How to resolve error in Selenium Webdriver

Question

I am automatating a test using Selenium Webdriver using Python language. My code is -:

import unittest

from selenium import webdriver

from selenium.webdriver.common.action_chains import ActionChains

 

class JqueryUiTests(unittest.TestCase):

 

    def setUp(self):

        self.driver = webdriver.Chrome()

    def test_tooltip(self):

        driver = self.driver

        driver.get('https://jqueryui.com/tooltip/')

        frame=driver.find_element_by_tag_name('iframe')

        driver.switch_to_frame(frame)

        tooltip_input=driver.find_element_by_xpath("//input[@id='age']")

        actions=ActionChains(driver)

        actions.move_to_element(tooltip_input)

        actions.perform()

        tooltip_message=driver.find_element_by_xpath("//div[@role='tooltip']")

        message=tooltip_message.text

        self.assertEqual(message,'We ask for your age only for statistical purposes.')

    def tearDown(self):

        self.driver.close()       

if __name__ == "__main__":

    unittest.main()

The error message that i get is

  File "E:\Python Workspace\example.py", line 30, in test_tooltip

    tooltip_message=driver.find_element_by_xpath("//div[@role='tooltip']")

  File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 253, in find_element_by_xpath

    return self.find_element(by=By.XPATH, value=xpath)

  File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 707, in find_element

    {'using': by, 'value': value})['value']

  File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 196, in execute

    self.error_handler.check_response(response)

  File "C:\Python27\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 181, in check_response

    raise exception_class(message, screen, stacktrace)

NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"//div[@role='tooltip']"}

  (Session info: chrome=55.0.2883.87)

  (Driver info: chromedriver=2.26.436362 (5476ec6bf7ccbada1734a0cdec7d570bb042aa30),platform=Windows NT 6.1.7601 SP1 x86_64)

Answer 1

1. First of all, dont use xpaths. they are slooooooooooooooww
2. the message is clear so either your xpath is wrong or the tooltip aint displayed yet 
3. read about Webdriver waits to wait for an element to appear (WebDriverWait)
4.   self.driver.close() -- what is this ... quit()

you can put some sleep betwen but this is not good programming , using waits

actions.perform()

tooltip_message=driver.find_element_by_xpath("//div[@role='tooltip']")