Case Study: Automated Testing

Optimizing Selenium Tests

One effective technique for improving efficiency in Selenium automated QA testing is implementing the Page Object Model (POM) design pattern. This approach enhances test maintenance, reduces code duplication and improves overall test organization. Here's an example of how to implement POM in Python with Selenium:

1. Create a base page class:

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 find_element(self, locator, timeout=10):
        return WebDriverWait(self.driver, timeout).until(
            EC.presence_of_element_located(locator)
        )

    def click_element(self, locator):
        self.find_element(locator).click()

    def input_text(self, locator, text):
        self.find_element(locator).send_keys(text)

2. Create a specific page class:

from selenium.webdriver.common.by import By
from base_page import BasePage

class LoginPage(BasePage):
    USERNAME_FIELD = (By.ID, "username")
    PASSWORD_FIELD = (By.ID, "password")
    LOGIN_BUTTON = (By.CSS_SELECTOR, "button[type='submit']")

    def enter_username(self, username):
        self.input_text(self.USERNAME_FIELD, username)

    def enter_password(self, password):
        self.input_text(self.PASSWORD_FIELD, password)

    def click_login(self):
        self.click_element(self.LOGIN_BUTTON)

    def login(self, username, password):
        self.enter_username(username)
        self.enter_password(password)
        self.click_login()

3. Use the page object in your test:

from selenium import webdriver
from login_page import LoginPage

def test_login():
    driver = webdriver.Chrome()
    login_page = LoginPage(driver)
    driver.get("https://example.com/login")
    login_page.login("testuser", "password123")
    # Add assertions here
    driver.quit()

This approach offers several benefits:

• Improved maintainability: Changes to the UI only require updates in one place
• Reduced code duplication: Common actions are defined once in the page object
• Better readability: Test scripts become more concise and easier to understand
• Enhanced reusability: Page objects can be used across multiple test cases

By implementing POM, you can significantly improve the efficiency and maintainability of your Selenium automated QA tests.