add workflow

.github/dependabot.yml

@@ -0,0 +1,17 @@
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+
+  # Maintain dependencies for Composer
+  - package-ecosystem: "composer"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/test.yml

@@ -0,0 +1,84 @@
+name: 'Run tests'
+
+on:
+  pull_request:
+    paths:
+      - '**/*.php'
+      - '.github/workflows/*'
+  push:
+    paths:
+      - '**/*.php'
+      - '.github/workflows/*'
+
+jobs:
+  cs:
+    name: 'Check coding style'
+    runs-on: 'ubuntu-22.04'
+
+    steps:
+      - name: 'Checkout current revision'
+        uses: 'actions/checkout@v3'
+
+      - name: 'Setup PHP'
+        uses: 'shivammathur/setup-php@v2'
+        with:
+          php-version: '8.1'
+          tools: 'composer'
+          extensions: 'mbstring, intl'
+          coverage: 'none'
+
+      - name: 'Discover Composer cache directory'
+        id: 'cachedir'
+        run: 'echo "::set-output name=path::$(composer global config cache-dir)"'
+
+      - name: 'Share Composer cache across runs'
+        uses: 'actions/cache@v3'
+        with:
+          path: '${{ steps.cachedir.outputs.path }}'
+          key: "composer-${{ github.job }}-${{ hashFiles('**/composer.json') }}"
+          restore-keys: |
+            composer-${{ github.job }}-
+            composer-
+
+      - name: 'Install dependencies with Composer'
+        run: 'composer install --prefer-dist --no-interaction'
+
+      - name: 'Run PHP CodeSniffer'
+        run: 'composer run-script cs-check -- -n'
+
+  stan:
+    name: 'Static code analyzer'
+    runs-on: 'ubuntu-22.04'
+    continue-on-error: true
+
+    steps:
+      - name: 'Checkout current revision'
+        uses: 'actions/checkout@v3'
+
+      - name: 'Setup PHP'
+        uses: 'shivammathur/setup-php@v2'
+        with:
+          php-version: '8.1'
+          tools: 'composer, phpstan'
+          extensions: 'mbstring, intl'
+          coverage: 'none'
+
+      - name: 'Discover Composer cache directory'
+        id: 'cachedir'
+        run: 'echo "::set-output name=path::$(composer global config cache-dir)"'
+
+      - name: 'Share Composer cache across runs'
+        uses: 'actions/cache@v3'
+        with:
+          path: '${{ steps.cachedir.outputs.path }}'
+          key: "composer-${{ github.job }}-${{ hashFiles('**/composer.json') }}"
+          restore-keys: |
+            composer-${{ github.job }}-
+            composer-
+
+      - name: 'Install dependencies with Composer'
+        run: 'composer install --prefer-dist --no-interaction'
+
+      - name: 'Run PHP STAN'
+        run: |
+          phpstan analyse --no-progress src