If you failed, it will tell you right away. If you passed, it will tell you that they'll email you your results in a few days. If you didn't get either message, then your test did not submit properly and you will need to take the test again.
Usually, if you take too long to complete the test, it will not submit properly, though it appears to be a random glitch. It happened to me the first time I took it, too. I had to take it twice.
Hope this helps!
WoW TCG Judge LV2
Player Managment 2
WoW TCG RK2
Disclaimer: All answers provided assume that you have enough resources to exhaust, and are able to pay any other additional costs, in order to play the referenced allies/powers/abilities.