ci: fix test results not commenting on PRs (#2463)

Backport of #2462 to karaf-4.4.x.

The publish-unit-test-result-action in workflow_run mode needs the
original event payload file to identify the associated PR. The CI
workflow was not uploading it, and the test-results workflow was
referencing a non-existent property (github.event.workflow_run.event_path).

Upload the event file as a separate artifact in CI and download it in
the test-results workflow so the action can correctly post PR comments.

Author: jbonofre

.github/workflows/ci-test-results.yml

@@ -38,18 +38,25 @@ jobs:
     if: github.event.workflow_run.conclusion != 'skipped'
 
     steps:
-      - name: Download and Extract Artifacts
+      - name: Download Test Results
         uses: dawidd6/action-download-artifact@v19
         with:
           run_id: ${{ github.event.workflow_run.id }}
           name: test-results
           path: artifacts
 
+      - name: Download Event File
+        uses: dawidd6/action-download-artifact@v19
+        with:
+          run_id: ${{ github.event.workflow_run.id }}
+          name: event-file
+          path: event
+
       - name: Publish Test Results
         uses: EnricoMi/publish-unit-test-result-action@v2
         with:
           commit: ${{ github.event.workflow_run.head_sha }}
-          event_file: ${{ github.event.workflow_run.event_path }}
+          event_file: event/event.json
           event_name: ${{ github.event.workflow_run.event }}
           large_files: true
           report_individual_runs: true

.github/workflows/ci.yml

@@ -83,3 +83,9 @@ jobs:
         with:
           name: test-results
           path: '**/target/surefire-reports/*.xml'
+      - name: Upload Event File
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: event-file
+          path: ${{ github.event_path }}