public void ModulusValidInput(int initial, int x, int expected)
{
ICalculator calculator = new Calculator();
calculator.Add(initial);
calculator.Modulus(x);
Assert.Equal(expected, calculator.Result);
}
public void ModulusDivideByZeroException()
{
ICalculator calculator = new Calculator();
calculator.Add(5);
var e = Assert.Throws <DivideByZeroException>(() =>
{
calculator.Modulus(0);
});
Assert.True(e.Message == "Zero division by modulus.");
}