本文整理汇总了Python中git.util.LockedFD._lockfilepath方法的典型用法代码示例。如果您正苦于以下问题：Python LockedFD._lockfilepath方法的具体用法？Python LockedFD._lockfilepath怎么用？Python LockedFD._lockfilepath使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类git.util.LockedFD的用法示例。
在下文中一共展示了LockedFD._lockfilepath方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_lockedfd
# 需要导入模块: from git.util import LockedFD [as 别名]
# 或者: from git.util.LockedFD import _lockfilepath [as 别名]
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")