chgserver: change random state after fork
Before this patch, extensions expecting a different random state per command
will break since the chg request handler will inherit a same random state
from the parent daemon process.
This patch addresses the issue by calling random.seed() after fork.
import binascii
import unittest
import itertools
import silenttestrunner
from mercurial import manifest as manifestmod
from mercurial import match as matchmod
EMTPY_MANIFEST = ''
EMTPY_MANIFEST_V2 = '\0\n'
HASH_1 = '1' * 40
BIN_HASH_1 = binascii.unhexlify(HASH_1)
HASH_2 = 'f' * 40
BIN_HASH_2 = binascii.unhexlify(HASH_2)
HASH_3 = '1234567890abcdef0987654321deadbeef0fcafe'
BIN_HASH_3 = binascii.unhexlify(HASH_3)
A_SHORT_MANIFEST = (
'bar/baz/qux.py\0%(hash2)s%(flag2)s\n'
'foo\0%(hash1)s%(flag1)s\n'
) % {'hash1': HASH_1,
'flag1': '',
'hash2': HASH_2,
'flag2': 'l',
}
# Same data as A_SHORT_MANIFEST
A_SHORT_MANIFEST_V2 = (
'\0\n'
'\x00bar/baz/qux.py\0%(flag2)s\n%(hash2)s\n'
'\x00foo\0%(flag1)s\n%(hash1)s\n'
) % {'hash1': BIN_HASH_1,
'flag1': '',
'hash2': BIN_HASH_2,
'flag2': 'l',
}
# Same data as A_SHORT_MANIFEST
A_METADATA_MANIFEST = (
'\0foo\0bar\n'
'\x00bar/baz/qux.py\0%(flag2)s\0foo\0bar\n%(hash2)s\n' # flag and metadata
'\x00foo\0%(flag1)s\0foo\n%(hash1)s\n' # no flag, but metadata
) % {'hash1': BIN_HASH_1,
'flag1': '',
'hash2': BIN_HASH_2,
'flag2': 'l',
}
A_STEM_COMPRESSED_MANIFEST = (
'\0\n'
'\x00bar/baz/qux.py\0%(flag2)s\n%(hash2)s\n'
'\x04qux/foo.py\0%(flag1)s\n%(hash1)s\n' # simple case of 4 stem chars
'\x0az.py\0%(flag1)s\n%(hash1)s\n' # tricky newline = 10 stem characters
'\x00%(verylongdir)sx/x\0\n%(hash1)s\n'
'\xffx/y\0\n%(hash2)s\n' # more than 255 stem chars
) % {'hash1': BIN_HASH_1,
'flag1': '',
'hash2': BIN_HASH_2,
'flag2': 'l',
'verylongdir': 255 * 'x',
}
A_DEEPER_MANIFEST = (
'a/b/c/bar.py\0%(hash3)s%(flag1)s\n'
'a/b/c/bar.txt\0%(hash1)s%(flag1)s\n'
'a/b/c/foo.py\0%(hash3)s%(flag1)s\n'
'a/b/c/foo.txt\0%(hash2)s%(flag2)s\n'
'a/b/d/baz.py\0%(hash3)s%(flag1)s\n'
'a/b/d/qux.py\0%(hash1)s%(flag2)s\n'
'a/b/d/ten.txt\0%(hash3)s%(flag2)s\n'
'a/b/dog.py\0%(hash3)s%(flag1)s\n'
'a/b/fish.py\0%(hash2)s%(flag1)s\n'
'a/c/london.py\0%(hash3)s%(flag2)s\n'
'a/c/paper.txt\0%(hash2)s%(flag2)s\n'
'a/c/paris.py\0%(hash2)s%(flag1)s\n'
'a/d/apple.py\0%(hash3)s%(flag1)s\n'
'a/d/pizza.py\0%(hash3)s%(flag2)s\n'
'a/green.py\0%(hash1)s%(flag2)s\n'
'a/purple.py\0%(hash2)s%(flag1)s\n'
'app.py\0%(hash3)s%(flag1)s\n'
'readme.txt\0%(hash2)s%(flag1)s\n'
) % {'hash1': HASH_1,
'flag1': '',
'hash2': HASH_2,
'flag2': 'l',
'hash3': HASH_3,
}
HUGE_MANIFEST_ENTRIES = 200001
A_HUGE_MANIFEST = ''.join(sorted(
'file%d\0%s%s\n' % (i, h, f) for i, h, f in
itertools.izip(xrange(200001),
itertools.cycle((HASH_1, HASH_2)),
itertools.cycle(('', 'x', 'l')))))
class basemanifesttests(object):
def parsemanifest(self, text):
raise NotImplementedError('parsemanifest not implemented by test case')
def assertIn(self, thing, container, msg=None):
# assertIn new in 2.7, use it if available, otherwise polyfill
sup = getattr(unittest.TestCase, 'assertIn', False)
if sup:
return sup(self, thing, container, msg=msg)
if not msg:
msg = 'Expected %r in %r' % (thing, container)
self.assert_(thing in container, msg)
def testEmptyManifest(self):
m = self.parsemanifest(EMTPY_MANIFEST)
self.assertEqual(0, len(m))
self.assertEqual([], list(m))
def testEmptyManifestv2(self):
m = self.parsemanifest(EMTPY_MANIFEST_V2)
self.assertEqual(0, len(m))
self.assertEqual([], list(m))
