Mouse hover (move_to_element) in Selenium Python - Test Execution Trace

Test Overview

This test opens a webpage, moves the mouse pointer over a menu item to reveal a submenu, and verifies that the submenu becomes visible.

Test Code - Selenium

Selenium Python

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

class TestMouseHover(unittest.TestCase):
    def setUp(self):
        self.driver = webdriver.Chrome()
        self.driver.get('https://example.com/menu')
        self.wait = WebDriverWait(self.driver, 10)

    def test_hover_reveals_submenu(self):
        driver = self.driver
        wait = self.wait
        menu = wait.until(EC.presence_of_element_located((By.ID, 'menu-item')))
        submenu_locator = (By.ID, 'submenu-item')

        actions = ActionChains(driver)
        actions.move_to_element(menu).perform()

        submenu = wait.until(EC.visibility_of_element_located(submenu_locator))
        self.assertTrue(submenu.is_displayed(), 'Submenu should be visible after hover')

    def tearDown(self):
        self.driver.quit()

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

Execution Trace - 7 Steps

Step	Action	System State	Assertion	Result
1	Test starts and Chrome browser opens	Browser window is open and ready	-	PASS
2	Navigates to 'https://example.com/menu'	Page with menu loaded	-	PASS
3	Waits until element with ID 'menu-item' is present	Menu item element is found in DOM	Element 'menu-item' is present	PASS
4	Moves mouse pointer over the 'menu-item' element using ActionChains.move_to_element().perform()	Mouse pointer hovers over menu item, triggering submenu display	-	PASS
5	Waits until submenu element with ID 'submenu-item' becomes visible	Submenu is visible on the page	Submenu element is visible	PASS
6	Asserts that submenu.is_displayed() returns True	Submenu is confirmed visible	assertTrue(submenu.is_displayed())	PASS
7	Test ends and browser closes	Browser window closed	-	PASS

Failure Scenario

Failing Condition: Submenu does not appear after mouse hover on menu item

Execution Trace Quiz - 3 Questions

What Selenium method is used to move the mouse pointer over the menu item?

A driver.find_element().click()

B driver.execute_script()

C ActionChains.move_to_element().perform()

D WebDriverWait.until()

Key Result

Always wait explicitly for elements to be visible after mouse hover actions to ensure the UI reacts as expected before asserting.