test: check replaceable mismatch error in createrawtransaction RPC

Author: theStack

test/functional/rpc_rawtransaction.py

@@ -17,6 +17,7 @@
 
 from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.messages import (
+    BIP125_SEQUENCE_NUMBER,
     CTransaction,
     tx_from_hex,
 )
@@ -220,6 +221,10 @@ def createrawtransaction_tests(self):
         assert_raises_rpc_error(-8, "Invalid parameter, key-value pair must contain exactly one key", self.nodes[0].createrawtransaction, [], [{'a': 1, 'b': 2}])
         assert_raises_rpc_error(-8, "Invalid parameter, key-value pair not an object as expected", self.nodes[0].createrawtransaction, [], [['key-value pair1'], ['2']])
 
+        # Test `createrawtransaction` mismatch between sequence number(s) and `replaceable` option
+        assert_raises_rpc_error(-8, "Invalid parameter combination: Sequence number(s) contradict replaceable option",
+                                self.nodes[0].createrawtransaction, [{'txid': TXID, 'vout': 0, 'sequence': BIP125_SEQUENCE_NUMBER+1}], {}, 0, True)
+
         # Test `createrawtransaction` invalid `locktime`
         assert_raises_rpc_error(-3, "Expected type number", self.nodes[0].createrawtransaction, [], {}, 'foo')
         assert_raises_rpc_error(-8, "Invalid parameter, locktime out of range", self.nodes[0].createrawtransaction, [], {}, -1)