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Django StaticLiveServerTestCase有时以以下结尾:远程主机强制关闭了现有连接

selenium-chromedriver google-chrome selenium django python

Pablo Fernandez · 技术社区 · 6 年前

在我刚刚创建的Django应用程序中,我将其更改为使用PostgreSQL,并创建了一个应用程序,我进行了以下测试:

from django.contrib.auth.models import User
from django.contrib.staticfiles.testing import StaticLiveServerTestCase
from selenium import webdriver
from selenium.webdriver.common.keys import Keys


class TestWebBrowser(StaticLiveServerTestCase):
    @classmethod
    def setUpClass(cls):
        super().setUpClass()
        cls.webdriver = webdriver.Chrome()
        cls.webdriver.implicitly_wait(10)

    @classmethod
    def tearDownClass(cls):
        cls.webdriver.close()
        cls.webdriver.quit()
        super().tearDownClass()

    def setUp(self):
        self.admin = User.objects.create_superuser(username="username", password="password",
                                                   email="example@example.com")

    def test_log_in(self):
        self.webdriver.get(f"{self.live_server_url}/admin")
        self.webdriver.find_element_by_id("id_username").send_keys("username")
        self.webdriver.find_element_by_id("id_password").send_keys("password")
        self.webdriver.find_element_by_id("id_password").send_keys(Keys.RETURN)
        self.webdriver.find_element_by_link_text("Users").click()

测试总是运行,Chrome启动,执行测试所说的操作,但在最后,有时会抛出以下错误:

Exception happened during processing of request from ('127.0.0.1', 55283)
Traceback (most recent call last):
  File "C:\Users\pupeno\scoop\apps\python\current\lib\socketserver.py", line 647, in process_request_thread
    self.finish_request(request, client_address)
  File "C:\Users\pupeno\scoop\apps\python\current\lib\socketserver.py", line 357, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "C:\Users\pupeno\scoop\apps\python\current\lib\socketserver.py", line 717, in __init__
    self.handle()
  File "C:\Users\pupeno\Temporary\untitled\venv\lib\site-packages\django\core\servers\basehttp.py", line 139, in handle
    self.raw_requestline = self.rfile.readline(65537)
  File "C:\Users\pupeno\scoop\apps\python\current\lib\socket.py", line 589, in readinto
    return self._sock.recv_into(b)
ConnectionResetError: [WinError 10054] An existing connection was forcibly closed by the remote host

所有测试都通过了。我只是想知道 STDERR . 你知道为什么吗?我是不是错过了一些撕下来的东西?

如果我改变 tearDownClass 致:

@classmethod
def tearDownClass(cls):
    cls.webdriver.quit()

我在跑:

Django==2.1.2
selenium==3.141.0

> chromedriver.exe --version
ChromeDriver 2.43.600210 (68dcf5eebde37173d4027fa8635e332711d2874a)

和

Google Chrome Version 70.0.3538.102 (Official Build) (64-bit)

运行测试的完整输出如下所示:

Testing started at 15:33 ...
C:\Users\pupeno\Temporary\untitled\venv\Scripts\python.exe "C:\Program Files\JetBrains\PyCharm 2018.2.4\helpers\pycharm\django_test_manage.py" test foo.tests.TestImportCRMData C:\Users\pupeno\Temporary\untitled
Creating test database for alias 'default'...
System check identified no issues (0 silenced).
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 49825)
Traceback (most recent call last):
  File "C:\Users\pupeno\scoop\apps\python\current\lib\socketserver.py", line 647, in process_request_thread
    self.finish_request(request, client_address)
  File "C:\Users\pupeno\scoop\apps\python\current\lib\socketserver.py", line 357, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "C:\Users\pupeno\scoop\apps\python\current\lib\socketserver.py", line 717, in __init__
    self.handle()
  File "C:\Users\pupeno\Temporary\untitled\venv\lib\site-packages\django\core\servers\basehttp.py", line 139, in handle
    self.raw_requestline = self.rfile.readline(65537)
  File "C:\Users\pupeno\scoop\apps\python\current\lib\socket.py", line 589, in readinto
    return self._sock.recv_into(b)
ConnectionResetError: [WinError 10054] An existing connection was forcibly closed by the remote host
----------------------------------------
Destroying test database for alias 'default'...

Process finished with exit code 0

1 回复 | 直到 6 年前

undetected Selenium 5 年前

此错误消息。。。

ConnectionResetError: [WinError 10054] An existing connection was forcibly closed by the remote host

…意味着无法与 网络浏览会话 Chrome浏览器 会话被远程主机强制关闭。

webdriver.close() 和 webdriver.quit()

自动通过时硒 driver.quit() 在内部 tearDown(){} 网络驱动程序 Web客户端 实例优雅。调用 quit() 方法 DELETE 通过发送当前浏览会话 “退出” {“flags”:[“eForceQuit”]} 最后把请求打开 /关闭 EndPoint . 下面是一个例子:

1503397488598   webdriver::server   DEBUG   -> DELETE /session/8e457516-3335-4d3b-9140-53fb52aa8b74 
1503397488607   geckodriver::marionette TRACE   -> 37:[0,4,"quit",{"flags":["eForceQuit"]}]
1503397488821   webdriver::server   DEBUG   -> GET /shutdown

所以调用 退出() 方法 Web Browser 会议和 WebDriver 实例被完全杀死。因此您不必包含任何附加步骤(调用 close()

解决方案

首先删除以下行:

cls.webdriver.close()

cls.webdriver.quit()

一定会以最好的方式终止连接。

在这里你可以找到关于 Selenium : How to stop geckodriver process impacting PC memory, without calling driver.quit()?

更新A

根据 liveservertestcase 这个 tearDownClass() 定义为:

@classmethod
def tearDownClass(cls):
    cls.selenium.quit()
    super().tearDownClass()

django/django/test/testcases.py 这称为:

@classmethod
def tearDownClass(cls):
    cls._tearDownClassInternal()
    cls._live_server_modified_settings.disable()
    super().tearDownClass()

更新B

尽管你提到过:

铬河2.43.600210
使用

根据发行说明 ChromeDriver v2.43 :

支持Chrome v69-71

谷歌浏览器 谷歌浏览器 执行以下行时调用二进制文件:
```
cls.webdriver = webdriver.Chrome()
```

解决方案

确保:

硒 Version 3.141.59 .
更新为当前 ChromeDriver v79.0.3945.36 水平。
铬 Chrome版本79.0 水平。(根据 ChromeDriver v79.0 release notes )
你的通过你的 集成电路设备 和重建
( )使用 CCleaner 在您的 测试套件 .
( 仅限LinuxOS Free Up and Release the Unused/Cached Memory in Ubuntu/Linux Mint 在你被处决之前和之后 测试套件
如果你的基地版本太旧,请将其卸载并安装最新的GA和发布的版本 Web客户端
拿一个 系统重启
执行您的 @Test 作为非根用户。
司机退出() 在内部 拆卸(){} 关闭和销毁 网络驱动程序 和实例优雅。

参考

你可以在以下网站上找到一些相关的讨论:

urllib3.exceptions.ProtocolError: ('Connection aborted.', error(10054, 'An existing connection was forcibly closed by the remote host'))