how are you testing your own tubes?

I've had very good luck with reputable dealers like thetubestore.com, Upscale, and Tube Depot, who seemingly test things before shipping, and Ebay sellers with lots of positive feedback and a return policy for NOS tubes. Only one tube has committed "tubiscide" and that was something I observed when a NOS Phillips military spec 12AT7 flamed out...tubestore warranty to the rescue...

Buy them from Vintage Tube Services or Brent Jesse and you will not have to test them as it will be done already.Good luck!!

Ask some old timers in your neighborhood. I got a hickok 600a from my neighbor, in perfect shape, for 50$. He was so happy I was into tubes. He also gave me a huge box of tubes. Also, check on eBay. There’s plent o tube testers for sale. Good luck!

I think knowing what you are testing helps determine correlative measurements that could determine performances.  Tubes tested from various houses are provided with multiple measurement data.  With that in mind, use the right measurements per application.  Tube testers - If you are testing tubes and want reliability with your readings than modern equipment is available.  I use MaxiMatcher II.  http://maximatcher.com/maximatcher.htmlFinding a good or better tube tester of the antique version is sometimes difficult.  I learned from multiple purchases.  My choice unit is a B & K Dyna-Jet in almost pristine condition.  
Good Luck.