public void FindNthRoot_numbernegative0008rootnegative3eps0001_negative02returned()
{
// Arrange.
double number = -0.008;
int root = -3;
double eps = 0.0001;
// Act.
MathAlgorithm.FindNthRoot(number, root, eps);
}
public void FindNthRoot_numbernegative0008root3eps00001_negative02returned()
{
// Arrange.
double number = -0.008;
int root = 3;
double eps = 0.0001;
double expected = -0.2000;
// Act.
double actual = MathAlgorithm.FindNthRoot(number, root, eps);
actual = Math.Round(actual, 4);
// Assert.
Assert.IsTrue(Math.Abs(expected - actual) < eps);
}
public void FindNthRoot_number1root5eps00001_1returned()
{
// Arrange.
double number = 1;
int root = 5;
double eps = 0.0001;
double expected = 1;
// Act.
double actual = MathAlgorithm.FindNthRoot(number, root, eps);
actual = Math.Round(actual, 4);
// Assert.
Assert.IsTrue(Math.Abs(actual - expected) < eps);
}
public void FindNthRoot_ThrowsArgumentException(double a, int n, double eps)
{
Assert.Throws <ArgumentException>(
() => MathAlgorithm.FindNthRoot(a, n, eps));
}
public void FindNthRoot(double a, int n, double eps)
{
Assert.IsTrue(Math.Abs(MathAlgorithm.FindNthRoot(a, n, eps) - Math.Pow(a, 1.0 / n)) < eps);
}
