def test_rectangle_intersection():
r_large = Rectangle.from_list([0, 0, 5, 5])
r_small = Rectangle.from_list([1, 1, 2, 2])
r_touching = Rectangle.from_list([0, 0, 4, 5])
r_other = Rectangle.from_list([-3, -3, -1, -1])
assert Rectangle.intersection([r_other, r_touching]) == Rectangle.empty()
assert Rectangle.intersection([r_large, r_small]) == r_small
assert Rectangle.intersection([r_large, r_large]) == r_large
int1 = Rectangle.intersection(
[Rectangle.from_list([0, 0, 2, 2]),
Rectangle.from_list([0, 2, 1, 3])])
assert int1 == Rectangle.from_list([0, 2, 1, 2])
assert int1 != Rectangle.empty()
assert Rectangle.intersection([r_other,
Rectangle.empty()]) == Rectangle.empty()
with pytest.raises(ValueError):
Rectangle.intersection([])
with pytest.raises(ValueError):
Rectangle.intersection([Rectangle.empty()])
def test_rectangle_resized():
d = 3
r = Rectangle.from_list([1, 2, 6, 7])
R = r.resized(delta=d)
assert R.area == 2 * d * (r.width + r.height + 2 * d) + r.area
assert R.contains(r)
assert Rectangle.intersection([R, r]) == r
assert Rectangle.bounding_box([R, r]) == R
with pytest.raises(AssertionError):
_ = r.resized(delta=-6)
assert r.resized(delta=-r.width / 2) == Rectangle(r.center, r.center)
