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Make a test demonstrating the problem.

This commit is contained in:
Itamar Turner-Trauring 2022-12-15 13:14:49 -05:00
parent 87ff1706a9
commit 96347e22e2
1 changed files with 4 additions and 3 deletions
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7
src/allmydata/test/test_system.py
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@ -477,9 +477,10 @@ class SystemTest(SystemTestMixin, RunBinTahoeMixin, unittest.TestCase):
def _corrupt_mutable_share(self, filename, which): def _corrupt_mutable_share(self, filename, which):
msf = MutableShareFile(filename) msf = MutableShareFile(filename)
datav = msf.readv([ (0, 1000000) ]) # Read more than share length:
datav = msf.readv([ (0, 10_000_000) ])
final_share = datav[0] final_share = datav[0]
assert len(final_share) < 1000000 # ought to be truncated assert len(final_share) < 10_000_000 # ought to be truncated
pieces = mutable_layout.unpack_share(final_share) pieces = mutable_layout.unpack_share(final_share)
(seqnum, root_hash, IV, k, N, segsize, datalen, (seqnum, root_hash, IV, k, N, segsize, datalen,
verification_key, signature, share_hash_chain, block_hash_tree, verification_key, signature, share_hash_chain, block_hash_tree,
@ -524,7 +525,7 @@ class SystemTest(SystemTestMixin, RunBinTahoeMixin, unittest.TestCase):
DATA_uploadable = MutableData(DATA) DATA_uploadable = MutableData(DATA)
NEWDATA = b"new contents yay" NEWDATA = b"new contents yay"
NEWDATA_uploadable = MutableData(NEWDATA) NEWDATA_uploadable = MutableData(NEWDATA)
NEWERDATA = b"this is getting old" NEWERDATA = b"this is getting old" * 1_000_000
NEWERDATA_uploadable = MutableData(NEWERDATA) NEWERDATA_uploadable = MutableData(NEWERDATA)
d = self.set_up_nodes() d = self.set_up_nodes()