code: def test_data_item_create_img(img_2x2):
      img = img_2x2
      dc = slc.DataContainer((img,), "I")
      assert len(dc) == 1
      assert np.array_equal(img, dc[0][0])
      assert dc[0][1] == "I"
  
imports: import itertools
  import random
  import cv2
  import numpy
  import pytest
  import torch
  import solt.core
  import solt.transforms
  import solt.utils
  from .fixtures import *
label_desc: Use image node_id 9 for calling a global function with example usage: test_data_item_create_img(img_2x2) without return types