anchor.diff:  
       expect(await globals.fs.file('foo').readAsString(), testUri.toString());
       expect(fakeVmServiceHost.hasRemainingExpectations, false);
  -  }), overrides: <Type, Generator>{
  -    DevtoolsLauncher: () => mockDevtoolsLauncher,
  -  });
  +  }));
   
     testUsingContext('FlutterDevice uses dartdevc configuration when targeting web', () async {
       fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
  
positive.code: import 'package:file_testing/file_testing.dart';
  import 'package:flutter_tools/src/application_package.dart';
  import 'package:flutter_tools/src/artifacts.dart';
  import 'package:flutter_tools/src/base/command_help.dart';
  import 'package:flutter_tools/src/base/common.dart';
  import 'package:flutter_tools/src/base/dds.dart';
  
negative.code:       fs: anyNamed('fs'),
      )).called(1);
      expect(fakeVmServiceHost.hasRemainingExpectations, false);
    }));
  
    testUsingContext('ResidentRunner can attach to device successfully with --fast-start', () => testbed.run(() async {
      fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
  