laravel - Php unit cover files of composer package

one text

i run tests in my laravel project but the test files are inside a composer package, here is my section of phpunit.xml

<testsuite name="Package Unit">
<directory suffix="Test.php">./vendor/mypackage/package/tests/Unit</directory>
</testsuite>

The tests works fine, but i'm not able to have them covered, i added the code below on phpunit.xml

 <coverage processUncoveredFiles="true">
        <include>
            <directory suffix=".php">./vendor/mypackage/package/src</directory>
            <directory suffix=".php">./app</directory>
        </include>
    </coverage>

But the coverage report contains only the filess inside the "app" dir, how can i solve this?