def testManifest(self):
m = self.parsemanifest(A_SHORT_MANIFEST)
self.assertEqual(['bar/baz/qux.py', 'foo'], list(m))
self.assertEqual(BIN_HASH_2, m['bar/baz/qux.py'])
self.assertEqual('l', m.flags('bar/baz/qux.py'))
self.assertEqual(BIN_HASH_1, m['foo'])
self.assertEqual('', m.flags('foo'))
self.assertRaises(KeyError, lambda : m['wat'])
def testParseManifestV2(self):
m1 = self.parsemanifest(A_SHORT_MANIFEST)
m2 = self.parsemanifest(A_SHORT_MANIFEST_V2)
# Should have same content as A_SHORT_MANIFEST
self.assertEqual(m1.text(), m2.text())
def testParseManifestMetadata(self):
# Metadata is for future-proofing and should be accepted but ignored
m = self.parsemanifest(A_METADATA_MANIFEST)
self.assertEqual(A_SHORT_MANIFEST, m.text())
def testParseManifestStemCompression(self):
m = self.parsemanifest(A_STEM_COMPRESSED_MANIFEST)
self.assertIn('bar/baz/qux.py', m)
self.assertIn('bar/qux/foo.py', m)
self.assertIn('bar/qux/foz.py', m)
self.assertIn(256 * 'x' + '/x', m)
self.assertIn(256 * 'x' + '/y', m)
self.assertEqual(A_STEM_COMPRESSED_MANIFEST, m.text(usemanifestv2=True))
def testTextV2(self):
m1 = self.parsemanifest(A_SHORT_MANIFEST)
v2text = m1.text(usemanifestv2=True)
self.assertEqual(A_SHORT_MANIFEST_V2, v2text)
def testSetItem(self):
want = BIN_HASH_1
m = self.parsemanifest(EMTPY_MANIFEST)
m['a'] = want
self.assertIn('a', m)
self.assertEqual(want, m['a'])
self.assertEqual('a\0' + HASH_1 + '\n', m.text())
m = self.parsemanifest(A_SHORT_MANIFEST)
m['a'] = want
self.assertEqual(want, m['a'])
self.assertEqual('a\0' + HASH_1 + '\n' + A_SHORT_MANIFEST,
m.text())
def testSetFlag(self):
want = 'x'
m = self.parsemanifest(EMTPY_MANIFEST)
# first add a file; a file-less flag makes no sense
m['a'] = BIN_HASH_1
m.setflag('a', want)
self.assertEqual(want, m.flags('a'))
self.assertEqual('a\0' + HASH_1 + want + '\n', m.text())
m = self.parsemanifest(A_SHORT_MANIFEST)
# first add a file; a file-less flag makes no sense
m['a'] = BIN_HASH_1
m.setflag('a', want)
self.assertEqual(want, m.flags('a'))
self.assertEqual('a\0' + HASH_1 + want + '\n' + A_SHORT_MANIFEST,
m.text())
def testCopy(self):
m = self.parsemanifest(A_SHORT_MANIFEST)
m['a'] = BIN_HASH_1
m2 = m.copy()
del m
del m2 # make sure we don't double free() anything
def testCompaction(self):
unhex = binascii.unhexlify
h1, h2 = unhex(HASH_1), unhex(HASH_2)
m = self.parsemanifest(A_SHORT_MANIFEST)
m['alpha'] = h1
m['beta'] = h2
del m['foo']
want = 'alpha\0%s\nbar/baz/qux.py\0%sl\nbeta\0%s\n' % (
HASH_1, HASH_2, HASH_2)
self.assertEqual(want, m.text())
self.assertEqual(3, len(m))
self.assertEqual(['alpha', 'bar/baz/qux.py', 'beta'], list(m))
self.assertEqual(h1, m['alpha'])
self.assertEqual(h2, m['bar/baz/qux.py'])
self.assertEqual(h2, m['beta'])
self.assertEqual('', m.flags('alpha'))
self.assertEqual('l', m.flags('bar/baz/qux.py'))
self.assertEqual('', m.flags('beta'))
self.assertRaises(KeyError, lambda : m['foo'])
def testSetGetNodeSuffix(self):
clean = self.parsemanifest(A_SHORT_MANIFEST)
m = self.parsemanifest(A_SHORT_MANIFEST)
h = m['foo']
f = m.flags('foo')
want = h + 'a'
# Merge code wants to set 21-byte fake hashes at times
m['foo'] = want
self.assertEqual(want, m['foo'])
self.assertEqual([('bar/baz/qux.py', BIN_HASH_2),
('foo', BIN_HASH_1 + 'a')],
list(m.iteritems()))
# Sometimes it even tries a 22-byte fake hash, but we can
# return 21 and it'll work out
m['foo'] = want + '+'
self.assertEqual(want, m['foo'])
# make sure the suffix survives a copy
match = matchmod.match('', '', ['re:foo'])
