And who or what is going to test the " 'TOWS Untested' warning system"?
ECAM - takeoff memo has a line: T.O CONFIG.......TEST (with 'test' in cyan) which turns into green T.O CONFIG NORMAL when test is pressed. My takeoff checklist has three items: 1. checking that entire take off memo has turned green 2. checking actual config on E/WD 3. checking the state of AC packs, and it's done by both pilots.
OTOH, ATR has a similar TOWS to MD80 and I had to test it with flaps retracted, before each and every flight per company policy.