python-testing SKILL.md skillA
python-testing from bitwise-media-group/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add bitwise-media-group/skills/python-testing@git:20260701.89b4f1fPins git:20260701.89b4f1f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- bitwise-media-group/skills
- Path
plugins/python/skills/python-testing/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260701.89b4f1f, committed Jul 1, 2026
- Size
- 4,001 bytes
- Repository stars
- 3
- License
- MIT
Python test authoring and review with pytest. Use when writing, adding, generating, or reviewing Python tests or unit tests for a function, module, or class; running pytest or a single test (the -k flag and other invocation flags for a Makefile or CI); parametrizing test cases into the table-driven pattern; setting up pytest fixtures or using the built-in tmp_path, monkeypatch, or capsys; choosing between hand-written fakes and mock objects; asserting a function raises with pytest.raises; or…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Python testing conventions
`pytest` is the whole toolkit — plain `assert`, fixtures, parametrization, and Hypothesis for
property tests. No `unittest.TestCase` boilerplate, no assertion DSLs. Tests live in `tests/` and
run with `uv run pytest`.
## 1. Parametrize instead of repeating
One test, a row per case — the table-driven pattern. Adding a behavior is adding a row:
```python
import pytest
from myapp.kv import parse
@pytest.mark.parametrize(
("line", "want_key", "raises"),
[
("a=b", "a", False),
("ab", None, True), # missing separator
("=b", None, True), # empty key
("a=", "a", False), # empty value is fine
],
)
def test_parse(line: str, want_key: str | None, raises: bool) -> None:
if raises:
with pytest.raises(ValueError):
parse(line)
else:
assert parse(line)[0] == want_key
```
Name each test for the behavior it pins down; `assert` directly — pytest rewrites it into a rich
failure message.
## 2. Fixtures for setup, built-ins first
Shared setup is a `@pytest.fixture`; teardown goes after a `yield`. Reach for the built-in fixtures
…Read the whole file at its exact version.
How to install
mdr add bitwise-media-group/skills/python-testing@sha256:af4d73e1f10f76ccThe line at the top of this page pins the label git:20260701.89b4f1f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_iahg7z3tzcxshdwc)
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Versions
The registry has recorded 1 version of this file, committed on Jul 1, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4001 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
bitwise-media-group/skills · 3 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_iahg7z3tzcxshdwc GET https://markdownregistry.com/api/v1/resolve?ref=bitwise-media-group/skills/python-testing GET https://markdownregistry.com/api/v1/blob/af4d73e1f10f76cc10b9b2ec854bf718275eaaea40eb435b227c9d3ac51ff207
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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