code: def test_decode_jp2():
      """Test case for decode_jp2"""
      filename = os.path.join(
          os.path.dirname(os.path.abspath(__file__)),
          "test_image",
          "Jelly-Beans.jp2",
      )
      png_filename = os.path.join(
          os.path.dirname(os.path.abspath(__file__)),
          "test_image",
          "Jelly-Beans.jp2.png",
      )
      png = tf.image.decode_png(tf.io.read_file(png_filename))
  
      contents = tf.io.read_file(filename)
      rgb = tfio.experimental.image.decode_jp2(contents)
      assert rgb.dtype == tf.uint8
      assert rgb.shape == png.shape
      assert np.all(rgb == png)
  
imports: import os
  import numpy
  import tensorflow
  import tensorflow_io
label_desc: Use image node_id 15 for calling a global function with example usage: test_decode_jp2() without return types