code: def test_decode_exif():
      """Test case for decode_exif."""
      jpeg_file = os.path.join(
          os.path.dirname(os.path.abspath(__file__)),
          "test_image",
          "down-mirrored.jpg",
      )
      exif = tfio.experimental.image.decode_jpeg_exif(
          tf.io.read_file(jpeg_file)
      )
      assert exif == 4
  
imports: import os
  import numpy
  import tensorflow
  import tensorflow_io
label_desc: Use image node_id 7 for calling a global function with example usage: test_decode_exif() without return types