/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/ is in phpunit-selenium 1.2.6-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Command.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/CommandsHolder.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Driver.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Element/
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Element.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Element/Select.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/ElementCommand/
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/ElementCommand/Attribute.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/ElementCommand/Click.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/ElementCommand/Css.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/ElementCommand/Equals.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/ElementCommand/GenericAccessor.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/ElementCommand/GenericPost.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/ElementCommand/Value.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/ElementCriteria.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Exception.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Response.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Session/
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Session.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Session/Cookie/
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Session/Cookie.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Session/Cookie/Builder.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Session/Storage.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Session/Timeouts.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/SessionCommand/
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/SessionCommand/AcceptAlert.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/SessionCommand/AlertText.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/SessionCommand/DismissAlert.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/SessionCommand/Frame.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/SessionCommand/GenericAccessor.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/SessionCommand/Url.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/SessionCommand/Window.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/SessionStrategy/
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/SessionStrategy.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/SessionStrategy/Isolated.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/SessionStrategy/Shared.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/StateCommand.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/URL.php
/usr/share/php/PHPUnit/Extensions/Selenium2TestCase/Window.php