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test: check difficulty adjustment using alternate mainnet

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This commit is contained in:
Sjors Provoost
2024-12-31 14:48:40 +01:00
parent c4f68c12e2
commit 4131f322ac
5 changed files with 4196 additions and 2 deletions
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14
test/functional/test_framework/blocktools.py
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@ -66,10 +66,20 @@ NORMAL_GBT_REQUEST_PARAMS = {"rules": ["segwit"]}
VERSIONBITS_LAST_OLD_BLOCK_VERSION = 4
MIN_BLOCKS_TO_KEEP = 288
REGTEST_RETARGET_PERIOD = 150
REGTEST_N_BITS = 0x207fffff # difficulty retargeting is disabled in REGTEST chainparams"
REGTEST_TARGET = 0x7fffff0000000000000000000000000000000000000000000000000000000000
assert_equal(uint256_from_compact(REGTEST_N_BITS), REGTEST_TARGET)
DIFF_1_N_BITS = 0x1d00ffff
DIFF_1_TARGET = 0x00000000ffff0000000000000000000000000000000000000000000000000000
assert_equal(uint256_from_compact(DIFF_1_N_BITS), DIFF_1_TARGET)
DIFF_4_N_BITS = 0x1c3fffc0
DIFF_4_TARGET = int(DIFF_1_TARGET / 4)
assert_equal(uint256_from_compact(DIFF_4_N_BITS), DIFF_4_TARGET)
def nbits_str(nbits):
return f"{nbits:08x}"
@ -133,7 +143,7 @@ def script_BIP34_coinbase_height(height):
return CScript([CScriptNum(height)])
def create_coinbase(height, pubkey=None, *, script_pubkey=None, extra_output_script=None, fees=0, nValue=50):
def create_coinbase(height, pubkey=None, *, script_pubkey=None, extra_output_script=None, fees=0, nValue=50, retarget_period=REGTEST_RETARGET_PERIOD):
"""Create a coinbase transaction.
If pubkey is passed in, the coinbase output will be a P2PK output;
@ -146,7 +156,7 @@ def create_coinbase(height, pubkey=None, *, script_pubkey=None, extra_output_scr
coinbaseoutput = CTxOut()
coinbaseoutput.nValue = nValue * COIN
if nValue == 50:
halvings = int(height / 150) # regtest
halvings = int(height / retarget_period)
coinbaseoutput.nValue >>= halvings
coinbaseoutput.nValue += fees
if pubkey is not None: