APM Quality Assessment, simulation controller and libraries

webrtc/modules/audio_processing/test/py_quality_assessment/test_simulation.py

Index: webrtc/modules/audio_processing/test/py_quality_assessment/test_simulation.py
diff --git a/webrtc/modules/audio_processing/test/py_quality_assessment/apm_quality_assessment-export.py b/webrtc/modules/audio_processing/test/py_quality_assessment/test_simulation.py
similarity index 56%
copy from webrtc/modules/audio_processing/test/py_quality_assessment/apm_quality_assessment-export.py
copy to webrtc/modules/audio_processing/test/py_quality_assessment/test_simulation.py
index 1b526c1b054918518b39370902d82a1fd53aff29..0f64a6af9733b6f3ab369d4c8d7947e0db86aa89 100644
--- a/webrtc/modules/audio_processing/test/py_quality_assessment/apm_quality_assessment-export.py
+++ b/webrtc/modules/audio_processing/test/py_quality_assessment/test_simulation.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
@@ -6,3 +5,15 @@
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
+
+import unittest
+
+import apm_quality_assessment
+
+class TestSimulationScript(unittest.TestCase):
+
+  def test_main(self):
+    # Exit with error code if no arguments are passed.
+    with self.assertRaises(SystemExit) as cm:
+      apm_quality_assessment.main()
+    self.assertGreater(cm.exception.code, 0)