Screenshot on failure in Selenium Python - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of taking a screenshot on test failure in Selenium?

Taking a screenshot on test failure helps to capture the exact state of the web page when the test failed. This makes it easier to understand what went wrong and debug the issue.

beginner

Which Selenium WebDriver method is used to capture a screenshot in Python?

The method driver.save_screenshot('filename.png') is used to capture and save a screenshot of the current browser window.

intermediate

How can you automatically take a screenshot only when a test fails in Python unittest?

You can override the tearDown method to check if the test failed, and if so, call driver.save_screenshot() to save the screenshot.

beginner

Why is it important to name screenshot files with timestamps or test names?

Naming screenshots with timestamps or test names prevents overwriting files and helps quickly identify which test and time the screenshot belongs to.

intermediate

What is a simple way to integrate screenshot capture on failure in pytest?

In pytest, you can use the request.node.rep_call.failed hook in a fixture to detect failure and then call driver.save_screenshot() to save the screenshot.

Which Selenium WebDriver method saves a screenshot in Python?

A get_screenshot()

B take_screenshot()

C capture_screen()

D save_screenshot()

The correct method is save_screenshot() which saves the current browser window as an image file.

When should you take a screenshot during automated testing?

A Only when the test fails

B Before starting the test

C Only when the test passes

D After every test step

Taking screenshots on failure helps capture the error state for debugging.

In unittest, which method is best to override to add screenshot capture on failure?

A tearDown()

B setUp()

C runTest()

D startTest()

The tearDown() method runs after each test and is ideal to check for failure and capture screenshots.

Why add timestamps to screenshot filenames?

A To make files smaller

B To prevent overwriting and identify when the screenshot was taken

C To encrypt the file

D To improve screenshot quality

Timestamps help avoid overwriting files and make it easier to track when the screenshot was taken.

Which Python testing framework allows using fixtures to capture screenshots on failure?

A unittest

B nose

C pytest

D doctest

pytest supports fixtures that can detect test failure and capture screenshots automatically.

Explain how to implement automatic screenshot capture on test failure using Selenium with Python unittest.

Think about what happens after each test and how to detect failure.

Describe best practices for naming and storing screenshots taken on test failure.

Consider how to keep screenshots easy to find and identify.