feat: add e2e.yml

.github/workflows/e2e.yml

@@ -0,0 +1,60 @@
+name: E2E Test
+
+on:
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+    inputs:
+      target_repo:
+        description: 'Target repository to test against'
+        required: false
+        default: 'llvm/llvm-project'
+
+jobs:
+  e2e-test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        clang_version: [16, 17, 18, 19, 20]
+
+    name: Test clang ${{ matrix.clang_version }}
+    steps:
+      - name: Checkout workflow repo
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.13'
+
+      - name: Install Python dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install pre-commit
+
+      - name: Clone target repository
+        run: |
+          git clone --depth=1 https://github.com/${{ github.event.inputs.target_repo || 'llvm/llvm-project' }}.git test-repo
+
+      - name: Create .pre-commit-config.yaml
+        run: |
+          cd test-repo
+          rm -f .pre-commit-config.yaml
+          cat > .pre-commit-config.yaml << EOF
+          repos:
+            - repo: https://github.com/cpp-linter/cpp-linter-hooks
+              rev: main
+              hooks:
+                - id: clang-format
+                  args: [
+                    --style=LLVM,
+                    --version=${{ matrix.clang_version }}
+                  ]
+          EOF
+
+      - name: Install and run cpp-linter-hooks
+        run: |
+          cd test-repo
+          pre-commit install
+          pre-commit run --all-files