anchor.diff:      expect(response.statusCode, 200);
       expect(response.body, 'hello\n');
     });
  +
     test('404', () async {
       final response = await get(Uri.parse(host + '/foobar'));
       expect(response.statusCode, 404);
  
positive.code: dev_dependencies:
    http: ^0.13.0
    lints: ^1.0.0
    test_process: ^2.0.0
    test: ^1.15.0
  ''';
  
  
negative.code: ''';
  
  final String _test = r'''
  import 'dart:io';
  
  import 'package:http/http.dart';
  import 'package:test/test.dart';
  
  void main() {
    final port = '8080';
    final host = 'http://0.0.0.0:$port';
    late Process p;
  
    setUp(() async {
      p = await Process.start(
        'dart',
        ['run', 'bin/server.dart'],
        environment: {'PORT': port},
      );
      // Wait for server to start and print to stdout.
      await p.stdout.first;
    });
  
    tearDown(() => p.kill());
  
    test('Root', () async {
      final response = await get(Uri.parse(host + '/'));
  