Double click in Selenium Python

Introduction

Double click is used to perform a quick two-click action on a web element. It helps test features that respond to double clicks, like opening files or editing text.

When testing a button that opens a menu on double click.

When verifying that double clicking a list item selects it.

When checking if double click triggers a special action on an image.

When automating text editing that requires double click to select a word.

Syntax

Selenium Python

from selenium.webdriver import ActionChains

actions = ActionChains(driver)
actions.double_click(element).perform()

You need to import ActionChains from Selenium.

Always call perform() to execute the double click action.

Examples

Double clicks on a button element.

Selenium Python

actions = ActionChains(driver)
actions.double_click(button).perform()

Double clicks on a text field to select text or trigger editing.

Selenium Python

actions = ActionChains(driver)
actions.double_click(text_field).perform()

Sample Program

This script opens a jQuery demo page where double clicking a box changes its color. It switches to the demo frame, double clicks the box, waits 2 seconds, then prints the new background color.

Selenium Python

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver import ActionChains
import time

# Setup driver (make sure chromedriver is in PATH)
driver = webdriver.Chrome()
driver.get('https://api.jquery.com/dblclick/')

# Switch to the frame containing the demo
frame = driver.find_element(By.CSS_SELECTOR, 'iframe.demo-frame')
driver.switch_to.frame(frame)

# Find the box to double click
box = driver.find_element(By.CSS_SELECTOR, 'div#target')

# Create action chain and double click
actions = ActionChains(driver)
actions.double_click(box).perform()

# Wait to see the color change
time.sleep(2)

# Check if color changed to rgb(255, 255, 0) (yellow)
color = box.value_of_css_property('background-color')
print(f'Background color after double click: {color}')

# Cleanup
driver.quit()

Important Notes

Make sure the element is visible and interactable before double clicking.

Use explicit waits if the element loads dynamically.

Double click may behave differently on some browsers; test accordingly.

Summary

Double click simulates two quick clicks on an element.

Use ActionChains and call double_click(element).perform().

Useful for testing UI features triggered by double clicks.

Practice

1. What does the double_click() method in Selenium's ActionChains do?

easy

A. Scrolls the page down twice

B. Clicks and holds the mouse button on an element

C. Right-clicks on a web element

D. Simulates two quick clicks on a web element

Solution

1. Step 1: Understand the purpose of double_click()

   This method is designed to simulate two quick mouse clicks on the same element, mimicking a user's double click action.

2. Step 2: Compare with other mouse actions

   Other actions like click and hold, right-click, or scrolling are different methods in Selenium and do not represent double clicking.

3. Final Answer:

   Simulates two quick clicks on a web element -> Option D

4. Quick Check:

   double_click() = two quick clicks [OK]

Hint: Double click means two fast clicks on the same spot [OK]

Common Mistakes:

• Confusing double click with right click
• Using click_and_hold instead of double_click
• Thinking double_click scrolls the page
• Assuming double_click requires multiple perform() calls

2. Which of the following is the correct syntax to perform a double click on an element stored in variable button using Selenium in Python?

easy

A. ActionChains(driver).double_click(button).perform()

B. ActionChains(driver).click(button).double_click().perform()

C. driver.double_click(button).perform()

D. ActionChains.double_click(button).perform()

Solution

1. Step 1: Identify the correct use of ActionChains

   ActionChains is instantiated with the driver, then the double_click method is called with the element, followed by perform() to execute.

2. Step 2: Check syntax correctness

   ActionChains(driver).double_click(button).perform() correctly chains these calls. Options B, C, and D misuse method calls or omit driver instantiation.

3. Final Answer:

   ActionChains(driver).double_click(button).perform() -> Option A

4. Quick Check:

   Correct chaining = ActionChains(driver).double_click(button).perform() [OK]

Hint: Always instantiate ActionChains with driver before actions [OK]

Common Mistakes:

• Calling double_click without ActionChains instance
• Trying to call double_click directly on driver
• Missing perform() at the end
• Incorrect method chaining order

3. What will be the output of the following Selenium Python code snippet?

from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.by import By

button = driver.find_element(By.ID, "btn")
actions = ActionChains(driver)
actions.double_click(button).perform()
print("Double click performed")

medium

A. Double click performed

B. SyntaxError

C. No output, code hangs

D. ElementNotInteractableException

Solution

1. Step 1: Analyze the code flow

   The code finds a button element, creates an ActionChains object, performs a double click on the button, then prints a message.

2. Step 2: Check for errors or exceptions

   Assuming the element is interactable and driver is valid, the double click will succeed and print the message.

3. Final Answer:

   Double click performed -> Option A

4. Quick Check:

   Successful double click prints message [OK]

Hint: If no errors, print statements run normally [OK]

Common Mistakes:

• Assuming double_click returns a value to print
• Ignoring element visibility or interactability
• Confusing syntax errors with runtime exceptions
• Missing import statements causing errors

4. You wrote this code to double click an element:

actions = ActionChains(driver)
actions.double_click().perform()

But it throws an error. What is the likely cause?

medium

A. driver is not initialized

B. ActionChains must be imported from selenium.webdriver.common.keys

C. Missing the target element in double_click() method

D. perform() should be called before double_click()

Solution

1. Step 1: Check method usage

   The double_click() method requires the element to double click on as an argument. Omitting it causes an error.

2. Step 2: Validate other options

   ActionChains is imported from selenium.webdriver.common.action_chains, not common.keys. perform() must be last. Driver initialization error would cause different error.

3. Final Answer:

   Missing the target element in double_click() method -> Option C

4. Quick Check:

   double_click() needs element argument [OK]

Hint: Always pass element to double_click() [OK]

Common Mistakes:

• Calling double_click() without element
• Wrong import for ActionChains
• Calling perform() too early
• Ignoring driver initialization errors

5. You want to test a web app feature that opens a hidden menu on double clicking a div with id "menu". Which Selenium Python code snippet correctly performs this test?

hard

A. menu = driver.find_element(By.ID, "menu")
menu.double_click()
assert driver.find_element(By.ID, "hidden-menu").is_displayed()

B. menu = driver.find_element(By.ID, "menu")
ActionChains(driver).double_click(menu).perform()
assert driver.find_element(By.ID, "hidden-menu").is_displayed()

C. ActionChains(driver).double_click(By.ID, "menu").perform()
assert driver.find_element(By.ID, "hidden-menu").is_displayed()

D. menu = driver.find_element(By.ID, "menu")
ActionChains.double_click(menu).perform()
assert driver.find_element(By.ID, "hidden-menu").is_displayed()

Solution

1. Step 1: Locate the element correctly

   Use driver.find_element with By.ID to get the div with id "menu".

2. Step 2: Use ActionChains instance to double click

   Create ActionChains(driver), call double_click(menu), then perform() to execute the action.

3. Step 3: Assert the hidden menu is displayed

   Check if the element with id "hidden-menu" is visible after the double click.

4. Final Answer:

   Correctly locate, double click, and assert visibility -> Option B

5. Quick Check:

   Find element + double_click + assert visible = menu = driver.find_element(By.ID, "menu") ActionChains(driver).double_click(menu).perform() assert driver.find_element(By.ID, "hidden-menu").is_displayed() [OK]

Hint: Find element first, then double click with ActionChains [OK]

Common Mistakes:

• Calling double_click directly on element
• Passing locator instead of element to double_click
• Using ActionChains class method without instance
• Skipping assertion after action