public void Can_advance_ledger_period() { var coa = new ChartOfAccounts { CompanyId = 1 }; coa.AdvanceLedgerPeriod(); Assert.Equal(DateTime.Now.Year, coa.CurrentLedgerPeriodStartDate.Year); Assert.Equal(DateTime.Now.Month + 1, coa.CurrentLedgerPeriodStartDate.Month); }