✅ Using unittest Framework with Selenium in Python

🔧 1. What is unittest?

Python’s built-in unittest module is a framework for writing and running tests. It helps structure test cases and reports results clearly.

🌐 What is Selenium?

Selenium is a powerful tool for automating web browsers, widely used for testing web applications.

🧱 Basic Project Structure

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project/

├── tests/

│   └── test_login.py

├── requirements.txt

└── ...

📦 Install Required Packages

Make sure you have the required libraries:

bash

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pip install selenium

You’ll also need a WebDriver (like ChromeDriver or GeckoDriver) installed and added to your system’s PATH.

🧪 Sample Test with unittest + Selenium

python

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import unittest

from selenium import webdriver

from selenium.webdriver.common.by import By

from selenium.webdriver.chrome.service import Service

from selenium.webdriver.common.keys import Keys

import time

class LoginTest(unittest.TestCase):

    def setUp(self):

        # Set up the WebDriver

        self.driver = webdriver.Chrome()  # or use Service(ChromeDriverManager().install())

        self.driver.get("https://example.com/login")  # Replace with your login page URL

    def test_login_valid_user(self):

        driver = self.driver

        # Locate input fields and enter values

        driver.find_element(By.ID, "username").send_keys("testuser")

        driver.find_element(By.ID, "password").send_keys("password123")

        driver.find_element(By.ID, "login-button").click()

        time.sleep(2)  # Wait for login response

        self.assertIn("dashboard", driver.current_url)  # Assertion: did we reach dashboard?

    def tearDown(self):

        self.driver.quit()

if __name__ == "__main__":

    unittest.main()

⚙️ How to Run the Tests

From your terminal:

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python tests/test_login.py

You’ll see output like:

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.

----------------------------------------------------------------------

Ran 1 test in 3.001s

OK

💡 Best Practices

Use setUpClass and tearDownClass for setup shared across tests.

Use explicit waits (WebDriverWait) instead of time.sleep() for reliability.

Organize tests in separate files and use test discovery (python -m unittest discover).

Integrate with CI tools (e.g., GitHub Actions, Jenkins) for automated testing.

🚀 Advanced Tips

Use Page Object Model (POM) to separate page logic from test logic.

Use headless mode for faster testing (e.g., webdriver.Chrome(options=opts)).

Combine with pytest if you want more advanced test features.

✅ Conclusion

Using unittest with Selenium in Python gives you a solid foundation for writing maintainable, automated browser tests. It’s ideal for testing login forms, workflows, and UI behavior—all within Python’s standard testing framework.

Learn Selenium Python Training in Hyderabad

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June 21, 2025

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