test: add coverage for unknown address type for createwalletdescriptor

test/functional/wallet_address_types.py

@@ -369,6 +369,8 @@ class AddressTypeTest(BitcoinTestFramework):
         assert_raises_rpc_error(-5, "Unknown address type ''", self.nodes[3].getnewaddress, None, '')
         assert_raises_rpc_error(-5, "Unknown address type ''", self.nodes[3].getrawchangeaddress, '')
         assert_raises_rpc_error(-5, "Unknown address type 'bech23'", self.nodes[3].getrawchangeaddress, 'bech23')
+        if self.options.descriptors:
+            assert_raises_rpc_error(-5, "Unknown address type 'bech23'", self.nodes[3].createwalletdescriptor, "bech23")
 
         self.log.info("Nodes with changetype=p2sh-segwit never use a P2WPKH change output")
         self.test_change_output_type(4, [to_address_bech32_1], 'p2sh-segwit')