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'''
t2_inode_cache.py - this file is part of S3QL (http://s3ql.googlecode.com)
Copyright (C) 2008-2010 Nikolaus Rath <Nikolaus@rath.org>
This program can be distributed under the terms of the GNU LGPL.
'''
from __future__ import division, print_function
from s3ql import inode_cache
from s3ql.common import create_tables, init_tables
from s3ql.database import Connection
from _common import TestCase
import unittest2 as unittest
import time
import tempfile
class cache_tests(TestCase):
def setUp(self):
self.dbfile = tempfile.NamedTemporaryFile()
self.db = Connection(self.dbfile.name)
create_tables(self.db)
init_tables(self.db)
self.cache = inode_cache.InodeCache(self.db)
def tearDown(self):
self.cache.destroy()
def test_create(self):
attrs = {'mode': 784,
'refcount': 3,
'uid': 7,
'gid': 2,
'size': 34674,
'target': 'foobar',
'rdev': 11,
'atime': time.time(),
'ctime': time.time(),
'mtime': time.time() }
inode = self.cache.create_inode(**attrs)
for key in attrs.keys():
self.assertEqual(attrs[key], getattr(inode, key))
self.assertTrue(self.db.has_val('SELECT 1 FROM inodes WHERE id=?',
(inode.id,)))
def test_del(self):
attrs = {'mode': 784,
'refcount': 3,
'uid': 7,
'target': 'foobar',
'gid': 2,
'size': 34674,
'rdev': 11,
'atime': time.time(),
'ctime': time.time(),
'mtime': time.time() }
inode = self.cache.create_inode(**attrs)
del self.cache[inode.id]
self.assertFalse(self.db.has_val('SELECT 1 FROM inodes WHERE id=?', (inode.id,)))
self.assertRaises(KeyError, self.cache.__delitem__, inode.id)
def test_get(self):
attrs = {'mode': 784,
'refcount': 3,
'uid': 7,
'gid': 2,
'target': 'foobar',
'size': 34674,
'rdev': 11,
'atime': time.time(),
'ctime': time.time(),
'mtime': time.time() }
inode = self.cache.create_inode(**attrs)
self.assertEqual(inode, self.cache[inode.id])
self.db.execute('DELETE FROM inodes WHERE id=?', (inode.id,))
# Entry should still be in cache
self.assertEqual(inode, self.cache[inode.id])
# Now it should be out of the cache
for _ in xrange(inode_cache.CACHE_SIZE + 1):
dummy = self.cache[self.cache.create_inode(**attrs).id]
self.assertRaises(KeyError, self.cache.__getitem__, inode.id)
def suite():
return unittest.makeSuite(cache_tests)
if __name__ == "__main__":
unittest.main()
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