sdk/lib/_internal/pub/test/transformer/configuration/passes_configuration_to_a_transformer_test.dart

// Copyright (c) 2013, 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 'dart:convert';

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

final transformer = """
import 'dart:async';
import 'dart:convert';

import 'package:barback/barback.dart';

class ConfigTransformer extends Transformer {
  final BarbackSettings settings;

  ConfigTransformer.asPlugin(this.settings);

  String get allowedExtensions => '.txt';

  Future apply(Transform transform) {
    return transform.primaryInput.readAsString().then((contents) {
      var id = transform.primaryInput.id.changeExtension(".json");
      transform.addOutput(
        new Asset.fromString(id, JSON.encode(settings.configuration)));
    });
  }
}
""";

main() {
  initConfig();
  withBarbackVersions("any", () {
    integration("passes configuration to a transformer", () {
      var configuration = {"param": ["list", "of", "values"]};

      d.dir(appPath, [
        d.pubspec({
          "name": "myapp",
          "transformers": [{"myapp/src/transformer": configuration}]
        }),
        d.dir("lib", [d.dir("src", [
          d.file("transformer.dart", transformer)
        ])]),
        d.dir("web", [
          d.file("foo.txt", "foo")
        ])
      ]).create();

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

      var server = pubServe();
      requestShouldSucceed("foo.json", JSON.encode(configuration));
      endPubServe();
    });
  });
}