Merge #19936: Test: batch rpc with params

e1fdd29 Test batch rpc with params (Gregory Sanders)

Pull request description:

  Useful as an example and test case.

ACKs for top commit:
  laanwj:
    ACK e1fdd29
  theStack:
    ACK e1fdd29

Tree-SHA512: 2d2ba8960916342b264a14624857d6dd10005be12efafb3e970b82656f721c8f3700ebc9b8809de1b2f887d482b772043504aeaeebc7f2e1c8203f076a451526

Author: laanwj

test/functional/interface_rpc.py

@@ -45,7 +45,7 @@ def test_batch_request(self):
             # work fine.
             {"method": "invalidmethod", "id": 2},
             # Another call that should succeed.
-            {"method": "getbestblockhash", "id": 3},
+            {"method": "getblockhash", "id": 3, "params": [0]},
         ])
 
         result_by_id = {}