def test_add_subtract(arrays):
array_point, array_vector = arrays
point = Point(array_point)
vector = Vector(array_vector)
point_2 = point + array_vector
assert math.isclose(point.distance_point(point_2), vector.norm())
point_3 = point_2 - array_vector
assert point.is_close(point_3)
def test_distance_points(array_a, array_b, dist_expected):
point_a = Point(array_a)
assert math.isclose(point_a.distance_point(array_b), dist_expected)