public void testAddPayFacCredit() { payFacCredit payFacCredit = new payFacCredit(); payFacCredit.fundingSubmerchantId = "123456"; payFacCredit.fundsTransferId = "123467"; payFacCredit.amount = 107L; batchRequest.addPayFacCredit(payFacCredit); Assert.AreEqual(1, batchRequest.getNumPayFacCredit()); Assert.AreEqual(107L, batchRequest.getPayFacCreditAmount()); mockLitleFile.Verify(litleFile => litleFile.createRandomFile(It.IsAny<String>(), It.IsAny<String>(), It.IsAny<String>(), mockLitleTime.Object)); mockLitleFile.Verify(litleFile => litleFile.AppendLineToFile(mockFilePath, payFacCredit.Serialize())); }