These are leftovers from RCs test list; probably horribly out of date.

Test DISTINCT, OFFSET, LIMIT, ORDER BY
Test FILTER inside optional where filter var is bound outside the optional
Test/implement pre-bound variables
Do bNode var names work???
Issue: FILTER and Unions
Test: WHERE { ?a ?b ?c GRAPH <nonexisting> {} } fails match
Test: WHERE { GRAPH <nonexisting> { GRAPH ?any {...} } } fails match
Test: WHERE { GRAPH ?g { OPTIONAL { :non :exist :ing } } } selects all graph names
Test: WHERE { GRAPH ?g { {t1} UNION {t2} } } selects all graph names IF one of t1,t2 matches
Test: WHERE { GRAPH ?g {} } w/ multiple datasets in same DB (because of shared graph name table)
Test: Does UnsupportedQueryDetector actually work?