public void FindNthRoot_PowerIsNegariveNumber_ThrowsArgumentException(double number, int power, double epsilon)
 {
     Assert.Throws <ArgumentException>(() => RealNumberOperations.FindNthRoot(number, power, epsilon));
 }
        public void FindNthRoot_PositiveResultsTests(double number, int power, double epsilon, double expected)
        {
            double actual = RealNumberOperations.FindNthRoot(number, power, epsilon);

            Assert.AreEqual(expected, actual, epsilon);
        }
 public void FindNthRoot_IncorrectEpsilon_ThrowsArgumentException(double number, int power, double epsilon)
 {
     Assert.Throws <ArgumentException>(() => RealNumberOperations.FindNthRoot(number, power, epsilon));
 }