/**
* @depends testExist
* @return void
*/
public function testChown()
{
$filePath = __DIR__ . '/example.txt';
$fileObject = new File($filePath);
$this->assertGreaterThanOrEqual(0, $userId = $fileObject->getOwner());
$this->assertGreaterThanOrEqual(0, strlen($user = $fileObject->getOwnerName()));
$this->assertTrue($fileObject->chown($userId));
$this->assertTrue($fileObject->chown($user));
$this->assertEquals($userId, $fileObject->getOwner());
$this->assertEquals($user, $fileObject->getOwnerName());
}