code: def test_CompositeAudioClip_by__init__():
      """The difference between the CompositeAudioClip returned by
      ``concatenate_audioclips`` and a CompositeAudioClip created using the class
      directly, is that audios in ``concatenate_audioclips`` are played one after
      other and AudioClips passed to CompositeAudioClip can be played at different
      times, it depends on their ``start`` attributes.
      """
      frequencies = [440, 880, 1760]
      durations = [2, 5, 1]
      fpss = [44100, 22050, 11025]
      starts = [0, 1, 2]
  
      clips = [
          AudioClip(
              lambda t: [np.sin(frequency * 2 * np.pi * t)],
              duration=duration,
              fps=fps,
          ).with_start(start)
          for frequency, duration, fps, start in zip(
              frequencies, durations, fpss, starts
          )
      ]
  
      compound_clip = CompositeAudioClip(clips)
  
      # should return a CompositeAudioClip
      assert isinstance(compound_clip, CompositeAudioClip)
  
      # fps of the greatest fps passed into it
      assert compound_clip.fps == 44100
  
      # duration depends on clips starts and durations
      ends = [
          start + duration for start, duration in zip(starts, durations)
      ]
      assert compound_clip.duration == max(ends)
      assert list(compound_clip.ends) == ends
      assert list(compound_clip.starts) == starts
  
      # channels are maximum number of channels of the clips
      assert compound_clip.nchannels == max(
          clip.nchannels for clip in clips
      )
  
file_path: moviepy/tests/test_AudioClips.py
imports: import os
  import numpy
  import pytest
  from moviepy.audio.AudioClip import AudioArrayClip, AudioClip, CompositeAudioClip, concatenate_audioclips
  from moviepy.audio.io.AudioFileClip import AudioFileClip
label_desc: Use image node_id 5 for calling a global function with example usage: test_CompositeAudioClip_by__init__() without return types