public void Check_identity_succeed()
        {
            DateTime param1 = DateTime.UtcNow;
            string   param2 = "param2";
            string   param3 = "param3";
            DateTime param4 = DateTime.UtcNow;

            var entity = new InputInvoice()
            {
                InvoiceDate    = param1,
                InvoiceNumber  = param2,
                PartnerAccount = param3,
                JournalDate    = param4
            };

            entity.Identity().Should().Be($"{param1.ToShortDateString()}-{param4.ToShortDateString()}-{param2}-{param3}");
        }