public async void GetByIdAsync_When_Called_Should_Return_Broker_including_Customers() { //Arrange SoftDbContext _context = new SoftDbContext(); var _brokerRepository = new BrokerRepository(_context); //Act var firstBrokerInRepository = _context.Brokers.FirstOrDefault(); Assert.NotNull(firstBrokerInRepository); var broker = await _brokerRepository.FindByIdAsync(firstBrokerInRepository.Id); //Assert Assert.NotEmpty(broker.Customers); }