def test_euclidean_dist_squared() -> None:
"""
Tests if euclidean_dist_squared works correctly.
"""
point_1 = Point(x=3, y=4)
point_2 = Point(x=0, y=0)
point_3 = Point(x=3, y=0)
point_4 = Point(x=6, y=4)
assert point_1.euclidean_dist_squared(point_1) == 0
assert point_1.euclidean_dist_squared(point_2) == 25
assert point_1.euclidean_dist_squared(point_3) == 16
assert point_1.euclidean_dist_squared(point_4) == 9
def _radial_key(_point: Point):
"""
Defines comparison key for sorting.
Args:
_point: Some point.
Returns: Euclidean distance from starting point.
"""
return _point.euclidean_dist_squared(start_point)
