mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-26 14:50:36 +00:00
101 lines
3.2 KiB
Python
101 lines
3.2 KiB
Python
|
# Copyright (C) 2010, 2011 Sebastian Thiel (byronimo@gmail.com) and contributors
|
||
|
|
#
|
||
|
|
# This module is part of GitDB and is released under
|
||
|
|
# the New BSD License: http://www.opensource.org/licenses/bsd-license.php
|
||
|
|
"""Test for object db"""
|
||
|
|
import tempfile
|
||
|
|
import os
|
||
|
|
|
||
|
|
from gitdb.test.lib import TestBase
|
||
|
|
from gitdb.util import (
|
||
|
|
to_hex_sha,
|
||
|
|
to_bin_sha,
|
||
|
|
NULL_HEX_SHA,
|
||
|
|
LockedFD
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class TestUtils(TestBase):
|
||
|
|
|
||
|
|
def test_basics(self):
|
||
|
|
assert to_hex_sha(NULL_HEX_SHA) == NULL_HEX_SHA
|
||
|
|
assert len(to_bin_sha(NULL_HEX_SHA)) == 20
|
||
|
|
assert to_hex_sha(to_bin_sha(NULL_HEX_SHA)) == NULL_HEX_SHA.encode("ascii")
|
||
|
|
|
||
|
|
def _cmp_contents(self, file_path, data):
|
||
|
|
# raise if data from file at file_path
|
||
|
|
# does not match data string
|
||
|
|
with open(file_path, "rb") as fp:
|
||
|
|
assert fp.read() == data.encode("ascii")
|
||
|
|
|
||
|
|
def test_lockedfd(self):
|
||
|
|
my_file = tempfile.mktemp()
|
||
|
|
orig_data = "hello"
|
||
|
|
new_data = "world"
|
||
|
|
with open(my_file, "wb") as my_file_fp:
|
||
|
|
my_file_fp.write(orig_data.encode("ascii"))
|
||
|
|
|
||
|
|
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.encode("ascii"))
|
||
|
|
lfd.rollback()
|
||
|
|
assert lfd._fd is None
|
||
|
|
self._cmp_contents(my_file, orig_data)
|
||
|
|
assert not os.path.isfile(lockfilepath)
|
||
|
|
|
||
|
|
# additional call doesn't 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.encode("ascii")
|
||
|
|
|
||
|
|
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.encode("ascii"))
|
||
|
|
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")
|
||
|
|
# END handle exceptions
|