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Amaury Levé f2eb897a12 Fix dotnet-test findings from the refreshed cross-family eval (#899) (#945)
* Fix dotnet-test findings from the refreshed cross-family eval (#899)

Every change below is driven by judge evidence from the losing trials of the
refreshed 5-family dotnet-test matrix (runs 30108473397 + recovery runs), not by
style preference.

Eval measurement fix — the "discovery" P2s were an artifact:
- assertion-quality, test-gap-analysis, test-smell-detection, and test-tagging
  each have a decline stimulus with `constraints.reject_skills: ["*"]`, so the
  skill cannot activate there by construction. Without `expect_activation:
  false` the adapter counted those dormant runs as missed activations, which is
  exactly the 75-88% invocation rates reported in the scorecard. Annotating them
  (the convention already used by agent.test-quality-auditor) removes the false
  signal; the non-activations were the only ones observed for these skills.

Skill fixes:
- test-gap-analysis: baselines won by actually running the suite while the skill
  reasoned statically and reported survivors that the tests in fact kill. Added
  Step 4b: confirm every reported survivor by applying it, re-running the
  covering tests, and reverting; fall back to reasoning only when the suite
  cannot run, labelled unverified. Calibrated severity down for strong suites.
- test-anti-patterns: baselines won on depth, not polish. Added a depth bar —
  account for every test in scope, give exact expected values in fixes, name the
  adjacent error-path/boundary gaps, and keep counts consistent. Trimmed three
  pitfall rows that duplicated the calibration step so the skill stays under the
  profiler's "comprehensive" threshold.
- detect-static-dependencies: losses were all counting accuracy. One
  authoritative total (no findings parked outside it), classify by the resource
  touched rather than by the `static` keyword, exclude pure helpers such as
  Path.Combine from the needs-wrapping total, require file:line, and add the
  missing randomness/culture/serialization categories.
- test-smell-detection: the calibration rule told models to downgrade Sleepy
  Test for integration tests, which is what lost both losing scenarios. Fixed
  sleeps now stay High in any category; Mystery Guest and Eager Test still
  downgrade.
- crap-score: losses came from estimating coverage after collection failed.
  Added the dotnet-coverage/ReportGenerator recovery path and a hard rule never
  to publish a CRAP score built on assumed coverage.
- coverage-analysis: answer the asked question first, reconcile every number
  against the script output, and list every below-threshold member instead of
  declaring one method the entire gap.
- migrate-static-to-wrapper: migrate exactly what was requested (no adjacent
  DateTime.Now rewrites, respect intentional-use comments) and never report
  "build succeeded" when the build or restore failed.
- code-testing-agent: quote each requirement verbatim in the evidence table so
  multi-condition requirements map to a test that covers the whole combination,
  and cite a clean run rather than a coverage attempt that exited non-zero.

Validation: skill-validator check passes (20 skills, 10 agents); markdownlint
clean; eval specs parse and the adapter now reports all four decline stimuli as
expect-dormant.

Refs #899

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 1947263a-0ef9-47bd-ac53-5af5afa3ddaa

* Strengthen underpowered dotnet-test evals from the PR 945 eval run

The PR eval reported 5 of 10 skills as "no credible improvement". Reproducing
the gate arithmetic from the artifacts shows the dominant cause is statistical
power, not skill quality.

The gate is `mean > 0 AND ci_low > 0` with a t-based CI over per-trial scores,
which reduces to `sqrt(n) * (mean/sd) > t(n-1)`. The required mean/sd ratio is
brutal at small n:

  n=2 -> 8.98    n=3 -> 2.48    n=4 -> 1.59
  n=5 -> 1.24    n=6 -> 1.05    n=8 -> 0.84

Recomputing each reported CI from the per-trial scores reproduces the published
numbers exactly, which confirms the mechanism:

  crap-score                [0.4,1.0,0.4]        n=3 CI [-0.261, 1.461]
  migrate-static-to-wrapper [1.0,0.4,0.4]        n=3 CI [-0.261, 1.461]
  test-gap-analysis         [0.4,0,0.4,0.4]      n=4 CI [-0.018, 0.618]
  test-anti-patterns        [0.4,0,0.4,0,0,0.4]  n=6 CI [-0.030, 0.430]
  code-testing-agent        [0,0.4]              n=2 CI [-2.341, 2.741]

crap-score and migrate-static-to-wrapper won 100% of their trials (3W/0T/0L)
and still failed: at n=3 nothing short of three identically-sized wins can
clear the gate. That is a property of a thin eval, not of the skill.

Scenario counts are raised with discriminating cases, four of them by wiring up
fixtures that were already committed but had no stimulus referencing them:

- test-gap-analysis 4 -> 6, using the orphaned `report-quality` fixture (trivial
  auto-properties and an auto-generated .g.cs to skip, private helpers reachable
  only through the public API, and a deliberately weak Assert.IsTrue that cannot
  kill arithmetic mutations) and the orphaned `rust-error-propagation` fixture
  (an untested `?` propagation path and an untested `<=` boundary).
- test-anti-patterns 6 -> 8, using the orphaned `pytest-mixed` fixture (which
  also checks the calibration rule that pytest's bare `assert` must not be
  flagged) and the orphaned `assertion-problems` fixture (which separates
  Critical false-confidence assertions from a Low-severity message nit).
- crap-score 3 -> 6, with a new `refactor-required` fixture whose numbers are
  self-consistent: ApplySurcharges has complexity 13 behind a stale
  "Complexity: 4" comment (CRAP 28.4, needs 77.2% coverage), ClassifyAccount has
  complexity 17 so coverage alone can never reach CRAP < 15, and RoundToCurrency
  is 100% covered so its CRAP equals its complexity exactly.
- migrate-static-to-wrapper 3 -> 5, adding a DateTimeKind-preservation scenario
  over the existing fixture and a new `static-helper` fixture where a static
  class must gain an ambient TimeProvider seam without breaking its callers.
- code-testing-agent 2 -> 3, with a compact C# fixture that must extend an
  existing suite to the untested method only. This eval stays the weakest: each
  scenario is expensive, so raising `runs` is a better lever than adding more
  heavyweight scenarios.

Verification:
- every eval spec parses and all 254 fixture references resolve
- the three new fixtures compile; the shipping-quotes fixture restores, builds
  and its three seed tests pass under `dotnet test` in a clean workspace
- skill-validator check passes (20 skills, 10 agents)
- markdownlint clean

Refs #899

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 1947263a-0ef9-47bd-ac53-5af5afa3ddaa

* Address review feedback on fixture and counting wording

- BillableWeightTests: the ZeroOrNegative test only asserted the zero case, so
  its name overstated what it covered. Made it data-driven over 0 and -1 so the
  name matches the assertions. This matters more than usual here: the file is
  the seed suite for a test-quality eval, and a misleading test name is exactly
  what these skills are supposed to flag.

- detect-static-dependencies: the Step 3 lead-in said to count each "static call
  pattern", which contradicted the rule immediately below it that instance
  members reaching the same untestable resource must also be counted. Reworded
  to "call site" and made the instance-member inclusion explicit.

Verified: the fixture restores, builds and now passes 4 tests (was 3);
skill-validator check passes; markdownlint clean.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 1947263a-0ef9-47bd-ac53-5af5afa3ddaa

---------

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 1947263a-0ef9-47bd-ac53-5af5afa3ddaa
2026-07-29 16:28:04 +02:00
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