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The block height validation is gated by the startup option `con_blockheightinheader`, accesible in custom chains only using option `chain=<name>`. Only if set to true will this field be (de)serialized and evaluated in consensus logic. Otherwise the field is simply ignored, other than being stored in memory as the default value 0.
136 lines
5.5 KiB
Python
Executable file
136 lines
5.5 KiB
Python
Executable file
#!/usr/bin/env python3
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# Copyright (c) 2014-2018 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Test mining RPCs
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- getmininginfo
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- getblocktemplate proposal mode
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- submitblock"""
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import copy
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from binascii import b2a_hex
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from decimal import Decimal
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from test_framework.blocktools import create_coinbase
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from test_framework.messages import CBlock
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import assert_equal, assert_raises_rpc_error
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def b2x(b):
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return b2a_hex(b).decode('ascii')
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def assert_template(node, block, expect, rehash=True):
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if rehash:
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block.hashMerkleRoot = block.calc_merkle_root()
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rsp = node.getblocktemplate({'data': b2x(block.serialize()), 'mode': 'proposal'})
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assert_equal(rsp, expect)
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class MiningTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 2
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self.setup_clean_chain = False
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def run_test(self):
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node = self.nodes[0]
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self.log.info('getmininginfo')
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mining_info = node.getmininginfo()
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assert_equal(mining_info['blocks'], 200)
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assert_equal(mining_info['chain'], self.chain)
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assert_equal(mining_info['currentblocktx'], 0)
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assert_equal(mining_info['currentblockweight'], 0)
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assert_equal(mining_info['difficulty'], Decimal('4.656542373906925E-10'))
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assert_equal(mining_info['networkhashps'], Decimal('0.003333333333333334'))
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assert_equal(mining_info['pooledtx'], 0)
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# Mine a block to leave initial block download
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node.generate(1)
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tmpl = node.getblocktemplate()
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self.log.info("getblocktemplate: Test capability advertised")
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assert 'proposal' in tmpl['capabilities']
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assert 'coinbasetxn' not in tmpl
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coinbase_tx = create_coinbase(height=int(tmpl["height"]) + 1)
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# sequence numbers must not be max for nLockTime to have effect
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coinbase_tx.vin[0].nSequence = 2 ** 32 - 2
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coinbase_tx.rehash()
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block = CBlock()
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block.nVersion = tmpl["version"]
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block.hashPrevBlock = int(tmpl["previousblockhash"], 16)
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block.nTime = tmpl["curtime"]
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block.block_height = node.getblockcount()+1
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block.nBits = int(tmpl["bits"], 16)
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block.nNonce = 0
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block.vtx = [coinbase_tx]
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self.log.info("getblocktemplate: Test valid block")
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assert_template(node, block, None)
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self.log.info("submitblock: Test block decode failure")
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assert_raises_rpc_error(-22, "Block decode failed", node.submitblock, b2x(block.serialize()[:-15]))
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self.log.info("getblocktemplate: Test bad input hash for coinbase transaction")
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bad_block = copy.deepcopy(block)
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bad_block.vtx[0].vin[0].prevout.hash += 1
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bad_block.vtx[0].rehash()
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assert_template(node, bad_block, 'bad-cb-missing')
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self.log.info("submitblock: Test invalid coinbase transaction")
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assert_raises_rpc_error(-22, "Block does not start with a coinbase", node.submitblock, b2x(bad_block.serialize()))
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self.log.info("getblocktemplate: Test truncated final transaction")
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assert_raises_rpc_error(-22, "Block decode failed", node.getblocktemplate, {'data': b2x(block.serialize()[:-1]), 'mode': 'proposal'})
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self.log.info("getblocktemplate: Test duplicate transaction")
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bad_block = copy.deepcopy(block)
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bad_block.vtx.append(bad_block.vtx[0])
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assert_template(node, bad_block, 'bad-txns-duplicate')
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self.log.info("getblocktemplate: Test invalid transaction")
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bad_block = copy.deepcopy(block)
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bad_tx = copy.deepcopy(bad_block.vtx[0])
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bad_tx.vin[0].prevout.hash = 255
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bad_tx.rehash()
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bad_block.vtx.append(bad_tx)
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assert_template(node, bad_block, 'bad-txns-inputs-missingorspent')
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self.log.info("getblocktemplate: Test nonfinal transaction")
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bad_block = copy.deepcopy(block)
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bad_block.vtx[0].nLockTime = 2 ** 32 - 1
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bad_block.vtx[0].rehash()
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assert_template(node, bad_block, 'bad-txns-nonfinal')
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self.log.info("getblocktemplate: Test bad tx count")
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# The tx count is immediately after the block header
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TX_COUNT_OFFSET = 80+4 # height is extra 4
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bad_block_sn = bytearray(block.serialize())
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assert_equal(bad_block_sn[TX_COUNT_OFFSET], 1)
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bad_block_sn[TX_COUNT_OFFSET] += 1
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assert_raises_rpc_error(-22, "Block decode failed", node.getblocktemplate, {'data': b2x(bad_block_sn), 'mode': 'proposal'})
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self.log.info("getblocktemplate: Test bad bits")
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bad_block = copy.deepcopy(block)
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bad_block.nBits = 469762303 # impossible in the real world
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assert_template(node, bad_block, 'bad-diffbits')
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self.log.info("getblocktemplate: Test bad merkle root")
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bad_block = copy.deepcopy(block)
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bad_block.hashMerkleRoot += 1
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assert_template(node, bad_block, 'bad-txnmrklroot', False)
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self.log.info("getblocktemplate: Test bad timestamps")
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bad_block = copy.deepcopy(block)
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bad_block.nTime = 2 ** 31 - 1
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assert_template(node, bad_block, 'time-too-new')
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bad_block.nTime = 0
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assert_template(node, bad_block, 'time-too-old')
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self.log.info("getblocktemplate: Test not best block")
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bad_block = copy.deepcopy(block)
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bad_block.hashPrevBlock = 123
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assert_template(node, bad_block, 'inconclusive-not-best-prevblk')
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if __name__ == '__main__':
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MiningTest().main()
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