| // 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.bad; |
| |
| import 'dart:async'; |
| |
| import 'package:barback/barback.dart'; |
| import 'package:barback/src/utils.dart'; |
| |
| import 'mock.dart'; |
| |
| /// A transformer that throws an exception when run, after generating the |
| /// given outputs. |
| class BadTransformer extends MockTransformer { |
| /// The error it throws. |
| static const ERROR = "I am a bad transformer!"; |
| |
| /// The list of asset names that it should output. |
| final List<String> outputs; |
| |
| BadTransformer(this.outputs); |
| |
| Future<bool> doIsPrimary(Asset asset) => new Future.value(true); |
| |
| Future doApply(Transform transform) { |
| return newFuture(() { |
| // Create the outputs first. |
| for (var output in outputs) { |
| var id = new AssetId.parse(output); |
| transform.addOutput(new Asset.fromString(id, output)); |
| } |
| |
| // Then fail. |
| throw ERROR; |
| }); |
| } |
| } |