Add testing reference to wb-dev

[ilyatikhonyuk]

What changed

• wb-dev: new references/testing.md — the how-to for tests in WB Python services that no skill covered:
  • layout: tests/ at the repo root with __init__.py (pybuild discovers the suite by package), conftest.py, one test_<module>.py per production module, tests/data/ with artefacts captured from real controllers and golden files next to inputs;
  • style: plain pytest functions, black-box through the public API (same principle as fw-unittests on the firmware side);
  • WB fixture patterns (each with its source repo): factory fixtures, fake sysroot in tmp_path, autouse module-state reset, patch at the process boundary, monkeypatch for sys.argv;
  • run levels: local pytest (+ coverage commands from codestyle/python.ru.md), pybuild during the .deb build (WBDEV_PYBUILD_TEST_ARGS), Jenkins flags (defaultRunCoverage, defaultCoverageMin — per-repo, don't lower);
  • what NOT to do: no live broker/network/hardware in unit tests, don't edit failing tests to pass, don't hand-invent fixture data, keep tests/test_version.py.
• wb-dev SKILL.md: new short Testing section pointing at the reference.
• Versions: wb-plc plugin → 1.13.0, wb-cli → 1.8.14 (lockstep).

Why

The skills covered firmware testing (fw-unittests, fw-integration-tests) and process requirements (a PR needs tests — wb-git), but not how to add tests to a Python service. wb-python-service-template ships no tests at all, so an agent bootstrapping a service had no pattern to follow. The reference distills the actual conventions from wb-cloud-agent, wb-nm-helper, wb-diag-collect and this repo's own suite.

Test plan

Doc-only. Every pattern in the reference is backed by a named production repo; the Jenkins flag examples are copied verbatim from live Jenkinsfiles (wb-cloud-agent, wb-nm-helper).

Risks

• None functional (markdown + version bumps).
• Open PRs Add i18n-naming reference to wb-serial skill #33 / Add mirrored-constants rule to wb-dev #34 / Cross-link wb-serial timeouts to the mirrored-constants rule #35 / Mirror the multi-line docstring rule in wb-dev codestyle summary #36 touch the same version files; numbers here assume they merge first — whichever lands later needs a trivial version-line rebase.

🤖 Generated with Claude Code

[aadegtyarev]

Не в ту репку.

[ilyatikhonyuk]

Wrong repo — this content belongs in the private marketplace. Migrated as-is (including the 'tests are added when needed' clarification) to wirenboard/wb-agent-tools#74 as the new wb-development:python-testing skill.