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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.
import unittest
from profile_creators.fast_navigation_profile_extender import (
FastNavigationProfileExtender)
from telemetry.core import util
from telemetry.unittest_util import options_for_unittests
util.AddDirToPythonPath(util.GetTelemetryDir(), 'third_party', 'mock')
import mock # pylint: disable=import-error
class FakeTab(object):
pass
class FakeTabList(object):
def __init__(self):
self._tabs = []
def New(self):
tab = FakeTab()
self._tabs.append(tab)
return tab
def __len__(self):
return len(self._tabs)
class FakeBrowser(object):
def __init__(self):
self.tabs = FakeTabList()
# Testing private method.
# pylint: disable=protected-access
class FastNavigationProfileExtenderTest(unittest.TestCase):
def testPerformNavigations(self):
maximum_batch_size = 15
options = options_for_unittests.GetCopy()
extender = FastNavigationProfileExtender(options, maximum_batch_size)
navigation_urls = []
for i in range(extender._NUM_TABS):
navigation_urls.append('http://test%s.com' % i)
batch_size = 5
navigation_urls_batch = navigation_urls[3:3 + batch_size]
extender.GetUrlIterator = mock.MagicMock(
return_value=iter(navigation_urls_batch))
extender.ShouldExitAfterBatchNavigation = mock.MagicMock(return_value=True)
extender._WaitForQueuedTabsToLoad = mock.MagicMock()
extender._browser = FakeBrowser()
extender._BatchNavigateTabs = mock.MagicMock()
# Set up a callback to record the tabs and urls in each navigation.
callback_tabs_batch = []
callback_urls_batch = []
def SideEffect(*args, **_):
batch = args[0]
for tab, url in batch:
callback_tabs_batch.append(tab)
callback_urls_batch.append(url)
extender._BatchNavigateTabs.side_effect = SideEffect
# Perform the navigations.
extender._PerformNavigations()
# Each url in the batch should have been navigated to exactly once.
self.assertEqual(set(callback_urls_batch), set(navigation_urls_batch))
# The other urls should not have been navigated to.
navigation_urls_remaining = (set(navigation_urls) -
set(navigation_urls_batch))
self.assertFalse(navigation_urls_remaining & set(callback_urls_batch))
# The first couple of tabs should have been navigated once. The remaining
# tabs should not have been navigated.
for i in range(len(extender._browser.tabs)):
tab = extender._browser.tabs._tabs[i]
if i < batch_size:
expected_tab_navigation_count = 1
else:
expected_tab_navigation_count = 0
count = callback_tabs_batch.count(tab)
self.assertEqual(count, expected_tab_navigation_count)
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