我有一个问题:我想测试“select”和“input”。我可以像下面的代码那样写吗: 原始代码:
12 class Sinaselecttest(unittest.TestCase):
13
14 def setUp(self):
15 binary = FirefoxBinary('/usr/local/firefox/firefox')
16 self.driver = webdriver.Firefox(firefox_binary=binary)
17
18 def test_select_in_sina(self):
19 driver = self.driver
20 driver.get("https://www.sina.com.cn/")
21 try:
22 WebDriverWait(driver,30).until(
23 ec.visibility_of_element_located((By.XPATH,"/html/body/div[9]/div/div[1]/form/div[3]/input"))
24 )
25 finally:
26 driver.quit()
# #测试select功能
27 select=Select(driver.find_element_by_xpath("//*[@id='slt_01']")).select_by_value("微博")
28 element=driver.find_element_by_xpath("/html/body/div[9]/div/div[1]/form/div[3]/input")
29 element.send_keys("杨幂")
30 driver.find_element_by_xpath("/html/body/div[9]/div/div[1]/form/input").click()
31 driver.implicitly_wait(5)
32 def tearDown(self):
33 self.driver.close()
我想测试Selenium的“选择”功能。所以我选择新浪网站选择一个选项并在textarea中输入文本。然后搜索它。但是当我运行这个测试时,它有错误:
Traceback (most recent call last):
File "test_sina_select.py", line 32, in tearDown
self.driver.close()
File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 688, in close
self.execute(Command.CLOSE)
File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 319, in execute
response = self.command_executor.execute(driver_command, params)
File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/remote_connection.py", line 376, in execute
return self._request(command_info[0], url, body=data)
File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/remote_connection.py", line 399, in _request
resp = self._conn.request(method, url, body=body, headers=headers)
File "/usr/lib/python2.7/site-packages/urllib3/request.py", line 68, in request
**urlopen_kw)
File "/usr/lib/python2.7/site-packages/urllib3/request.py", line 81, in request_encode_url
return self.urlopen(method, url, **urlopen_kw)
File "/usr/lib/python2.7/site-packages/urllib3/poolmanager.py", line 247, in urlopen
response = conn.urlopen(method, u.request_uri, **kw)
File "/usr/lib/python2.7/site-packages/urllib3/connectionpool.py", line 617, in urlopen
release_conn=release_conn, **response_kw)
File "/usr/lib/python2.7/site-packages/urllib3/connectionpool.py", line 617, in urlopen
release_conn=release_conn, **response_kw)
File "/usr/lib/python2.7/site-packages/urllib3/connectionpool.py", line 617, in urlopen
release_conn=release_conn, **response_kw)
File "/usr/lib/python2.7/site-packages/urllib3/connectionpool.py", line 597, in urlopen
_stacktrace=sys.exc_info()[2])
File "/usr/lib/python2.7/site-packages/urllib3/util/retry.py", line 271, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
MaxRetryError: HTTPConnectionPool(host='127.0.0.1', port=51379): Max retries exceeded with url: /session/2e64d2a1-3c7f-4221-96fe-9d0b1c102195/window (Caused by ProtocolError('Connection aborted.', error(111, 'Connection refused')))
----------------------------------------------------------------------
Ran 1 test in 72.106s
谁能告诉我为什么?谢谢
原文由 Stackoverflow 发布,翻译遵循 CC BY-SA 4.0 许可协议
这个错误信息…
…意味着调用
self.driver.close()
方法失败引发 MaxRetryError 。几件事:
首先也是最重要的是,根据讨论, 最大重试次数超出异常令人困惑, 回溯 有些误导。为方便用户,请求包装了异常。原始异常是显示的消息的一部分。
请求从不重试(它设置
retries=0
为 urllib3 的HTTPConnectionPool
),所以如果没有 MaxRetryError 和 HTTPConnectionPool 关键字,错误会更加规范。因此,理想的 Traceback 应该是:但是@sigmavirus24 在他的 评论 中再次提到 ……包装这些异常会产生一个很好的 API 但调试体验很差……
向前推进的计划是 尽可能向下遍历到最低级别的异常并使用它。
最后,通过重写一些与实际连接被拒绝错误无关的异常来解决此问题。
解决方案
Even before
self.driver.close()
withintearDown(self)
is invoked, the try{} block withintest_select_in_sina(self)
includes finally{} where you havedriver.quit()
which is用于调用 /shutdown 端点,随后 Web 驱动程序和客户端实例被销毁,完全关闭所有页面/选项卡/窗口。因此不再存在连接。在这种情况下,当您调用
self.driver.close()
时, python 客户端无法找到任何活动连接来启动关闭。因此您会看到错误。因此,一个简单的解决方案是删除行
driver.quit()
即删除finally
块。TL;博士
根据 Selenium 3.14.1 的 _发行说明_:
Merge 是: 修复urllib3无法设置超时!
结论
升级到 Selenium 3.14.1 后,您将能够设置超时并查看规范的 _回溯_,并能够采取所需的操作。
参考
一些相关的参考资料: