I need to change this code, but it has no test!

Slides of my talk on approval tests.

More details on understandlegacycode.com/approval-tests.

Things I used for this presentation

• vscode-slides, a VS Code extension to use my editor as a presentation tool
• abracadabra, a VS Code extension to execute automated refactorings in JavaScript. This is how I do "Extract Variable" and "Inline Variable" during the talk.