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test/test_mutable: test for incorrect div_ceil equations

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This commit is contained in:
Kevan Carstensen 2011-08-13 11:39:36 -07:00
parent 3423b7d6f7
commit b49986f801
1 changed files with 23 additions and 1 deletions
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24
src/allmydata/test/test_mutable.py
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@ -7,7 +7,7 @@ from twisted.internet.interfaces import IConsumer
from zope.interface import implements from zope.interface import implements
from allmydata import uri, client from allmydata import uri, client
from allmydata.nodemaker import NodeMaker from allmydata.nodemaker import NodeMaker
from allmydata.util import base32, consumer, fileutil from allmydata.util import base32, consumer, fileutil, mathutil
from allmydata.util.hashutil import tagged_hash, ssk_writekey_hash, \ from allmydata.util.hashutil import tagged_hash, ssk_writekey_hash, \
ssk_pubkey_fingerprint_hash ssk_pubkey_fingerprint_hash
from allmydata.util.deferredutil import gatherResults from allmydata.util.deferredutil import gatherResults
@ -3222,6 +3222,28 @@ class Version(GridTestMixin, unittest.TestCase, testutil.ShouldFailMixin, \
d.addCallback(_read_data) d.addCallback(_read_data)
return d return d
def test_partial_read_starting_on_segment_boundary(self):
d = self.mdmf_node.get_best_readable_version()
c = consumer.MemoryConsumer()
offset = mathutil.next_multiple(128 * 1024, 3)
d.addCallback(lambda version:
version.read(c, offset, 50))
expected = self.data[offset:offset+50]
d.addCallback(lambda ignored:
self.failUnlessEqual(expected, "".join(c.chunks)))
return d
def test_partial_read_ending_on_segment_boundary(self):
d = self.mdmf_node.get_best_readable_version()
c = consumer.MemoryConsumer()
offset = mathutil.next_multiple(128 * 1024, 3)
start = offset - 50
d.addCallback(lambda version:
version.read(c, start, 51))
expected = self.data[offset-50:offset+1]
d.addCallback(lambda ignored:
self.failUnlessEqual(expected, "".join(c.chunks)))
return d
def test_read(self): def test_read(self):
d = self.mdmf_node.get_best_readable_version() d = self.mdmf_node.get_best_readable_version()