blob: 6d693dcbbbfc274104df7008105f8c4b0cfc6d29 [file] [log] [blame]
// 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));
..createSync(recursive: true)