public void CutToMaxLengthTest(double x, double y, double expectedX, double expectedY, double maxLength)
{
var vector = new Vector2D(x, y);
var result = vector.CutToMaxLength(maxLength);
Assert.AreEqual(expectedX, result.X, 0.0001);
Assert.AreEqual(expectedY, result.Y, 0.0001);
}