chore: fixed test

.github/workflows/test.yml

@@ -136,8 +136,15 @@ jobs:
 
       - name: Run changed-files with a single commit history
         id: changed-files
+        continue-on-error: true
         uses: ./
       
+      - name: Exit with 1 if no error is raised
+        if: steps.changed-files.outcome != 'failure' && github.event.action == 'closed'
+        run: |
+          echo "Expected: (failure) got ${{ steps.changed-files.outcome }}"
+          exit 1
+
       - name: Show output
         run: |
           echo '${{ toJSON(steps.changed-files.outputs) }}'