Fix CPU and memory perf PyAuto test running on av_perf.

chrome/test/functional/media/media_cpu_perf.py

+#!/usr/bin/env python
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""CPU and memory test performance for <video>.
+
+Calculates CPU and memory statistics while playing videos with different
+resolutions.
+"""
+
+import logging
+import os
+import psutil
+
+import pyauto_media
+import pyauto
+import pyauto_utils
+
+# HTML test path; relative to src/chrome/test/data.
+_TEST_HTML_PATH = os.path.join('media', 'html', 'media_cpu_perf.html')
+
+# Path under data path for test files.
+_TEST_MEDIA_PATH = os.path.join('pyauto_private', 'media', 'crowd')
+
+# The media files used for testing. The map is from the media file type to short
+# file names. A perf graph is generated for each file type.
+_TEST_VIDEOS = {
+    'webm': ['crowd2160', 'crowd1080', 'crowd720', 'crowd480', 'crowd360']
+}
+
+
+class MediaFPSPerfTest(pyauto.PyUITest):

[DaleCurtis, 2012/02/24 17:02:24]

CPUTest?

+  """PyAuto test container.  See file doc string for more information."""
+
+  def _GetChromeRendererProcess(self):
+    """Returns the Chrome renderer process."""
+    renderer_id = self.GetBrowserInfo()['windows'][0]['tabs'][1]['renderer_pid']
+    if not renderer_id:
+      self.fail('Can not find the tab renderer process.')
+    return psutil.Process(renderer_id)
+
+  def testMediaCPUandMemoryPerformance(self):
+    """Launches HTML test which plays each video and records CPU usage.
+
+    For each video, the test plays the video and records percentage of
+    CPU and memory used by the chrome renderer process.
+    """
+    for ext, files in _TEST_VIDEOS.iteritems():
+      for name in files:
+        # Append a tab and delete it at the end of the test to free its memory.
+        self.AppendTab(pyauto.GURL(self.GetFileURLForDataPath(_TEST_HTML_PATH)))
+
+        renderer_process = self._GetChromeRendererProcess()
+        file_url = self.GetFileURLForDataPath(
+            os.path.join(_TEST_MEDIA_PATH, '%s.%s' % (name, ext)))
+        logging.debug('Running CPU perf test for %s.', file_url)
+
+        # Call to set a starting time to record CPU usage by the renderer.
+        renderer_process.get_cpu_percent()
+
+        self.assertTrue(
+            self.CallJavascriptFunc('startTest', [file_url], tab_index=1))
+        cpu_usage = renderer_process.get_cpu_percent()
+        mem_usage = renderer_process.get_memory_info()[0] / 1024
+        pyauto_utils.PrintPerfResult('CPU_' + ext, name, cpu_usage, '%')
+        pyauto_utils.PrintPerfResult('Memory_' + ext, name, mem_usage, 'KB')
+
+        self.GetBrowserWindow(0).GetTab(1).Close(True)
+
+
+if __name__ == '__main__':
+  pyauto_media.Main()