sdk/lib/_internal/pub/test/transformer/loads_an_aggregate_transformer_test.dart

// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS d.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 pub_tests;

import '../descriptor.dart' as d;
import '../test_pub.dart';
import '../serve/utils.dart';

const AGGREGATE_TRANSFORMER = """
import 'dart:async';

import 'package:barback/barback.dart';
import 'package:path/path.dart' as p;

class ManyToOneTransformer extends AggregateTransformer {
  ManyToOneTransformer.asPlugin();

  String classifyPrimary(AssetId id) {
    if (id.extension != '.txt') return null;
    return p.url.dirname(id.path);
  }

  Future apply(AggregateTransform transform) {
    return transform.primaryInputs.toList().then((assets) {
      assets.sort((asset1, asset2) => asset1.id.path.compareTo(asset2.id.path));
      return Future.wait(assets.map((asset) => asset.readAsString()));
    }).then((contents) {
      var id = new AssetId(transform.package,
          p.url.join(transform.key, 'out.txt'));
      transform.addOutput(new Asset.fromString(id, contents.join('\\n')));
    });
  }
}
""";

main() {
  initConfig();
  withBarbackVersions(">=0.14.1", () {
    integration("loads an aggregate transformer", () {
      d.dir(appPath, [
        d.pubspec({
          "name": "myapp",
          "transformers": ["myapp"]
        }),
        d.dir("lib", [
          d.file("transformer.dart", AGGREGATE_TRANSFORMER),
        ]),
        d.dir("web", [
          d.file("foo.txt", "foo"),
          d.file("bar.txt", "bar")
        ])
      ]).create();

      createLockFile('myapp', pkg: ['barback']);

      pubServe();
      requestShouldSucceed("out.txt", "bar\nfoo");
      endPubServe();
    });
  });
}