This is a translation of Cassandra's CQL unit test source file
validation/entities/UFTypesTest.java into our cql-pytest framework.
There are 7 tests, which reproduce one known bug:
Refs #13746: UDF can only be used in SELECT, and abort when used in WHERE, or in INSERT/UPDATE/DELETE commands
And uncovered two previously unknown bugs:
Refs #13855: UDF with a non-frozen collection parameter cannot be called on a frozen value
Refs #13860: A non-frozen collection returned by a UDF cannot be used as a frozen one
Additionally, we encountered an issue that can be treated as either a bug or a hole in documentation:
Refs #13866: Argument and return types in UDFs can be frozen
Closes#13867
1e18731a69