Ideas from John Beresniewicz:

Does utPLSQL allow for logging all assertion failures to a table? It might also be valuable to automatically generate test cases to test "extremes" for input parameters like: NULLs for all parms, negative numbers, fractional numbers, large numbers, zero, long strings, short strings, strings with unusual characters. The automatically generated tests would not know what expected output is, but would log any exceptions generated for analysis by programmer to see if there are input boundary conditions that cause unexpected blowups.