public void ChangeTest()
{
// Arrange
Catering catering = new Catering();
FileAccess file = new FileAccess();
file.LoadCateringItems(catering);
decimal amount = 10.00M;
string expected = "Your change is: 0 twenties, 1 tens, 0 fives, 0 ones, 0 quarters, 0 dimes, and 0 nickles. ";
// Act
string result = catering.Change(amount);
// Assert
Assert.AreEqual(expected, result);
}