diff options
| -rw-r--r-- | chrome/test/data/scroll/scroll.js | 82 | ||||
| -rw-r--r-- | chrome/test/functional/perf.py | 48 |
2 files changed, 130 insertions, 0 deletions
diff --git a/chrome/test/data/scroll/scroll.js b/chrome/test/data/scroll/scroll.js new file mode 100644 index 0000000..c3e840f --- /dev/null +++ b/chrome/test/data/scroll/scroll.js @@ -0,0 +1,82 @@ +// Copyright (c) 2011 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. + +// Function that sets a callback called when the next frame is rendered. +var __set_frame_callback; + +// Amount of scrolling at each frame. +var __scroll_delta = 500; + +// Current scroll position. +var __ypos; + +// Time of previous scroll callback execution. +var __start_time = 0; + +// Deltas are in milliseconds. +var __delta_max = 0; +var __delta_min = 1000000; +var __delta_sum = 0; +var __delta_square_sum = 0; +var __n_samples = 0; + +// Whether all scroll tests have completed. +var __tests_complete = false; + +// Initializes the platform-independent frame callback scheduler function. +function __init_set_frame_callback() { + if (!__set_frame_callback) { + if ("webkitRequestAnimationFrame" in window) + __set_frame_callback = webkitRequestAnimationFrame; + else if ("mozRequestAnimationFrame" in window) + __set_frame_callback = mozRequestAnimationFrame; + } +} + + +function record_delta_time() { + var time = new Date().getTime(); + if (__start_time != 0) { + var delta = time - __start_time; + document.title = delta + " (" + Math.round(1000.0 / delta) + ")"; + __n_samples++; + __delta_sum += delta; + __delta_square_sum += delta * delta; + if (delta < __delta_min) { + __delta_min = delta; + } + if (delta > __delta_max) { + __delta_max = delta; + } + } + __start_time = time; +} + + +// Scrolls page down and reschedules itself until it hits the bottom. Collects +// stats. +function __frame_callback() { + record_delta_time(); + window.scrollBy(0, __scroll_delta); + __ypos += __scroll_delta; + scrollable_distance = document.body.scrollHeight - window.innerHeight; + if (__ypos < scrollable_distance) { + __set_frame_callback(__frame_callback, document.body); + } else { + __tests_complete = true; + } +} + +// Sets things here after the document has been rendered. +function __first_frame_callback() { + document.body.scrollTop = 0; + __set_frame_callback(__frame_callback, document.body); +} + + +function __start_scroll_test() { + __init_set_frame_callback(); + __ypos = 0; + __set_frame_callback(__first_frame_callback, document.body); +} diff --git a/chrome/test/functional/perf.py b/chrome/test/functional/perf.py index 29e8e69..b393050 100644 --- a/chrome/test/functional/perf.py +++ b/chrome/test/functional/perf.py @@ -455,6 +455,54 @@ class FileUploadDownloadTest(BasePerfTest): self._PrintSummaryResults('Upload50MBFile', timings, 'milliseconds') +class ScrollTest(BasePerfTest): + """Tests to measure scrolling performance.""" + + def RunTestScroll(self): + # Navigate to a webpage, inject the scroll test code, and initiate the test. + self.assertTrue(self.AppendTab(pyauto.GURL(self.GetFileURLForDataPath( + 'find_in_page', 'largepage.html'))), + msg='Failed to append tab for webpage.') + + scroll_file = os.path.join(self.DataDir(), 'scroll', 'scroll.js') + with open(scroll_file, 'r') as f: + scroll_text = f.read() + js = """ + %s + __start_scroll_test(); + window.domAutomationController.send('done'); + """ % scroll_text + self.ExecuteJavascript(js, 0, 1) + + # Poll the webpage until the test is complete. + def IsTestDone(): + done_js = """ + if (__tests_complete) + window.domAutomationController.send('true'); + else + window.domAutomationController.send('false'); + """ + return self.ExecuteJavascript(done_js, 0, 1) == 'true' + + self.assertTrue( + self.WaitUntil(IsTestDone, timeout=300, expect_retval=True, + retry_sleep=0.10), + msg='Timed out when waiting for scrolling tests to complete.') + + # Get the scroll tests results from the webpage. + results_js = """ + window.domAutomationController.send( + "{'delta_max': " + __delta_max + ", 'delta_min': " + __delta_min + + ", 'delta_sum': " + __delta_sum + ", 'delta_square_sum': " + + __delta_square_sum + ", 'n_samples': " + __n_samples + "}" + ); + """ + results = eval(self.ExecuteJavascript(results_js, 0, 1)) + print '===== SCROLL TEST RESULTS =====' + self.pprint(results) + print '===============================' + + class PerfTestServerRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler): """Request handler for the local performance test server.""" |