implemented UDT datatype test for primitives
implemented nonprim datatype tests
syntax and typo fixes
removed special case for MAP and fixed Assertions
remove unnecessary import
quick bugfix
Test for ensuring extra-lengthy udts are handled correctly.
Additional unprepared simple test + non existing types test
implemented nested UDT test
bugfix and passing test
Merge branch 'kishkaru-udt_datatype_tests' into 2.1