Extension:Offline/Tests

Some test coverage exists already, it's run by the Special:Offline page.


 * Bz2 dumpfiles can be opened and decompressed (a terrifically inefficient thing to do)
 * Can search the index from article title to file and offset
 * Found an article at the expected file and offset
 * The mediawiki Article getContent is returning data from our xml store.

Tests are needed on,


 * bz2 file boundary failures
 * template recursion
 * slave/master behavior