/usr/share/php/tests/mnemo/ is in php-horde-mnemo 4.1.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/tests/mnemo/Mnemo/
/usr/share/php/tests/mnemo/Mnemo/AllTests.php
/usr/share/php/tests/mnemo/Mnemo/Autoload.php
/usr/share/php/tests/mnemo/Mnemo/TestCase.php
/usr/share/php/tests/mnemo/Mnemo/Unit/
/usr/share/php/tests/mnemo/Mnemo/Unit/Driver/
/usr/share/php/tests/mnemo/Mnemo/Unit/Driver/KolabTest.php
/usr/share/php/tests/mnemo/Mnemo/Unit/Factory/
/usr/share/php/tests/mnemo/Mnemo/Unit/Factory/DriverTest.php
/usr/share/php/tests/mnemo/Mnemo/Unit/Mnemo/
/usr/share/php/tests/mnemo/Mnemo/Unit/Mnemo/Base.php
/usr/share/php/tests/mnemo/Mnemo/Unit/Mnemo/KolabTest.php
/usr/share/php/tests/mnemo/Mnemo/Unit/Mnemo/Sql/
/usr/share/php/tests/mnemo/Mnemo/Unit/Mnemo/Sql/Base.php
/usr/share/php/tests/mnemo/Mnemo/Unit/Mnemo/Sql/Pdo/
/usr/share/php/tests/mnemo/Mnemo/Unit/Mnemo/Sql/Pdo/SqliteTest.php
/usr/share/php/tests/mnemo/Mnemo/bootstrap.php
/usr/share/php/tests/mnemo/Mnemo/phpunit.xml