1) single digit 2) double alpha 3) double numeric 4) double symbol 5) triple digit 6) mixed case 7) white space as valid entry 8) negative integer 9) regex 10) mixed-digit (alph-numeric-symbol) 11) click submit button 12) press Enter 13) press tab while in field (to go to submit) 14) white space trimmed 15) 01 (does it drop the 0?) 16) validate entry in database ???