def test_getNormal_negative_values(self): a = Vector(-3, -1, -2) c = a.getNormal() assert c.length() == 1
def test_getNormal_mixed_values(self): a = Vector(-2, 3, 0) c = a.getNormal() assert c.length() == 1
def test_getNormal_positive_values(self): a = Vector(1, 2, 3) c = a.getNormal() assert c.length() == 1