src/build/android/pylib/perf/perf_control_unittest.py

   1 # Copyright 2014 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4 # pylint: disable=W0212
   5
   6 import os
   7 import sys
   8 import unittest
   9
  10 sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir, os.pardir))
  11
  12 from pylib import android_commands
  13 from pylib.device import device_utils
  14 from pylib.perf import perf_control
  15
  16 class TestPerfControl(unittest.TestCase):
  17   def setUp(self):
  18     if not os.getenv('BUILDTYPE'):
  19       os.environ['BUILDTYPE'] = 'Debug'
  20
  21     devices = android_commands.GetAttachedDevices()
  22     self.assertGreater(len(devices), 0, 'No device attached!')
  23     self._device = device_utils.DeviceUtils(
  24         android_commands.AndroidCommands(device=devices[0]))
  25
  26   def testHighPerfMode(self):
  27     perf = perf_control.PerfControl(self._device)
  28     try:
  29       perf.SetPerfProfilingMode()
  30       for cpu in range(perf._NumCpuCores):
  31         path = perf_control.PerfControl._CPU_ONLINE_FMT % cpu
  32         self.assertEquals('1',
  33                           self._device.old_interface.GetFileContents(path)[0])
  34         path = perf_control.PerfControl._SCALING_GOVERNOR_FMT % cpu
  35         self.assertEquals('performance',
  36                           self._device.old_interface.GetFileContents(path)[0])
  37     finally:
  38       perf.SetDefaultPerfMode()
  39
  40 if __name__ == '__main__':
  41   unittest.main()