Broad statistical tests are good enough for most all non-crypto RNGs - once you pass DieHarder you're probably good enough for practially all common RNG uses.
Breaking crypto RNGs is a subtle enough art that having a standardized set of tests wouldn't actually prove anything useful - it would be like saying "We tried every key in our collection on this new padlock and none of them worked, therefore the padlock is secure."
-Austin, author of SMHasher
