Base page class in Selenium Python - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this Selenium base page class method?

Consider this base page class method that waits for an element to be visible and returns its text.
What will be printed when calling get_element_text() if the element is visible and contains 'Hello World'?

Selenium Python

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

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

    def get_element_text(self, locator):
        element = WebDriverWait(self.driver, 10).until(
            EC.visibility_of_element_located(locator)
        )
        return element.text

# Usage example:
# base_page = BasePage(driver)
# print(base_page.get_element_text((By.ID, 'greeting')))

A "Hello World"

B "" (empty string)

C TimeoutException

D NoSuchElementException

💡 Hint

The method waits until the element is visible before getting text.

The method waits up to 10 seconds for the element to be visible. If visible, it returns the element's text, which is 'Hello World'.

❓ locator

intermediate

Which locator is best practice for a base page class method?

You want to write a base page method that clicks a button reliably. Which locator is best to use?

A By.ID, "submit"

B By.CSS_SELECTOR, "button.submit-btn"

C By.XPATH, "//button[text()='Submit']"

D By.CLASS_NAME, "btn"

💡 Hint

IDs are unique and fast to locate.

Using By.ID is best practice because IDs are unique on the page and locating by ID is faster and more reliable.

❓ assertion

advanced

Which assertion correctly verifies a page title in a base page test?

You want to assert that the page title is exactly 'Dashboard'. Which assertion is correct?

Selenium Python

def test_page_title(base_page):
    title = base_page.driver.title
    # Which assertion below is correct?

A assert 'Dashboard' in title

B assert title == 'Dashboard'

C assert title.startswith('Dashboard')

D assert title != 'Dashboard'

💡 Hint

Exact match is needed for this test.

The assertion must check that the title equals 'Dashboard' exactly, so option B is correct.

🔧 Debug

advanced

Why does this base page method raise TimeoutException?

This base page method waits for an element to be clickable but raises TimeoutException every time.
What is the likely cause?

Selenium Python

def click_element(self, locator):
    element = WebDriverWait(self.driver, 5).until(
        EC.element_to_be_clickable(locator)
    )
    element.click()

A The wait time of 5 seconds is too long

B The element is visible but disabled

C The locator is incorrect or does not match any element

D The driver is not initialized

💡 Hint

TimeoutException means the condition was never met.

TimeoutException usually means the locator did not find any clickable element within the wait time, often due to wrong locator.

❓ framework

expert

What is the main benefit of using a base page class in Selenium tests?

Choose the best explanation for why a base page class is used in Selenium test automation frameworks.

A It allows running tests in parallel without conflicts

B It automatically generates test reports after each test run

C It replaces the need for explicit waits by handling all waits internally

D It centralizes common page actions and locators to reduce code duplication and improve maintainability

💡 Hint

Think about code reuse and organization.

A base page class holds common methods and locators shared by multiple pages, reducing repeated code and making maintenance easier.