[tests] functional test for createmultisig RPC

test/functional/rpc_createmultisig.py

@@ -0,0 +1,98 @@
+#!/usr/bin/env python3
+# Copyright (c) 2015-2017 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 transaction signing using the signrawtransaction* RPCs."""
+
+from test_framework.test_framework import BitcoinTestFramework
+import decimal
+
+class RpcCreateMultiSigTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.setup_clean_chain = True
+        self.num_nodes = 3
+
+    def get_keys(self):
+        node0,node1,node2 = self.nodes
+        self.add = [node1.getnewaddress() for _ in range(self.nkeys)]
+        self.pub = [node1.getaddressinfo(a)["pubkey"] for a in self.add]
+        self.priv = [node1.dumpprivkey(a) for a in self.add]
+        self.final = node2.getnewaddress()
+
+    def run_test(self):
+        node0,node1,node2 = self.nodes
+
+        # 50 BTC each, rest will be 25 BTC each
+        node0.generate(149)
+        self.sync_all()
+
+        self.moved = 0
+        for self.nkeys in [3,5]:
+            for self.nsigs in [2,3]:
+                for self.output_type in ["bech32", "p2sh-segwit", "legacy"]:
+                    self.get_keys()
+                    self.do_multisig()
+
+        self.checkbalances()
+
+    def checkbalances(self):
+        node0,node1,node2 = self.nodes
+        node0.generate(100)
+        self.sync_all()
+
+        bal0 = node0.getbalance()
+        bal1 = node1.getbalance()
+        bal2 = node2.getbalance()
+
+        height = node0.getblockchaininfo()["blocks"]
+        assert 150 < height < 350
+        total = 149*50 + (height-149-100)*25
+        assert bal1 == 0
+        assert bal2 == self.moved
+        assert bal0+bal1+bal2 == total
+
+    def do_multisig(self):
+        node0,node1,node2 = self.nodes
+
+        msig = node2.createmultisig(self.nsigs, self.pub, self.output_type)
+        madd = msig["address"]
+        mredeem = msig["redeemScript"]
+        if self.output_type == 'bech32':
+            assert madd[0:4] == "bcrt"  # actually a bech32 address
+
+        # compare against addmultisigaddress
+        msigw = node1.addmultisigaddress(self.nsigs, self.pub, None, self.output_type)
+        maddw = msigw["address"]
+        mredeemw = msigw["redeemScript"]
+        # addmultisigiaddress and createmultisig work the same
+        assert maddw == madd
+        assert mredeemw == mredeem
+
+        txid = node0.sendtoaddress(madd, 40)
+
+        tx = node0.getrawtransaction(txid, True)
+        vout = [v["n"] for v in tx["vout"] if madd in v["scriptPubKey"].get("addresses",[])]
+        assert len(vout) == 1
+        vout = vout[0]
+        scriptPubKey = tx["vout"][vout]["scriptPubKey"]["hex"]
+        value = tx["vout"][vout]["value"]
+        prevtxs = [{"txid": txid, "vout": vout, "scriptPubKey": scriptPubKey, "redeemScript": mredeem, "amount": value}]
+
+        node0.generate(1)
+
+        outval = value - decimal.Decimal("0.00001000")
+        rawtx = node2.createrawtransaction([{"txid": txid, "vout": vout}], [{self.final: outval}])
+
+        rawtx2 = node2.signrawtransactionwithkey(rawtx, self.priv[0:self.nsigs-1], prevtxs)
+        rawtx3 = node2.signrawtransactionwithkey(rawtx2["hex"], [self.priv[-1]], prevtxs)
+
+        self.moved += outval
+        tx = node0.sendrawtransaction(rawtx3["hex"], True)
+        blk = node0.generate(1)[0]
+        assert tx in node0.getblock(blk)["tx"]
+
+        txinfo = node0.getrawtransaction(tx, True, blk)
+        self.log.info("n/m=%d/%d %s size=%d vsize=%d weight=%d" % (self.nsigs, self.nkeys, self.output_type, txinfo["size"], txinfo["vsize"], txinfo["weight"]))
+
+if __name__ == '__main__':
+    RpcCreateMultiSigTest().main()

test/functional/test_runner.py

@@ -113,6 +113,7 @@
     'mining_prioritisetransaction.py',
     'p2p_invalid_block.py',
     'p2p_invalid_tx.py',
+    'rpc_createmultisig.py',
     'feature_versionbits_warning.py',
     'rpc_preciousblock.py',
     'wallet_importprunedfunds.py',