public async Task GetTest()
        {
            //Arrange
            using (var context = new AppDbContext(options))
            {
                var producer = new Producer {
                    Id = 1
                };
                var repo = new ProducerRepository(context);

                //Act
                var expectedResult = producer;
                context.Producers.Add(producer);
                var result = await repo.Get(producer.Id);

                //Assert
                Assert.AreEqual(expectedResult, result);
            }
        }