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# Copyright 2013 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.
import sys
import unittest
from telemetry.core import browser_options
from telemetry.internal.results import page_test_results
from telemetry.internal import story_runner
from telemetry.unittest_util import simple_mock
from measurements import page_cycler
from metrics import keychain_metric
# Allow testing protected members in the unit test.
# pylint: disable=W0212
class MockMemoryMetric(object):
"""Used instead of simple_mock.MockObject so that the precise order and
number of calls need not be specified."""
def __init__(self):
pass
def Start(self, page, tab):
pass
def Stop(self, page, tab):
pass
def AddResults(self, tab, results):
pass
def AddSummaryResults(self, tab, results):
pass
class FakePage(object):
"""Used to mock loading a page."""
def __init__(self, url):
self.url = url
self.is_file = url.startswith('file://')
class FakeTab(object):
"""Used to mock a browser tab."""
def __init__(self):
self.clear_cache_calls = 0
self.navigated_urls = []
def ClearCache(self, force=False):
assert force
self.clear_cache_calls += 1
def EvaluateJavaScript(self, script):
# If the page cycler invokes javascript to measure the number of keychain
# accesses, return a valid JSON dictionary.
keychain_histogram_name = keychain_metric.KeychainMetric.HISTOGRAM_NAME
# Fake data for keychain metric.
if keychain_histogram_name in script:
return '{{ "{0}" : 0 }}'.format(keychain_histogram_name)
return 1
def Navigate(self, url):
self.navigated_urls.append(url)
def WaitForJavaScriptExpression(self, _, __):
pass
@property
def browser(self):
return FakeBrowser()
class FakeBrowser(object):
_iteration = 0
@property
def cpu_stats(self):
FakeBrowser._iteration += 1
return {
'Browser': {'CpuProcessTime': FakeBrowser._iteration,
'TotalTime': FakeBrowser._iteration * 2},
'Renderer': {'CpuProcessTime': FakeBrowser._iteration,
'TotalTime': FakeBrowser._iteration * 3},
'Gpu': {'CpuProcessTime': FakeBrowser._iteration,
'TotalTime': FakeBrowser._iteration * 4}
}
@property
def platform(self):
return FakePlatform()
@property
def http_server(self):
class FakeHttpServer(object):
def UrlOf(self, url_path):
return 'http://fakeserver:99999/%s' % url_path
return FakeHttpServer()
class FakePlatform(object):
def GetOSName(self):
return 'fake'
def CanMonitorPower(self):
return False
class PageCyclerUnitTest(unittest.TestCase):
def SetUpCycler(self, page_repeat=1, pageset_repeat=10, cold_load_percent=50,
report_speed_index=False, setup_memory_module=False):
cycler = page_cycler.PageCycler(
page_repeat = page_repeat,
pageset_repeat = pageset_repeat,
cold_load_percent = cold_load_percent,
report_speed_index = report_speed_index)
options = browser_options.BrowserFinderOptions()
options.browser_options.platform = FakePlatform()
parser = options.CreateParser()
story_runner.AddCommandLineArgs(parser)
args = ['--page-repeat=%i' % page_repeat,
'--pageset-repeat=%i' % pageset_repeat]
parser.parse_args(args)
story_runner.ProcessCommandLineArgs(parser, options)
cycler.CustomizeBrowserOptions(options.browser_options)
if setup_memory_module:
