📖 Step 7: Testing & Quality#205 / 291
Mocking
Mocking
📖One-line summary
Replacing an external API or DB with a fake for testing.
💡Easy explanation
Using fakes instead of a real server or database for testing. Like a fire drill — you simulate instead of lighting a real fire.
✨Example
Mock data instead of a real API
Mock API
{name: "Test"}
← Immediate response
Real API
{name: "Dan"}
← Server response
⚡Vibe coding prompt examples
>_
Write tests that mock API calls. Use MSW (Mock Service Worker) to fake server responses for frontend tests.
>_
Show how to mock external modules in Jest. Include examples of mocking axios, next/router, and custom hooks.
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