diff options
Diffstat (limited to 'test/functional')
| -rwxr-xr-x | test/functional/mining_basic.py | 12 | ||||
| -rw-r--r-- | test/functional/test_framework/script.py | 16 |
2 files changed, 26 insertions, 2 deletions
diff --git a/test/functional/mining_basic.py b/test/functional/mining_basic.py index 9f01be0646..6e74731349 100755 --- a/test/functional/mining_basic.py +++ b/test/functional/mining_basic.py @@ -25,7 +25,7 @@ from test_framework.util import ( assert_raises_rpc_error, bytes_to_hex_str as b2x, ) - +from test_framework.script import CScriptNum def assert_template(node, block, expect, rehash=True): if rehash: @@ -65,11 +65,19 @@ class MiningTest(BitcoinTestFramework): assert 'proposal' in tmpl['capabilities'] assert 'coinbasetxn' not in tmpl - coinbase_tx = create_coinbase(height=int(tmpl["height"]) + 1) + next_height = int(tmpl["height"]) + coinbase_tx = create_coinbase(height=next_height) # sequence numbers must not be max for nLockTime to have effect coinbase_tx.vin[0].nSequence = 2 ** 32 - 2 coinbase_tx.rehash() + # round-trip the encoded bip34 block height commitment + assert_equal(CScriptNum.decode(coinbase_tx.vin[0].scriptSig), next_height) + # round-trip negative and multi-byte CScriptNums to catch python regression + assert_equal(CScriptNum.decode(CScriptNum.encode(CScriptNum(1500))), 1500) + assert_equal(CScriptNum.decode(CScriptNum.encode(CScriptNum(-1500))), -1500) + assert_equal(CScriptNum.decode(CScriptNum.encode(CScriptNum(-1))), -1) + block = CBlock() block.nVersion = tmpl["version"] block.hashPrevBlock = int(tmpl["previousblockhash"], 16) diff --git a/test/functional/test_framework/script.py b/test/functional/test_framework/script.py index 2fe44010ba..2c5ba24a6a 100644 --- a/test/functional/test_framework/script.py +++ b/test/functional/test_framework/script.py @@ -385,6 +385,22 @@ class CScriptNum: r[-1] |= 0x80 return bytes([len(r)]) + r + @staticmethod + def decode(vch): + result = 0 + # We assume valid push_size and minimal encoding + value = vch[1:] + if len(value) == 0: + return result + for i, byte in enumerate(value): + result |= int(byte) << 8*i + if value[-1] >= 0x80: + # Mask for all but the highest result bit + num_mask = (2**(len(value)*8) - 1) >> 1 + result &= num_mask + result *= -1 + return result + class CScript(bytes): """Serialized script |