dart/sdk/lib/_internal/pub/test/run/doesnt_load_an_unnecessary_transformer_test.dart

// Copyright (c) 2014, 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.

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

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

import 'package:barback/barback.dart';

class BrokenTransformer extends Transformer {
  RewriteTransformer.asPlugin() {
    throw 'This transformer is broken!';
  }

  String get allowedExtensions => '.txt';

  void apply(Transform transform) {}
}
""";

main() {
  initConfig();
  withBarbackVersions("any", () {
    integration("doesn't load an unnecessary transformer", () {
      d.dir(appPath, [
        d.pubspec({
          "name": "myapp",
          "transformers": [
            {"myapp/src/transformer": {r"$include": "lib/myapp.dart"}}
          ]
        }),
        d.dir("lib", [
          d.file("myapp.dart", ""),
          d.dir("src", [d.file("transformer.dart", TRANSFORMER)])
        ]),
        d.dir("bin", [
          d.file("hi.dart", "void main() => print('Hello!');")
        ])
      ]).create();

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

      // This shouldn't load the transformer, since it doesn't transform
      // anything that the entrypoint imports. If it did load the transformer,
      // we'd know since it would throw an exception.
      var pub = pubRun(args: ["bin/hi"]);
      pub.stdout.expect("Hello!");
      pub.shouldExit();
    });
  });
}