forked from LBRYCommunity/lbry-sdk
133 lines
No EOL
5.1 KiB
Python
133 lines
No EOL
5.1 KiB
Python
import asyncio
|
|
import os
|
|
import tempfile
|
|
from urllib.request import Request, urlopen
|
|
|
|
from torba.testcase import AsyncioTestCase
|
|
|
|
from torba.coin.bitcoinsegwit import MainHeaders
|
|
|
|
|
|
def block_bytes(blocks):
|
|
return blocks * MainHeaders.header_size
|
|
|
|
|
|
class BitcoinHeadersTestCase(AsyncioTestCase):
|
|
HEADER_FILE = 'bitcoin_headers'
|
|
RETARGET_BLOCK = 32256 # difficulty: 1 -> 1.18
|
|
|
|
def setUp(self):
|
|
self.maxDiff = None
|
|
self.header_file_name = os.path.join(os.path.dirname(__file__), self.HEADER_FILE)
|
|
|
|
def get_bytes(self, upto: int = -1, after: int = 0) -> bytes:
|
|
with open(self.header_file_name, 'rb') as headers:
|
|
headers.seek(after, os.SEEK_SET)
|
|
return headers.read(upto)
|
|
|
|
async def get_headers(self, upto: int = -1):
|
|
h = MainHeaders(':memory:')
|
|
h.io.write(self.get_bytes(upto))
|
|
return h
|
|
|
|
|
|
class BasicHeadersTests(BitcoinHeadersTestCase):
|
|
|
|
async def test_serialization(self):
|
|
h = await self.get_headers()
|
|
self.assertEqual(h[0], {
|
|
'bits': 486604799,
|
|
'block_height': 0,
|
|
'merkle_root': b'4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b',
|
|
'nonce': 2083236893,
|
|
'prev_block_hash': b'0000000000000000000000000000000000000000000000000000000000000000',
|
|
'timestamp': 1231006505,
|
|
'version': 1
|
|
})
|
|
self.assertEqual(h[self.RETARGET_BLOCK-1], {
|
|
'bits': 486604799,
|
|
'block_height': 32255,
|
|
'merkle_root': b'89b4f223789e40b5b475af6483bb05bceda54059e17d2053334b358f6bb310ac',
|
|
'nonce': 312762301,
|
|
'prev_block_hash': b'000000006baebaa74cecde6c6787c26ee0a616a3c333261bff36653babdac149',
|
|
'timestamp': 1262152739,
|
|
'version': 1
|
|
})
|
|
self.assertEqual(h[self.RETARGET_BLOCK], {
|
|
'bits': 486594666,
|
|
'block_height': 32256,
|
|
'merkle_root': b'64b5e5f5a262f47af443a0120609206a3305877693edfe03e994f20a024ab627',
|
|
'nonce': 121087187,
|
|
'prev_block_hash': b'00000000984f962134a7291e3693075ae03e521f0ee33378ec30a334d860034b',
|
|
'timestamp': 1262153464,
|
|
'version': 1
|
|
})
|
|
self.assertEqual(h[self.RETARGET_BLOCK+1], {
|
|
'bits': 486594666,
|
|
'block_height': 32257,
|
|
'merkle_root': b'4d1488981f08b3037878193297dbac701a2054e0f803d4424fe6a4d763d62334',
|
|
'nonce': 274675219,
|
|
'prev_block_hash': b'000000004f2886a170adb7204cb0c7a824217dd24d11a74423d564c4e0904967',
|
|
'timestamp': 1262154352,
|
|
'version': 1
|
|
})
|
|
self.assertEqual(
|
|
h.serialize(h[0]),
|
|
h.get_raw_header(0)
|
|
)
|
|
self.assertEqual(
|
|
h.serialize(h[self.RETARGET_BLOCK]),
|
|
h.get_raw_header(self.RETARGET_BLOCK)
|
|
)
|
|
|
|
async def test_connect_from_genesis_to_3000_past_first_chunk_at_2016(self):
|
|
headers = MainHeaders(':memory:')
|
|
self.assertEqual(headers.height, -1)
|
|
await headers.connect(0, self.get_bytes(block_bytes(3001)))
|
|
self.assertEqual(headers.height, 3000)
|
|
|
|
async def test_connect_9_blocks_passing_a_retarget_at_32256(self):
|
|
retarget = block_bytes(self.RETARGET_BLOCK-5)
|
|
headers = await self.get_headers(upto=retarget)
|
|
remainder = self.get_bytes(after=retarget)
|
|
self.assertEqual(headers.height, 32250)
|
|
await headers.connect(len(headers), remainder)
|
|
self.assertEqual(headers.height, 32259)
|
|
|
|
async def test_repair(self):
|
|
headers = MainHeaders(':memory:')
|
|
await headers.connect(0, self.get_bytes(block_bytes(3001)))
|
|
self.assertEqual(headers.height, 3000)
|
|
await headers.repair()
|
|
self.assertEqual(headers.height, 3000)
|
|
# corrupt the middle of it
|
|
headers.io.seek(block_bytes(1500))
|
|
headers.io.write(b"wtf")
|
|
await headers.repair()
|
|
self.assertEqual(headers.height, 1499)
|
|
self.assertEqual(len(headers), 1500)
|
|
# corrupt by appending
|
|
headers.io.seek(block_bytes(len(headers)))
|
|
headers.io.write(b"appending")
|
|
await headers.repair()
|
|
self.assertEqual(headers.height, 1499)
|
|
await headers.connect(len(headers), self.get_bytes(block_bytes(3001 - 1500), after=block_bytes(1500)))
|
|
self.assertEqual(headers.height, 3000)
|
|
|
|
async def test_concurrency(self):
|
|
BLOCKS = 30
|
|
headers_temporary_file = tempfile.mktemp()
|
|
headers = MainHeaders(headers_temporary_file)
|
|
await headers.open()
|
|
self.addCleanup(os.remove, headers_temporary_file)
|
|
async def writer():
|
|
for block_index in range(BLOCKS):
|
|
await headers.connect(block_index, self.get_bytes(block_bytes(block_index + 1), block_bytes(block_index)))
|
|
async def reader():
|
|
for block_index in range(BLOCKS):
|
|
while len(headers) < block_index:
|
|
await asyncio.sleep(0.000001)
|
|
assert headers[block_index]['block_height'] == block_index
|
|
reader_task = asyncio.create_task(reader())
|
|
await writer()
|
|
await reader_task |