src/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_measurement_unittest_base
   8 from telemetry.unittest import options_for_unittests
   9
  10
  11 class RepaintUnitTest(
  12       page_measurement_unittest_base.PageMeasurementUnitTestBase):
  13   """Smoke test for repaint measurement
  14
  15      Runs repaint measurement on a simple page and verifies
  16      that all metrics were added to the results. The test is purely functional,
  17      i.e. it only checks if the metrics are present and non-zero.
  18   """
  19
  20   def setUp(self):
  21     self._options = options_for_unittests.GetCopy()
  22     self._options.browser_options.wpr_mode = wpr_modes.WPR_OFF
  23
  24   def testRepaint(self):
  25     ps = self.CreatePageSetFromFileInUnittestDataDir('blank.html')
  26     measurement = repaint.Repaint()
  27     results = self.RunMeasurement(measurement, ps, options=self._options)
  28     self.assertEquals(0, len(results.failures))
  29
  30     frame_times = results.FindAllPageSpecificValuesNamed('frame_times')
  31     self.assertEquals(len(frame_times), 1)
  32     self.assertGreater(frame_times[0].GetRepresentativeNumber(), 0)
  33
  34     mean_frame_time = results.FindAllPageSpecificValuesNamed('mean_frame_time')
  35     self.assertEquals(len(mean_frame_time), 1)
  36     self.assertGreater(mean_frame_time[0].GetRepresentativeNumber(), 0)
  37
  38     jank = results.FindAllPageSpecificValuesNamed('jank')
  39     self.assertEquals(len(jank), 1)
  40     self.assertGreater(jank[0].GetRepresentativeNumber(), 0)
  41
  42     mostly_smooth = results.FindAllPageSpecificValuesNamed('mostly_smooth')
  43     self.assertEquals(len(mostly_smooth), 1)
  44     self.assertGreaterEqual(mostly_smooth[0].GetRepresentativeNumber(), 0)
  45
  46   def testCleanUpTrace(self):
  47     self.TestTracingCleanedUp(repaint.Repaint, self._options)