| // Copyright (c) 2013, 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. |
| |
| library barback.test.transformer.check_content; |
| |
| import 'dart:async'; |
| |
| import 'package:barback/barback.dart'; |
| |
| import 'mock.dart'; |
| |
| /// A transformer that modifies assets with the given content. |
| class CheckContentTransformer extends MockTransformer { |
| final String content; |
| final String addition; |
| |
| CheckContentTransformer(this.content, this.addition); |
| |
| Future<bool> doIsPrimary(Asset asset) => |
| asset.readAsString().then((value) => value == content); |
| |
| Future doApply(Transform transform) { |
| return getPrimary(transform).then((primary) { |
| return primary.readAsString().then((value) { |
| transform.addOutput( |
| new Asset.fromString(primary.id, "$value$addition")); |
| }); |
| }); |
| } |
| } |