public void SqrtYTest(double first, double second, double expected)
{
ICalculator calculator = new SqrtY();
double result = calculator.Calculate(first, second);
Assert.AreEqual(expected, result);
}
public void NegativeYTest()
{
ICalculator calculator = new SqrtY();
Assert.Throws<ArgumentException>(() => calculator.Calculate(-4, 2));
}