public function testShuffleString()
{
$crypt = new PasswordLib();
$string = 'abcdefghijklmnopqrstuvwxyz';
$newString = $crypt->shuffleString($string);
$this->assertNotEquals($string, $newString);
$cnt = count_chars($string, 1);
$cnt2 = count_chars($newString, 1);
$this->assertEquals($cnt, $cnt2);
}
