Radio button interactions in Selenium Python - Test Execution Trace

Test Overview

This test opens a webpage with radio buttons, selects a specific radio button, and verifies that it is selected correctly.

Test Code - Selenium

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
import unittest

class RadioButtonTest(unittest.TestCase):
    def setUp(self):
        self.driver = webdriver.Chrome()
        self.driver.get('https://example.com/radio-buttons')

    def test_select_radio_button(self):
        driver = self.driver
        wait = WebDriverWait(driver, 10)
        # Wait until radio button is clickable
        radio_button = wait.until(EC.element_to_be_clickable((By.ID, 'option2')))
        radio_button.click()
        # Verify the radio button is selected
        self.assertTrue(radio_button.is_selected(), 'Radio button option2 should be selected')

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

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

Execution Trace - 6 Steps

Step	Action	System State	Assertion	Result
1	Test starts and Chrome browser opens	Browser window is open, ready to load URL	—	PASS
2	Navigates to 'https://example.com/radio-buttons'	Page with radio buttons loads fully	—	PASS
3	Waits until radio button with ID 'option2' is clickable	Radio button 'option2' is visible and interactable	—	PASS
4	Clicks on radio button with ID 'option2'	Radio button 'option2' is selected	—	PASS
5	Checks if radio button 'option2' is selected	Radio button 'option2' remains selected	Assert radio_button.is_selected() is True	PASS
6	Test ends and browser closes	Browser window closed	—	PASS

Failure Scenario

Failing Condition: Radio button with ID 'option2' is not found or not selectable

Execution Trace Quiz - 3 Questions

What does the test verify after clicking the radio button?

A That the radio button is selected

B That the radio button is visible

C That the radio button is disabled

D That the radio button is not present

Key Result

Always wait explicitly for elements to be present before interacting to avoid timing issues and flaky tests.

Practice

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

easy

A. Checks if the radio button is currently selected

B. Clicks the radio button to select it

C. Returns the text label of the radio button

D. Clears the selection of the radio button

Solution

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

   This method checks the current state of a radio button or checkbox to see if it is selected or not.

2. Step 2: Compare with other actions

   Unlike click() which changes the state, is_selected() only returns a boolean indicating selection status.

3. Final Answer:

   Checks if the radio button is currently selected -> Option A

4. Quick Check:

   Check selection status = C [OK]

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

Common Mistakes:

• Confusing is_selected() with click()
• Expecting is_selected() to select the button
• Using is_selected() to get button text

2. Which of the following is the correct way to select a radio button with Selenium in Python?

easy

A. driver.find_element(By.ID, 'option1').choose()

B. driver.find_element(By.ID, 'option1').select()

C. driver.find_element(By.ID, 'option1').check()

D. driver.find_element(By.ID, 'option1').click()

Solution

1. Step 1: Identify the correct method to select a radio button

   In Selenium, click() is used to select radio buttons or checkboxes.

2. Step 2: Verify method names

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

3. Final Answer:

   driver.find_element(By.ID, 'option1').click() -> Option D

4. Quick Check:

   Use click() to select radio buttons = A [OK]

Hint: Use click() to select radio buttons, no select() method [OK]

Common Mistakes:

• Using non-existent methods like select()
• Trying to assign value instead of clicking
• Confusing with form select elements

3. Consider this code snippet:

radio1 = driver.find_element(By.ID, 'r1')
radio2 = driver.find_element(By.ID, 'r2')
radio1.click()
print(radio1.is_selected())
print(radio2.is_selected())

What will be the output if these are radio buttons in the same group?

medium

A. True\nFalse

B. False\nTrue

C. True\nTrue

D. False\nFalse

Solution

1. Step 1: Understand radio button group behavior

   Clicking one radio button selects it and deselects others in the same group.

2. Step 2: Analyze the code output

   After clicking radio1, radio1.is_selected() returns True, and radio2.is_selected() returns False.

3. Final Answer:

   True False -> Option A

4. Quick Check:

   One selected, others deselected = B [OK]

Hint: Only one radio button in group is selected at a time [OK]

Common Mistakes:

• Assuming both radio buttons can be selected
• Confusing is_selected() output order
• Ignoring group behavior of radio buttons

4. You wrote this code to select a radio button:

radio = driver.find_element(By.NAME, 'gender')
radio.click()

But it always selects the first radio button in the group, not the intended one. What is the likely problem?

medium

A. The click() method is incorrect for radio buttons

B. Using By.NAME returns multiple elements; need to specify which one

C. Radio buttons cannot be selected by Selenium

D. The radio button is disabled and cannot be clicked

Solution

1. Step 1: Understand how find_element(By.NAME) works

   This method returns the first matching element with the given name attribute.

2. Step 2: Identify the issue with multiple radio buttons sharing the same name

   Radio buttons in a group share the same name, so you must select the correct one by index or another attribute.

3. Final Answer:

   Using By.NAME returns multiple elements; need to specify which one -> Option B

4. Quick Check:

   By.NAME returns first element only = A [OK]

Hint: Use find_elements and index to pick correct radio button [OK]

Common Mistakes:

• Assuming By.NAME returns all elements
• Using click() incorrectly
• Ignoring radio button group naming

5. You want to write a test to verify that selecting one radio button deselects the others in the same group. Which code snippet correctly performs this check?

hard

A. radio_buttons = driver.find_elements(By.ID, 'color')
radio_buttons[0].click()
assert radio_buttons[1].is_selected()

B. radio_buttons = driver.find_element(By.NAME, 'color')
radio_buttons.click()
assert radio_buttons.is_selected()

C. radio_buttons = driver.find_elements(By.NAME, 'color')
radio_buttons[1].click()
assert radio_buttons[1].is_selected() and not radio_buttons[0].is_selected()

D. radio_buttons = driver.find_elements(By.CLASS_NAME, 'color')
radio_buttons.click()
assert radio_buttons[0].is_selected()

Solution

1. Step 1: Select all radio buttons by group name

   Use find_elements(By.NAME, 'color') to get all radio buttons in the group.

2. Step 2: Click one button and assert selection states

   Click the second button, then assert it is selected and the first is not.

3. Final Answer:

   radio_buttons = driver.find_elements(By.NAME, 'color') radio_buttons[1].click() assert radio_buttons[1].is_selected() and not radio_buttons[0].is_selected() -> Option C

4. Quick Check:

   Click one, check selected and deselected = D [OK]

Hint: Use find_elements and assert one selected, others not [OK]

Common Mistakes:

• Using find_element instead of find_elements
• Not checking deselection of other buttons
• Wrong locator type for radio group