def test_class_constructor():
bbox = BBox.from_xywh(1, 1, 5, 5)
assert isinstance(bbox, BBox)
bbox = NormalizedBBox.from_xywh(0.1, 0.1, 0.5, 0.5)
assert isinstance(bbox, NormalizedBBox)
def test_from_xywh():
bbox = BBox.from_xywh(5, 6, 10, 30)
assert bbox.xmin == 5
assert bbox.xmax == 15
assert bbox.ymin == 6
assert bbox.ymax == 36