def test_inside_box(ray_inside_box, unit_box):
hit, tmin, tmax = ray_box_intersect(ray_inside_box, unit_box)
assert hit
assert tmin < 0
assert tmax > 0
def test_should_hit(ray_that_hits, unit_box):
hit, tmin, tmax = ray_box_intersect(ray_that_hits, unit_box)
assert hit
assert tmin > 0
assert tmax > tmin
def test_should_miss(ray_that_misses, unit_box):
hit, tmin, tmax = ray_box_intersect(ray_that_misses, unit_box)
assert not hit
assert tmin == 0
assert tmax == 0