public async System.Threading.Tasks.Task Test_GetGroups_NonExistingUser() { var dbContext = DbContextMocker.GetTaskItDbContext(nameof(Test_GetGroups_NonExistingUser)); var loggerFactory = LoggerFactory.Create(builder => { builder .AddFilter("Microsoft", LogLevel.Warning) .AddFilter("System", LogLevel.Warning) .AddFilter("LoggingConsoleApp.Program", LogLevel.Debug) .AddConsole() .AddEventLog(); }); var groupRepository = new GroupRepository(dbContext, loggerFactory.CreateLogger <IGroupRepository>()); IEnumerable <Group> result = groupRepository.FindAllGroupOfUser(nonExistingUserId); Assert.Empty(result); }