anchor.diff:  // Copyright (c) 2021, 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.
  -
  -// @dart=2.10
   
   import 'dart:convert';
   import 'dart:io';
  
positive.code:           customBuildDirectoryPath: devtoolsAppUri(prefix: '../../../'),
          ),
        );
        expect(dds.isRunning, true);
  
        final client = HttpClient();
  
        // Check that Observatory assets are accessible.
        final observatoryRequest = await client.getUrl(dds.uri);
        final observatoryResponse = await observatoryRequest.close();
        expect(observatoryResponse.statusCode, 200);
        final observatoryContent =
  
negative.code: // Regression test for https://github.com/dart-lang/sdk/issues/45933.
  
  void main() {
    Process? process;
    DartDevelopmentService? dds;
  
    setUp(() async {
      // We don't care what's actually running in the target process for this
  