public function testNull()
{
asrt(setget("NULL"), "NULL");
asrt(setget("NULL"), "NULL");
asrt(setget("0123"), "0123");
asrt(setget("0000123"), "0000123");
asrt(setget(NULL), NULL);
asrt(setget(0) == 0, TRUE);
asrt(setget(1) == 1, TRUE);
asrt(setget(TRUE) == TRUE, TRUE);
asrt(setget(FALSE) == FALSE, TRUE);
}