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# SPDX-License-Identifier: GPL-3.0-or-later
"""
Common fixtures for Haketilo unit tests
"""
# This file is part of Haketilo.
#
# Copyright (C) 2021 Wojtek Kosior <koszko@koszko.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
# I, Wojtek Kosior, thereby promise not to sue for violation of this file's
# license. Although I request that you do not make use of this code in a
# proprietary program, I am not going to enforce this in court.
import pytest
from pathlib import Path
from tempfile import TemporaryDirectory
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from .profiles import firefox_safe_mode
from .server import do_an_internet
from .extension_crafting import make_extension
from .world_wide_library import start_serving_script, dump_scripts
from .misc_constants import proj_root
@pytest.fixture(scope="session")
def proxy():
httpd = do_an_internet()
yield httpd
httpd.shutdown()
@pytest.fixture(scope="session")
def _driver(proxy):
with firefox_safe_mode() as driver:
yield driver
driver.quit()
def close_all_but_one_window(driver):
while len(driver.window_handles) > 1:
driver.switch_to.window(driver.window_handles[-1])
driver.close()
driver.switch_to.window(driver.window_handles[0])
@pytest.fixture()
def driver(_driver, request):
nav_target = request.node.get_closest_marker('get_page')
nav_target = nav_target.args[0] if nav_target else 'about:blank'
second_driver = request.node.get_closest_marker('second_driver')
if second_driver:
with firefox_safe_mode() as _driver:
_driver.get(nav_target)
yield _driver
_driver.quit()
else:
close_all_but_one_window(_driver)
_driver.get(nav_target)
_driver.implicitly_wait(0)
yield _driver
@pytest.fixture()
def webextension(driver, request):
ext_data = request.node.get_closest_marker('ext_data')
if ext_data is None:
raise Exception('"webextension" fixture requires "ext_data" marker to be set')
ext_data = ext_data.args[0].copy()
navigate_to = ext_data.get('navigate_to')
if navigate_to is not None:
del ext_data['navigate_to']
driver.get('https://gotmyowndoma.in/')
ext_path = make_extension(Path(driver.firefox_profile.path), **ext_data)
addon_id = driver.install_addon(str(ext_path), temporary=True)
get_url = lambda d: d.execute_script('return window.ext_page_url;')
ext_page_url = WebDriverWait(driver, 10).until(get_url)
driver.get(ext_page_url)
if navigate_to is not None:
driver.get(driver.current_url.replace('testpage.html', navigate_to))
yield
# Unloading an extension might cause its windows to vanish. Make sure
# there's at least one window navigated to some other page before
# uninstalling the addon. Otherwise, we could be left with a windowless
# browser :c
driver.switch_to.window(driver.window_handles[-1])
driver.get('https://gotmyowndoma.in/')
driver.uninstall_addon(addon_id)
ext_path.unlink()
@pytest.fixture()
def haketilo(driver):
addon_id = driver.install_addon(str(Path.cwd() / 'mozilla-build.zip'),
temporary=True)
yield
driver.uninstall_addon(addon_id)
script_injector_script = '''\
/*
* Selenium by default executes scripts in some weird one-time context. We want
* separately-loaded scripts to be able to access global variables defined
* before, including those declared with `const` or `let`. To achieve that, we
* run our scripts by injecting them into the page with a <script> tag that runs
* javascript served by our proxy. We use custom properties of the `window`
* object to communicate with injected code.
*/
const inject = async () => {
delete window.haketilo_selenium_return_value;
delete window.haketilo_selenium_exception;
window.returnval = val => window.haketilo_selenium_return_value = val;
const injectee = document.createElement('script');
injectee.src = arguments[0];
injectee.type = "application/javascript";
injectee.async = true;
const prom = new Promise(cb => injectee.onload = cb);
window.arguments = arguments[1];
document.body.append(injectee);
await prom;
/*
* To ease debugging, we want this script to signal all exceptions from the
* injectee.
*/
if (window.haketilo_selenium_exception !== false)
throw ['haketilo_selenium_error',
'Error in injected script! Check your geckodriver.log and ./injected_scripts/!'];
return window.haketilo_selenium_return_value;
}
return inject();
'''
def _execute_in_page_context(driver, script, args):
script = script + '\n;\nwindow.haketilo_selenium_exception = false;'
script_url = start_serving_script(script)
try:
result = driver.execute_script(script_injector_script, script_url, args)
if type(result) is list and len(result) == 2 and \
result[0] == 'haketilo_selenium_error':
raise Exception(result[1])
return result
except Exception as e:
dump_scripts()
raise e from None
# Some fixtures here just define functions that operate on driver. We should
# consider making them into webdriver wrapper class methods.
@pytest.fixture()
def execute_in_page(driver):
def do_execute(script, *args):
return _execute_in_page_context(driver, script, args)
yield do_execute
@pytest.fixture()
def wait_elem_text(driver):
def do_wait(id, text):
WebDriverWait(driver, 10).until(
EC.text_to_be_present_in_element((By.ID, id), text)
)
yield do_wait
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