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tests: Add a sha256sum_file function to util

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Andrew Chow 2020-04-30 01:05:55 -04:00
parent 0bd995aa19
commit 092fc43485
1 changed files with 9 additions and 0 deletions
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9
test/functional/test_framework/util.py
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@ -8,6 +8,7 @@ from base64 import b64encode
from binascii import unhexlify
from decimal import Decimal, ROUND_DOWN
from subprocess import CalledProcessError
import hashlib
import inspect
import json
import logging
@ -260,6 +261,14 @@ def wait_until_helper(predicate, *, attempts=float('inf'), timeout=float('inf'),
raise AssertionError("Predicate {} not true after {} seconds".format(predicate_source, timeout))
raise RuntimeError('Unreachable')
def sha256sum_file(filename):
h = hashlib.sha256()
with open(filename, 'rb') as f:
d = f.read(4096)
while len(d) > 0:
h.update(d)
d = f.read(4096)
return h.digest()
# RPC/P2P connection constants and functions
############################################