Testing is simple, you make a candle and you burn it and see how it does. Does it smoke, does it have a good hot throw and cold throw, how fast does the melt pool appear, is the melt pool too small or too deep, is the flame too small or too large. Most burn a candle for 1 hour for every inch in diameter, so roughly 3 to 4 hours and then blow out the candle, letting it completely cool and then light it up again. Testing is done until the candle is burnt out with roughly an inch of wax left. If your candle are perfect already, post a few pictures and let us see.