public async Task TryToGetACustomerThatNotExists()
        {
            // Retrieve DbContext
            var context = ApplicationDbContextInMemory.Get();
            ICustomerQueryService queryService = new CustomerQueryService(context, GetIlogger);

            // Test customer
            var testCustomerId = 99999999;

            // Retrieve the new record by USD code
            var record = await queryService.GetAsync(testCustomerId);

            // Check
            Assert.IsNull(record);
        }