Add failing test checking timelocked-txn removal during reorg

Author: TheBlueMatt

qa/pull-tester/rpc-tests.py

@@ -77,7 +77,7 @@
     'rawtransactions.py',
     'rest.py',
     'mempool_spendcoinbase.py',
-    'mempool_coinbase_spends.py',
+    'mempool_reorg.py',
     'httpbasics.py',
     'zapwallettxes.py',
     'proxy_test.py',

qa/rpc-tests/mempool_coinbase_spends.py renamed to qa/rpc-tests/mempool_reorg.py

@@ -52,32 +52,46 @@ def run_test(self):
         # 3. Indirect (coinbase and child both in chain) : spend_103 and spend_103_1
         # Use invalidatblock to make all of the above coinbase spends invalid (immature coinbase),
         # and make sure the mempool code behaves correctly.
-        b = [ self.nodes[0].getblockhash(n) for n in range(102, 105) ]
+        b = [ self.nodes[0].getblockhash(n) for n in range(101, 105) ]
         coinbase_txids = [ self.nodes[0].getblock(h)['tx'][0] for h in b ]
-        spend_101_raw = self.create_tx(coinbase_txids[0], node1_address, 50)
-        spend_102_raw = self.create_tx(coinbase_txids[1], node0_address, 50)
-        spend_103_raw = self.create_tx(coinbase_txids[2], node0_address, 50)
+        spend_101_raw = self.create_tx(coinbase_txids[1], node1_address, 50)
+        spend_102_raw = self.create_tx(coinbase_txids[2], node0_address, 50)
+        spend_103_raw = self.create_tx(coinbase_txids[3], node0_address, 50)
+
+        # Create a block-height-locked transaction which will be invalid after reorg
+        timelock_tx = self.nodes[0].createrawtransaction([{"txid": coinbase_txids[0], "vout": 0}], {node0_address: 50})
+        # Set the time lock
+        timelock_tx = timelock_tx.replace("ffffffff", "11111111", 1)
+        timelock_tx = timelock_tx[:-8] + hex(self.nodes[0].getblockcount() + 2)[2:] + "000000"
+        timelock_tx = self.nodes[0].signrawtransaction(timelock_tx)["hex"]
+        assert_raises(JSONRPCException, self.nodes[0].sendrawtransaction, timelock_tx)
 
         # Broadcast and mine spend_102 and 103:
         spend_102_id = self.nodes[0].sendrawtransaction(spend_102_raw)
         spend_103_id = self.nodes[0].sendrawtransaction(spend_103_raw)
         self.nodes[0].generate(1)
+        assert_raises(JSONRPCException, self.nodes[0].sendrawtransaction, timelock_tx)
 
         # Create 102_1 and 103_1:
         spend_102_1_raw = self.create_tx(spend_102_id, node1_address, 50)
         spend_103_1_raw = self.create_tx(spend_103_id, node1_address, 50)
 
         # Broadcast and mine 103_1:
         spend_103_1_id = self.nodes[0].sendrawtransaction(spend_103_1_raw)
-        self.nodes[0].generate(1)
+        last_block = self.nodes[0].generate(1)
+        timelock_tx_id = self.nodes[0].sendrawtransaction(timelock_tx)
 
         # ... now put spend_101 and spend_102_1 in memory pools:
         spend_101_id = self.nodes[0].sendrawtransaction(spend_101_raw)
         spend_102_1_id = self.nodes[0].sendrawtransaction(spend_102_1_raw)
 
         self.sync_all()
 
-        assert_equal(set(self.nodes[0].getrawmempool()), set([ spend_101_id, spend_102_1_id ]))
+        assert_equal(set(self.nodes[0].getrawmempool()), set([ spend_101_id, spend_102_1_id, timelock_tx_id ]))
+
+        for node in self.nodes:
+            node.invalidateblock(last_block[0])
+        assert_equal(set(self.nodes[0].getrawmempool()), set([ spend_101_id, spend_102_1_id, spend_103_1_id ]))
 
         # Use invalidateblock to re-org back and make all those coinbase spends
         # immature/invalid: