public void VerifyGetMinArrayValue()
{
double[] doubleArray = { 2, 2, 3, 5, 18, 0, 33, 1.6, 33.3 };
//Assert.AreEqual(0, calc.GetMinArrayValue(doubleArray));
Assert.That(0, Is.LessThanOrEqualTo(calc.GetMinArrayValue(doubleArray)));
}