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 measurements import repaint
   6 from telemetry.core import wpr_modes
   7 from telemetry.page import page as page_module
   8 from telemetry.unittest_util import options_for_unittests
   9 from telemetry.unittest_util import page_test_test_case
  10 from telemetry.unittest_util import test
  11
  12
  13 class TestRepaintPage(page_module.Page):
  14   def __init__(self, page_set, base_dir):
  15     super(TestRepaintPage, self).__init__('file://blank.html',
  16                                           page_set, base_dir)
  17
  18   def RunRepaint(self, action_runner):
  19     action_runner.RepaintContinuously(seconds=2)
  20
  21
  22 class RepaintUnitTest(page_test_test_case.PageTestTestCase):
  23   """Smoke test for repaint measurement
  24
  25      Runs repaint measurement on a simple page and verifies
  26      that all metrics were added to the results. The test is purely functional,
  27      i.e. it only checks if the metrics are present and non-zero.
  28   """
  29
  30   def setUp(self):
  31     self._options = options_for_unittests.GetCopy()
  32     self._options.browser_options.wpr_mode = wpr_modes.WPR_OFF
  33
  34   def testRepaint(self):
  35     ps = self.CreateEmptyPageSet()
  36     ps.AddPage(TestRepaintPage(ps, ps.base_dir))
  37     measurement = repaint.Repaint()
  38     results = self.RunMeasurement(measurement, ps, options=self._options)
  39     self.assertEquals(0, len(results.failures))
  40
  41     frame_times = results.FindAllPageSpecificValuesNamed('frame_times')
  42     self.assertEquals(len(frame_times), 1)
  43     self.assertGreater(frame_times[0].GetRepresentativeNumber(), 0)
  44
  45     mean_frame_time = results.FindAllPageSpecificValuesNamed('mean_frame_time')
  46     self.assertEquals(len(mean_frame_time), 1)
  47     self.assertGreater(mean_frame_time[0].GetRepresentativeNumber(), 0)
  48
  49     frame_time_discrepancy = results.FindAllPageSpecificValuesNamed(
  50         'frame_time_discrepancy')
  51     self.assertEquals(len(frame_time_discrepancy), 1)
  52     self.assertGreater(frame_time_discrepancy[0].GetRepresentativeNumber(), 0)
  53
  54     percentage_smooth = results.FindAllPageSpecificValuesNamed(
  55         'percentage_smooth')
  56     self.assertEquals(len(percentage_smooth), 1)
  57     self.assertGreaterEqual(percentage_smooth[0].GetRepresentativeNumber(), 0)
  58
  59   @test.Disabled('android')
  60   def testCleanUpTrace(self):
  61     self.TestTracingCleanedUp(repaint.Repaint, self._options)