Adding placeholder for low bandwidth audio test

webrtc/audio/test/low_bandwidth_audio_test.py

+#!/usr/bin/env python
+# 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.
+
+"""
+This script is the wrapper that runs the low-bandwidth audio test.
+
+After running the test, post-process steps for calculating audio quality of the
+output files will be performed.
+"""
+
+import argparse
+import logging
+import os
+import subprocess
+import sys
+
+
+SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
+SRC_DIR = os.path.normpath(os.path.join(SCRIPT_DIR, os.pardir, os.pardir,
+                                        os.pardir))
+
+
+def _RunCommand(argv, cwd=SRC_DIR, **kwargs):
+  logging.info('Running %r', argv)
+  subprocess.check_call(argv, cwd=cwd, **kwargs)
+
+
+def _ParseArgs():
+  parser = argparse.ArgumentParser(description='Run low-bandwidth audio tests.')
+  parser.add_argument('build_dir',
+      help='Path to the build directory (e.g. out/Release).')
+  args = parser.parse_args()
+  return args
+
+
+def main():
+  # pylint: disable=W0101
+  logging.basicConfig(level=logging.INFO)
+
+  args = _ParseArgs()
+
+  test_executable = os.path.join(args.build_dir, 'low_bandwidth_audio_test')
+  if sys.platform == 'win32':
+    test_executable += '.exe'
+
+  _RunCommand([test_executable])
+
+
+if __name__ == '__main__':
+  sys.exit(main())