ydb/yql/essentials/tests/s-expressions/suites/Casts/AlterToOverList.yqls

(

(library "alterto.yql")
(import alterto_module '"alterto.yql")

(let config (DataSource 'config))

# List<Int32> -> List<Uint16> (success)
(let targetType (ListType (DataType 'Uint16)))
(let emptyTarget (List targetType))
(let src (AsList (Int32 '1) (Int32 '2) (Int32 '3)))
(let world (Apply (bind alterto_module 'doAlterTo) world src targetType emptyTarget))

# List<Int32> -> List<Uint16> (fail)
(let targetType (ListType (DataType 'Uint16)))
(let emptyTarget (List targetType))
(let src (AsList (Int32 '1) (Int32 '"-2") (Int32 '3)))
(let world (Apply (bind alterto_module 'doAlterTo) world src targetType emptyTarget))

# List<Int32?> -> List<Uint16> (fail)
(let targetType (ListType (DataType 'Uint16)))
(let emptyTarget (List targetType))
(let src (AsList (Just (Int32 '1)) (Null) (Just (Int32 '3))))
(let world (Apply (bind alterto_module 'doAlterTo) world src targetType emptyTarget))

(return world)

)