hg: recognize include and exclude patterns when cloning
This commit teaches clone() to accept arguments defining file
patterns to clone. This is the first step in teaching core code
about the existence of a narrow clone.
Right now, we only perform validation of the arguments and pass
additional options into createopts to influence repository
creation. Nothing of consequence happens with that creation option
yet, however.
For now, arbitrary restrictions exist, such as not allowing patterns
for shared repos and disabling local copies when patterns are
defined. We can potentially lift these restrictions in the future
once partial clone/storage support is more flushed out. I figure
it is best to reduce the surface area for bugs for the time being.
It may seem weird to prefix these arguments with "store." However,
clone is effectively pull + update and file patterns could apply to
both the store and the working directory. The prefix is there to
disambiguate in the future when this function may want to use
different sets of patterns for the store and working directory.
Differential Revision: https://phab.mercurial-scm.org/D4536
"""This unit test primarily tests parsers.parse_index2().
It also checks certain aspects of the parsers module as a whole.
"""
from __future__ import absolute_import, print_function
import struct
import subprocess
import sys
import unittest
from mercurial.node import (
nullid,
nullrev,
)
from mercurial import (
node as nodemod,
policy,
pycompat,
)
parsers = policy.importmod(r'parsers')
# original python implementation
def gettype(q):
return int(q & 0xFFFF)
def offset_type(offset, type):
return int(int(offset) << 16 | type)
indexformatng = ">Qiiiiii20s12x"
def py_parseindex(data, inline) :
s = 64
cache = None
index = []
nodemap = {nullid: nullrev}
n = off = 0
l = len(data) - s
append = index.append
if inline:
cache = (0, data)
while off <= l:
e = struct.unpack(indexformatng, data[off:off + s])
nodemap[e[7]] = n
append(e)
n += 1
if e[1] < 0:
break
off += e[1] + s
else:
while off <= l:
e = struct.unpack(indexformatng, data[off:off + s])
nodemap[e[7]] = n
append(e)
n += 1
off += s
e = list(index[0])
type = gettype(e[0])
e[0] = offset_type(0, type)
index[0] = tuple(e)
return index, cache
data_inlined = (
b'\x00\x01\x00\x01\x00\x00\x00\x00\x00\x00\x01\x8c'
b'\x00\x00\x04\x07\x00\x00\x00\x00\x00\x00\x15\x15\xff\xff\xff'
b'\xff\xff\xff\xff\xff\xebG\x97\xb7\x1fB\x04\xcf\x13V\x81\tw\x1b'
b'w\xdduR\xda\xc6\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
b'x\x9c\x9d\x93?O\xc30\x10\xc5\xf7|\x8a\xdb\x9a\xa8m\x06\xd8*\x95'
b'\x81B\xa1\xa2\xa2R\xcb\x86Pd\x9a\x0b5$vd_\x04\xfd\xf6\x9c\xff@'
b'\x11!\x0b\xd9\xec\xf7\xbbw\xe7gG6\xad6\x04\xdaN\xc0\x92\xa0$)'
b'\xb1\x82\xa2\xd1%\x16\xa4\x8b7\xa9\xca\xd4-\xb2Y\x02\xfc\xc9'
b'\xcaS\xf9\xaeX\xed\xb6\xd77Q\x02\x83\xd4\x19\xf5--Y\xea\xe1W'
b'\xab\xed\x10\xceR\x0f_\xdf\xdf\r\xe1,\xf5\xf0\xcb\xf5 \xceR\x0f'
b'_\xdc\x0e\x0e\xc3R\x0f_\xae\x96\x9b!\x9e\xa5\x1e\xbf\xdb,\x06'
b'\xc7q\x9a/\x88\x82\xc3B\xea\xb5\xb4TJ\x93\xb6\x82\x0e\xe16\xe6'
b'KQ\xdb\xaf\xecG\xa3\xd1 \x01\xd3\x0b_^\xe8\xaa\xa0\xae\xad\xd1'
b'&\xbef\x1bz\x08\xb0|\xc9Xz\x06\xf6Z\x91\x90J\xaa\x17\x90\xaa'
b'\xd2\xa6\x11$5C\xcf\xba#\xa0\x03\x02*2\x92-\xfc\xb1\x94\xdf\xe2'
b'\xae\xb8\'m\x8ey0^\x85\xd3\x82\xb4\xf0`:\x9c\x00\x8a\xfd\x01'
b'\xb0\xc6\x86\x8b\xdd\xae\x80\xf3\xa9\x9fd\x16\n\x00R%\x1a\x06'
b'\xe9\xd8b\x98\x1d\xf4\xf3+\x9bf\x01\xd8p\x1b\xf3.\xed\x9f^g\xc3'
b'^\xd9W81T\xdb\xd5\x04sx|\xf2\xeb\xd6`%?x\xed"\x831\xbf\xf3\xdc'
b'b\xeb%gaY\xe1\xad\x9f\xb9f\'1w\xa9\xa5a\x83s\x82J\xb98\xbc4\x8b'
b'\x83\x00\x9f$z\xb8#\xa5\xb1\xdf\x98\xd9\xec\x1b\x89O\xe3Ts\x9a4'
b'\x17m\x8b\xfc\x8f\xa5\x95\x9a\xfc\xfa\xed,\xe5|\xa1\xfe\x15\xb9'
b'\xbc\xb2\x93\x1f\xf2\x95\xff\xdf,\x1a\xc5\xe7\x17*\x93Oz:>\x0e'
)
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'
)
def parse_index2(data, inline):
index, chunkcache = parsers.parse_index2(data, inline)
return list(index), chunkcache
def importparsers(hexversion):
"""Import mercurial.parsers with the given sys.hexversion."""
