chainqueue/tests/common.py

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# standard imports
import hashlib
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# local imports
from chainqueue.cache import (
Cache,
CacheTokenTx,
)
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class MockCounter:
def __init__(self):
self.c = 0
def next(self):
c = self.c
self.c += 1
return c
class MockTokenCache(Cache):
def __init__(self):
self.db = {}
self.last_filter = None
def put(self, chain_spec, cache_tx):
self.db[cache_tx.tx_hash] = cache_tx
def get(self, chain_spec, tx_hash):
return self.db[tx_hash]
def by_nonce(self, cache_filter):
self.last_filter = cache_filter
def by_date(self, cache_filter=None):
self.last_filter = cache_filter
def count(self, cache_filter):
self.last_filter = cache_filter
class MockCacheTokenTx(CacheTokenTx):
def deserialize(self, signed_tx):
h = hashlib.sha1()
try:
h.update(signed_tx + b'\x01')
except TypeError:
h.update(signed_tx.encode('utf-8') + b'\x01')
z = h.digest()
nonce = int.from_bytes(z[:4], 'big')
token_value = int.from_bytes(z[4:8], 'big')
value = int.from_bytes(z[8:12], 'big')
h = hashlib.sha1()
h.update(z)
z = h.digest()
sender = z.hex()
h = hashlib.sha1()
h.update(z)
z = h.digest()
recipient = z.hex()
h = hashlib.sha1()
h.update(z)
z = h.digest()
token = z.hex()
h = hashlib.sha256()
h.update(z)
z = h.digest()
tx_hash = z.hex()
self.init(tx_hash, nonce, sender, recipient, value)
self.set('src_token', token)
self.set('dst_token', token)
self.set('src_value', token_value)
self.set('dst_value', token_value)
self.confirm(42, 13, 1024000)
return self
class MockContentStore:
def __init__(self):
self.store = {}
def put(self, k, v):
self.store[k] = v
def get(self, k):
return self.store.get(k)