How to use
- Copy the installation command and review the source package before installing it in your own agent environment.
- Check the source document for required tools, credentials and supported hosts.
- Describe your input and desired deliverable; review the output against the source material.
npx skills add https://github.com/aicodeking/deepseek-stack --skill ds-tddBefore you start
- Installation does not include a model subscription, API allowance or permission to access your files.
- Repository stars and installation counts describe activity, not an independent quality or security test.
Rendered from the source repository. Headings, examples, code, tables, links, and referenced images are preserved.
ds-tdd
Make the bug executable before touching production code, so the fix is proven, not claimed.
Steps
- Pin down the bug: expected behavior, actual behavior, the code path, and the smallest way to reproduce it.
- Find the nearest existing test style for that code path. Use it. Do not build a new harness just for this.
- Write the smallest test that would have caught the bug. It checks intended behavior, not the current implementation.
- Run it. Show the output. It must fail, and fail for the bug, not for a typo or missing import. If not, fix the test first.
- Make the smallest production change that gives the intended behavior without breaking nearby contracts.
- Run the new test and the surrounding suite. Show the output.
- If a clean test is impractical (heavy setup, brittle mocks, production-only state), use the closest runnable check instead: a script, a repro command or a log check. Say why you skipped the test.
Stop when
- The new test failed before the fix and passes after it, both shown with output, and the surrounding suite passes.
- Or after three fix attempts the test still fails. Stop, report what you learned and run /ds-unstick.
Rules
- Never edit a test to match a wrong implementation.
- Do not weaken existing assertions without a clear, stated reason.
- No test beats a bad test: one that mostly tests mocks, depends on timing, or would be deleted right after.

