APM QA refactoring: render stream support, echo path simulation, new export engine

webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/echo_path_simulation_unittest.py

Index: webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/echo_path_simulation_unittest.py
diff --git a/webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/echo_path_simulation_unittest.py b/webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/echo_path_simulation_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..be7153ec6794394f72519afad6826467238cf043
--- /dev/null
+++ b/webrtc/modules/audio_processing/test/py_quality_assessment/quality_assessment/echo_path_simulation_unittest.py
@@ -0,0 +1,26 @@
+# Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# 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.
+
+"""Unit tests for the echo path simulation module.
+"""
+
+import unittest
+
+from . import echo_path_simulation
+
+
+class TestEvalScores(unittest.TestCase):
+  """Unit tests for the eval_scores module.
+  """
+
+  def testRegisteredClasses(self):
+    # Check that there is at least one registered echo path simulator.
+    registered_classes = (
+        echo_path_simulation.EchoPathSimulator.REGISTERED_CLASSES)
+    self.assertIsInstance(registered_classes, dict)
+    self.assertGreater(len(registered_classes), 0)