Lesson 27 of 79 · 15 minutes

When code runs but is wrong: Test Kitchen

The oven runs without a single complaint, and still burns the food. Find out why, by testing it.

What you'll learn

• When there's no error, but it's wrong
• What testing means
• Bugs hide at the edges
• Three kinds of test
• Fixing a limit

Each idea opens with a short narrated video, about 3 minutes in all. Then you put it to work in the game.

The six levels

1. It Runs, But... Change it
2. Low, Middle, High Copy and type
3. The Exact Limit Fill the gap
4. Your Own Tests Write it
5. Burnt at the Edge Fix it
6. The Hidden Flaw Boss level

The levels go from changing one word, to writing the code on your own. The boss level changes every time you play.

New to Python? Start with the free games in Module 1.