# Mock out memory metrics; the real ones require a real browser.
mock_memory_metric = MockMemoryMetric()
mock_memory_module = simple_mock.MockObject()
mock_memory_module.ExpectCall(
'MemoryMetric').WithArgs(simple_mock.DONT_CARE).WillReturn(
mock_memory_metric)
real_memory_module = page_cycler.memory
try:
page_cycler.memory = mock_memory_module
browser = FakeBrowser()
cycler.WillStartBrowser(options.browser_options.platform)
cycler.DidStartBrowser(browser)
finally:
page_cycler.memory = real_memory_module
return cycler
def testOptionsColdLoadNoArgs(self):
cycler = self.SetUpCycler()
self.assertEquals(cycler._cold_run_start_index, 5)
def testOptionsColdLoadPagesetRepeat(self):
cycler = self.SetUpCycler(pageset_repeat=20, page_repeat=2)
self.assertEquals(cycler._cold_run_start_index, 20)
def testOptionsColdLoadRequested(self):
cycler = self.SetUpCycler(pageset_repeat=21, page_repeat=2,
cold_load_percent=40)
self.assertEquals(cycler._cold_run_start_index, 26)
def testCacheHandled(self):
cycler = self.SetUpCycler(pageset_repeat=5,
cold_load_percent=50,
setup_memory_module=True)
url_name = 'http://fakepage.com'
page = FakePage(url_name)
tab = FakeTab()
for i in range(5):
results = page_test_results.PageTestResults()
results.WillRunPage(page)
cycler.WillNavigateToPage(page, tab)
self.assertEqual(max(0, i - 2), tab.clear_cache_calls,
'Iteration %d tab.clear_cache_calls %d' %
(i, tab.clear_cache_calls))
cycler.ValidateAndMeasurePage(page, tab, results)
results.DidRunPage(page)
values = results.all_page_specific_values
self.assertGreater(len(values), 2)
self.assertEqual(values[0].page, page)
chart_name = 'cold_times' if i == 0 or i > 2 else 'warm_times'
self.assertEqual(values[0].name, '%s.page_load_time' % chart_name)
self.assertEqual(values[0].units, 'ms')
cycler.DidNavigateToPage(page, tab)
def testColdWarm(self):
cycler = self.SetUpCycler(pageset_repeat=3, setup_memory_module=True)
pages = [FakePage('http://fakepage1.com'), FakePage('http://fakepage2.com')]
tab = FakeTab()
for i in range(3):
for page in pages:
results = page_test_results.PageTestResults()
results.WillRunPage(page)
cycler.WillNavigateToPage(page, tab)
cycler.ValidateAndMeasurePage(page, tab, results)
results.DidRunPage(page)
values = results.all_page_specific_values
self.assertGreater(len(values), 2)
self.assertEqual(values[0].page, page)
chart_name = 'cold_times' if i == 0 or i > 1 else 'warm_times'
self.assertEqual(values[0].name, '%s.page_load_time' % chart_name)
self.assertEqual(values[0].units, 'ms')
cycler.DidNavigateToPage(page, tab)
def testResults(self):
cycler = self.SetUpCycler(setup_memory_module=True)
pages = [FakePage('http://fakepage1.com'), FakePage('http://fakepage2.com')]
tab = FakeTab()
for i in range(2):
for page in pages:
results = page_test_results.PageTestResults()
results.WillRunPage(page)
cycler.WillNavigateToPage(page, tab)
cycler.ValidateAndMeasurePage(page, tab, results)
results.DidRunPage(page)
values = results.all_page_specific_values
# On Mac, there is an additional measurement: the number of keychain
# accesses.
value_count = 3
if sys.platform == 'darwin':
value_count += 1
self.assertEqual(value_count, len(values))
self.assertEqual(values[0].page, page)
chart_name = 'cold_times' if i == 0 else 'warm_times'
self.assertEqual(values[0].name, '%s.page_load_time' % chart_name)
self.assertEqual(values[0].units, 'ms')
expected_values = ['gpu', 'browser']
for value, expected in zip(values[1:len(expected_values) + 1],
expected_values):
self.assertEqual(value.page, page)
self.assertEqual(value.name,
'cpu_utilization.cpu_utilization_%s' % expected)
self.assertEqual(value.units, '%')
cycler.DidNavigateToPage(page, tab)
def testLegacyPagesAvoidCrossRenderNavigation(self):
# For legacy page cyclers with file URLs, verify that WillNavigateToPage
# does an initial navigate to avoid paying for a cross-renderer navigation.
cycler = self.SetUpCycler(setup_memory_module=True)
pages = [FakePage('file://fakepage1.com'), FakePage('file://fakepage2.com')]
tab = FakeTab()
self.assertEqual([], tab.navigated_urls)
for page in pages * 2:
cycler.WillNavigateToPage(page, tab)
self.assertEqual(
['http://fakeserver:99999/nonexistent.html'], tab.navigated_urls)
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