ci: introduce phpcs, phpmd (#428)

* ci: introduce phpcs, phpmd

* test: fix code sniffs

* test: fix mess detector

.github/workflows/ci.yml

@@ -109,6 +109,53 @@ jobs:
           php_version: ${{ matrix.php }}
           path: src/
 
+  phpmd:
+    runs-on: ubuntu-latest
+    needs: [ composer ]
+    strategy:
+      matrix:
+        php: [ 8.1, 8.2 ]
+
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: build-artifact
+          path: /tmp/github-actions
+
+      - name: Extract build archive
+        run: tar -xvf /tmp/github-actions/build.tar ./
+
+      - name: PHP Mess Detector
+        uses: php-actions/phpmd@v1
+        with:
+          php_version: ${{ matrix.php }}
+          path: src/
+          output: text
+          ruleset: phpmd.xml
+
+  phpcs:
+    runs-on: ubuntu-latest
+    needs: [ composer ]
+    strategy:
+      matrix:
+        php: [ 8.1, 8.2 ]
+
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: build-artifact
+          path: /tmp/github-actions
+
+      - name: Extract build archive
+        run: tar -xvf /tmp/github-actions/build.tar ./
+
+      - name: PHP Code Sniffer
+        uses: php-actions/phpcs@v1
+        with:
+          php_version: ${{ matrix.php }}
+          path: src/
+          standard: phpcs.xml
+
   remove_old_artifacts:
     runs-on: ubuntu-latest
 

composer.json

@@ -15,7 +15,9 @@
 
 	"require-dev": {
 		"phpstan/phpstan": "^1.9",
-		"phpunit/phpunit": "^10.0"
+		"phpunit/phpunit": "^10.0",
+		"phpmd/phpmd": "^2.13",
+		"squizlabs/php_codesniffer": "^3.7"
 	},
 
 	"license": "MIT",