|Those cheap blinking light testers are useless and nobody who's ever done any testing of cables would rely on them. They'll tell you your cable is ok when it isn't.|
An ohm meter is not the proper tool either.
However, a good cable tester is going to cost a fair bit of money and since you're only running a few cables the logical thing to do is to call some electrical and/or network cabling companies and ask them how much they'd charge to test and certify how ever many cables you've run.
A little shopping around should get you a reasonable price and you cables will be tested with a tester that can be relied upon. Most importanly, you won't have to shell out hundreds (if not thousands) of dollars and a tester you'll only use the one time.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.