code: def fixture_decode_aac():
      """fixture_decode_aac"""
      path = os.path.join(
          os.path.dirname(os.path.abspath(__file__)),
          "test_audio",
          "gs-16b-2c-44100hz.mp4",
      )
      content = tf.io.read_file(path)
  
      # The test file gs-16b-2c-44100hz.wav is generated from the
      # method itself on macOS so it is not exactly a good test.
      # However, the manual playing of the file has been largely
      # match so we consider it ok.
      wav_path = os.path.join(
          os.path.dirname(os.path.abspath(__file__)),
          "test_audio",
          "gs-16b-2c-44100hz.ffmpeg.wav"
          if sys.platform == "linux"
          else "gs-16b-2c-44100hz.wav",
      )
      value = tfio.audio.decode_wav(
          tf.io.read_file(wav_path), dtype=tf.int16
      )
  
      args = content
  
      def func(e):
          delta = tf.constant(2.0, tf.float32)
          v = tfio.audio.decode_aac(e)
          v = tf.cast(v * (1 << 15), tf.int16)
          v = tf.cast(v, tf.float32) - tf.cast(value, tf.float32)
          v = tf.math.logical_and(
              tf.math.less(v, delta), tf.math.greater(v, -delta)
          )
          return v
  
      expected = tf.ones_like(value, tf.bool)
  
      return args, func, expected
  
imports: import os
  import sys
  import pytest
  import numpy
  import tensorflow
  import tensorflow_io
label_desc: Use image node_id 24 for calling a global function with example usage: fixture_decode_aac() and returns: args,  func,  expected, v