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31fc593724
This test was outputting the "success" string multiple times, which is probably causing the harness to kill the app halfway through its cycle. I suspect this is causing some of the flakiness we've seen of this test. Instead, we should just output the string at the very end of the test, right before the app is done.
101 lines
2.4 KiB
Dart
101 lines
2.4 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:js_interop';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/widgets.dart';
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import 'package:meta/dart2js.dart';
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import 'package:web/web.dart' as web;
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// Tests that the framework prints stack traces in all build modes.
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//
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// Regression test for https://github.com/flutter/flutter/issues/68616.
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//
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// See also `dev/integration_tests/web/lib/stack_trace.dart` that tests the
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// framework's ability to parse stack traces in all build modes.
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Future<void> main() async {
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final StringBuffer errorMessage = StringBuffer();
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debugPrint = (String? message, { int? wrapWidth }) {
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errorMessage.writeln(message);
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};
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runApp(const ThrowingWidget());
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// Let the framework flush error messages.
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await Future<void>.delayed(Duration.zero);
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final StringBuffer output = StringBuffer();
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if (_errorMessageFormattedCorrectly(errorMessage.toString())) {
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output.writeln('--- TEST SUCCEEDED ---');
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} else {
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output.writeln('--- UNEXPECTED ERROR MESSAGE FORMAT ---');
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output.writeln(errorMessage);
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output.writeln('--- TEST FAILED ---');
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}
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await web.window.fetch(
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'/test-result'.toJS,
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web.RequestInit(
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method: 'POST',
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body: '$output'.toJS,
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)
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).toDart;
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print(output);
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}
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bool _errorMessageFormattedCorrectly(String errorMessage) {
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if (!errorMessage.contains('Test error message')) {
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return false;
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}
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// In release mode symbols are minified. No sense testing the contents of the stack trace.
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if (kReleaseMode) {
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return true;
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}
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const List<String> expectedFunctions = <String>[
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'topLevelFunction',
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'secondLevelFunction',
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'thirdLevelFunction',
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];
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return expectedFunctions.every(errorMessage.contains);
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}
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class ThrowingWidget extends StatefulWidget {
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const ThrowingWidget({super.key});
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@override
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State<ThrowingWidget> createState() => _ThrowingWidgetState();
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}
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class _ThrowingWidgetState extends State<ThrowingWidget> {
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@override
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void initState() {
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super.initState();
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topLevelFunction();
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}
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@override
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Widget build(BuildContext context) {
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return Container();
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}
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}
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@noInline
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void topLevelFunction() {
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secondLevelFunction();
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}
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@noInline
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void secondLevelFunction() {
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thirdLevelFunction();
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}
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@noInline
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void thirdLevelFunction() {
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throw Exception('Test error message');
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}
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