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-rwxr-xr-xtest/functional/invalidblockrequest.py117
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diff --git a/test/functional/invalidblockrequest.py b/test/functional/invalidblockrequest.py
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-#!/usr/bin/env python3
-# Copyright (c) 2015-2016 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 node responses to invalid blocks.
-
-In this test we connect to one node over p2p, and test block requests:
-1) Valid blocks should be requested and become chain tip.
-2) Invalid block with duplicated transaction should be re-requested.
-3) Invalid block with bad coinbase value should be rejected and not
-re-requested.
-"""
-
-from test_framework.test_framework import ComparisonTestFramework
-from test_framework.util import *
-from test_framework.comptool import TestManager, TestInstance, RejectResult
-from test_framework.blocktools import *
-from test_framework.mininode import network_thread_start
-import copy
-import time
-
-# Use the ComparisonTestFramework with 1 node: only use --testbinary.
-class InvalidBlockRequestTest(ComparisonTestFramework):
-
- ''' Can either run this test as 1 node with expected answers, or two and compare them.
- Change the "outcome" variable from each TestInstance object to only do the comparison. '''
- def set_test_params(self):
- self.num_nodes = 1
- self.setup_clean_chain = True
-
- def run_test(self):
- test = TestManager(self, self.options.tmpdir)
- test.add_all_connections(self.nodes)
- self.tip = None
- self.block_time = None
- network_thread_start()
- test.run()
-
- def get_tests(self):
- if self.tip is None:
- self.tip = int("0x" + self.nodes[0].getbestblockhash(), 0)
- self.block_time = int(time.time())+1
-
- '''
- Create a new block with an anyone-can-spend coinbase
- '''
- height = 1
- block = create_block(self.tip, create_coinbase(height), self.block_time)
- self.block_time += 1
- block.solve()
- # Save the coinbase for later
- self.block1 = block
- self.tip = block.sha256
- height += 1
- yield TestInstance([[block, True]])
-
- '''
- Now we need that block to mature so we can spend the coinbase.
- '''
- test = TestInstance(sync_every_block=False)
- for i in range(100):
- block = create_block(self.tip, create_coinbase(height), self.block_time)
- block.solve()
- self.tip = block.sha256
- self.block_time += 1
- test.blocks_and_transactions.append([block, True])
- height += 1
- yield test
-
- '''
- Now we use merkle-root malleability to generate an invalid block with
- same blockheader.
- Manufacture a block with 3 transactions (coinbase, spend of prior
- coinbase, spend of that spend). Duplicate the 3rd transaction to
- leave merkle root and blockheader unchanged but invalidate the block.
- '''
- block2 = create_block(self.tip, create_coinbase(height), self.block_time)
- self.block_time += 1
-
- # b'0x51' is OP_TRUE
- tx1 = create_transaction(self.block1.vtx[0], 0, b'\x51', 50 * COIN)
- tx2 = create_transaction(tx1, 0, b'\x51', 50 * COIN)
-
- block2.vtx.extend([tx1, tx2])
- block2.hashMerkleRoot = block2.calc_merkle_root()
- block2.rehash()
- block2.solve()
- orig_hash = block2.sha256
- block2_orig = copy.deepcopy(block2)
-
- # Mutate block 2
- block2.vtx.append(tx2)
- assert_equal(block2.hashMerkleRoot, block2.calc_merkle_root())
- assert_equal(orig_hash, block2.rehash())
- assert(block2_orig.vtx != block2.vtx)
-
- self.tip = block2.sha256
- yield TestInstance([[block2, RejectResult(16, b'bad-txns-duplicate')], [block2_orig, True]])
- height += 1
-
- '''
- Make sure that a totally screwed up block is not valid.
- '''
- block3 = create_block(self.tip, create_coinbase(height), self.block_time)
- self.block_time += 1
- block3.vtx[0].vout[0].nValue = 100 * COIN # Too high!
- block3.vtx[0].sha256=None
- block3.vtx[0].calc_sha256()
- block3.hashMerkleRoot = block3.calc_merkle_root()
- block3.rehash()
- block3.solve()
-
- yield TestInstance([[block3, RejectResult(16, b'bad-cb-amount')]])
-
-
-if __name__ == '__main__':
- InvalidBlockRequestTest().main()