| // 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:convert'; |
| import 'dart:io'; |
| |
| import 'package:flutter_test/flutter_test.dart'; |
| import 'package:path/path.dart' as path; |
| |
| final String bat = Platform.isWindows ? '.bat' : ''; |
| final String _flutterBin = path.join(Directory.current.parent.parent.path, 'bin', 'flutter$bat'); |
| const String _integrationResultsPrefix = 'IntegrationTestWidgetsFlutterBinding test results:'; |
| const String _failureExcerpt = r'Expected: <false>\n Actual: <true>'; |
| |
| Future<void> main() async { |
| group('Integration binding result', () { |
| test('when multiple tests pass', () async { |
| final Map<String, dynamic>? results = await _runTest(path.join('test', 'data', 'pass_test_script.dart')); |
| |
| expect( |
| results, |
| equals(<String, dynamic>{ |
| 'passing test 1': 'success', |
| 'passing test 2': 'success', |
| })); |
| }); |
| |
| test('when multiple tests fail', () async { |
| final Map<String, dynamic>? results = await _runTest(path.join('test', 'data', 'fail_test_script.dart')); |
| |
| expect(results, hasLength(2)); |
| expect(results, containsPair('failing test 1', contains(_failureExcerpt))); |
| expect(results, containsPair('failing test 2', contains(_failureExcerpt))); |
| }); |
| |
| test('when one test passes, then another fails', () async { |
| final Map<String, dynamic>? results = await _runTest(path.join('test', 'data', 'pass_then_fail_test_script.dart')); |
| |
| expect(results, hasLength(2)); |
| expect(results, containsPair('passing test', equals('success'))); |
| expect(results, containsPair('failing test', contains(_failureExcerpt))); |
| }); |
| |
| test('when one test fails, then another passes', () async { |
| final Map<String, dynamic>? results = await _runTest(path.join('test', 'data', 'fail_then_pass_test_script.dart')); |
| |
| expect(results, hasLength(2)); |
| expect(results, containsPair('failing test', contains(_failureExcerpt))); |
| expect(results, containsPair('passing test', equals('success'))); |
| }); |
| }); |
| } |
| |
| /// Runs a test script and returns the [IntegrationTestWidgetsFlutterBinding.result]. |
| /// |
| /// [scriptPath] is relative to the package root. |
| Future<Map<String, dynamic>?> _runTest(String scriptPath) async { |
| final Process process = |
| await Process.start(_flutterBin, <String>['test', '--machine', scriptPath]); |
| |
| /// In the test [tearDownAll] block, the test results are encoded into JSON and |
| /// are printed with the [_integrationResultsPrefix] prefix. |
| /// |
| /// See the following for the test event spec which we parse the printed lines |
| /// out of: https://github.com/dart-lang/test/blob/master/pkgs/test/doc/json_reporter.md |
| final String testResults = (await process.stdout |
| .transform(utf8.decoder) |
| .expand((String text) => text.split('\n')) |
| .map<dynamic>((String line) { |
| try { |
| return jsonDecode(line); |
| } on FormatException { |
| // Only interested in test events which are JSON. |
| } |
| }) |
| .expand<Map<String, dynamic>>((dynamic json) { |
| if (json is List<dynamic>) { |
| return json.cast(); |
| } |
| return <Map<String, dynamic>>[ |
| if (json != null) |
| json as Map<String, dynamic> |
| ]; |
| }) |
| .where((Map<String, dynamic> testEvent) => testEvent['type'] == 'print') |
| .map((Map<String, dynamic> printEvent) => printEvent['message'] as String) |
| .firstWhere((String message) => message.startsWith(_integrationResultsPrefix))) |
| .replaceAll(_integrationResultsPrefix, ''); |
| |
| return jsonDecode(testResults) as Map<String, dynamic>?; |
| } |