chore: check test files are up to date

Signed-off-by: Charles-Edouard Brétéché <charles.edouard@nirmata.com>

.github/workflows/ci.yml

@@ -89,4 +89,34 @@ jobs:
 
       - name: Test Policy
         run: go run ./cmd/cli/kubectl-kyverno test ../policies
-        working-directory: kyverno
+        working-directory: kyverno
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
+        with:
+          path: policies
+      - name: Clone Kyverno
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
+        with:
+          repository: kyverno/kyverno
+          path: kyverno
+          # The target branch of a pull request or the branch/tag of a push
+          ref: ${{ github.base_ref || github.ref_name }}
+      - name: Set up Go 
+        uses: actions/setup-go@93397bea11091df50f3d7e59dc26a7711a8bcfbe # v4.1.0
+        with:
+          go-version: "1.20"
+      - name: Lint policies
+        run: |
+          set -e
+          KYVERNO_EXPERIMENTAL=true go run ./cmd/cli/kubectl-kyverno fix test ./policies --save
+        working-directory: kyverno
+      - name: Check diff
+        run: |
+          set -e
+          git --no-pager diff test/cli
+          git diff --quiet --exit-code test/cli
+        working-directory: policies