public void Write_A_Year_Worth_Of_Salary_Data()
{
var printer = new MockPrinter();
var planner = new Planner(printer);
var salaryStartDate = new YearAndMonth(2012, 01);
var salaryIncomeStream = new SalaryIncomeStream(salaryStartDate, 2000, "Bob's salary");
planner.AddIncomeStream(salaryIncomeStream);
var plannerStartDate = new YearAndMonth(2012, 04);
var plannerEndDate = new YearAndMonth(2012, 06);
planner.Plan(plannerStartDate, plannerEndDate);
Assert.Equal(12, printer.GetPrintCount());
Assert.Equal("2020-04", printer.GetNextPrintedLine());
Assert.Equal("Income: Bob's salary", printer.GetNextPrintedLine());
Assert.Equal("Amount: 2000", printer.GetNextPrintedLine());
Assert.Equal("Cash in bank: 2000", printer.GetNextPrintedLine());
Assert.Equal("2020-05", printer.GetNextPrintedLine());
Assert.Equal("Income: Bob's salary", printer.GetNextPrintedLine());
Assert.Equal("Amount: 2000", printer.GetNextPrintedLine());
Assert.Equal("Cash in bank: 4000", printer.GetNextPrintedLine());
Assert.Equal("2020-06", printer.GetNextPrintedLine());
Assert.Equal("Income: Bob's salary", printer.GetNextPrintedLine());
Assert.Equal("Amount: 2000", printer.GetNextPrintedLine());
Assert.Equal("Cash in bank: 6000", printer.GetNextPrintedLine());
}
