tools/perf/measurements/blink_style_unittest.py

   1 # Copyright 2015 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 blink_style
   6
   7 from telemetry import decorators
   8 from telemetry.testing import options_for_unittests
   9 from telemetry.testing import page_test_test_case
  10
  11
  12 class BlinkStyleTest(page_test_test_case.PageTestTestCase):
  13   """Smoke test for Bink Style measurements.
  14
  15      Runs BlinkStyle measurement on some simple pages and verifies
  16      that expected metrics were added to the results.  The test is purely
  17      functional, 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
  23   @decorators.Disabled('chromeos')  # crbug.com/483212
  24   def testForParsing(self):
  25     ps = self.CreateStorySetFromFileInUnittestDataDir('blink_style.html')
  26     measurement = blink_style.BlinkStyle()
  27     results = self.RunMeasurement(measurement, ps, options=self._options)
  28     self.assertEquals(0, len(results.failures))
  29
  30     def getMetric(results, name, count=1):
  31       metrics = results.FindAllPageSpecificValuesNamed(name)
  32       self.assertEquals(count, len(metrics))
  33       return metrics[0].value
  34
  35     self.assertGreater(getMetric(results, 'parse_css_regular'), 0)
  36     self.assertGreater(getMetric(results, 'tokenize_css_regular'), 0)
  37     self.assertGreater(getMetric(results, 'update_style', 5), 0)
  38     self.assertGreater(getMetric(results, 'update_style_cold', 5), 0)