T3: enable Stryker.NET mutation testing — add stryker-config.json#194
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Pull request overview
Adds a Stryker.NET configuration file intended to enable mutation testing for the Wolfgang.Etl.Abstractions project targeting net10.0.
Changes:
- Add root-level
stryker-config.jsonpointing Stryker at the main library project and the unit test project. - Configure reporters (html/json/progress) and set mutation score thresholds (with
break: 0to avoid failing CI initially).
This was referenced Jun 23, 2026
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Adds
stryker-config.jsonso Stryker.NET mutation testing actually runs against this repo once the canonical.github/workflows/stryker.yamllands.target-framework: net10.0(mutation runs one TFM at a time)thresholds.break: 0(keep CI green while baseline establishes)Pattern lifted from IComparable-Extensions PR #136 — 100% mutation score on the v1.1.1 test surface.
Ordering note
The earlier description claimed the canonical
stryker.yamlwas "already shipped via the T3 fanout" — that was true in IComparable-Extensions but not in this repo. PR #186 (the standalone T3 workflow PR) and PR #184 (the canonical-protected umbrella) were both closed unmerged. The workflow currently lives onvNextand will land onmainvia the in-flight Release PR (#192).This config is therefore a no-op on main until #192 merges, after which the weekly mutation run starts producing scores. No CI break in the meantime — the config sits as plain data until the workflow looks for it.
Initiative T3.