python-testing is agent-read markdown (skill) from fmind/dot: Write Python tests with pytest, fixtures, property tests, and test-driven development..
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What the file says
# Python Testing
Prove a change with an honest red-green-refactor cycle: a failing test that detects the missing or broken behavior, then the smallest trustworthy change; [quality-assurance](../quality-assurance/SKILL.md) owns the broader campaign and [systematic-debugging](../systematic-debugging/SKILL.md) owns failures not yet understood.
For pytest fixture, collection, or assertion maintenance, use [pytest mechanics](references/pytest.md) directly. Use the red-green-refactor workflow below when implementing a behavior change; test-only maintenance does not require inventing a production change.
## Workflow
1. **Discover the harness**: Read repository instructions, existing tests, task definitions, and nearby patterns; find the smallest command that exercises the target behavior.
1. **State the contract**: Name the production change that would make the test pass and a plausible regression that would make it fail.
1. **RED**: Write one minimal test for one observable behavior; run it and confirm it fails for the missing behavior, not for a syntax, fixture, environment, or setup error.
…
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A 17 of 17 checks passed. Deterministic, no model, same answer every run.
pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (4722 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag
Source
GitHub
fmind/dot · 9 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jztlefyj3otlaa6d
GET https://markdownregistry.com/api/v1/resolve?ref=fmind/dot/python-testing
GET https://markdownregistry.com/api/v1/blob/c01950a0d22019a66d68cc37937830ba1cb55156d0b3322980bd85dbd54aa4fa
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dmitriyyukhanov/claude-plugins · plugins/python-dev/skills/python-testing/SKILL.md · Python testing patterns with pytest including unit tests, integration tests, fixtures, mocking, and coverage. Use when…
