| // 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.has_input; |
| |
| import 'dart:async'; |
| |
| import 'package:barback/barback.dart'; |
| |
| import 'mock.dart'; |
| |
| /// Overwrites its primary inputs with descriptions of whether various secondary |
| /// inputs exist. |
| class HasInputTransformer extends MockTransformer { |
| /// The inputs whose existence will be checked. |
| final List<AssetId> inputs; |
| |
| HasInputTransformer(Iterable<String> inputs) |
| : inputs = inputs.map((input) => new AssetId.parse(input)).toList(); |
| |
| Future<bool> doIsPrimary(Asset asset) => new Future.value(true); |
| |
| Future doApply(Transform transform) { |
| return Future.wait(inputs.map((input) { |
| return transform.hasInput(input).then((hasInput) => "$input: $hasInput"); |
| })).then((results) { |
| transform.addOutput(new Asset.fromString( |
| transform.primaryInput.id, results.join(', '))); |
| }); |
| } |
| |
| String toString() => "has inputs $inputs"; |
| } |