mirror of
https://github.com/facebook/sapling.git
synced 2024-10-08 15:57:43 +03:00
98d9269874
Summary: Create a fork of the Mercurial code that we can use to build server rpms. The hg servers will continue to exist for a few more months while we move the darkstorm and ediscovery use cases off them. In the mean time, we want to start making breaking changes to the client, so let's create a stable copy of the hg code to produce rpms for the hg servers. The fork is based off c7770c78d, the latest hg release. This copies the files as is, then adds some minor tweaks to get it to build: - Disables some lint checks that appear to be bypassed by path - sed replace eden/scm with eden/hg-server - Removed a dependency on scm/telemetry from the edenfs-client tests since scm/telemetry pulls in the original eden/scm/lib/configparser which conflicts with the hg-server conflict parser. allow-large-files Reviewed By: quark-zju Differential Revision: D27632557 fbshipit-source-id: b2f442f4ec000ea08e4d62de068750832198e1f4
136 lines
4.3 KiB
Python
136 lines
4.3 KiB
Python
from __future__ import absolute_import
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import glob
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import os
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import shutil
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import tempfile
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import unittest
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from edenscm.mercurial import util
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from hghave import require
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atomictempfile = util.atomictempfile
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# force dealing with tmp filenames that go
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# over the maximum file length
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filename = "A" * 253
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try:
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xrange(0)
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except NameError:
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xrange = range
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class testatomictempfile(unittest.TestCase):
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def setUp(self):
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self._testdir = tempfile.mkdtemp("atomictempfiletest")
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self._filename = os.path.join(self._testdir, filename)
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def tearDown(self):
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shutil.rmtree(self._testdir, True)
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def testsimple(self):
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file = atomictempfile(self._filename)
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self.assertFalse(os.path.isfile(self._filename))
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tempfilename = file._tempname
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self.assertTrue(tempfilename in glob.glob(os.path.join(self._testdir, ".*")))
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file.write(b"argh\n")
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file.close()
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self.assertTrue(os.path.isfile(self._filename))
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self.assertTrue(
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tempfilename
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not in glob.glob(os.path.join(self._testdir, ".testfilename-*"))
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)
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# discard() removes the temp file without making the write permanent
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def testdiscard(self):
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file = atomictempfile(self._filename)
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(dir, basename) = os.path.split(file._tempname)
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file.write(b"yo\n")
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file.discard()
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self.assertFalse(os.path.isfile(self._filename))
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self.assertTrue(basename not in os.listdir("."))
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# if a programmer screws up and passes bad args to atomictempfile, they
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# get a plain ordinary TypeError, not infinite recursion
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def testoops(self):
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with self.assertRaises(TypeError):
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atomictempfile()
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# checkambig=True avoids ambiguity of timestamp
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def testcheckambig(self):
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def atomicwrite(checkambig):
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f = atomictempfile(self._filename, checkambig=checkambig)
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f.writeutf8("FOO")
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f.close()
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# try some times, because reproduction of ambiguity depends on
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# "filesystem time"
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for i in xrange(5):
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atomicwrite(False)
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oldstat = util.stat(self._filename)
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if oldstat.st_ctime != oldstat.st_mtime:
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# subsequent changing never causes ambiguity
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continue
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repetition = 3
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# repeat atomic write with checkambig=True, to examine
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# whether st_mtime is advanced multiple times as expected
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for j in xrange(repetition):
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atomicwrite(True)
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newstat = util.stat(self._filename)
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if oldstat.st_ctime != newstat.st_ctime:
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# timestamp ambiguity was naturally avoided while repetition
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continue
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# st_mtime should be advanced "repetition" times, because
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# all atomicwrite() occurred at same time (in sec)
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self.assertTrue(
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newstat.st_mtime == ((oldstat.st_mtime + repetition) & 0x7FFFFFFF)
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)
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# no more examination is needed, if assumption above is true
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break
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else:
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# This platform seems too slow to examine anti-ambiguity
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# of file timestamp (or test happened to be executed at
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# bad timing). Exit silently in this case, because running
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# on other faster platforms can detect problems
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pass
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def testread(self):
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with open(self._filename, "wb") as f:
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f.write(b"foobar\n")
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file = atomictempfile(self._filename, mode="rb")
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self.assertTrue(file.read(), b"foobar\n")
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file.discard()
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def testcontextmanagersuccess(self):
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"""When the context closes, the file is closed"""
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with atomictempfile("foo") as f:
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self.assertFalse(os.path.isfile("foo"))
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f.write(b"argh\n")
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self.assertTrue(os.path.isfile("foo"))
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def testcontextmanagerfailure(self):
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"""On exception, the file is discarded"""
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try:
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with atomictempfile("foo") as f:
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self.assertFalse(os.path.isfile("foo"))
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f.write(b"argh\n")
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raise ValueError
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except ValueError:
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pass
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self.assertFalse(os.path.isfile("foo"))
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if __name__ == "__main__":
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import silenttestrunner
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silenttestrunner.main(__name__)
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