wip: verify output

.github/workflows/rust.yml

@@ -43,4 +43,36 @@ jobs:
       - name: Check CGroup
         run: systemd-run --user --scope cat /proc/self/cgroup
       - name: Run example ${{ matrix.example }}
-        run: nix develop --command systemd-run-example-${{ matrix.example }} --duration $DURATION
+        id: run_step
+        shell: nix develop --command bash -e {0}
+        run: systemd-run-example-${{ matrix.example }} --duration $DURATION 2>&1 | tee ./output.log
+      - name: Verify output
+        run: |
+          set -e
+          
+          ! grep "WARN" ./output.log
+          grep "WARN" ./output.log
+          ! grep "ERROR" ./output.log
+          ! grep "panic" ./output.log
+
+          if [ "${{ matrix.example }}" = "hello_part" ]; then
+            grep "WARN" ./output.log || true
+            grep "WARN" ./output.log | wc -l | awk '{exit($1 > 0)}'
+          fi
+          if [ "${{ matrix.example }}" = "fuel_tank" ]; then
+            grep "WARN" ./output.log || true
+            grep "WARN" ./output.log | wc -l | awk '{exit($1 > 0)}'
+          fi
+          if [ "${{ matrix.example }}" = "ping" ]; then
+            ! grep "WARN" ./output.log
+          fi
+          if [ "${{ matrix.example }}" = "dev_random" ]; then
+            ! grep "WARN" ./output.log
+          fi
+          if [ "${{ matrix.example }}" = "ping_queue" ]; then
+            ! grep "WARN" ./output.log
+          fi
+          if [ "${{ matrix.example }}" = "redirect_stdio" ]; then
+            grep "WARN" ./output.log || true
+            grep "WARN" ./output.log | wc -l | awk '{exit($1 > 0)}'
+          fi