Mercurial > hg
view tests/test-lock.py @ 51626:865efc020c33 default tip
dirstate: remove the python-side whitelist of allowed matchers
This whitelist is too permissive because it allows matchers that contain
disallowed ones deep inside, for example through `intersectionmatcher`.
It is also too restrictive because it doesn't pass through
some of the matchers we support, such as `patternmatcher`.
It's also unnecessary because unsupported matchers raise
`FallbackError` and we fall back anyway.
Making this change makes more of the tests use rust code path,
and therefore subtly change behavior. For example, rust status
in largefiles repos seems to have strange behavior.
author | Arseniy Alekseyev <aalekseyev@janestreet.com> |
---|---|
date | Fri, 26 Apr 2024 19:10:35 +0100 |
parents | 642e31cb55f0 |
children |
line wrap: on
line source
import copy import errno import tempfile import types import unittest import silenttestrunner from mercurial import ( encoding, error, lock, vfs as vfsmod, ) testlockname = b'testlock' # work around http://bugs.python.org/issue1515 if types.MethodType not in copy._deepcopy_dispatch: def _deepcopy_method(x, memo): return type(x)(x.__func__, copy.deepcopy(x.__self__, memo), x.im_class) copy._deepcopy_dispatch[types.MethodType] = _deepcopy_method class lockwrapper(lock.lock): def __init__(self, pidoffset, *args, **kwargs): # lock.lock.__init__() calls lock(), so the pidoffset assignment needs # to be earlier self._pidoffset = pidoffset super(lockwrapper, self).__init__(*args, **kwargs) def _getpid(self): return super(lockwrapper, self)._getpid() + self._pidoffset class teststate: def __init__(self, testcase, dir, pidoffset=0): self._testcase = testcase self._acquirecalled = False self._releasecalled = False self._postreleasecalled = False self.vfs = vfsmod.vfs(dir, audit=False) self._pidoffset = pidoffset def makelock(self, *args, **kwargs): l = lockwrapper( self._pidoffset, self.vfs, testlockname, releasefn=self.releasefn, acquirefn=self.acquirefn, *args, **kwargs ) l.postrelease.append(self.postreleasefn) return l def acquirefn(self): self._acquirecalled = True def releasefn(self): self._releasecalled = True def postreleasefn(self, success): self._postreleasecalled = True def assertacquirecalled(self, called): self._testcase.assertEqual( self._acquirecalled, called, 'expected acquire to be %s but was actually %s' % ( self._tocalled(called), self._tocalled(self._acquirecalled), ), ) def resetacquirefn(self): self._acquirecalled = False def assertreleasecalled(self, called): self._testcase.assertEqual( self._releasecalled, called, 'expected release to be %s but was actually %s' % ( self._tocalled(called), self._tocalled(self._releasecalled), ), ) def assertpostreleasecalled(self, called): self._testcase.assertEqual( self._postreleasecalled, called, 'expected postrelease to be %s but was actually %s' % ( self._tocalled(called), self._tocalled(self._postreleasecalled), ), ) def assertlockexists(self, exists): actual = self.vfs.lexists(testlockname) self._testcase.assertEqual( actual, exists, 'expected lock to %s but actually did %s' % ( self._toexists(exists), self._toexists(actual), ), ) def _tocalled(self, called): if called: return 'called' else: return 'not called' def _toexists(self, exists): if exists: return 'exist' else: return 'not exist' class testlock(unittest.TestCase): def testlock(self): state = teststate(self, tempfile.mkdtemp(dir=encoding.getcwd())) lock = state.makelock() state.assertacquirecalled(True) lock.release() state.assertreleasecalled(True) state.assertpostreleasecalled(True) state.assertlockexists(False) def testrecursivelock(self): state = teststate(self, tempfile.mkdtemp(dir=encoding.getcwd())) lock = state.makelock() state.assertacquirecalled(True) state.resetacquirefn() lock.lock() # recursive lock should not call acquirefn again state.assertacquirecalled(False) lock.release() # brings lock refcount down from 2 to 1 state.assertreleasecalled(False) state.assertpostreleasecalled(False) state.assertlockexists(True) lock.release() # releases the lock state.assertreleasecalled(True) state.assertpostreleasecalled(True) state.assertlockexists(False) def testlockfork(self): state = teststate(self, tempfile.mkdtemp(dir=encoding.getcwd())) lock = state.makelock() state.assertacquirecalled(True) # fake a fork forklock = copy.copy(lock) forklock._pidoffset = 1 forklock.release() state.assertreleasecalled(False) state.assertpostreleasecalled(False) state.assertlockexists(True) # release the actual lock lock.release() state.assertreleasecalled(True) state.assertpostreleasecalled(True) state.assertlockexists(False) def testfrequentlockunlock(self): """This tests whether lock acquisition fails as expected, even if (1) lock can't be acquired (makelock fails by EEXIST), and (2) locker info can't be read in (readlock fails by ENOENT) while retrying 5 times. """ d = tempfile.mkdtemp(dir=encoding.getcwd()) state = teststate(self, d) def emulatefrequentlock(*args): raise OSError(errno.EEXIST, "File exists") def emulatefrequentunlock(*args): raise OSError(errno.ENOENT, "No such file or directory") state.vfs.makelock = emulatefrequentlock state.vfs.readlock = emulatefrequentunlock try: state.makelock(timeout=0) self.fail("unexpected lock acquisition") except error.LockHeld as why: self.assertTrue(why.errno == errno.ETIMEDOUT) self.assertTrue(why.locker == b"") state.assertlockexists(False) if __name__ == '__main__': silenttestrunner.main(__name__)