本文整理匯總了Python中git.util.LockedFD._lockfilepath方法的典型用法代碼示例。如果您正苦於以下問題：Python LockedFD._lockfilepath方法的具體用法？Python LockedFD._lockfilepath怎麽用？Python LockedFD._lockfilepath使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類git.util.LockedFD的用法示例。
在下文中一共展示了LockedFD._lockfilepath方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: test_lockedfd
# 需要導入模塊: from git.util import LockedFD [as 別名]
# 或者: from git.util.LockedFD import _lockfilepath [as 別名]
def test_lockedfd(self):
my_file = tempfile.mktemp()
orig_data = "hello"
new_data = "world"
my_file_fp = open(my_file, "wb")
my_file_fp.write(orig_data)
my_file_fp.close()
try:
lfd = LockedFD(my_file)
lockfilepath = lfd._lockfilepath()
# cannot end before it was started
self.failUnlessRaises(AssertionError, lfd.rollback)
self.failUnlessRaises(AssertionError, lfd.commit)
# open for writing
assert not os.path.isfile(lockfilepath)
wfd = lfd.open(write=True)
assert lfd._fd is wfd
assert os.path.isfile(lockfilepath)
# write data and fail
os.write(wfd, new_data)
lfd.rollback()
assert lfd._fd is None
self._cmp_contents(my_file, orig_data)
assert not os.path.isfile(lockfilepath)
# additional call doesnt fail
lfd.commit()
lfd.rollback()
# test reading
lfd = LockedFD(my_file)
rfd = lfd.open(write=False)
assert os.read(rfd, len(orig_data)) == orig_data
assert os.path.isfile(lockfilepath)
# deletion rolls back
del(lfd)
assert not os.path.isfile(lockfilepath)
# write data - concurrently
lfd = LockedFD(my_file)
olfd = LockedFD(my_file)
assert not os.path.isfile(lockfilepath)
wfdstream = lfd.open(write=True, stream=True) # this time as stream
assert os.path.isfile(lockfilepath)
# another one fails
self.failUnlessRaises(IOError, olfd.open)
wfdstream.write(new_data)
lfd.commit()
assert not os.path.isfile(lockfilepath)
self._cmp_contents(my_file, new_data)
# could test automatic _end_writing on destruction
finally:
os.remove(my_file)
# END final cleanup
# try non-existing file for reading
lfd = LockedFD(tempfile.mktemp())
try:
lfd.open(write=False)
except OSError:
assert not os.path.exists(lfd._lockfilepath())
else:
self.fail("expected OSError")