dirstate-v2: no longer register the data-file during transaction
If the data file change during the transaction, we cannot truncate it.
The content of the file itself is fine as it will get backed up at the same time
as the docket.
Leaving the trailing data at the end of failed transaction is fine. The
dirstate-v2 format supports it. The dead data will simply we written over if
necessary.
import unittest
from mercurial import policy
PartialDiscovery = policy.importrust('discovery', member='PartialDiscovery')
try:
from mercurial.cext import parsers as cparsers
except ImportError:
cparsers = None
# picked from test-parse-index2, copied rather than imported
# so that it stays stable even if test-parse-index2 changes or disappears.
data_non_inlined = (
b'\x00\x00\x00\x01\x00\x00\x00\x00\x00\x01D\x19'
b'\x00\x07e\x12\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff'
b'\xff\xff\xff\xff\xd1\xf4\xbb\xb0\xbe\xfc\x13\xbd\x8c\xd3\x9d'
b'\x0f\xcd\xd9;\x8c\x07\x8cJ/\x00\x00\x00\x00\x00\x00\x00\x00\x00'
b'\x00\x00\x00\x00\x00\x00\x01D\x19\x00\x00\x00\x00\x00\xdf\x00'
b'\x00\x01q\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x00\xff'
b'\xff\xff\xff\xc1\x12\xb9\x04\x96\xa4Z1t\x91\xdfsJ\x90\xf0\x9bh'
b'\x07l&\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
b'\x00\x01D\xf8\x00\x00\x00\x00\x01\x1b\x00\x00\x01\xb8\x00\x00'
b'\x00\x01\x00\x00\x00\x02\x00\x00\x00\x01\xff\xff\xff\xff\x02\n'
b'\x0e\xc6&\xa1\x92\xae6\x0b\x02i\xfe-\xe5\xbao\x05\xd1\xe7\x00'
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01F'
b'\x13\x00\x00\x00\x00\x01\xec\x00\x00\x03\x06\x00\x00\x00\x01'
b'\x00\x00\x00\x03\x00\x00\x00\x02\xff\xff\xff\xff\x12\xcb\xeby1'
b'\xb6\r\x98B\xcb\x07\xbd`\x8f\x92\xd9\xc4\x84\xbdK\x00\x00\x00'
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00'
)
class fakechangelog:
def __init__(self, idx):
self.index = idx
class fakerepo:
def __init__(self, idx):
"""Just make so that self.changelog.index is the given idx."""
self.changelog = fakechangelog(idx)
@unittest.skipIf(
PartialDiscovery is None or cparsers is None,
"rustext or the C Extension parsers module "
"discovery relies on is not available",
)
class rustdiscoverytest(unittest.TestCase):
"""Test the correctness of binding to Rust code.
This test is merely for the binding to Rust itself: extraction of
Python variable, giving back the results etc.
It is not meant to test the algorithmic correctness of the provided
methods. Hence the very simple embedded index data is good enough.
Algorithmic correctness is asserted by the Rust unit tests.
"""
def parseindex(self):
return cparsers.parse_index2(data_non_inlined, False)[0]
def repo(self):
return fakerepo(self.parseindex())
def testindex(self):
idx = self.parseindex()
# checking our assumptions about the index binary data:
self.assertEqual(
{i: (r[5], r[6]) for i, r in enumerate(idx)},
{0: (-1, -1), 1: (0, -1), 2: (1, -1), 3: (2, -1)},
)
def testaddcommonsmissings(self):
disco = PartialDiscovery(self.repo(), [3], True)
self.assertFalse(disco.hasinfo())
self.assertFalse(disco.iscomplete())
disco.addcommons([1])
self.assertTrue(disco.hasinfo())
self.assertFalse(disco.iscomplete())
disco.addmissings([2])
self.assertTrue(disco.hasinfo())
self.assertTrue(disco.iscomplete())
self.assertEqual(disco.commonheads(), {1})
def testaddmissingsstats(self):
disco = PartialDiscovery(self.repo(), [3], True)
self.assertIsNone(disco.stats()['undecided'], None)
disco.addmissings([2])
self.assertEqual(disco.stats()['undecided'], 2)
def testaddinfocommonfirst(self):
disco = PartialDiscovery(self.repo(), [3], True)
disco.addinfo([(1, True), (2, False)])
self.assertTrue(disco.hasinfo())
self.assertTrue(disco.iscomplete())
self.assertEqual(disco.commonheads(), {1})
def testaddinfomissingfirst(self):
disco = PartialDiscovery(self.repo(), [3], True)
disco.addinfo([(2, False), (1, True)])
self.assertTrue(disco.hasinfo())
self.assertTrue(disco.iscomplete())
self.assertEqual(disco.commonheads(), {1})
def testinitnorandom(self):
PartialDiscovery(self.repo(), [3], True, randomize=False)
if __name__ == '__main__':
import silenttestrunner
silenttestrunner.main(__name__)