public function testPathHandling()
{
// default is only stripping the opening slash
$this->assertEquals(ltrim(__FILE__, '/'), $this->fixture->getRelativeFilename(__FILE__));
// after setting the current directory as root folder; should strip all but filename
$this->fixture->setPath(dirname(__FILE__));
$this->assertEquals(basename(__FILE__), $this->fixture->getRelativeFilename(__FILE__));
// when providing a file in a lower directory it cannot parse and thus it is invalid
$this->setExpectedException('InvalidArgumentException');
$this->fixture->getRelativeFilename(realpath(dirname(__FILE__) . '/../phpunit.xml'));
}