add coverage

.github/workflows/unit-test.yml

@@ -36,10 +36,18 @@ jobs:
           restore-keys: ${{ runner.os }}-composer-
 
       - name: Install Composer dependencies
-        run: composer install --no-progress --prefer-dist --optimize-autoloader
+        run: |
+          composer global require php-coveralls/php-coveralls
+          composer update --prefer-stable --prefer-dist --no-interaction
 
       # Add a test script to composer.json, for instance: "test": "vendor/bin/phpunit"
       # Docs: https://getcomposer.org/doc/articles/scripts.md
 
       - name: Run test suite
-        run: composer run-script test
+        run: vendor/bin/phpunit --no-configuration ./tests --coverage-clover build/reports/clover.xml
+
+      - name: Upload coverage results to Coveralls
+        env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          php-coveralls --coverage_clover=build/reports/clover.xml --json_path=build/reports/coveralls-upload.json -v