* Add exp-mock-usage-analysis skill and evaluation
New experimental skill that detects unused, redundant, or unnecessary
mocks in .NET test suites. Covers Moq, NSubstitute, FakeItEasy, and
manual test doubles.
- SKILL.md with 6-step workflow: gather code, classify mocks, detect
anti-patterns, incorporate runtime data, generate recommendations,
report findings
- eval.yaml with 10 scenarios: trivial type mocking, unused setups,
redundant configs, stable utility mocks, well-placed mocks (no false
positives), NSubstitute support, FakeItEasy support, setup sprawl,
and 2 non-activation boundary tests
- Fixture files for each scenario with production + test code
- CODEOWNERS entry for @dotnet/dotnet-testing
* Remove no-headroom scenarios, increase NSubstitute timeout
Remove 4 scenarios where baseline already scores 5.0/5 (model handles
these well without skill guidance):
- Detect mocking of DTOs, records, and enums
- Recognize well-placed mocks without inventing false positives
- Decline when asked about non-mock test anti-patterns
- Decline mock framework migration request
Increase NSubstitute scenario timeout from 120s to 180s to avoid
baseline timeouts impacting scoring.
Remaining 6 scenarios all show positive skill impact (3→5, 3→4, etc).
* Document areas the model handles well without the skill
Add a subsection under 'When Not to Use' listing mock-related tasks
where the base model already scores 5.0/5 without skill guidance:
- Mocking trivial types (DTOs, records, enums)
- Recognizing well-placed mocks (no false positives)
* Fix md
* Improve
New experimental skill that assesses test maintainability: duplication,
test size, data-driven patterns, display names, builder/helper extraction,
and shared setup.
Jan Krivanek