tools/perf/measurements/repaint_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
   5 from telemetry import decorators
   6 from telemetry.page import page as page_module
   7 from telemetry.testing import options_for_unittests
   8 from telemetry.testing import page_test_test_case
   9 from telemetry.util import wpr_modes
  10
  11 from measurements import smoothness
  12 from page_sets import repaint_helpers
  13
  14
  15 class TestRepaintPage(page_module.Page):
  16   def __init__(self, page_set, base_dir):
  17     super(TestRepaintPage, self).__init__('file://blank.html',
  18                                           page_set, base_dir)
  19
  20   def RunPageInteractions(self, action_runner):
  21     repaint_helpers.Repaint(action_runner)
  22
  23
  24 class RepaintUnitTest(page_test_test_case.PageTestTestCase):
  25   """Smoke test for repaint measurement
  26
  27      Runs repaint measurement on a simple page and verifies
  28      that all metrics were added to the results. The test is purely functional,
  29      i.e. it only checks if the metrics are present and non-zero.
  30   """
  31
  32   def setUp(self):
  33     self._options = options_for_unittests.GetCopy()
  34     self._options.browser_options.wpr_mode = wpr_modes.WPR_OFF
  35
  36   @decorators.Disabled('chromeos')  # crbug.com/483212
  37   def testRepaint(self):
  38     ps = self.CreateEmptyPageSet()
  39     ps.AddStory(TestRepaintPage(ps, ps.base_dir))
  40     measurement = smoothness.Repaint()
  41     results = self.RunMeasurement(measurement, ps, options=self._options)
  42     self.assertEquals(0, len(results.failures))
  43
  44     frame_times = results.FindAllPageSpecificValuesNamed('frame_times')
  45     self.assertEquals(len(frame_times), 1)
  46     self.assertGreater(frame_times[0].GetRepresentativeNumber(), 0)
  47
  48     mean_frame_time = results.FindAllPageSpecificValuesNamed('mean_frame_time')
  49     self.assertEquals(len(mean_frame_time), 1)
  50     self.assertGreater(mean_frame_time[0].GetRepresentativeNumber(), 0)
  51
  52     frame_time_discrepancy = results.FindAllPageSpecificValuesNamed(
  53         'frame_time_discrepancy')
  54     self.assertEquals(len(frame_time_discrepancy), 1)
  55     self.assertGreater(frame_time_discrepancy[0].GetRepresentativeNumber(), 0)
  56
  57     percentage_smooth = results.FindAllPageSpecificValuesNamed(
  58         'percentage_smooth')
  59     self.assertEquals(len(percentage_smooth), 1)
  60     self.assertGreaterEqual(percentage_smooth[0].GetRepresentativeNumber(), 0)
  61
  62     # Make sure that we don't have extra timeline based metrics that are not
  63     # related to smoothness.
  64     mainthread_jank = results.FindAllPageSpecificValuesNamed(
  65         'responsive-total_big_jank_thread_time')
  66     self.assertEquals(len(mainthread_jank), 0)
  67
  68   @decorators.Disabled('android')
  69   def testCleanUpTrace(self):
  70     self.TestTracingCleanedUp(smoothness.Repaint, self._options)