Action methods in page class in Selenium Python - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

Output of action method performing click

What will be the output of the following Selenium Python code snippet when the click_login method is called?

Selenium Python

from selenium.webdriver.common.by import By

class LoginPage:
    def __init__(self, driver):
        self.driver = driver
        self.login_button = (By.ID, 'loginBtn')

    def click_login(self):
        element = self.driver.find_element(*self.login_button)
        element.click()
        return 'Clicked'

# Assume driver is a valid WebDriver instance and login button is present.

A 'Clicked'

B No output, method returns None

C Raises NoSuchElementException

D Returns the WebElement object

💡 Hint

Look at what the method returns after clicking the element.

The method finds the element and clicks it, then returns the string 'Clicked'. So the output is 'Clicked'.

❓ assertion

intermediate

Correct assertion for verifying text after action

Given a page class with a method get_welcome_message that returns the welcome text after login, which assertion correctly verifies the message is 'Welcome User'?

Selenium Python

from selenium.webdriver.common.by import By

class HomePage:
    def __init__(self, driver):
        self.driver = driver

    def get_welcome_message(self):
        return self.driver.find_element(By.ID, 'welcomeMsg').text

# After login, test calls home_page.get_welcome_message()

A assert home_page.get_welcome_message() is None

B assert 'Welcome User' in home_page.get_welcome_message()

C assert home_page.get_welcome_message() == 'Welcome User'

D assert home_page.get_welcome_message() != 'Welcome User'

💡 Hint

Check for exact equality of the returned text.

Option C asserts the returned text exactly matches 'Welcome User', which is the correct way to verify the message.

❓ locator

advanced

Best locator strategy for action method

Which locator is the best choice for an action method that clicks a submit button with a unique class name 'submit-btn'?

A By.ID, 'submit-btn'

B By.CLASS_NAME, 'submit-btn'

C By.XPATH, "//button[@class='submit-btn']"

D By.CSS_SELECTOR, 'button.submit-btn'

💡 Hint

Consider specificity and reliability of locators.

Using CSS_SELECTOR with 'button.submit-btn' is specific and reliable for a button with that class. CLASS_NAME may fail if multiple classes exist. ID is invalid if not present.

🔧 Debug

advanced

Identify error in action method

What error will occur when running this action method that tries to send keys to a text field?

Selenium Python

from selenium.webdriver.common.by import By

class SearchPage:
    def __init__(self, driver):
        self.driver = driver
        self.search_input = (By.ID, 'searchBox')

    def enter_search_term(self, term):
        element = self.driver.find_element(*self.search_input)
        element.send_keys(term)

A NoSuchElementException at runtime

B TypeError: find_element() missing 1 required positional argument

C SyntaxError due to missing colon

D AttributeError: 'tuple' object has no attribute 'send_keys'

💡 Hint

Check how find_element is called with locator tuple.

The method calls find_element with a single tuple argument instead of unpacking it with *; this causes a TypeError.

❓ framework

expert

Design pattern for reusable action methods

In a Selenium test framework using page classes, which design approach best supports reusable action methods for different pages?

A Create a BasePage class with common action methods inherited by all page classes

B Write all action methods directly in test scripts without page classes

C Use global functions outside classes for all actions

D Duplicate action methods in each page class separately

💡 Hint

Think about code reuse and maintainability.

A BasePage class with common actions inherited by all pages promotes reuse and cleaner code.