Web based test suite

[jonasob]

It would be incredibly useful to have a web page which can perform some basic sanity checks on images and URLs. When I don't get a match that I would expect, or get a wrong match, I usually follow roughly the same sequence of events, and this could probably be automated greatly:

Given two image URLs, one original, and one which you expect should match that original:

a) Calculate blockhash of both with JS and C blockhash, signal error if >4 bit difference between JS and C
b) Lookup original in DB by hash, signal error if it's not found (not possible to match something against an original which doesn't exist)
c) hamming distance between the original and copy, signal error if >10 bits (wouldn't match)
d) Lookup copy hash in DB, signal error if not found (at this point, it should be found if original is there and <10 bits distance)