class_docstr: Test transcoding from wav
class_docstr_tok: ["Test","transcoding","from","wav"]
docstr: Test conversion to wav
docstr_tok: ["Test","conversion","to","wav"]
code: def testWav(self):
      "Test conversion to wav"
      self.encoder_id = "wav_encoder"
  
imports: from __future__ import division
  from timeside.core.processor import get_processor, ProcessPipe
  from timeside.plugins.decoder.aubio import AubioDecoder
  import os
  import unittest
  from unit_timeside import TestRunner
  from tools import tmp_file_sink
  from timeside.core.tools.test_samples import samples
label_desc: Use image node_id 2 for calling the TestTranscodingFromWav obj's underlying member method code with example usage: obj.testWav() without return types