Assert an Element is NOT present python Selenium

Assert an Element is NOT present python Selenium

To assert that an element is not present using Python with Selenium, you can use the find_elements method and check if the list of found elements is empty. Here's how to do it:

Example Code

from selenium import webdriver from selenium.common.exceptions import NoSuchElementException # Initialize the WebDriver (e.g., for Chrome) driver = webdriver.Chrome() try: # Open a webpage driver.get("http://example.com") # Check for the presence of the element elements = driver.find_elements("css selector", ".your-element-selector") # Assert that the element is NOT present assert len(elements) == 0, "Element should not be present" except AssertionError as e: print(e) finally: # Close the browser driver.quit()

Explanation

  1. Import Required Modules: Import the necessary classes from Selenium.

  2. Initialize WebDriver: Create an instance of the WebDriver (e.g., Chrome).

  3. Navigate to a URL: Use driver.get() to open a specific webpage.

  4. Find Elements: Use find_elements() to search for elements matching the specified selector. This returns a list of matching elements.

  5. Assertion: Check if the length of the list is zero. If it's not, an AssertionError is raised.

  6. Cleanup: Use finally to ensure the browser closes even if an assertion fails.

Notes

  • You can use different selectors, such as id, xpath, etc., based on your requirement.
  • Make sure you handle any exceptions as needed, especially in a testing environment.
  • Adjust the selector string to match the element you want to check.

This approach will help you assert the absence of an element effectively using Selenium in Python.

Examples

  1. "Selenium Python assert element not present using find_elements"

    Description: This query involves using find_elements to check if an element is not present on the page. If the length of the list returned is zero, the element is not present.

    Code:

    from selenium import webdriver driver = webdriver.Chrome() driver.get('http://example.com') elements = driver.find_elements_by_id('nonexistent-element') assert len(elements) == 0 driver.quit()

  2. "Python Selenium assert element is not visible on the page"

    Description: This query focuses on asserting that an element is not visible on the page using find_elements and checking if the length of the list is zero.

    Code:

    from selenium import webdriver driver = webdriver.Chrome() driver.get('http://example.com') elements = driver.find_elements_by_css_selector('.hidden-element') assert len(elements) == 0 or not elements[0].is_displayed() driver.quit()

  3. "Selenium Python assert element is not in DOM"

    Description: This query involves asserting that an element is not in the DOM by using a try-except block and catching a NoSuchElementException.

    Code:

    from selenium import webdriver from selenium.common.exceptions import NoSuchElementException driver = webdriver.Chrome() driver.get('http://example.com') try: driver.find_element_by_name('nonexistent') assert False, "Element should not be present" except NoSuchElementException: pass driver.quit()

  4. "Selenium Python check element is not present using WebDriverWait"

    Description: This query uses WebDriverWait to wait for a condition where an element is not present.

    Code:

    from selenium import webdriver from selenium.webdriver.common.by import By from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.support import expected_conditions as EC from selenium.common.exceptions import TimeoutException driver = webdriver.Chrome() driver.get('http://example.com') try: WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.ID, 'nonexistent'))) assert False, "Element should not be present" except TimeoutException: pass driver.quit()

  5. "Python Selenium verify element does not exist using page source"

    Description: This query checks the page source for the absence of a specific element by searching for its identifier string.

    Code:

    from selenium import webdriver driver = webdriver.Chrome() driver.get('http://example.com') assert 'nonexistent-element' not in driver.page_source driver.quit()

  6. "Selenium Python assert element not present with implicit wait"

    Description: This query involves using implicit waits to give Selenium time to find an element, then asserting that the element is not present.

    Code:

    from selenium import webdriver from selenium.common.exceptions import NoSuchElementException driver = webdriver.Chrome() driver.implicitly_wait(5) driver.get('http://example.com') try: driver.find_element_by_xpath('//div[@id="nonexistent"]') assert False, "Element should not be present" except NoSuchElementException: pass driver.quit()

  7. "Selenium Python assert element is not present using find_elements_by_xpath"

    Description: This query uses find_elements_by_xpath to check that an element is not present by asserting the returned list is empty.

    Code:

    from selenium import webdriver driver = webdriver.Chrome() driver.get('http://example.com') elements = driver.find_elements_by_xpath('//div[@id="nonexistent"]') assert len(elements) == 0 driver.quit()

  8. "Selenium Python assert an element is not present in a frame"

    Description: This query involves switching to a frame and then checking for the absence of an element within that frame.

    Code:

    from selenium import webdriver from selenium.common.exceptions import NoSuchElementException driver = webdriver.Chrome() driver.get('http://example.com') driver.switch_to.frame('frame-name') try: driver.find_element_by_id('nonexistent-element') assert False, "Element should not be present in frame" except NoSuchElementException: pass driver.switch_to.default_content() driver.quit()

  9. "Python Selenium check element not present with expected conditions"

    Description: This query uses expected_conditions.invisibility_of_element_located to check that an element is not present or not visible.

    Code:

    from selenium import webdriver from selenium.webdriver.common.by import By from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.support import expected_conditions as EC driver = webdriver.Chrome() driver.get('http://example.com') element_not_present = WebDriverWait(driver, 10).until( EC.invisibility_of_element_located((By.ID, 'nonexistent-element')) ) assert element_not_present driver.quit()

  10. "Selenium Python confirm element does not exist using NoSuchElementException"

    Description: This query uses a try-except block to confirm that an element does not exist by catching the NoSuchElementException.

    Code:

    from selenium import webdriver from selenium.common.exceptions import NoSuchElementException driver = webdriver.Chrome() driver.get('http://example.com') try: driver.find_element_by_class_name('nonexistent-class') assert False, "Element should not be present" except NoSuchElementException: pass driver.quit()

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