m2 = m.matches(match)
self.assertEqual(want, m2['foo'])
self.assertEqual(1, len(m2))
m2 = m.copy()
self.assertEqual(want, m2['foo'])
# suffix with iteration
self.assertEqual([('bar/baz/qux.py', BIN_HASH_2),
('foo', want)],
list(m.iteritems()))
# shows up in diff
self.assertEqual({'foo': ((want, f), (h, ''))}, m.diff(clean))
self.assertEqual({'foo': ((h, ''), (want, f))}, clean.diff(m))
def testMatchException(self):
m = self.parsemanifest(A_SHORT_MANIFEST)
match = matchmod.match('', '', ['re:.*'])
def filt(path):
if path == 'foo':
assert False
return True
match.matchfn = filt
self.assertRaises(AssertionError, m.matches, match)
def testRemoveItem(self):
m = self.parsemanifest(A_SHORT_MANIFEST)
del m['foo']
self.assertRaises(KeyError, lambda : m['foo'])
self.assertEqual(1, len(m))
self.assertEqual(1, len(list(m)))
# now restore and make sure everything works right
m['foo'] = 'a' * 20
self.assertEqual(2, len(m))
self.assertEqual(2, len(list(m)))
def testManifestDiff(self):
MISSING = (None, '')
addl = 'z-only-in-left\0' + HASH_1 + '\n'
addr = 'z-only-in-right\0' + HASH_2 + 'x\n'
left = self.parsemanifest(
A_SHORT_MANIFEST.replace(HASH_1, HASH_3 + 'x') + addl)
right = self.parsemanifest(A_SHORT_MANIFEST + addr)
want = {
'foo': ((BIN_HASH_3, 'x'),
(BIN_HASH_1, '')),
'z-only-in-left': ((BIN_HASH_1, ''), MISSING),
'z-only-in-right': (MISSING, (BIN_HASH_2, 'x')),
}
self.assertEqual(want, left.diff(right))
want = {
'bar/baz/qux.py': (MISSING, (BIN_HASH_2, 'l')),
'foo': (MISSING, (BIN_HASH_3, 'x')),
'z-only-in-left': (MISSING, (BIN_HASH_1, '')),
}
self.assertEqual(want, self.parsemanifest(EMTPY_MANIFEST).diff(left))
want = {
'bar/baz/qux.py': ((BIN_HASH_2, 'l'), MISSING),
'foo': ((BIN_HASH_3, 'x'), MISSING),
'z-only-in-left': ((BIN_HASH_1, ''), MISSING),
}
self.assertEqual(want, left.diff(self.parsemanifest(EMTPY_MANIFEST)))
copy = right.copy()
del copy['z-only-in-right']
del right['foo']
want = {
'foo': (MISSING, (BIN_HASH_1, '')),
'z-only-in-right': ((BIN_HASH_2, 'x'), MISSING),
}
self.assertEqual(want, right.diff(copy))
short = self.parsemanifest(A_SHORT_MANIFEST)
pruned = short.copy()
del pruned['foo']
want = {
'foo': ((BIN_HASH_1, ''), MISSING),
}
self.assertEqual(want, short.diff(pruned))
want = {
'foo': (MISSING, (BIN_HASH_1, '')),
}
self.assertEqual(want, pruned.diff(short))
want = {
'bar/baz/qux.py': None,
'foo': (MISSING, (BIN_HASH_1, '')),
}
self.assertEqual(want, pruned.diff(short, True))
def testReversedLines(self):
backwards = ''.join(
l + '\n' for l in reversed(A_SHORT_MANIFEST.split('\n')) if l)
try:
self.parsemanifest(backwards)
self.fail('Should have raised ValueError')
except ValueError as v:
self.assertIn('Manifest lines not in sorted order.', str(v))
def testNoTerminalNewline(self):
try:
self.parsemanifest(A_SHORT_MANIFEST + 'wat')
self.fail('Should have raised ValueError')
except ValueError as v:
self.assertIn('Manifest did not end in a newline.', str(v))
def testNoNewLineAtAll(self):
try:
self.parsemanifest('wat')
self.fail('Should have raised ValueError')
except ValueError as v:
self.assertIn('Manifest did not end in a newline.', str(v))
def testHugeManifest(self):
m = self.parsemanifest(A_HUGE_MANIFEST)
self.assertEqual(HUGE_MANIFEST_ENTRIES, len(m))
self.assertEqual(len(m), len(list(m)))
def testMatchesMetadata(self):
'''Tests matches() for a few specific files to make sure that both
the set of files as well as their flags and nodeids are correct in
the resulting manifest.'''
