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from ._fixtures import _GenericBackendTest, _GenericMutexTest
from . import eq_, assert_raises_message
from unittest import TestCase
from threading import Thread
import time
import os
from nose import SkipTest
try:
import fcntl
except ImportError:
raise SkipTest("fcntl not available")
class DBMBackendTest(_GenericBackendTest):
backend = "dogpile.cache.dbm"
config_args = {
"arguments":{
"filename":"test.dbm"
}
}
class DBMBackendNoLockTest(_GenericBackendTest):
backend = "dogpile.cache.dbm"
config_args = {
"arguments":{
"filename":"test.dbm",
"rw_lockfile":False,
"dogpile_lockfile":False,
}
}
class DBMMutexTest(_GenericMutexTest):
backend = "dogpile.cache.dbm"
config_args = {
"arguments":{
"filename":"test.dbm"
}
}
def test_release_assertion_thread(self):
backend = self._backend()
m1 = backend.get_mutex("foo")
assert_raises_message(
AssertionError,
"this thread didn't do the acquire",
m1.release
)
def test_release_assertion_key(self):
backend = self._backend()
m1 = backend.get_mutex("foo")
m2 = backend.get_mutex("bar")
m1.acquire()
try:
assert_raises_message(
AssertionError,
"No acquire held for key 'bar'",
m2.release
)
finally:
m1.release()
def teardown():
for fname in os.listdir(os.curdir):
if fname.startswith("test.dbm"):
os.unlink(fname)
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