从 Django 运行 Selenium 时出现超时错误

Question

我在从 Django 运行 SeleniumRC 时遇到问题。我可以运行 Selenium 文档 和 python selenium 客户端文档 在 Python shell 中运行就可以了，无需运行 Django（所以没有 manage.py），但是当我真正尝试时从 django TestCase 或 Django shell 运行 Selenium 时，出现超时错误。 下面是我尝试运行的代码：

from selenium import selenium
from django.test import TestCase

class TestSelenium(TestCase):
    def setUp(self):
        self.verificationErrors = []
        self.selenium = selenium("localhost", 4444, "*firefox", "http://127.0.0.1:8000/")
        self.selenium.start()

    def test_foo(self):
        sel = self.selenium
        sel.open("/")

使用 manage.py 测试注册运行。TestSelenium 会产生以下错误：

======================================================================
ERROR: test_testformmaintainsdata (registration.tests.TestSelenium)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/sam/Documents/dev/app/CustomMade/registration/tests.py", line 158, in setUp
    self.selenium.start()
  File "/usr/local/lib/python2.6/dist-packages/selenium/selenium.py", line 189, in start
    result = self.get_string("getNewBrowserSession", start_args)
  File "/usr/local/lib/python2.6/dist-packages/selenium/selenium.py", line 223, in get_string
    result = self.do_command(verb, args)
  File "/usr/local/lib/python2.6/dist-packages/selenium/selenium.py", line 214, in do_command
    response = conn.getresponse()
  File "/usr/lib/python2.6/httplib.py", line 990, in getresponse
    response.begin()
  File "/usr/lib/python2.6/httplib.py", line 391, in begin
    version, status, reason = self._read_status()
  File "/usr/lib/python2.6/httplib.py", line 349, in _read_status
    line = self.fp.readline()
  File "/usr/lib/python2.6/socket.py", line 427, in readline
    data = recv(1)
timeout: timed out

----------------------------------------------------------------------
Ran 1 test in 12.475s

FAILED (errors=1)
Destroying test database 'default'...

奇怪的是，即使抛出错误并且 Python 停止，SeleniumRC 服务器实际上也会启动 Firefox，但是那么由于 Django 已停止，我无法运行进一步的 Selenium 命令。这是 SeleniumServer 的输出：

14:21:48.362 INFO - Checking Resource aliases
14:21:48.369 INFO - Command request: getNewBrowserSession[*firefox, http://127.0.0.1:8000/, ] on session null
14:21:48.372 INFO - creating new remote session
14:21:48.443 INFO - Allocated session a3ea05a3d0eb4956ba69a67583ea49ba for http://127.0.0.1:8000/, launching...
14:21:48.533 INFO - Preparing Firefox profile...
14:21:51.473 INFO - Launching Firefox...
14:21:55.904 INFO - Got result: OK,a3ea05a3d0eb4956ba69a67583ea49ba on session a3ea05a3d0eb4956ba69a67583ea49ba

有人有什么想法吗？

Answer 1

如果其他人遇到这个问题，我可以通过在 setUp 方法中增加套接字超时来解决它。

Answer 2

这将以浮点数秒为单位的超时值来解决这个问题：

import socket

from selenium import selenium
from django.test import TestCase

class TestSelenium(TestCase):
    def setUp(self):
        socket.settimeout(30)
        # ...
        self.selenium.start()

请参阅 python stdlib 文档