Write tests

[junhoyeo]

• Start by writing unit tests for https://github.com/junhoyeo/BetterOCR/blob/main/betterocr/parsers.py
• And also

  BetterOCR/betterocr/detect.py

  Lines 171 to 183 in 618d7be

  	for idx, item in enumerate(items):
  	box = item["box"]
  	# [x,y,w,h]
  	if len(box) == 4 and isinstance(box[0], int):
  	rect = rectangle_corners(box)
  	items[idx]["box"] = rect
  	# [[x,y],[w,h]]
  	elif len(box) == 2 and isinstance(box[0], list) and len(box[0]) == 2:
  	flattened = [i for sublist in box for i in sublist]
  	rect = rectangle_corners(flattened)
  	items[idx]["box"] = rect