Test functions and classes in Selenium Python - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of a test function in Selenium Python?

A test function is a small piece of code that checks if a specific part of the web application works correctly. It uses Selenium commands to interact with the browser and assertions to verify expected results.

beginner

Why do we use test classes in Selenium Python?

Test classes group related test functions together. They help organize tests, share setup and cleanup code, and make tests easier to maintain and read.

beginner

What is the role of the setup method in a test class?

The setup method runs before each test function in the class. It prepares the environment, like opening a browser, so each test starts fresh and independent.

beginner

How do assertions work in test functions?

Assertions check if the actual result matches the expected result. If the assertion fails, the test stops and reports a failure, helping find bugs early.

beginner

Give an example of a simple test function using Selenium Python.

Example:
from selenium import webdriver

def test_title():
    driver = webdriver.Chrome()
    driver.get('https://example.com')
    assert 'Example Domain' in driver.title
    driver.quit()

This test opens a browser, goes to example.com, checks the page title, and closes the browser.

What does a test class help you do in Selenium Python?

A Automatically fix bugs in the code

B Run tests faster by skipping assertions

C Group related tests and share setup code

D Replace the need for test functions

Test classes group related tests and allow sharing setup and cleanup code to keep tests organized.

Which method usually runs before each test function in a test class?

A setup()

B teardown()

C main()

D __init__()

The setup() method prepares the environment before each test runs.

What happens if an assertion fails in a test function?

A The test continues running

B The test passes anyway

C The browser closes automatically

D The test stops and reports failure

An assertion failure stops the test and reports the failure to help identify issues.

Which Selenium command opens a web page in a browser?

A driver.open()

B driver.get()

C driver.load()

D driver.start()

driver.get(url) opens the specified web page in the browser.

Why is it important to close the browser after a test?

A To save computer memory and avoid interference with other tests

B To speed up the test execution

C To automatically fix errors

D To restart the test automatically

Closing the browser frees resources and ensures tests do not affect each other.

Explain how you would organize multiple Selenium tests using test functions and classes.

Think about keeping tests clean and easy to manage.

Describe the role of assertions in test functions and what happens when they fail.

Assertions are like checkpoints in your test.