty);
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if (vmService != null) {
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_vmService = vmService;
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}
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if (_vmService == null) {
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final developer.ServiceProtocolInfo info =
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await developer.Service.getInfo();
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assert(info.serverUri != null);
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_vmService = await vm_io.vmServiceConnectUri(
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'ws://localhost:${info.serverUri.port}${info.serverUri.path}ws',
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);
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}
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await _vmService.setVMTimelineFlags(streams);
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}
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/// Runs [action] and returns a [vm.Timeline] trace for it.
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///
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/// Waits for the `Future` returned by [action] to complete prior to stopping
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/// the trace.
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///
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/// The `streams` parameter limits the recorded timeline event streams to only
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/// the ones listed. By default, all streams are recorded.
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/// See `timeline_streams` in
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/// [Dart-SDK/runtime/vm/timeline.cc](https://github.com/dart-lang/sdk/blob/master/runtime/vm/timeline.cc)
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///
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/// If [retainPriorEvents] is true, retains events recorded prior to calling
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/// [action]. Otherwise, prior events are cleared before calling [action]. By
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/// default, prior events are cleared.
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Future<vm.Timeline> traceTimeline(
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Future<dynamic> action(), {
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List<String> streams = const <String>['all'],
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bool retainPriorEvents = false,
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}) async {
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await enableTimeline(streams: streams);
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if (retainPriorEvents) {
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await action();
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return await _vmService.getVMTimeline();
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}
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await _vmService.clearVMTimeline();
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final vm.Timestamp startTime = await _vmService.getVMTimelineMicros();
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await action();
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final vm.Timestamp endTime = await _vmService.getVMTimelineMicros();
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return await _vmService.getVMTimeline(
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timeOriginMicros: startTime.timestamp,
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timeExtentMicros: endTime.timestamp,
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);
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}
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/// This is a convenience wrap of [traceTimeline] and send the result back to
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/// the host for the [flutter_driver] style tests.
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///
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/// This records the timeline during `action` and adds the result to
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/// [reportData] with `reportKey`. The [reportData] contains extra information
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/// from the test other than test success/fail. It will be passed back to the
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/// host and be processed by the [ResponseDataCallback] defined in
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/// [integration_test_driver.integrationDriver]. By default it will be written
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/// to `build/integration_response_data.json` with the key `timeline`.
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///
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/// For tests with multiple calls of this method, `reportKey` needs to be a
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/// unique key, otherwise the later result will override earlier one.
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///
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/// The `streams` and `retainPriorEvents` parameters are passed as-is to
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/// [traceTimeline].
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Future<void> traceAction(
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Future<dynamic> action(), {
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List<String> streams = const <String>['all'],
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bool retainPriorEvents = false,
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String reportKey = 'timeline',
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}) async {
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final vm.Timeline timeline = await traceTimeline(
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action,
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streams: streams,
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retainPriorEvents: retainPriorEvents,
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);
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reportData ??= <String, dynamic>{};
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reportData[reportKey] = timeline.toJson();
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}
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/// Watches the [FrameTiming] during `action` and report it to the binding
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/// with key `reportKey`.
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///
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/// This can be used to implement performance tests previously using
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/// [traceAction] and [TimelineSummary] from [flutter_driver]
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Future<void> watchPerformance(
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Future<void> action(), {
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String reportKey = 'performance',
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}) async {
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assert(() {
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if (_firstRun) {
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debugPrint(kDebugWarning);
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_firstRun = false;
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}
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return true;
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}());
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// The engine could batch FrameTimings and send them only once per second.
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// Delay for a sufficient time so either old FrameTimings are flushed and not
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// interfering our measurements here, or new FrameTimings are all reported.
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// TODO(CareF): remove this when flush FrameTiming is readly in engine.
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// See https://github.com/flutter/flutter/issues/64808
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// and https://github.com/flutter/flutter/issues/67593
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Future<void> delayForFrameTimings() => Future<void>.delayed(const Duration(seconds: 2));
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await delayForFrameTimings(); // flush old FrameTimings
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final List<FrameTiming> frameTimings = <FrameTiming>[];
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final TimingsCallback watcher = frameTimings.addAll;
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addTimingsCallback(watcher);
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await action();
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await delayForFrameTimings(); // make sure all FrameTimings are reported
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removeTimingsCallback(watcher);
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final FrameTimingSummarizer frameTimes =
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FrameTimingSummarizer(frameTimings);
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reportData ??= <String, dynamic>{};
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reportData[reportKey] = frameTimes.summary;
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}
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@override
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Timeout get defaultTestTimeout => _defaultTestTimeout ?? super.defaultTestTimeout;
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/// Configures the default timeout for [testWidgets].
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///
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/// See [TestWidgetsFlutterBinding.defaultTestTimeout] for more details.
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set defaultTestTimeout(Timeout timeout) => _defaultTestTimeout = timeout;
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Timeout _defaultTestTimeout;
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}
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