Использование PhantomJS вместо Selenium Firefox

Question

Я использую простой тест, сгенерированный на Python, используя драйвер Selenium Firefox. Я хотел бы сделать Firefox тихим, поэтому я использовал PhantomJS. Код отлично работает с Firefox, но это не относится к PhantomJS.

# -*- coding: utf-8 -*- 
from selenium import webdriver 
from selenium.webdriver.common.by import By 
from selenium.webdriver.common.keys import Keys 
from selenium.webdriver.support.ui import Select 
from selenium.common.exceptions import NoSuchElementException 
from selenium.common.exceptions import NoAlertPresentException 

import unittest, time, re 

class Webdriver(unittest.TestCase): 
    def setUp(self): 
     #self.driver = webdriver.Firefox() 
     self.driver = webdriver.PhantomJS() 
     self.driver.implicitly_wait(30) 
     self.base_url = "https://www.google.fr/" 
     self.verificationErrors = [] 
     self.accept_next_alert = True 

    def test_webdriver(self): 
     driver = self.driver 
     driver.get(self.base_url + "/?gfe_rd=cr&ei=SuqkVv2gJ4_u8wfRjbnIBg&gws_rd=ssl") 
     driver.find_element_by_id("lst-ib").clear() 
     driver.find_element_by_id("lst-ib").send_keys("this is a test") 

    def is_element_present(self, how, what): 
     try: self.driver.find_element(by=how, value=what) 
     except NoSuchElementException as e: return False 
     return True 

    def is_alert_present(self): 
     try: self.driver.switch_to_alert() 
     except NoAlertPresentException as e: return False 
     return True 

    def close_alert_and_get_its_text(self): 
     try: 
      alert = self.driver.switch_to_alert() 
      alert_text = alert.text 
      if self.accept_next_alert: 
       alert.accept() 
      else: 
       alert.dismiss() 
      return alert_text 
     finally: self.accept_next_alert = True 

    def tearDown(self): 
     self.driver.quit() 
     self.assertEqual([], self.verificationErrors) 

if __name__ == "__main__": 
    unittest.main() 

Это то, что я получил, как ошибка:

E 
====================================================================== 
ERROR: test_webdriver (__main__.Webdriver) 
---------------------------------------------------------------------- 
Traceback (most recent call last): 
    File "webdriver.py", line 23, in test_webdriver 
    driver.find_element_by_id("lst-ib").clear() 
    File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 234, in find_element_by_id 
    return self.find_element(by=By.ID, value=id_) 
    File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 712, in find_element 
    {'using': by, 'value': value})['value'] 
    File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 201, in execute 
    self.error_handler.check_response(response) 
    File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/errorhandler.py", line 188, in check_response 
    raise exception_class(message, screen, stacktrace) 
NoSuchElementException: Message: {"errorMessage":"Unable to find element with id 'lst-ib'","request":{"headers":{"Accept":"application/json","Accept-Encoding":"identity","Connection":"close","Content-Length":"87","Content-Type":"application/json;charset=UTF-8","Host":"127.0.0.1:35319","User-Agent":"Python-urllib/2.7"},"httpVersion":"1.1","method":"POST","post":"{\"using\": \"id\", \"sessionId\": \"d34495b0-c39c-11e5-84b8-adc96a3fa6c2\", \"value\": \"lst-ib\"}","url":"/element","urlParsed":{"anchor":"","query":"","file":"element","directory":"/","path":"/element","relative":"/element","port":"","host":"","password":"","user":"","userInfo":"","authority":"","protocol":"","source":"/element","queryKey":{},"chunks":["element"]},"urlOriginal":"/session/d34495b0-c39c-11e5-84b8-adc96a3fa6c2/element"}} 


---------------------------------------------------------------------- 
Ran 1 test in 33.627s 

FAILED (errors=1) 

EDIT

После ответа @alecxe, добавление агента к PhantomJS работал на некоторых тестах, но не с другими ,

Сообщение об ошибке:

Message:{ 
    "errorMessage":"Element is not currently visible and may not be manipulated", 
    "request":{ 
     "headers":{ 
     "Accept":"application/json", 
     "Accept-Encoding":"identity", 
     "Connection":"close", 
     "Content-Length":"81", 
     "Content-Type":"application/json;charset=UTF-8", 
     "Host":"127.0.0.1:41594", 
     "User-Agent":"Python-urllib/2.7" 
     }, 
     "httpVersion":"1.1", 
     "method":"POST", 
     "post":"{\"sessionId\": \"074c7810-c3bf-11e5-beca-8f942aed378d\", \"id\": \":wdc:1453766104559\"}", 
     "url":"/click", 
     "urlParsed":{ 
     "anchor":"", 
     "query":"", 
     "file":"click", 
     "directory":"/", 
     "path":"/click", 
     "relative":"/click", 
     "port":"", 
     "host":"", 
     "password":"", 
     "user":"", 
     "userInfo":"", 
     "authority":"", 
     "protocol":"", 
     "source":"/click", 
     "queryKey":{ 

     }, 
     "chunks":[ 
      "click" 
     ] 
     }, 
     "urlOriginal":"/session/074c7810-c3bf-11e5-beca-8f942aed378d/element/%3Awdc%3A1453766104559/click" 
    } 
} 

Answer 1

Притворись не быть PhantomJS с пользовательским User-Agent заголовком:

dcap = dict(webdriver.DesiredCapabilities.PHANTOMJS) 
dcap["phantomjs.page.settings.userAgent"] = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.57 Safari/537.36" 
self.driver = webdriver.PhantomJS(desired_capabilities=dcap) 

работал для меня.

---

Вы также можете улучшить свои тесты, добавив fluent explicit waits. Например, ждет элемента видимого:

from selenium.webdriver.common.by import By 
from selenium.webdriver.support.ui import WebDriverWait 
from selenium.webdriver.support import expected_conditions as EC 

element = WebDriverWait(driver, 10).until(
    EC.visibility_of_element_located((By.ID, "lst-ib")) 
) 
element.clear() 
element.send_keys("this is a test")