Add coverage

.github/workflows/cover.yml

@@ -0,0 +1,40 @@
+on:
+  push:
+    branches:
+      - dev
+
+name: CI
+
+jobs:
+  run:
+    name: Tests
+
+    strategy:
+      matrix:
+        operating-system: [ ubuntu-latest ]
+        php-versions: [ '8.1', '8.2' ]
+
+    runs-on: ${{ matrix.operating-system }}
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-versions }}
+          extensions: json
+
+      - name: Install dependencies with composer
+        run: composer install
+
+      - name: Run tests
+        run: XDEBUG_MODE=coverage ./vendor/bin/phpunit --coverage-clover clover.xml
+
+      - name: Upload coverage results to Coveralls
+        env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          composer global require php-coveralls/php-coveralls
+          php-coveralls --coverage_clover=build/logs/clover.xml -v