public void WhenGenerateReportCalled_ThenCreateReportPage() { var letterGenerator = new LetterGenerator(config.Object, aspose.Object); var voucher = TestData_VoucherInfo(); var letter = new AdjustmentLetter { AdjustedVoucher = voucher }; letter.Vouchers.Add(voucher); var pdf = new Document(); var count = pdf.Pages.Count; letterGenerator.AddTransactionReport(pdf, letter); Assert.AreEqual(count + 1, pdf.Pages.Count); }