public void TestModule()
{
double[] TV = { 2.0, 3.0, 4.0 }; //TesVar
vector vec = new vector(TV);
double actual = vec.Module();
double expected = Math.Sqrt(Math.Pow(TV[0], 2) + Math.Pow(TV[1], 2) + Math.Pow(TV[2], 2));
Assert.AreEqual(expected, actual);
}