http://bat-test.com/
You can skip the intro if you want, it isn't real interesting.
It is a series of 5 tests that test different things.
The embed results uses
html only, so we can't use it here
My results:
Test 1: 100%
Test 2: 73%
Test 3: 50%
Test 4: 67%
Test 5: 50%
Overall: 68%