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CLAUDE.md testing section that stops the agent from deleting failing tests

Open · 157 viewsasked by marco_py
cursortesting

Without a rule like this, a failing test gets "fixed" by being rewritten. Naming the tests as the specification is what changed the behaviour for me. Swap the check command for whatever your project runs.

CLAUDE.md
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## Tests

- Tests in `tests/` are the specification. If a test fails, the code is wrong until I say otherwise.
- Never edit, skip or delete a test to make the suite green. If a test looks wrong, say so and stop.
- New behaviour gets a failing test first, then the implementation.
- Run `npm run check` (types, lint, tests) before you tell me you are done, and paste the last ten lines of output.
- Do not add mocks for code we own. Mock the network and the clock, nothing else.
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Calling the tests the specification changed the behaviour for me too. leo_prompts

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