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      1 # Copyright 2018 The Chromium OS 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 import functools
      6 import logging
      7 import numpy
      8 import time
      9 
     10 from autotest_lib.client.bin import fps_meter
     11 from autotest_lib.client.common_lib.cros import chrome
     12 from autotest_lib.client.cros import touch_playback_test_base
     13 from telemetry.internal.actions import scroll
     14 
     15 import py_utils
     16 
     17 """ List of URLs that will be used to test users gestures on. """
     18 _LIST_OF_URLS = ["https://www.youtube.com", "https://www.cnn.com",
     19     "https://slashdot.org/"]
     20 
     21 """ Scroll bar's moving speed. """
     22 _SCROLL_SPEED = 1500
     23 
     24 """ The total distance that the scroll bar moved. """
     25 _SCROLL_DISTANCE = 3000
     26 
     27 """ Separator used in fps_meter for each VSync. """
     28 _SEPARATOR = " "
     29 
     30 class platform_ScrollTest(touch_playback_test_base.touch_playback_test_base):
     31     """Scroll up and down pressure test."""
     32     version = 1
     33 
     34     def run_once(self):
     35         """Runs the test once."""
     36         perf_results = {}
     37 
     38         def record_fps_info(fps_data, fps_info):
     39             ''' record the fps info from |fps_meter| '''
     40             frame_info, frame_times = fps_info
     41             frame_info_str = ''.join(frame_info)
     42             fps_count = sum(
     43                 map(int, frame_info_str.replace(_SEPARATOR, "")))
     44             fps_data.append(fps_count)
     45 
     46         fps_data = []
     47         fps = fps_meter.FPSMeter(functools.partial(record_fps_info, fps_data))
     48         with chrome.Chrome(init_network_controller=True) as cr:
     49             for url in _LIST_OF_URLS:
     50                 tab = cr.browser.tabs.New()
     51                 tab.Navigate(url)
     52                 try:
     53                     tab.WaitForDocumentReadyStateToBeComplete(timeout=15)
     54                 except py_utils.TimeoutException:
     55                     logging.warning('Time out during loading url ' + url)
     56 
     57                 for x in range(0, 3):
     58                     page_scroll = scroll.ScrollAction(
     59                         speed_in_pixels_per_second=_SCROLL_SPEED,
     60                         distance=_SCROLL_DISTANCE)
     61                     cr.browser.platform.SetHTTPServerDirectories(self.bindir)
     62                     page_scroll.WillRunAction(tab)
     63                     fps.start()
     64                     page_scroll.RunAction(tab)
     65                     fps.stop()
     66                     page_scroll = scroll.ScrollAction(
     67                         direction="up",
     68                         speed_in_pixels_per_second=_SCROLL_SPEED,
     69                         distance=_SCROLL_DISTANCE)
     70                     page_scroll.WillRunAction(tab)
     71                     fps.start()
     72                     page_scroll.RunAction(tab)
     73                     fps.stop()
     74                 time.sleep(1)
     75         value = getattr(numpy, "mean")(fps_data)
     76 
     77         self.output_perf_value(description="fps average",
     78                                 value=value,
     79                                units='frame per second',
     80                                higher_is_better=True)
     81