tahoe-lafs/src/allmydata/test/mutable/test_different_encoding.py
2016-08-03 14:54:32 -04:00

25 lines
987 B
Python

from twisted.trial import unittest
from .util import FakeStorage, make_nodemaker
class DifferentEncoding(unittest.TestCase):
def setUp(self):
self._storage = s = FakeStorage()
self.nodemaker = make_nodemaker(s)
def test_filenode(self):
# create a file with 3-of-20, then modify it with a client configured
# to do 3-of-10. #1510 tracks a failure here
self.nodemaker.default_encoding_parameters["n"] = 20
d = self.nodemaker.create_mutable_file("old contents")
def _created(n):
filecap = n.get_cap().to_string()
del n # we want a new object, not the cached one
self.nodemaker.default_encoding_parameters["n"] = 10
n2 = self.nodemaker.create_from_cap(filecap)
return n2
d.addCallback(_created)
def modifier(old_contents, servermap, first_time):
return "new contents"
d.addCallback(lambda n: n.modify(modifier))
return d