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-rwxr-xr-xtest/functional/mining.py124
1 files changed, 124 insertions, 0 deletions
diff --git a/test/functional/mining.py b/test/functional/mining.py
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+++ b/test/functional/mining.py
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+#!/usr/bin/env python3
+# Copyright (c) 2014-2016 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 mining RPCs
+
+- getblocktemplate proposal mode
+- submitblock"""
+
+from binascii import b2a_hex
+import copy
+
+from test_framework.blocktools import create_coinbase
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.mininode import CBlock
+from test_framework.util import *
+
+def b2x(b):
+ return b2a_hex(b).decode('ascii')
+
+def assert_template(node, block, expect, rehash=True):
+ if rehash:
+ block.hashMerkleRoot = block.calc_merkle_root()
+ rsp = node.getblocktemplate({'data': b2x(block.serialize()), 'mode': 'proposal'})
+ assert_equal(rsp, expect)
+
+class MiningTest(BitcoinTestFramework):
+
+ def __init__(self):
+ super().__init__()
+ self.num_nodes = 2
+ self.setup_clean_chain = False
+
+ def run_test(self):
+ node = self.nodes[0]
+ # Mine a block to leave initial block download
+ node.generate(1)
+ tmpl = node.getblocktemplate()
+ self.log.info("getblocktemplate: Test capability advertised")
+ assert 'proposal' in tmpl['capabilities']
+ assert 'coinbasetxn' not in tmpl
+
+ coinbase_tx = create_coinbase(height=int(tmpl["height"]) + 1)
+ # sequence numbers must not be max for nLockTime to have effect
+ coinbase_tx.vin[0].nSequence = 2 ** 32 - 2
+ coinbase_tx.rehash()
+
+ block = CBlock()
+ block.nVersion = tmpl["version"]
+ block.hashPrevBlock = int(tmpl["previousblockhash"], 16)
+ block.nTime = tmpl["curtime"]
+ block.nBits = int(tmpl["bits"], 16)
+ block.nNonce = 0
+ block.vtx = [coinbase_tx]
+
+ self.log.info("getblocktemplate: Test valid block")
+ assert_template(node, block, None)
+
+ self.log.info("submitblock: Test block decode failure")
+ assert_raises_jsonrpc(-22, "Block decode failed", node.submitblock, b2x(block.serialize()[:-15]))
+
+ self.log.info("getblocktemplate: Test bad input hash for coinbase transaction")
+ bad_block = copy.deepcopy(block)
+ bad_block.vtx[0].vin[0].prevout.hash += 1
+ bad_block.vtx[0].rehash()
+ assert_template(node, bad_block, 'bad-cb-missing')
+
+ self.log.info("submitblock: Test invalid coinbase transaction")
+ assert_raises_jsonrpc(-22, "Block does not start with a coinbase", node.submitblock, b2x(bad_block.serialize()))
+
+ self.log.info("getblocktemplate: Test truncated final transaction")
+ assert_raises_jsonrpc(-22, "Block decode failed", node.getblocktemplate, {'data': b2x(block.serialize()[:-1]), 'mode': 'proposal'})
+
+ self.log.info("getblocktemplate: Test duplicate transaction")
+ bad_block = copy.deepcopy(block)
+ bad_block.vtx.append(bad_block.vtx[0])
+ assert_template(node, bad_block, 'bad-txns-duplicate')
+
+ self.log.info("getblocktemplate: Test invalid transaction")
+ bad_block = copy.deepcopy(block)
+ bad_tx = copy.deepcopy(bad_block.vtx[0])
+ bad_tx.vin[0].prevout.hash = 255
+ bad_tx.rehash()
+ bad_block.vtx.append(bad_tx)
+ assert_template(node, bad_block, 'bad-txns-inputs-missingorspent')
+
+ self.log.info("getblocktemplate: Test nonfinal transaction")
+ bad_block = copy.deepcopy(block)
+ bad_block.vtx[0].nLockTime = 2 ** 32 - 1
+ bad_block.vtx[0].rehash()
+ assert_template(node, bad_block, 'bad-txns-nonfinal')
+
+ self.log.info("getblocktemplate: Test bad tx count")
+ # The tx count is immediately after the block header
+ TX_COUNT_OFFSET = 80
+ bad_block_sn = bytearray(block.serialize())
+ assert_equal(bad_block_sn[TX_COUNT_OFFSET], 1)
+ bad_block_sn[TX_COUNT_OFFSET] += 1
+ assert_raises_jsonrpc(-22, "Block decode failed", node.getblocktemplate, {'data': b2x(bad_block_sn), 'mode': 'proposal'})
+
+ self.log.info("getblocktemplate: Test bad bits")
+ bad_block = copy.deepcopy(block)
+ bad_block.nBits = 469762303 # impossible in the real world
+ assert_template(node, bad_block, 'bad-diffbits')
+
+ self.log.info("getblocktemplate: Test bad merkle root")
+ bad_block = copy.deepcopy(block)
+ bad_block.hashMerkleRoot += 1
+ assert_template(node, bad_block, 'bad-txnmrklroot', False)
+
+ self.log.info("getblocktemplate: Test bad timestamps")
+ bad_block = copy.deepcopy(block)
+ bad_block.nTime = 2 ** 31 - 1
+ assert_template(node, bad_block, 'time-too-new')
+ bad_block.nTime = 0
+ assert_template(node, bad_block, 'time-too-old')
+
+ self.log.info("getblocktemplate: Test not best block")
+ bad_block = copy.deepcopy(block)
+ bad_block.hashPrevBlock = 123
+ assert_template(node, bad_block, 'inconclusive-not-best-prevblk')
+
+if __name__ == '__main__':
+ MiningTest().main()