public function testGetFormattedDate()
{
$permissions = array('print', 'modify', 'copy', 'annot-forms', 'fill-forms', 'extract', 'assemble', 'print-high');
$enc = new \Com\Tecnick\Pdf\Encrypt\Encrypt(false);
$result = $enc->getFormattedDate();
$this->assertEquals('(D:', substr($result, 0, 3));
$this->assertEquals('+00\'00\')', substr($result, -8));
$enc = new \Com\Tecnick\Pdf\Encrypt\Encrypt(true, md5('file_id'), 0, $permissions, 'alpha');
$result = $enc->getFormattedDate();
$this->assertNotEmpty($result);
}