Added interactive parameter mixing test

Author: cwoffenden

test/test_interactive.py

@@ -334,6 +334,13 @@ def test_audio_worklet_2x_hard_pan_io(self):
     shutil.copy(test_file('webaudio/audio_files/emscripten-bass-mono.mp3'), 'audio_files/')
     self.btest_exit('webaudio/audioworklet_2x_in_hard_pan.c', args=['-sAUDIO_WORKLET', '-sWASM_WORKERS'])
 
+  # Tests an AudioWorklet with multiple stereo inputs mixing in the processor via a parameter to a single stereo output
+  def test_audio_worklet_params_mixing(self):
+    os.mkdir('audio_files')
+    shutil.copy(test_file('webaudio/audio_files/emscripten-beat.mp3'), 'audio_files/')
+    shutil.copy(test_file('webaudio/audio_files/emscripten-bass.mp3'), 'audio_files/')
+    self.btest_exit('webaudio/audioworklet_params_mixing.c', args=['-sAUDIO_WORKLET', '-sWASM_WORKERS'])
+
   # Same as 'test_audio_worklet_2x_stereo_io' but with the worklet stack starting at 2GB in (tests for unsigned shifts in the memory offsets)
   def test_audio_worklet_stereo_io_2gb(self):
     os.mkdir('audio_files')