Тест Selenium Python застрял в urlopen

Мое приложение основывается на:

  • Python 3
  • Django 1.8
  • Weasyprint
  • Селен

Он работает безупречно в dev и производственной среде, но не при тестировании с селеном.

Используя weasyprint, я создаю PDF из HTML, эта библиотека использует urllib для загрузки CSS (например, http: // localhost: 8081 / static / lib / bootstrap / css / bootstrap.min.css ), но он зависает (нет ошибок, просто застревают), открывая их.

Если я введу этот url непосредственно в свой браузер, когда его повесят, отобразится CSS.

Используемая команда:

./manage.py test tests.test_account.HomeNewVisitorTest 

Соответствующая часть теста:

 from selenium import webdriver class HomeNewVisitorTest(StaticLiveServerTestCase): def setUp(self): if TEST_ENV_FIREFOX: self.driver = webdriver.Firefox() else: self.driver = webdriver.PhantomJS() self.driver.set_window_size(1440, 900) def tearDown(self): try: path = 'worksites/' + self.worksite_name.lower() os.rmdir(settings.MEDIA_ROOT + path) except FileNotFoundError: pass super().tearDown() def test(self): d = self.driver d.get(self.get_full_url('home')) d.find_element_by_css_selector('.btn-success[type=submit]').click() 

На мой взгляд:

  # Generate PDF for contact directory template = get_template("pdf/annuaire.html") context = {"worksite": worksite} html = template.render(RequestContext(self.request, context)) base_url = self.request.build_absolute_uri("/") pdf = weasyprint.HTML(string=html, base_url=base_url) pdf.write_pdf(directory + '/annuaire.pdf') 

Вот свалка потока при застревании:

 Fatal Python error: Aborted Thread 0x0000000106f92000 (most recent call first): File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/socket.py", line 374 in readinto File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/http/client.py", line 313 in _read_status File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/http/client.py", line 351 in begin File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/http/client.py", line 1171 in getresponse File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/urllib/request.py", line 1185 in do_open File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/urllib/request.py", line 1210 in http_open File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/urllib/request.py", line 441 in _call_chain File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/urllib/request.py", line 481 in _open File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/urllib/request.py", line 463 in open File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/urllib/request.py", line 161 in urlopen File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/weasyprint/urls.py", line 276 in default_url_fetcher File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/weasyprint/urls.py", line 311 in fetch File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/contextlib.py", line 59 in __enter__ File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/weasyprint/__init__.py", line 297 in _select_source File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/contextlib.py", line 59 in __enter__ File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/weasyprint/__init__.py", line 223 in __init__ File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/weasyprint/css/__init__.py", line 198 in find_stylesheets File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/weasyprint/css/__init__.py", line 448 in get_all_computed_styles File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/weasyprint/document.py", line 312 in _render File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/weasyprint/__init__.py", line 132 in render File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/weasyprint/__init__.py", line 164 in write_pdf File "/Users/sebcorbin/Sites/planexo/worksite/views.py", line 111 in done File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/formtools/wizard/views.py", line 357 in render_done File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/formtools/wizard/views.py", line 730 in render_done File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/formtools/wizard/views.py", line 300 in post File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/formtools/wizard/views.py", line 686 in post File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/views/generic/base.py", line 89 in dispatch File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/formtools/wizard/views.py", line 237 in dispatch File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/views/generic/base.py", line 71 in view File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/contrib/auth/decorators.py", line 22 in _wrapped_view File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/core/handlers/base.py", line 132 in get_response File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/core/handlers/wsgi.py", line 189 in __call__ File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/test/testcases.py", line 1099 in __call__ File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/contrib/staticfiles/handlers.py", line 63 in __call__ File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/wsgiref/handlers.py", line 137 in run File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/core/servers/basehttp.py", line 182 in handle File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/socketserver.py", line 673 in __init__ File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/core/servers/basehttp.py", line 102 in __init__ File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/socketserver.py", line 344 in finish_request File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/socketserver.py", line 331 in process_request File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/socketserver.py", line 305 in _handle_request_noblock File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/socketserver.py", line 238 in serve_forever File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/test/testcases.py", line 1182 in run File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/threading.py", line 920 in _bootstrap_inner File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/threading.py", line 888 in _bootstrap Current thread 0x00007fff7996a300 (most recent call first): File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/socket.py", line 374 in readinto File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/http/client.py", line 313 in _read_status File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/http/client.py", line 351 in begin File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/http/client.py", line 1171 in getresponse File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/urllib/request.py", line 1185 in do_open File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/urllib/request.py", line 1210 in http_open File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/urllib/request.py", line 441 in _call_chain File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/urllib/request.py", line 481 in _open File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/urllib/request.py", line 463 in open File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/selenium/webdriver/remote/remote_connection.py", line 457 in _request File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/selenium/webdriver/remote/remote_connection.py", line 389 in execute File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/selenium/webdriver/remote/webdriver.py", line 191 in execute File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/selenium/webdriver/remote/webelement.py", line 447 in _execute File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/selenium/webdriver/remote/webelement.py", line 68 in click File "/Users/sebcorbin/Sites/planexo/tests/test_account.py", line 203 in _test_worksite_form File "/Users/sebcorbin/Sites/planexo/tests/test_account.py", line 36 in test File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/unittest/case.py", line 577 in run File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/unittest/case.py", line 625 in __call__ File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/test/testcases.py", line 186 in __call__ File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/unittest/suite.py", line 122 in run File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/unittest/suite.py", line 84 in __call__ File "/usr/local/Cellar/python3/3.4.3/Frameworks/Python.framework/Versions/3.4/lib/python3.4/unittest/runner.py", line 168 in run File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/test/runner.py", line 178 in run_suite File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/test/runner.py", line 211 in run_tests File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/core/management/commands/test.py", line 90 in handle File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/core/management/base.py", line 441 in execute File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/core/management/commands/test.py", line 74 in execute File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/core/management/base.py", line 390 in run_from_argv File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/core/management/commands/test.py", line 30 in run_from_argv File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/core/management/__init__.py", line 330 in execute File "/Users/sebcorbin/.virtualenvs/planexo-py3/lib/python3.4/site-packages/django/core/management/__init__.py", line 338 in execute_from_command_line File "./manage.py", line 10 in <module> 

