public ViewResult ProcessFile(HttpPostedFileBase cashRegisterFile)
{
// Would be a good idea to add a token or some sort of verification to prevent abuse if this method is publicly accessible
string fileContents = cashRegisterFile.ToAsciiString();
IEnumerable <CashRegisterRecord> results = _business.ProcessFile(fileContents);
return(View("Results", results));
}
public void TestCalculateChangeOneOfEach()
{
// Test each USD denomination
CashRegisterBusiness business = new CashRegisterBusiness();
IEnumerable <CashRegisterRecord> records = business.ProcessFile("13.58, 200.00");
Assert.AreEqual(186.42m, records.First().Change);
Assert.AreEqual("1 hundred-dollar bill, 1 fifty-dollar bill, 1 twenty-dollar bill, 1 ten-dollar bill, 1 five-dollar bill, 1 dollar, 1 quarter, 1 dime, 1 nickel, 2 pennies", records.First().ChangeText);
}
public void TestCalculateChangePlural()
{
// Test plural nouns
CashRegisterBusiness business = new CashRegisterBusiness();
IEnumerable <CashRegisterRecord> records = business.ProcessFile("1.88, 4.00");
Assert.AreEqual(2.12m, records.First().Change);
Assert.AreEqual("2 dollars, 1 dime, 2 pennies", records.First().ChangeText);
}
public void TestCalculateChange1Penny()
{
// Regular test - one penny
CashRegisterBusiness business = new CashRegisterBusiness();
IEnumerable <CashRegisterRecord> records = business.ProcessFile("1.99, 2.00");
Assert.AreEqual(0.01m, records.First().Change);
Assert.AreEqual("1 penny", records.First().ChangeText);
}
public void TestCalculateChangeNoChange()
{
// Edge case - no change
CashRegisterBusiness business = new CashRegisterBusiness();
IEnumerable <CashRegisterRecord> records = business.ProcessFile("1.00, 1.00");
Assert.AreEqual(0, records.First().Change);
Assert.AreEqual("No change", records.First().ChangeText);
}
public void TestCalculateChangeDivisibleBy3()
{
// Test client's request
// If amount owed is divisible by 3, generate the change denominations randomly
CashRegisterBusiness business = new CashRegisterBusiness();
IEnumerable <CashRegisterRecord> records = business.ProcessFile("5.52, 10.00");
Assert.AreEqual(4.48m, records.First().Change);
Assert.AreNotEqual("4 dollars, 1 quarter, 2 dimes, 3 pennies", records.First().ChangeText); // This exact scenario is not likely
}