public override void Context()
            {
                CommandExecutor.initialize_with(new Lazy<IFileSystem>(() => fileSystem.Object), () => process.Object);

                service = new AutomaticUninstallerService(packageInfoService.Object, fileSystem.Object, registryService.Object, commandExecutor.Object);
                service.WaitForCleanup = false;
                config.Features.AutoUninstaller = true;
                config.PromptForConfirmation = false;
                package.Setup(p => p.Id).Returns("regular");
                package.Setup(p => p.Version).Returns(new SemanticVersion("1.2.0"));
                packageResult = new PackageResult(package.Object, null);
                packageInformation = new ChocolateyPackageInformation(package.Object);
                registryKeys.Add(new RegistryApplicationKey
                    {
                        InstallLocation = @"C:\Program Files (x86)\WinDirStat",
                        UninstallString = originalUninstallString,
                        HasQuietUninstall = true,
                        KeyPath = @"HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinDirStat",
                        InstallerType = installerType.InstallerType,
                    });
                packageInformation.RegistrySnapshot = new Registry("123", registryKeys);
                packageInfoService.Setup(s => s.get_package_information(package.Object)).Returns(packageInformation);
                packageResults.GetOrAdd("regular", packageResult);

                fileSystem.Setup(f => f.directory_exists(registryKeys.FirstOrDefault().InstallLocation)).Returns(true);
                registryService.Setup(r => r.installer_value_exists(registryKeys.FirstOrDefault().KeyPath, ApplicationParameters.RegistryValueInstallLocation)).Returns(true);
                fileSystem.Setup(f => f.get_full_path(expectedUninstallString)).Returns(expectedUninstallString);
            }

            public override void Context()
            {
                base.Context();
                _contextPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "infrastructure", "filesystem");
                _theLockedFile = Path.Combine(_contextPath, "Slipsum.txt");
                _packageResult = new PackageResult("bob", "1.2.3", FileSystem.get_directory_name(_theLockedFile));

                _fileStream = new FileStream(_theLockedFile, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None);
            }

 public override void Context()
 {
     base.Context();
     packageResult = new PackageResult("bob", "1.2.3", installDirectory);
  
     FileSystem.Setup(x => x.get_files(ApplicationParameters.PackagesLocation + "\\bob", It.IsAny<string>(), SearchOption.AllDirectories)).Returns(files);
     HashProvider.Setup(x => x.hash_file(It.IsAny<string>())).Returns("yes");
 }

 public override void Because()
 {
     Results = Service.upgrade_run(Configuration);
     _packageResult = Results.FirstOrDefault().Value;
 }

 public override void Because()
 {
     MockLogger.LogMessagesToConsole = true;
     Results = Service.uninstall_run(Configuration);
     _packageResult = Results.FirstOrDefault().Value;
 }