4 Solutions collect form web for “Тест Selenium Python застрял в urlopen”

Благодаря всем вам, чтобы выявить проблему, я задумал эту статью http://nedbatchelder.com/blog/201103/quick_and_dirty_multithreaded_django_dev_server.html и изменил файл manage.py :

 #!/usr/bin/env python from http import server import os from socketserver import ThreadingMixIn import sys def monkey_patch_test_server(): # This monkey-patches HTTPServer to create a base HTTPServer class that # supports multithreading originalhttpserver = server.HTTPServer class ThreadedHTTPServer(ThreadingMixIn, originalhttpserver): def __init__(self, server_address, RequestHandlerClass=None): originalhttpserver.__init__(self, server_address, RequestHandlerClass) server.HTTPServer = ThreadedHTTPServer if __name__ == "__main__": os.environ.setdefault("DJANGO_SETTINGS_MODULE", "planexo.settings") from django.core.management import execute_from_command_line if sys.argv[1] == 'test': monkey_patch_test_server() execute_from_command_line(sys.argv) 

Теперь это работает!

Используйте модуль Python faulthandler для печати трассировки всех зависающих потоков. Это точно определит, какие фактические функции были связаны с подвеской.

При необходимости отредактируйте свой вопрос и добавьте соответствующую информацию.

В противном случае я предполагаю, что вы используете сервер тестирования / разработки Django таким образом, чтобы он мог обрабатывать только один запрос за раз. Ваш начальный HTTP-запрос на dev-сервер запускает запрос на запрос данных от себя, который Django-dev-сервер не может выполнить. Но это всего лишь предположение.

Также отсутствует соответствующий исходный код.

Я поделюсь своим делом:

У меня была эта проблема с моими тесты селен Django (django == 1.7.12 и selenium == 2.53.1) с ChromeDriver 2.21.371459 и Google Chrome 48.0.2564.116.

Я смог изолировать проблему. В моем случае это происходило только для страниц, ссылающихся на статический файл (изображение в <img> HTML <img> например, http://cdn.local.myproject.net/static/myimage.png ) в моем пользовательском локальном домене cdn. Проблема не возникла, если я использовал относительный путь «/static/myimage.png» или localhost « http://127.0.0.1/static/myimage.png », поэтому я решил, что это проблема DNS.

Я смог обойти эту проблему, используя --dns-prefetch-disable chrome.

Пример в Python:

 from selenium.webdriver import Chrome from selenium.webdriver.chrome.options import Options chrome_options = Options() chrome_options.add_argument('--dns-prefetch-disable') driver = Chrome(chrome_options=options) 

Я не знаю, является ли это общим делом, но, надеюсь, это может помочь некоторым из вас.

Используйте модуль faulthandler . Возможно, это может быть и то, что Django, может принимать только 1 запрос.

Python - лучший язык программирования в мире.