| // Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file |
| // for details. 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:io'; |
| |
| import 'package:path/path.dart' as path; |
| import 'package:test/test.dart'; |
| |
| /// Will test [actual] against the contests of the file at [goldenFilePath]. |
| /// |
| /// If the file doesn't exist, the file is instead created containing [actual]. |
| void expectMatchesGoldenFile(String actual, String goldenFilePath) { |
| var goldenFile = File(goldenFilePath); |
| if (goldenFile.existsSync()) { |
| expect(actual, equals(goldenFile.readAsStringSync()), |
| reason: 'goldenFilePath: "$goldenFilePath"'); |
| } else { |
| // This enables writing the updated file when the run in otherwise hermetic |
| // settings. |
| var workspaceDirectory = Platform.environment['BUILD_WORKSPACE_DIRECTORY']; |
| if (workspaceDirectory != null) { |
| goldenFile = File(path.join(workspaceDirectory, goldenFilePath)); |
| } |
| goldenFile |
| ..createSync(recursive: true) |
| ..writeAsStringSync(actual); |
| } |
| } |