tools/perf/page_sets/blank_page.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 from telemetry.page import page as page_module
   5 from telemetry import story
   6
   7
   8 class BlankPage(page_module.Page):
   9   def __init__(self, url, page_set):
  10     super(BlankPage, self).__init__(url, page_set=page_set)
  11
  12   def RunPageInteractions(self, action_runner):
  13     # Request a RAF and wait for it to be processed to ensure that the metric
  14     # Startup.FirstWebContents.NonEmptyPaint is recorded.
  15     action_runner.ExecuteJavaScript(
  16         """
  17         this.hasRunRAF = 0;
  18         requestAnimationFrame(function() {
  19             this.hasRunRAF = 1;
  20         });
  21         """
  22     )
  23     action_runner.WaitForJavaScriptCondition("this.hasRunRAF == 1")
  24
  25 class BlankPageSet(story.StorySet):
  26   """A single blank page."""
  27
  28   def __init__(self):
  29     super(BlankPageSet, self).__init__()
  30     self.AddStory(BlankPage('file://blank_page/blank_page.html', self))