Fix another test

tests/integration/test_backward_compatibility/test_functions.py

@@ -148,6 +148,11 @@ def test_string_functions(start_cluster):
         # 22.8 Backward Incompatible Change: Extended range of Date32
         "toDate32OrZero",
         "toDate32OrDefault",
+        # 23.9 changed the base64-handling library from Turbo base64 to aklomp-base64. They differ in the way they deal with base64 values
+        # that are not properly padded by '=', for example below test value v='foo'. (Depending on the specification/context, padding is
+        # mandatory or optional). The former lib produces a value based on implicit padding, the latter lib throws an error.
+        "FROM_BASE64",
+        "base64Decode",
     ]
     functions = filter(lambda x: x not in excludes, functions)
 

tests/queries/0_stateless/00732_base64_functions.reference

@@ -22,6 +22,7 @@ foobar
 1	1
 1	1
 fooba
+~<7E>
 Zm9v
 foo
 foo

tests/queries/0_stateless/00732_base64_functions.sql

@@ -17,6 +17,9 @@ SELECT tryBase64Decode('foo', 'excess argument'); -- { serverError NUMBER_OF_ARG
 SELECT base64Decode('Zm9vYmF=Zm9v'); -- { serverError INCORRECT_DATA }
 SELECT tryBase64Decode('Zm9vYmF=Zm9v');
 
+SELECT base64Decode('foo'); -- { serverError INCORRECT_DATA }
+SELECT tryBase64Decode('foo');
+
 select base64Encode(toFixedString('foo', 3));
 select base64Decode(toFixedString('Zm9v', 4));
 select tryBase64Decode(toFixedString('Zm9v', 4));