https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:playing-games-with-functions/x5279a44ae0ab15d6:edge-cases/v/unit-testing 2024-11-25T20:04:00.122748014Z Unit testing How do teams of programmers continuously write and revise code without breaking things? Unit tests define a function's expected behavior and then enforce that those requirements are met. View the program used in this video at: https://www.khanacademy.org/python-program/unit-testing/6443282411208704 Kim Merrill video https://cdn.kastatic.org/ka_thumbnails_cache/9f3932d5-9a60-4e8c-8cad-ffaaf66f4c58_1280_720_base.png Unit testing How do teams of programmers continuously write and revise code without breaking things? Unit tests define a function's expected behavior and then enforce that those requirements are met. View the program used in this video at: https://www.khanacademy.org/python-program/unit-testing/6443282411208704 https://cdn.kastatic.org/ka-youtube-converted/3OmfTIf-SOU.mp4/3OmfTIf-SOU.mp4 285 Testing and debugging https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:playing-games-with-functions/x5279a44ae0ab15d6:edge-cases/a/test-cases 2024-11-26T05:54:57.866823847Z Test cases Learn how to identify test cases for a function based on its requirements. Apply test cases to catch bugs early. article https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:playing-games-with-functions/x5279a44ae0ab15d6:edge-cases/e/identify-edge-cases 2025-09-12T02:00:44.915137743Z Identify test cases Identify test cases for a function based on its definition. Nathaniel Shak exercise https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:playing-games-with-functions/x5279a44ae0ab15d6:edge-cases/v/debugging-with-test-cases 2024-12-02T21:11:23.197431827Z Debugging with test cases Code along with a software engineer in this debugging worked example using test cases. Apply test cases to debug logic errors in a racing game. Practice narrowing down the bug to a single function so you can review the function in isolation. View the program used in this video at: https://www.khanacademy.org/python-program/race-track-debugging-with-test-cases/5936406120546304 Kim Merrill video https://cdn.kastatic.org/ka_thumbnails_cache/39346989-c53b-4c65-89dd-7ba854c3baf8_1280_720_base.png Debugging with test cases Code along with a software engineer in this debugging worked example using test cases. Apply test cases to debug logic errors in a racing game. Practice narrowing down the bug to a single function so you can review the function in isolation. View the program used in this video at: https://www.khanacademy.org/python-program/race-track-debugging-with-test-cases/5936406120546304 https://cdn.kastatic.org/ka-youtube-converted/eNmRjbVIZ0s.mp4/eNmRjbVIZ0s.mp4 247 Testing and debugging https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:playing-games-with-functions/x5279a44ae0ab15d6:edge-cases/pc/dice-21 2025-07-30T22:25:20.428631657Z Challenge: Dice 21 Practice test cases to debug a dice-rolling game. challenge