m = self.parsemanifest(A_HUGE_MANIFEST)
match = matchmod.match('/', '',
['file1', 'file200', 'file300'], exact=True)
m2 = m.matches(match)
w = ('file1\0%sx\n'
'file200\0%sl\n'
'file300\0%s\n') % (HASH_2, HASH_1, HASH_1)
self.assertEqual(w, m2.text())
def testMatchesNonexistentFile(self):
'''Tests matches() for a small set of specific files, including one
nonexistent file to make sure in only matches against existing files.
'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match('/', '',
['a/b/c/bar.txt', 'a/b/d/qux.py', 'readme.txt', 'nonexistent'],
exact=True)
m2 = m.matches(match)
self.assertEqual(
['a/b/c/bar.txt', 'a/b/d/qux.py', 'readme.txt'],
m2.keys())
def testMatchesNonexistentDirectory(self):
'''Tests matches() for a relpath match on a directory that doesn't
actually exist.'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match('/', '', ['a/f'], default='relpath')
m2 = m.matches(match)
self.assertEqual([], m2.keys())
def testMatchesExactLarge(self):
'''Tests matches() for files matching a large list of exact files.
'''
m = self.parsemanifest(A_HUGE_MANIFEST)
flist = m.keys()[80:300]
match = matchmod.match('/', '', flist, exact=True)
m2 = m.matches(match)
self.assertEqual(flist, m2.keys())
def testMatchesFull(self):
'''Tests matches() for what should be a full match.'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match('/', '', [''])
m2 = m.matches(match)
self.assertEqual(m.keys(), m2.keys())
def testMatchesDirectory(self):
'''Tests matches() on a relpath match on a directory, which should
match against all files within said directory.'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match('/', '', ['a/b'], default='relpath')
m2 = m.matches(match)
self.assertEqual([
'a/b/c/bar.py', 'a/b/c/bar.txt', 'a/b/c/foo.py', 'a/b/c/foo.txt',
'a/b/d/baz.py', 'a/b/d/qux.py', 'a/b/d/ten.txt', 'a/b/dog.py',
'a/b/fish.py'], m2.keys())
def testMatchesExactPath(self):
'''Tests matches() on an exact match on a directory, which should
result in an empty manifest because you can't perform an exact match
against a directory.'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match('/', '', ['a/b'], exact=True)
m2 = m.matches(match)
self.assertEqual([], m2.keys())
def testMatchesCwd(self):
'''Tests matches() on a relpath match with the current directory ('.')
when not in the root directory.'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match('/', 'a/b', ['.'], default='relpath')
m2 = m.matches(match)
self.assertEqual([
'a/b/c/bar.py', 'a/b/c/bar.txt', 'a/b/c/foo.py', 'a/b/c/foo.txt',
'a/b/d/baz.py', 'a/b/d/qux.py', 'a/b/d/ten.txt', 'a/b/dog.py',
'a/b/fish.py'], m2.keys())
def testMatchesWithPattern(self):
'''Tests matches() for files matching a pattern that reside
deeper than the specified directory.'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match('/', '', ['a/b/*/*.txt'])
m2 = m.matches(match)
self.assertEqual(
['a/b/c/bar.txt', 'a/b/c/foo.txt', 'a/b/d/ten.txt'],
m2.keys())
class testmanifestdict(unittest.TestCase, basemanifesttests):
def parsemanifest(self, text):
return manifestmod.manifestdict(text)
class testtreemanifest(unittest.TestCase, basemanifesttests):
def parsemanifest(self, text):
return manifestmod.treemanifest('', text)
if __name__ == '__main__':
silenttestrunner.main(__name__)