# The file parsers.c inspects sys.hexversion to determine the version
# of the currently-running Python interpreter, so we monkey-patch
# sys.hexversion to simulate using different versions.
code = ("import sys; sys.hexversion=%s; "
"import mercurial.cext.parsers" % hexversion)
cmd = "python -c \"%s\"" % code
# We need to do these tests inside a subprocess because parser.c's
# version-checking code happens inside the module init function, and
# when using reload() to reimport an extension module, "The init function
# of extension modules is not called a second time"
# (from http://docs.python.org/2/library/functions.html?#reload).
p = subprocess.Popen(cmd, shell=True,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
return p.communicate() # returns stdout, stderr
def hexfailmsg(testnumber, hexversion, stdout, expected):
try:
hexstring = hex(hexversion)
except TypeError:
hexstring = None
return ("FAILED: version test #%s with Python %s and patched "
"sys.hexversion %r (%r):\n Expected %s but got:\n-->'%s'\n" %
(testnumber, sys.version_info, hexversion, hexstring, expected,
stdout))
def makehex(major, minor, micro):
return int("%x%02x%02x00" % (major, minor, micro), 16)
class parseindex2tests(unittest.TestCase):
def assertversionokay(self, testnumber, hexversion):
stdout, stderr = importparsers(hexversion)
self.assertFalse(
stdout, hexfailmsg(testnumber, hexversion, stdout, 'no stdout'))
def assertversionfail(self, testnumber, hexversion):
stdout, stderr = importparsers(hexversion)
# We include versionerrortext to distinguish from other ImportErrors.
errtext = b"ImportError: %s" % pycompat.sysbytes(
parsers.versionerrortext)
self.assertIn(errtext, stdout,
hexfailmsg(testnumber, hexversion, stdout,
expected="stdout to contain %r" % errtext))
def testversiondetection(self):
"""Check the version-detection logic when importing parsers."""
# Only test the version-detection logic if it is present.
try:
parsers.versionerrortext
except AttributeError:
return
info = sys.version_info
major, minor, micro = info[0], info[1], info[2]
# Test same major-minor versions.
self.assertversionokay(1, makehex(major, minor, micro))
self.assertversionokay(2, makehex(major, minor, micro + 1))
# Test different major-minor versions.
self.assertversionfail(3, makehex(major + 1, minor, micro))
self.assertversionfail(4, makehex(major, minor + 1, micro))
self.assertversionfail(5, "'foo'")
def testbadargs(self):
# Check that parse_index2() raises TypeError on bad arguments.
with self.assertRaises(TypeError):
parse_index2(0, True)
def testparseindexfile(self):
# Check parsers.parse_index2() on an index file against the
# original Python implementation of parseindex, both with and
# without inlined data.
want = py_parseindex(data_inlined, True)
got = parse_index2(data_inlined, True)
self.assertEqual(want, got) # inline data
want = py_parseindex(data_non_inlined, False)
got = parse_index2(data_non_inlined, False)
self.assertEqual(want, got) # no inline data
ix = parsers.parse_index2(data_inlined, True)[0]
for i, r in enumerate(ix):
if r[7] == nullid:
i = -1
try:
self.assertEqual(
ix[r[7]], i,
'Reverse lookup inconsistent for %r' % nodemod.hex(r[7]))
except TypeError:
# pure version doesn't support this
break
def testminusone(self):
want = (0, 0, 0, -1, -1, -1, -1, nullid)
index, junk = parsers.parse_index2(data_inlined, True)
got = index[-1]
self.assertEqual(want, got) # inline data
index, junk = parsers.parse_index2(data_non_inlined, False)
got = index[-1]
self.assertEqual(want, got) # no inline data
if __name__ == '__main__':
import silenttestrunner
silenttestrunner.main(__name__)