def test_add_longer_side_chain(db, alt_db):
""""
Local: L0, L1, L2
Remote: R0, R1, R2, R3
"""
k, v, k2, v2 = accounts()
# Remote: mine three blocks
chainR = Chain({v: {"balance": utils.denoms.ether * 1}}, difficulty=1)
remote_blocks = []
for i in range(3):
tx = get_transaction(nonce=i)
blk = mine_next_block(chainR, transactions=[tx])
remote_blocks.append(blk)
# Local: mine two blocks
chainL = Chain({v: {"balance": utils.denoms.ether * 1}}, difficulty=1)
tx0 = get_transaction(nonce=0)
L1 = mine_next_block(chainL, transactions=[tx0])
tx1 = get_transaction(nonce=1)
L2 = mine_next_block(chainL, transactions=[tx1])
# receive serialized remote blocks, newest first
rlp_blocks = [rlp.encode(x) for x in remote_blocks]
for rlp_block in rlp_blocks:
block = rlp.decode(rlp_block, Block)
chainL.add_block(block)
assert chainL.head == remote_blocks[-1]
def test_add_side_chain(db, alt_db):
""""
Local: L0, L1, L2
add
Remote: R0, R1
"""
k, v, k2, v2 = accounts()
# Remote: mine one block
chainR = Chain({v: {"balance": utils.denoms.ether * 1}}, difficulty=1)
tx0 = get_transaction(nonce=0)
R1 = mine_next_block(chainR, transactions=[tx0])
assert tx0.hash in [x.hash for x in R1.transactions]
# Local: mine two blocks
chainL = Chain({v: {"balance": utils.denoms.ether * 1}}, difficulty=1)
tx0 = get_transaction(nonce=0)
L1 = mine_next_block(chainL, transactions=[tx0])
tx1 = get_transaction(nonce=1)
L2 = mine_next_block(chainL, transactions=[tx1])
# receive serialized remote blocks, newest first
rlp_blocks = [rlp.encode(R1)]
for rlp_block in rlp_blocks:
block = rlp.decode(rlp_block, Block)
chainL.add_block(block)
assert L2.hash in chainL
assert chainL.head == L2