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Write unit tests for any function

Copilot 8 views 0 copies Oct 3, 2026
Generate thorough unit tests that cover normal cases, edge cases and errors, using your testing framework of choice.

Prompt

Write unit tests for the function below.

Language: [language]
Testing framework: [e.g. Jest, pytest, PHPUnit, JUnit]

Cover:
- Typical inputs (happy path)
- Edge cases: empty, zero, null/None, very large values, unusual characters
- Invalid inputs and expected errors
- Any branches or conditions in the code

Rules:
- One behaviour per test, with a descriptive test name
- Use arrange / act / assert structure
- Mock external calls (network, database, time) if present
- Add a short comment above any test whose purpose isn't obvious

After the tests, list any behaviour that seems ambiguous and should be clarified.

Function:
```
[paste function]
```

Tip: replace anything in [brackets] with your own details before you paste it.

#unit tests#testing#tdd#quality
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