codecov?

.github/workflows/ci.yaml

@@ -43,7 +43,11 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: '8.0'
+          coverage: pcov
       - name: Composer
         run: composer install
       - name: PHPUnit Tests
-        run: php ./vendor/bin/phpunit tests
+        run: php ./vendor/bin/phpunit tests  -c tests/phpunit.xml --coverage-clover=coverage.xml
+      - uses: codecov/codecov-action@v1
+        with:
+          files: ./coverage.xml

tests/phpunit.xml

@@ -3,4 +3,10 @@
 	<testsuite name='Stream'>
 		<directory suffix='.php'>./</directory>
 	</testsuite>
+
+	<coverage>
+		<include>
+			<directory suffix=".php">../src</directory>
+		</include>
+	</coverage>
 </phpunit>