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 (
util,
wireprotoframing as framing,
)
ffs = framing.makeframefromhumanstring
class FrameHumanStringTests(unittest.TestCase):
def testbasic(self):
self.assertEqual(
ffs(b'1 1 0 1 0 '), b'\x00\x00\x00\x01\x00\x01\x00\x10'
)
self.assertEqual(
ffs(b'2 4 0 1 0 '), b'\x00\x00\x00\x02\x00\x04\x00\x10'
)
self.assertEqual(
ffs(b'2 4 0 1 0 foo'), b'\x03\x00\x00\x02\x00\x04\x00\x10foo'
)
def testcborint(self):
self.assertEqual(
ffs(b'1 1 0 1 0 cbor:15'), b'\x01\x00\x00\x01\x00\x01\x00\x10\x0f'
)
self.assertEqual(
ffs(b'1 1 0 1 0 cbor:42'), b'\x02\x00\x00\x01\x00\x01\x00\x10\x18*'
)
self.assertEqual(
ffs(b'1 1 0 1 0 cbor:1048576'),
b'\x05\x00\x00\x01\x00\x01\x00\x10\x1a' b'\x00\x10\x00\x00',
)
self.assertEqual(
ffs(b'1 1 0 1 0 cbor:0'), b'\x01\x00\x00\x01\x00\x01\x00\x10\x00'
)
self.assertEqual(
ffs(b'1 1 0 1 0 cbor:-1'), b'\x01\x00\x00\x01\x00\x01\x00\x10 '
)
self.assertEqual(
ffs(b'1 1 0 1 0 cbor:-342542'),
b'\x05\x00\x00\x01\x00\x01\x00\x10:\x00\x05:\r',
)
def testcborstrings(self):
self.assertEqual(
ffs(b"1 1 0 1 0 cbor:b'foo'"),
b'\x04\x00\x00\x01\x00\x01\x00\x10Cfoo',
)
def testcborlists(self):
self.assertEqual(
ffs(b"1 1 0 1 0 cbor:[None, True, False, 42, b'foo']"),
b'\n\x00\x00\x01\x00\x01\x00\x10\x85\xf6\xf5\xf4' b'\x18*Cfoo',
)
def testcbordicts(self):
self.assertEqual(
ffs(b"1 1 0 1 0 " b"cbor:{b'foo': b'val1', b'bar': b'val2'}"),
b'\x13\x00\x00\x01\x00\x01\x00\x10\xa2' b'CbarDval2CfooDval1',
)
class FrameTests(unittest.TestCase):
def testdataexactframesize(self):
data = util.bytesio(b'x' * framing.DEFAULT_MAX_FRAME_SIZE)
stream = framing.stream(1)
frames = list(
framing.createcommandframes(stream, 1, b'command', {}, data)
)
self.assertEqual(
frames,
[
ffs(
b'1 1 stream-begin command-request new|have-data '
b"cbor:{b'name': b'command'}"
),
ffs(b'1 1 0 command-data continuation %s' % data.getvalue()),
ffs(b'1 1 0 command-data eos '),
],
)
def testdatamultipleframes(self):
data = util.bytesio(b'x' * (framing.DEFAULT_MAX_FRAME_SIZE + 1))
stream = framing.stream(1)
frames = list(
framing.createcommandframes(stream, 1, b'command', {}, data)
)
self.assertEqual(
frames,
[
ffs(
b'1 1 stream-begin command-request new|have-data '
b"cbor:{b'name': b'command'}"
),
ffs(
b'1 1 0 command-data continuation %s'
% (b'x' * framing.DEFAULT_MAX_FRAME_SIZE)
),
ffs(b'1 1 0 command-data eos x'),
],
)
def testargsanddata(self):
data = util.bytesio(b'x' * 100)
stream = framing.stream(1)
frames = list(
framing.createcommandframes(
stream,
1,
b'command',
{
b'key1': b'key1value',
b'key2': b'key2value',
b'key3': b'key3value',
},
data,
)
)
self.assertEqual(
frames,
[
ffs(
b'1 1 stream-begin command-request new|have-data '
b"cbor:{b'name': b'command', b'args': {b'key1': b'key1value', "
b"b'key2': b'key2value', b'key3': b'key3value'}}"
),
ffs(b'1 1 0 command-data eos %s' % data.getvalue()),
],
)
if not getattr(unittest.TestCase, 'assertRaisesRegex', False):
