sapling/tests/test-lfs-pointer.py
Jun Wu a024f96812 lfs: add validation to pointer
Summary:
Read the Git-LFS specification [1] and implement most checks to prevent
programming error and detect data corruption.

The new code should be stronger than what was before the refactoring, since the
old code only checks keys but not values.

[1]: https://github.com/git-lfs/git-lfs/blob/master/docs/spec.md

Test Plan: Added a new test

Reviewers: #mercurial, davidsp, rmcelroy

Reviewed By: rmcelroy

Subscribers: mjpieters

Differential Revision: https://phabricator.intern.facebook.com/D5046740

Signature: t1:5046740:1494543072:2f0dbfc07cd52a10572550a277d850bdf3f78d27
2017-05-11 17:51:44 -07:00

42 lines
1.2 KiB
Python

from __future__ import absolute_import, print_function
import os
import sys
# make it runnable using python directly without run-tests.py
sys.path[0:0] = [os.path.join(os.path.dirname(__file__), '..')]
from hgext3rd.lfs import pointer
def tryparse(text):
r = {}
try:
r = pointer.deserialize(text)
print('ok')
except Exception as ex:
print(ex)
if r:
text2 = r.serialize()
if text2 != text:
print('reconstructed text differs')
return r
t = ('version https://git-lfs.github.com/spec/v1\n'
'oid sha256:4d7a214614ab2935c943f9e0ff69d22eadbb8f32b1'
'258daaa5e2ca24d17e2393\n'
'size 12345\n'
'x-foo extra-information\n')
tryparse('')
tryparse(t)
tryparse(t.replace('git-lfs', 'unknown'))
tryparse(t.replace('v1\n', 'v1\n\n'))
tryparse(t.replace('sha256', 'ahs256'))
tryparse(t.replace('sha256:', ''))
tryparse(t.replace('12345', '0x12345'))
tryparse(t.replace('extra-information', 'extra\0information'))
tryparse(t.replace('extra-information', 'extra\ninformation'))
tryparse(t.replace('x-foo', 'x_foo'))
tryparse(t.replace('oid', 'blobid'))
tryparse(t.replace('size', 'size-bytes').replace('oid', 'object-id'))