def test_point_radius_property():
p = Point(1, 1)
r = math.hypot(1, 1)
assert p.radius == r
p.radius *= 3
# XXX epsilons are biting me here.
assert round(p.radius, 13) == round(3 * r, 13)
p.radius = 0
assert p.radius == 0 and p.is_origin
def test_point_from_polar_not_origin_all_quadrants(x, y):
radius = math.hypot(x, y)
radians = math.atan2(y, x)
degrees = math.degrees(radians)
p = Point.from_polar(radius, radians)
q = Point.from_polar(radius, degrees, is_radians=False)
i = Point()
i.radius = radius
i.radians = radians
j = Point()
j.radius = radius
j.degrees = degrees
assert p.x == x and p.y == y
assert q.x == x and q.y == y
assert i.x == x and i.y == y
assert j.x == x and j.y == y
assert p == q == i == j
