[samtrion]

Problem

stryker-config.json has thresholds: high 80, low 60, break 0. Run 40488203974 (workflow_dispatch) ended with The final mutation score is 74.73 % and conclusion success, although the initial test run warned about failing tests (up to 30 in some warnings). With break 0 the workflow can never fail on score, so a regression is only visible on the dashboard.

Root cause

The break threshold was never set.

Change

thresholds.break: 0 -> 60 (equal to low; Stryker requires break <= low). The floor is about 15 points below the current 74.73% baseline because that baseline is depressed and noisy (failing initial tests).

Before / After

metric	before	after
thresholds.break	0	60
final score	74.73%	74.73% (unchanged, as expected)
workflow conclusion	success	success (break 60 not tripped): https://github.com/dailydevops/projectbuilders/actions/runs/40810530018
red path (throwaway branch, low=break=75)	n/a	failure, log Final mutation score is below threshold break. Crashing..., Stryker step failed, upload step skipped: https://github.com/dailydevops/projectbuilders/actions/runs/40815422940

Risk / what this does not change

• A run with no score (0 mutants, coverage capture failure) does not trip break (NaN); it is not covered by this change.
• When break trips, Stryker exits non-zero. In the shared pipeline the "Upload Stryker HTML reports" step has no if: always(), so the HTML artifact is skipped on such a run. The dashboard reporter runs inside Stryker and is unaffected.
• Other repositories have the same setting and are handled separately.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.69%. Comparing base (3375b9a) to head (baf403f).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #261   +/-   ##
=======================================
  Coverage   89.69%   89.69%           
=======================================
  Files          31       31           
  Lines         728      728           
  Branches       85       85           
=======================================
  Hits          653      653           
  Misses         67       67           
  Partials        8        8           

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