TitleIndex: add more tests, for the ''group'' and ''hierarchy'' formats.
TitleIndex: add more tests, for the ''group'' and ''hierarchy'' formats.

The test case for the ''hierarchy'' format actually highlights a bug...


git-svn-id: f68c6b3b1dcd5d00a2560c384475aaef3bc99487@8978 af82e41b-90c4-0310-8c96-b1721e28e2e2

dafrito/trac-mirror,exocad/exotrac,exocad/exotrac,exocad/exotrac,dokipen/trac,dafrito/trac-mirror,dokipen/trac,moreati/trac-gitsvn,dafrito/trac-mirror,moreati/trac-gitsvn,moreati/trac-gitsvn,dafrito/trac-mirror,dokipen/trac,moreati/trac-gitsvn,exocad/exotrac