public void CalculateCoinBreakdown_WithNegativeCents()
{
// arrange
// act
var results = CoinCalculator.CalculateCoinBreakdown(-16);
// assert
Assert.Empty(results);
}
public void CalculateCoinBreakdown_WithValidCents(
int initialCents,
int expectedQuarters,
int expectedDimes,
int expectedNickels,
int expectedPennies)
{
// arrange
// act
var results = CoinCalculator.CalculateCoinBreakdown(initialCents);
// assert
Assert.Equal(4, results.Count);
Assert.Equal(expectedQuarters, results.First(p => p.Type == CoinType.Quarter).Amount);
Assert.Equal(expectedDimes, results.First(p => p.Type == CoinType.Dime).Amount);
Assert.Equal(expectedNickels, results.First(p => p.Type == CoinType.Nickel).Amount);
Assert.Equal(expectedPennies, results.First(p => p.Type == CoinType.Penny).Amount);
}
public void Convert()
{
try
{
ErrorMessage = null;
if (string.IsNullOrEmpty(DollarValue))
{
throw new FormatException();
}
Cents = CalculateCents(DollarValue);
CoinResults = CoinCalculator.CalculateCoinBreakdown(Cents);
}
catch
{
ErrorMessage = "The dollar value must be a valid number between 0.00 and 1000.00.";
CoinResults.Clear();
}
}
