remove code-transformers from the repo

pkg/code_transformers/test/assets_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.
-
-library code_transformers.test.assets_test;
-
-import 'dart:async';
-
-import 'package:barback/barback.dart';
-import 'package:code_transformers/assets.dart';
-import 'package:code_transformers/tests.dart';
-import 'package:unittest/compact_vm_config.dart';
-import 'package:unittest/unittest.dart';
-
-main() {
-  useCompactVMConfiguration();
-
-
-  void testAssetUri(String name,
-      {AssetId source, String uri, AssetId result, String message,
-      bool errorOnAbsolute: true}) {
-    test(name, () {
-      var transformer = new Validator((transform) {
-      var assetId = uriToAssetId(source, uri, transform.logger, null,
-          errorOnAbsolute: errorOnAbsolute);
-        expect(assetId, result);
-      });
-      var messages = [];
-      if (message != null) messages.add(message);
-
-      return applyTransformers(
-            [[transformer]],
-            inputs: {
-              source.toString(): ''
-            },
-            messages: messages);
-    });
-  }
-
-  group('uriToAssetId', () {
-    testAssetUri('resolves relative URIs',
-        source: new AssetId('a', 'web/main.dart'),
-        uri: 'foo.dart',
-        result: new AssetId('a', 'web/foo.dart'));
-
-    testAssetUri('resolves package: URIs',
-        source: new AssetId('a', 'web/main.dart'),
-        uri: 'package:foo/foo.dart',
-        result: new AssetId('foo', 'lib/foo.dart'));
-
-    testAssetUri('resolves package: URIs from libs',
-        source: new AssetId('a', 'lib/main.dart'),
-        uri: 'package:foo/foo.dart',
-        result: new AssetId('foo', 'lib/foo.dart'));
-
-    testAssetUri('resolves packages paths',
-        source: new AssetId('a', 'web/main.dart'),
-        uri: 'packages/foo/foo.dart',
-        result: new AssetId('foo', 'lib/foo.dart'));
-
-    testAssetUri('resolves relative packages paths',
-        source: new AssetId('a', 'web/main.dart'),
-        uri: 'packages/foo/foo.dart',
-        result: new AssetId('foo', 'lib/foo.dart'));
-
-    testAssetUri('does not allow packages from non-dart lib files',
-        source: new AssetId('a', 'lib/index.html'),
-        uri: 'packages/foo/bar',
-        message: 'warning: Invalid URL to reach to another package: '
-            'packages/foo/bar. Path reaching to other packages must first '
-            'reach up all the way to the packages directory. For example, try '
-            'changing the URL to: ../../packages/foo/bar');
-
-    testAssetUri('allows relative packages from non-dart lib files',
-        source: new AssetId('a', 'lib/index.html'),
-        uri: '../../packages/foo/bar',
-        result: new AssetId('foo', 'lib/bar'));
-
-    testAssetUri('does not allow package: imports from non-dart files',
-        source: new AssetId('a', 'lib/index.html'),
-        uri: 'package:foo/bar.dart',
-        message: 'warning: absolute paths not allowed: "package:foo/bar.dart"');
-
-    testAssetUri('does not allow absolute /packages by default',
-        source: new AssetId('a', 'lib/index.html'),
-        uri: '/packages/foo/bar.dart',
-        message:
-            'warning: absolute paths not allowed: "/packages/foo/bar.dart"');
-
-    testAssetUri('can suppress error on absolute /packages ',
-        source: new AssetId('a', 'lib/index.html'),
-        uri: '/packages/foo/bar.dart',
-        errorOnAbsolute: false,
-        result: null);
-  });
-}
-
-class Validator extends Transformer {
-  final Function validation;
-
-  Validator(this.validation);
-
-  Future apply(Transform transform) {
-    return new Future.value(validation(transform));
-  }
-}