public void Get() { // Arrange var id = service.Create(new Bill { organizationId = "", contactId = "", entryDate = DateTime.Now.ToString("yyyy-MM-dd"), state = "approved", taxMode = "incl", suppliersInvoiceNo = "", lines = new List <BillLine> { new BillLine { accountId = "", amount = 0, description = "", taxRateId = "" } } }); // Act var result = service.Get(id); // Assert Assert.IsNotNull(result); }