ci: render mutation scores in the run summary (refs #136)

.gitea/workflows/ci.yaml

@@ -99,6 +99,29 @@ jobs:
           restore-keys: |
             nuget-${{ runner.os }}-
       - run: make mutation
+      # Job summary (#136): render each service's Stryker Markdown report on the run page (Gitea
+      # 1.27 $GITHUB_STEP_SUMMARY). `if: always()` so a ratchet break still reports — and because
+      # `make mutation` stops at the first break, the summary also shows exactly where it stopped.
+      # Guarded so it no-ops on a runner/server without summary support. Strips the report's UTF-8 BOM.
+      - name: Mutation score summary
+        if: always()
+        run: |
+          [ -n "${GITHUB_STEP_SUMMARY:-}" ] || exit 0
+          {
+            echo "## 🧬 Mutation testing"
+            echo
+            for svc in acl event-subscriber domain bff; do
+              echo "### $svc"
+              echo
+              report=$(ls services/"$svc"/StrykerOutput/*/reports/mutation-report.md 2>/dev/null | sort | tail -1)
+              if [ -n "$report" ]; then
+                sed '1s/^\xef\xbb\xbf//' "$report"
+              else
+                echo "_No report — \`make mutation\` stopped before \`$svc\` (earlier ratchet break)._"
+              fi
+              echo
+            done
+          } >> "$GITHUB_STEP_SUMMARY"
       # Publish the Stryker HTML reports. `if: always()` uploads them even when the
       # ratchet fails — that is exactly when you want to inspect the survivors.
       # `continue-on-error` keeps the upload best-effort: the mutation *gate* is the

services/acl/stryker-config.json

@@ -2,7 +2,7 @@
   "stryker-config": {
     "solution": "Acl.slnx",
     "test-projects": ["Acl.Tests/Acl.Tests.csproj"],
-    "reporters": ["progress", "html"],
+    "reporters": ["progress", "html", "markdown"],
     "thresholds": {
       "high": 95,
       "low": 90,

services/bff/stryker-config.json

@@ -2,7 +2,7 @@
   "stryker-config": {
     "solution": "Bff.slnx",
     "test-projects": ["Bff.Tests/Bff.Tests.csproj"],
-    "reporters": ["progress", "html"],
+    "reporters": ["progress", "html", "markdown"],
     "mutate": [
       "!**/Program.cs",
       "!**/DownstreamClients.cs"

services/domain/stryker-config.json

@@ -2,7 +2,7 @@
   "stryker-config": {
     "solution": "Big.slnx",
     "test-projects": ["Big.Tests/Big.Tests.csproj"],
-    "reporters": ["progress", "html"],
+    "reporters": ["progress", "html", "markdown"],
     "mutate": [
       "!**/OpenZaakJobPump.cs",
       "!**/BeoordelingEscalatiePump.cs",

services/event-subscriber/stryker-config.json

@@ -2,7 +2,7 @@
   "stryker-config": {
     "solution": "EventSubscriber.slnx",
     "test-projects": ["EventSubscriber.Tests/EventSubscriber.Tests.csproj"],
-    "reporters": ["progress", "html"],
+    "reporters": ["progress", "html", "markdown"],
     "thresholds": {
       "high": 95,
       "low": 90,