void GivenAnApplicationDirectoryContainingAppFiles()
{
_installedVersion = new Version(1, 0);
_builder = new AppUpdaterBuilder(TestConstants.AppPackageId)
.SetupWithTestValues(_installedVersion);
_fileSystem = _builder.GetMockFileSystem();
_appFiles = new[] { "app.exe", "app.exe.config", "nuget.dll", "data.db", "content\\logo.png" };
foreach (var file in _appFiles)
_fileSystem.AddFile(Path.Combine(AppDirectory, file), MockFileContent(file, _installedVersion));
}