Unit Test Generator Prompt
Automatically generate thorough unit tests for any function — covering happy paths, edge cases, and failure modes — in the testing framework of your choice.
The prompt
Write comprehensive unit tests for the following function or module. Cover the happy path, edge cases, and error conditions. Use the testing library already in the project if apparent:
{{code}}Works in ChatGPT, Claude, Gemini and other assistants. Replace the highlighted placeholders with your own content.
How to use it
Paste the function or module at {{code}} and name your test framework (for example pytest, Jest or XCTest) so the generated tests match your project.
Tips for better results
- Ask for tests in the same style as an existing test file by pasting one as an example.
- Read every assertion. Generated tests can pass while checking the wrong thing.
- Follow up with “what cases are still untested?” to find gaps.
Save this prompt in Promta
Keep it in your library and paste it from the menu bar, a hotkey or your iPhone keyboard, without leaving the app you're in.
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