Checkbox interactions in Selenium Python - Build an Automation Script

Verify checkbox selection and deselection

Preconditions (1)

Step 1: Locate the checkbox with id 'subscribe-newsletter'

Step 2: Verify the checkbox is initially not selected

Step 3: Click the checkbox to select it

Step 4: Verify the checkbox is now selected

Step 5: Click the checkbox again to deselect it

Step 6: Verify the checkbox is now not selected

✅ Expected Result: The checkbox can be selected and deselected correctly, and the selection state changes as expected.

Automation Requirements - Selenium with Python

Assertions Needed:

Assert checkbox is initially not selected

Assert checkbox is selected after first click

Assert checkbox is not selected after second click

Best Practices:

Use explicit waits to ensure checkbox is interactable

Use By.ID locator for checkbox

Use assert statements for verification

Use try-finally or context management to close browser

Automated Solution

Selenium Python

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

# Setup WebDriver
with webdriver.Chrome() as driver:
    driver.get('https://example.com/checkbox-demo')

    wait = WebDriverWait(driver, 10)

    # Wait for checkbox to be clickable
    checkbox = wait.until(EC.element_to_be_clickable((By.ID, 'subscribe-newsletter')))

    # Verify checkbox is initially not selected
    assert not checkbox.is_selected(), 'Checkbox should be initially not selected'

    # Click to select checkbox
    checkbox.click()

    # Verify checkbox is selected
    assert checkbox.is_selected(), 'Checkbox should be selected after clicking'

    # Click again to deselect checkbox
    checkbox.click()

    # Verify checkbox is not selected
    assert not checkbox.is_selected(), 'Checkbox should be not selected after second click'

This script uses Selenium WebDriver with Python to automate the checkbox interaction test.

First, it opens the browser and navigates to the checkbox demo page.

It waits explicitly until the checkbox with id 'subscribe-newsletter' is clickable to avoid timing issues.

Then it asserts the checkbox is initially not selected.

Next, it clicks the checkbox to select it and asserts it is selected.

Then it clicks again to deselect and asserts it is not selected.

The use of with statement ensures the browser closes automatically after the test.

Common Mistakes - 3 Pitfalls

Using time.sleep() instead of explicit waits

Using incorrect locator like XPath with absolute path

Not verifying checkbox state before and after clicks

Bonus Challenge

Now add data-driven testing with 3 different checkboxes having ids 'subscribe-newsletter', 'accept-terms', and 'receive-updates'. Verify selection and deselection for each.

Show Hint

Practice

1. What does the is_selected() method do when used on a checkbox element in Selenium?

easy

A. It unchecks the checkbox if it is selected.

B. It clicks the checkbox to select it.

C. It finds the checkbox element on the page.

D. It checks if the checkbox is currently checked (selected).

Solution

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

   This method returns a boolean indicating if the checkbox is checked or not.

2. Step 2: Differentiate from other methods

   Unlike click() which changes state, is_selected() only reads the current state.

3. Final Answer:

   It checks if the checkbox is currently checked (selected). -> Option D

4. Quick Check:

   Check checkbox state = is_selected() [OK]

Hint: Remember: is_selected() reads state, click() changes it [OK]

Common Mistakes:

• Confusing is_selected() with click()
• Thinking is_selected() changes checkbox state
• Using is_selected() to find elements

2. Which of the following is the correct way to click a checkbox using Selenium in Python?

easy

A. checkbox.toggle()

B. checkbox.click()

C. checkbox.check()

D. checkbox.select()

Solution

1. Step 1: Recall Selenium method for clicking

   The standard method to simulate a mouse click on an element is click().

2. Step 2: Verify other options

   Methods like select(), check(), or toggle() do not exist in Selenium WebDriver API.

3. Final Answer:

   checkbox.click() -> Option B

4. Quick Check:

   Click checkbox = click() method [OK]

Hint: Use click() to change checkbox state, no other method works [OK]

Common Mistakes:

• Using non-existent methods like select() or check()
• Trying to assign True/False directly to checkbox
• Confusing click() with is_selected()

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

checkbox = driver.find_element(By.ID, 'subscribe')
checkbox.click()
print(checkbox.is_selected())

medium

A. True

B. False

C. None

D. Throws an exception

Solution

1. Step 1: Understand the code actions

   The code finds a checkbox by ID 'subscribe', clicks it to select, then prints if it is selected.

2. Step 2: Predict the checkbox state after click()

   Clicking a checkbox toggles it to selected if it was not selected before, so is_selected() returns True.

3. Final Answer:

   True -> Option A

4. Quick Check:

   Click then check selected = True [OK]

Hint: Click toggles checkbox, is_selected() shows True if checked [OK]

Common Mistakes:

• Assuming is_selected() returns False after click
• Thinking print outputs None
• Expecting an exception without errors in code

4. You wrote this code to select a checkbox:

checkbox = driver.find_element(By.NAME, 'agree')
if not checkbox.is_selected():
    checkbox.click()

But the checkbox is never selected after running. What is the likely problem?

medium

A. The locator By.NAME with 'agree' is incorrect or does not find the checkbox.

B. The click() method does not work on checkboxes.

C. You must use checkbox.select() instead of click().

D. The is_selected() method changes the checkbox state.

Solution

1. Step 1: Analyze the locator usage

   If the checkbox is never selected, the element might not be found correctly by By.NAME, 'agree'.

2. Step 2: Check method correctness

   click() works on checkboxes, and is_selected() only reads state, so these are not the problem.

3. Final Answer:

   The locator By.NAME with 'agree' is incorrect or does not find the checkbox. -> Option A

4. Quick Check:

   Wrong locator = no click effect [OK]

Hint: Verify locators first if click has no effect [OK]

Common Mistakes:

• Assuming click() doesn't work on checkboxes
• Using non-existent methods like select()
• Thinking is_selected() changes state

5. You want to write a Selenium test that ensures a checkbox with ID 'terms' is checked only if it is not already checked. Which code snippet correctly does this?

hard

A. checkbox = driver.find_element(By.ID, 'terms')
if checkbox.is_selected():
checkbox.click()

B. checkbox = driver.find_element(By.ID, 'terms')
checkbox.click()
assert checkbox.is_selected()

C. checkbox = driver.find_element(By.ID, 'terms')
if not checkbox.is_selected():
checkbox.click()

D. checkbox = driver.find_element(By.ID, 'terms')
checkbox.select()

Solution

1. Step 1: Understand the requirement

   The checkbox should be checked only if it is not already checked to avoid toggling it off.

2. Step 2: Analyze each option

   checkbox = driver.find_element(By.ID, 'terms') if not checkbox.is_selected(): checkbox.click() checks state and clicks only if unchecked, which is correct. checkbox = driver.find_element(By.ID, 'terms') checkbox.click() assert checkbox.is_selected() always clicks, possibly unchecking. checkbox = driver.find_element(By.ID, 'terms') if checkbox.is_selected(): checkbox.click() clicks if already checked, unchecking it. checkbox = driver.find_element(By.ID, 'terms') checkbox.select() uses a non-existent method.

3. Final Answer:

   checkbox = driver.find_element(By.ID, 'terms') if not checkbox.is_selected(): checkbox.click() -> Option C

4. Quick Check:

   Check state before click to avoid toggling off [OK]

Hint: Click only if not selected to ensure checkbox is checked [OK]

Common Mistakes:

• Clicking checkbox without checking state first
• Using non-existent methods like select()
• Clicking when checkbox is already selected