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Title: docs(skills): add cross-axis test combination guidance to usethis-python-test skill by Copilot · Pull Request #1891 · usethis-python/usethis-python · GitHub

Open Graph Title: docs(skills): add cross-axis test combination guidance to usethis-python-test skill by Copilot · Pull Request #1891 · usethis-python/usethis-python

X Title: docs(skills): add cross-axis test combination guidance to usethis-python-test skill by Copilot · Pull Request #1891 · usethis-python/usethis-python

Description: When testing features with multiple independent axes of variation (e.g. path depth × value nesting), varying one axis at a time is necessary but not sufficient — the interaction between axes is a distinct code path that single-axis tests cannot exercise. Changes usethis-python-test skill (v1.2 → v1.3): Adds a new section "Testing combinations of independent axes of variation" covering: Why single-axis tests leave interaction gaps A 3-step procedure: identify axes → write single-axis tests → add at least one cross-axis test A concrete example (key-path depth × dict value nesting) to anchor the principle

Open Graph Description: When testing features with multiple independent axes of variation (e.g. path depth × value nesting), varying one axis at a time is necessary but not sufficient — the interaction between axes is a d...

X Description: When testing features with multiple independent axes of variation (e.g. path depth × value nesting), varying one axis at a time is necessary but not sufficient — the interaction between axes is a d...

Opengraph URL: https://github.com/usethis-python/usethis-python/pull/1891

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