First batch of extended tuple tests

The DDL statement generated at line 315 is:

    CREATE TABLE mytable (k int PRIMARY KEY, v_0 tuple<list<ascii>>,v_1 tuple<list<bigint>>,

But here i == 1 and we try to insert a `tuple<list<ascii>>`.

This assertion works if I set i to 0 at line 320, but then it fails a bit later.