public void StaticConstrainTest(double x, double y, double maximumLength)
{
var vector = new Vector2D(x, y);
var constrainedVector = Vector2D.Constrain(vector, maximumLength);
var minimumLength = System.Math.Min(maximumLength, constrainedVector.Length);
Assert.AreEqual(minimumLength, constrainedVector.Length, Helper.E);
}