code: def test_get_shapely_box(self):
      x, y, width, height = 1, 1, 256, 256
      shapely_box = get_shapely_box(x, y, width, height)
  
      self.assertListEqual(
          shapely_box.exterior.coords.xy[0].tolist(),
          [257.0, 257.0, 1.0, 1.0, 257.0],
      )
      self.assertEqual(shapely_box.area, 65536)
      self.assertTupleEqual(shapely_box.bounds, (1, 1, 257, 257))
  
file_path: sahi/tests/test_shapelyutils.py
imports: import unittest
  from sahi.utils.shapely import MultiPolygon, ShapelyAnnotation, get_shapely_box, get_shapely_multipolygon
label_desc: Use image node_id 1 for calling the TestShapelyUtils obj's underlying member method code with example usage: obj.test_get_shapely_box() without return types