sdk/lib/_internal/pub/test/transformer/detects_an_ordering_dependency_cycle_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 '../descriptor.dart' as d;
import '../test_pub.dart';
import '../serve/utils.dart';

main() {
  initConfig();
  withBarbackVersions("any", () {
    integration("detects an ordering dependency cycle", () {
      d.dir("foo", [
        d.pubspec({
          "name": "foo",
          "version": "1.0.0",
          "transformers": ["myapp/transformer"],
          "dependencies": {'myapp': {'path': '../myapp'}}
        })
      ]).create();

      d.dir("bar", [
        d.pubspec({
          "name": "bar",
          "version": "1.0.0",
          "dependencies": {'foo': {'path': '../foo'}}
        }),
        d.dir("lib", [
          d.file("transformer.dart", dartTransformer('bar')),
        ])
      ]).create();

      d.dir("baz", [
        d.pubspec({
          "name": "baz",
          "version": "1.0.0",
          "transformers": ["bar/transformer"],
          "dependencies": {'bar': {'path': '../bar'}}
        })
      ]).create();

      d.dir(appPath, [
        d.pubspec({
          "name": "myapp",
          "dependencies": {'baz': {'path': '../baz'}}
        }),
        d.dir("lib", [
          d.file("transformer.dart", dartTransformer('myapp')),
        ])
      ]).create();

      createLockFile('myapp', sandbox: ['foo', 'bar', 'baz'], pkg: ['barback']);

      var process = startPubServe();
      process.shouldExit(1);
      process.stderr.expect(emitsLines(
          "Transformer cycle detected:\n"
          "  bar depends on foo\n"
          "  foo is transformed by myapp/transformer\n"
          "  myapp depends on baz\n"
          "  baz is transformed by bar/transformer"));
    });
  });
}