sdk/platform-tools/systrace/catapult/telemetry/telemetry/web_perf/timeline_based_page_test.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 telemetry.page import legacy_page_test
   6
   7 class TimelineBasedPageTest(legacy_page_test.LegacyPageTest):
   8   """Page test that collects metrics with TimelineBasedMeasurement.
   9
  10   WillRunStory(), Measure() and DidRunStory() are all done in story_runner
  11   explicitly. We still need this wrapper around PageTest because it executes
  12   some browser related functions in the parent class, which is needed by
  13   Timeline Based Measurement benchmarks. This class will be removed after
  14   page_test's hooks are fully removed.
  15   """
  16   def __init__(self, tbm):
  17     super(TimelineBasedPageTest, self).__init__()
  18     self._measurement = tbm
  19
  20   @property
  21   def measurement(self):
  22     return self._measurement
  23
  24   def ValidateAndMeasurePage(self, page, tab, results):
  25     """Collect all possible metrics and added them to results."""
  26     # Measurement is done explicitly in story_runner for timeline based page
  27     # test.
  28     pass