wallet, rpc: deprecate settxfee and paytxfee

test/functional/rpc_deprecated.py

@@ -4,13 +4,21 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test deprecation of RPC calls."""
 from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import assert_raises_rpc_error
 
 class DeprecatedRpcTest(BitcoinTestFramework):
+    def add_options(self, parser):
+        self.add_wallet_options(parser)
+
     def set_test_params(self):
         self.num_nodes = 1
         self.setup_clean_chain = True
         self.extra_args = [[]]
 
+
+    def skip_test_if_missing_module(self):
+        self.skip_if_no_wallet()
+
     def run_test(self):
         # This test should be used to verify the errors of the currently
         # deprecated RPC methods (without the -deprecatedrpc flag) until
@@ -23,7 +31,8 @@ class DeprecatedRpcTest(BitcoinTestFramework):
         # at least one other functional test that still tests the RPCs
         # functionality using the respective -deprecatedrpc flag.
 
-        self.log.info("Currently no tests for deprecated RPC methods")
+        self.log.info("Test settxfee RPC")
+        assert_raises_rpc_error(-32, 'settxfee is deprecated and will be fully removed in v31.0.', self.nodes[0].rpc.settxfee, 0.01)
 
 if __name__ == '__main__':
     DeprecatedRpcTest(__file__).main()