# Python 3.7 deprecates the regex*p* version, but 2.7 lacks
# the regex version.
assertRaisesRegex = ( # camelcase-required
unittest.TestCase.assertRaisesRegexp
)
def testtextoutputformattingstringtype(self):
"""Formatting string must be bytes."""
with self.assertRaisesRegex(ValueError, 'must use bytes formatting '):
list(
framing.createtextoutputframe(
None, 1, [(b'foo'.decode('ascii'), [], [])]
)
)
def testtextoutputargumentbytes(self):
with self.assertRaisesRegex(ValueError, 'must use bytes for argument'):
list(
framing.createtextoutputframe(
None, 1, [(b'foo', [b'foo'.decode('ascii')], [])]
)
)
def testtextoutputlabelbytes(self):
with self.assertRaisesRegex(ValueError, 'must use bytes for labels'):
list(
framing.createtextoutputframe(
None, 1, [(b'foo', [], [b'foo'.decode('ascii')])]
)
)
def testtextoutput1simpleatom(self):
stream = framing.stream(1)
val = list(framing.createtextoutputframe(stream, 1, [(b'foo', [], [])]))
self.assertEqual(
val,
[
ffs(
b'1 1 stream-begin text-output 0 '
b"cbor:[{b'msg': b'foo'}]"
),
],
)
def testtextoutput2simpleatoms(self):
stream = framing.stream(1)
val = list(
framing.createtextoutputframe(
stream,
1,
[
(b'foo', [], []),
(b'bar', [], []),
],
)
)
self.assertEqual(
val,
[
ffs(
b'1 1 stream-begin text-output 0 '
b"cbor:[{b'msg': b'foo'}, {b'msg': b'bar'}]"
)
],
)
def testtextoutput1arg(self):
stream = framing.stream(1)
val = list(
framing.createtextoutputframe(
stream,
1,
[
(b'foo %s', [b'val1'], []),
],
)
)
self.assertEqual(
val,
[
ffs(
b'1 1 stream-begin text-output 0 '
b"cbor:[{b'msg': b'foo %s', b'args': [b'val1']}]"
)
],
)
def testtextoutput2arg(self):
stream = framing.stream(1)
val = list(
framing.createtextoutputframe(
stream,
1,
[
(b'foo %s %s', [b'val', b'value'], []),
],
)
)
self.assertEqual(
val,
[
ffs(
b'1 1 stream-begin text-output 0 '
b"cbor:[{b'msg': b'foo %s %s', b'args': [b'val', b'value']}]"
)
],
)
def testtextoutput1label(self):
stream = framing.stream(1)
val = list(
framing.createtextoutputframe(
stream,
1,
[
(b'foo', [], [b'label']),
],
)
)
self.assertEqual(
val,
[
ffs(
b'1 1 stream-begin text-output 0 '
b"cbor:[{b'msg': b'foo', b'labels': [b'label']}]"
)
],
)
def testargandlabel(self):
stream = framing.stream(1)
val = list(
framing.createtextoutputframe(
stream,
1,
[
(b'foo %s', [b'arg'], [b'label']),
],
)
)
self.assertEqual(
val,
[
ffs(
b'1 1 stream-begin text-output 0 '
b"cbor:[{b'msg': b'foo %s', b'args': [b'arg'], "
b"b'labels': [b'label']}]"
)
],
)
if __name__ == '__main__':
import silenttestrunner
silenttestrunner.main(__name__)