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# Copyright 2015 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from telemetry.page import page as page_module
from telemetry.page import shared_page_state
from telemetry import story
TIME_TO_WAIT_BEFORE_STARTING_IN_SECONDS = 5
SCROLL_TIMEOUT_IN_SECONDS = 120
# TODO(ulan): Remove this once crbug.com/541508 is fixed.
STARTUP_SCRIPT = '''
window.WebSocket = undefined;
window.Worker = undefined;
window.performance = undefined;'''
class InfiniteScrollPage(page_module.Page):
def __init__(self, url, page_set, name, scroll_amount, delay, repeat,
credentials=None):
super(InfiniteScrollPage, self).__init__(
url=url, page_set=page_set, name=name,
shared_page_state_class=shared_page_state.SharedPageState,
credentials_path='data/credentials.json')
self.credentials = credentials
self.script_to_evaluate_on_commit = STARTUP_SCRIPT
self.scroll_amount = scroll_amount
self.delay = delay
self.repeat = repeat
def RunPageInteractions(self, action_runner):
self._WaitAction(action_runner)
self._ScrollAction(action_runner, self.scroll_amount, self.delay,
self.repeat)
def _ScrollAction(self, action_runner, scroll_amount, delay, repeat):
with action_runner.CreateInteraction('Begin'):
action_runner.tab.browser.DumpMemory()
with action_runner.CreateInteraction('Scrolling'):
action_runner.RepeatableBrowserDrivenScroll(
y_scroll_distance_ratio=scroll_amount,
repeat_delay_ms=delay,
repeat_count=repeat,
timeout=SCROLL_TIMEOUT_IN_SECONDS)
with action_runner.CreateInteraction('End'):
action_runner.tab.browser.DumpMemory()
def _WaitAction(self, action_runner):
with action_runner.CreateInteraction('Load'):
action_runner.WaitForJavaScriptCondition(
'document.body != null && '
'document.body.scrollHeight > window.innerHeight && '
'!document.body.addEventListener("touchstart", function() {})')
with action_runner.CreateInteraction('Wait'):
action_runner.Wait(TIME_TO_WAIT_BEFORE_STARTING_IN_SECONDS)
with action_runner.CreateInteraction('GC'):
action_runner.ForceGarbageCollection()
class InfiniteScrollPageSet(story.StorySet):
""" Top pages that can be scrolled for many pages. """
def __init__(self):
super(InfiniteScrollPageSet, self).__init__(
archive_data_file='data/infinite_scroll.json',
cloud_storage_bucket=story.PARTNER_BUCKET)
# The scroll distance is chosen such that the page can be scrolled
# continuously through the test without hitting the end of the page.
SCROLL_FAR = 60
SCROLL_PAGE = 1
pages = [
('https://www.facebook.com/shakira', 'facebook', SCROLL_FAR, 0, 0),
('https://twitter.com/taylorswift13', 'twitter', SCROLL_PAGE, 10, 30),
('http://techcrunch.tumblr.com/', 'tumblr', SCROLL_FAR, 0, 0),
('https://www.flickr.com/explore', 'flickr', SCROLL_FAR, 0, 0),
('https://meta.discourse.org/t/the-official-discourse-tags-plugin-discourse-tagging/26482',
'discourse', SCROLL_PAGE, 10, 30)
]
for (url, name, scroll_amount, delay, repeat) in pages:
self.AddStory(
InfiniteScrollPage(url, self, name, scroll_amount, delay, repeat))
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