public static void PerfectNumberShouldThrowEx(int number)
{
// Arrange
// Assert
Assert.Throws <ArgumentException>(() => Aliquot.AliquotSum(number));
}
public static void AliquotSumWork(int number, int expectedAS)
{
// Arrange
// Act
var result = Aliquot.AliquotSum(number);
// Assert
Assert.AreEqual(result, expectedAS);
}