[rpc] [tests] Add deprecated RPC test

test/functional/deprecated_rpc.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+# Copyright (c) 2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# 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_jsonrpc
+
+class DeprecatedRpcTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.num_nodes = 2
+        self.setup_clean_chain = True
+        self.extra_args = [[], ["-deprecatedrpc=estimatefee"]]
+
+    def run_test(self):
+        self.log.info("estimatefee: Shows deprecated message")
+        assert_raises_jsonrpc(-32, 'estimatefee is deprecated', self.nodes[0].estimatefee, 1)
+
+        self.log.info("Using -deprecatedrpc=estimatefee bypasses the error")
+        self.nodes[1].estimatefee(1)
+
+if __name__ == '__main__':
+    DeprecatedRpcTest().main()

test/functional/test_runner.py

@@ -98,6 +98,7 @@ BASE_SCRIPTS= [
     'disconnect_ban.py',
     'decodescript.py',
     'blockchain.py',
+    'deprecated_rpc.py',
     'disablewallet.py',
     'net.py',
     'keypool.py',