public void DigitalRoot_SmallNumber_ShouldReturnCorrectValue()
{
//arrange
var input = 16;
//act
var result = SumOfDigits.DigitalRoot(input);
//assert
result.Should().Be(7);
}
public void DigitalRoot_HalfMillion_ShouldReturnCorrectValue()
{
//arrange
var input = 493193;
//act
var result = SumOfDigits.DigitalRoot(input);
//assert
result.Should().Be(2);
}
public void DigitalRoot_OverHundredThousandNumber_ShouldReturnCorrectValue()
{
//arrange
var input = 132189;
//act
var result = SumOfDigits.DigitalRoot(input);
//assert
result.Should().Be(6);
}
public void DigitalRoot_ThreeDigitNumber_ShouldReturnCorrectValue()
{
//arrange
var input = 942;
//act
var result = SumOfDigits.DigitalRoot(input);
//assert
result.Should().Be(6);
}
public void Tests()
{
Assert.AreEqual(7, _num.DigitalRoot(16));
Assert.AreEqual(6, _num.DigitalRoot(456));
}
public static void SumOfDigits_NC(string[] args)
{
var output = SumOfDigits.DigitalRoot(157);
Console.WriteLine(output);
}