Add rpc work exceeded functional test

test/functional/rpc_work_exceeded.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+# Copyright (c) 2014-2019 The Bitcoin Core developers
+# Copyright (c) 2019-2021 Xenios SEZC
+# https://www.veriblock.org
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+from test_framework.pop import mine_until_pop_active
+from test_framework.test_framework import BitcoinTestFramework
+
+class WorkExceededTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.num_nodes = 1
+        self.setup_clean_chain = True
+        self.extra_args = [["-txindex", "-rpcworkqueue=100"]]
+
+    def skip_test_if_missing_module(self):
+        self.skip_if_no_pypoptools()
+
+    def setup_network(self):
+        self.setup_nodes()
+
+        mine_until_pop_active(self.nodes[0])
+
+    def getblocktemplate(self):
+        arg = {
+            "capabilities": ["coinbasetxn", "workid", "coinbase/append"],
+            "rules": ["segwit"]
+        }
+        return self.nodes[0].getblocktemplate(arg)
+
+    def run_test(self):
+        # VBK block
+        self.nodes[0].apm.mineVbkBlocks(10000)
+
+        # spam with the getblock template rpc function
+        for i in range(100000):
+            res = self.getblocktemplate()
+            # print(i)
+        assert False
+
+
+
+if __name__ == '__main__':
+    WorkExceededTest().main()