tools/perf/measurements/loading_measurement_analyzer_unittest.py

   1 # Copyright 2013 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 import os
   5 import StringIO
   6 import unittest
   7
   8 from measurements import loading_measurement_analyzer
   9 from telemetry.core import util
  10
  11 class LoadingMeasurementAnalyzerUnitTest(unittest.TestCase):
  12
  13   # TODO(tonyg): Remove this backfill when we can assume python 2.7 everywhere.
  14   def assertIn(self, first, second, _=None):
  15     self.assertTrue(first in second,
  16                     msg="'%s' not found in '%s'" % (first, second))
  17
  18   def testLoadingProfile(self):
  19     output = StringIO.StringIO()
  20     csv_path = os.path.join(
  21         util.GetChromiumSrcDir(),
  22         'tools', 'perf', 'measurements','test_data', 'loading_profile.csv')
  23     loading_measurement_analyzer.main([csv_path], stdout=output)
  24     output = output.getvalue()
  25
  26     # Get the summary right.
  27     self.assertIn('Total URLs: 9', output)
  28     self.assertIn('Total page load time: 51s', output)
  29     self.assertIn('Average page load time: 5621ms', output)
  30
  31     # Spot check a few samples.
  32     self.assertIn('WTF::IntHash::hash:  1359797948period  1.1%', output)
  33     self.assertIn('WebCore::rangesIntersect:   648335678period  0.5%', output)
  34     self.assertIn('v8::internal::Scanner::Scan:    19668346period  0.0', output)