Mercurial > hg
view tests/test-atomictempfile.py @ 29291:15e533b7909c
sslutil: refactor code for fingerprint matching
We didn't need to use a temporary variable to indicate success because
we just return anyway.
This refactor makes the code simpler. While we're here, we also call
into formatfingerprint() to ensure the fingerprint from the proper
hashing algorithm is logged.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 30 May 2016 15:43:03 -0700 |
parents | a109bf7e0dc2 |
children | 1acf654f0985 |
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from __future__ import absolute_import import glob import os import unittest from mercurial import ( util, ) atomictempfile = util.atomictempfile class testatomictempfile(unittest.TestCase): def test1_simple(self): if os.path.exists('foo'): os.remove('foo') file = atomictempfile('foo') (dir, basename) = os.path.split(file._tempname) self.assertFalse(os.path.isfile('foo')) self.assertTrue(basename in glob.glob('.foo-*')) file.write(b'argh\n') file.close() self.assertTrue(os.path.isfile('foo')) self.assertTrue(basename not in glob.glob('.foo-*')) # discard() removes the temp file without making the write permanent def test2_discard(self): if os.path.exists('foo'): os.remove('foo') file = atomictempfile('foo') (dir, basename) = os.path.split(file._tempname) file.write(b'yo\n') file.discard() self.assertFalse(os.path.isfile('foo')) self.assertTrue(basename not in os.listdir('.')) # if a programmer screws up and passes bad args to atomictempfile, they # get a plain ordinary TypeError, not infinite recursion def test3_oops(self): self.assertRaises(TypeError, atomictempfile) # checkambig=True avoids ambiguity of timestamp def test4_checkambig(self): def atomicwrite(checkambig): f = atomictempfile('foo', checkambig=checkambig) f.write('FOO') f.close() # try some times, because reproduction of ambiguity depends on # "filesystem time" for i in xrange(5): atomicwrite(False) oldstat = os.stat('foo') if oldstat.st_ctime != oldstat.st_mtime: # subsequent changing never causes ambiguity continue repetition = 3 # repeat atomic write with checkambig=True, to examine # whether st_mtime is advanced multiple times as expecetd for j in xrange(repetition): atomicwrite(True) newstat = os.stat('foo') if oldstat.st_ctime != newstat.st_ctime: # timestamp ambiguity was naturally avoided while repetition continue # st_mtime should be advanced "repetition" times, because # all atomicwrite() occured at same time (in sec) self.assertTrue(newstat.st_mtime == ((oldstat.st_mtime + repetition) & 0x7fffffff)) # no more examination is needed, if assumption above is true break else: # This platform seems too slow to examine anti-ambiguity # of file timestamp (or test happened to be executed at # bad timing). Exit silently in this case, because running # on other faster platforms can detect problems pass if __name__ == '__main__': import silenttestrunner silenttestrunner.main(__name__)