cpython/Lib/bsddb/test/test_dbshelve.py

368 lines
10 KiB
Python

"""
TestCases for checking dbShelve objects.
"""
import os
import shutil
import tempfile, random
import unittest
from bsddb import db, dbshelve
from bsddb.test.test_all import verbose
#----------------------------------------------------------------------
# We want the objects to be comparable so we can test dbshelve.values
# later on.
class DataClass:
def __init__(self):
self.value = random.random()
def __repr__(self):
return "DataClass(%r)" % self.value
def __eq__(self, other):
value = self.value
if isinstance(other, DataClass):
other = other.value
return value == other
def __lt__(self, other):
value = self.value
if isinstance(other, DataClass):
other = other.value
return value < other
letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
class DBShelveTestCase(unittest.TestCase):
def setUp(self):
self.filename = tempfile.mktemp()
self.do_open()
def tearDown(self):
self.do_close()
try:
os.remove(self.filename)
except os.error:
pass
def mk(self, key):
"""Turn key into an appropriate key type for this db"""
# override in child class for RECNO
return key.encode("ascii")
def populateDB(self, d):
for x in letters:
d[self.mk('S' + x)] = 10 * x # add a string
d[self.mk('I' + x)] = ord(x) # add an integer
d[self.mk('L' + x)] = [x] * 10 # add a list
inst = DataClass() # add an instance
inst.S = 10 * x
inst.I = ord(x)
inst.L = [x] * 10
d[self.mk('O' + x)] = inst
# overridable in derived classes to affect how the shelf is created/opened
def do_open(self):
self.d = dbshelve.open(self.filename)
# and closed...
def do_close(self):
self.d.close()
def test01_basics(self):
if verbose:
print('\n', '-=' * 30)
print("Running %s.test01_basics..." % self.__class__.__name__)
self.populateDB(self.d)
if verbose:
print(1, self.d.keys())
self.d.sync()
if verbose:
print(2, self.d.keys())
self.do_close()
self.do_open()
if verbose:
print(3, self.d.keys())
d = self.d
l = len(d)
k = d.keys()
s = d.stat()
f = d.fd()
if verbose:
print("length:", l)
print("keys:", k)
print("stats:", s)
self.assertFalse(d.has_key(self.mk('bad key')))
self.assertTrue(d.has_key(self.mk('IA')), d.keys())
self.assertTrue(d.has_key(self.mk('OA')))
d.delete(self.mk('IA'))
del d[self.mk('OA')]
self.assertFalse(d.has_key(self.mk('IA')))
self.assertFalse(d.has_key(self.mk('OA')))
self.assertEqual(len(d), l-2)
values = []
for key in d.keys():
value = d[key]
values.append(value)
if verbose:
print("%s: %s" % (key, value))
self.checkrec(key, value)
dbvalues = sorted(d.values(), key=lambda x: (str(type(x)), x))
self.assertEqual(len(dbvalues), len(d.keys()))
values.sort(key=lambda x: (str(type(x)), x))
self.assertEqual(values, dbvalues, "%r != %r" % (values, dbvalues))
items = d.items()
self.assertEqual(len(items), len(values))
for key, value in items:
self.checkrec(key, value)
self.assertEqual(d.get(self.mk('bad key')), None)
self.assertEqual(d.get(self.mk('bad key'), None), None)
self.assertEqual(d.get(self.mk('bad key'), b'a string'), b'a string')
self.assertEqual(d.get(self.mk('bad key'), [1, 2, 3]), [1, 2, 3])
d.set_get_returns_none(0)
self.assertRaises(db.DBNotFoundError, d.get, self.mk('bad key'))
d.set_get_returns_none(1)
d.put(self.mk('new key'), b'new data')
self.assertEqual(d.get(self.mk('new key')), b'new data')
self.assertEqual(d[self.mk('new key')], b'new data')
def test02_cursors(self):
if verbose:
print('\n', '-=' * 30)
print("Running %s.test02_cursors..." % self.__class__.__name__)
self.populateDB(self.d)
d = self.d
count = 0
c = d.cursor()
rec = c.first()
while rec is not None:
count = count + 1
if verbose:
print(repr(rec))
key, value = rec
self.checkrec(key, value)
rec = c.next()
del c
self.assertEqual(count, len(d))
count = 0
c = d.cursor()
rec = c.last()
while rec is not None:
count = count + 1
if verbose:
print(rec)
key, value = rec
self.checkrec(key, value)
rec = c.prev()
self.assertEqual(count, len(d))
c.set(self.mk('SS'))
key, value = c.current()
self.checkrec(key, value)
del c
def test03_append(self):
# NOTE: this is overridden in RECNO subclass, don't change its name.
if verbose:
print('\n', '-=' * 30)
print("Running %s.test03_append..." % self.__class__.__name__)
self.assertRaises(dbshelve.DBShelveError,
self.d.append, b'unit test was here')
def checkrec(self, key, value):
# override this in a subclass if the key type is different
x = key[1:]
if key[0:1] == b'S':
self.assertEquals(type(value), str)
self.assertEquals(value, 10 * x.decode("ascii"))
elif key[0:1] == b'I':
self.assertEquals(type(value), int)
self.assertEquals(value, ord(x))
elif key[0:1] == b'L':
self.assertEquals(type(value), list)
self.assertEquals(value, [x.decode("ascii")] * 10)
elif key[0:1] == b'O':
self.assertEquals(value.S, 10 * x.decode("ascii"))
self.assertEquals(value.I, ord(x))
self.assertEquals(value.L, [x.decode("ascii")] * 10)
else:
self.fail('Unknown key type, fix the test')
#----------------------------------------------------------------------
class BasicShelveTestCase(DBShelveTestCase):
def do_open(self):
self.d = dbshelve.DBShelf()
self.d.open(self.filename, self.dbtype, self.dbflags)
def do_close(self):
self.d.close()
class BTreeShelveTestCase(BasicShelveTestCase):
dbtype = db.DB_BTREE
dbflags = db.DB_CREATE
class HashShelveTestCase(BasicShelveTestCase):
dbtype = db.DB_HASH
dbflags = db.DB_CREATE
class ThreadBTreeShelveTestCase(BasicShelveTestCase):
dbtype = db.DB_BTREE
dbflags = db.DB_CREATE | db.DB_THREAD
class ThreadHashShelveTestCase(BasicShelveTestCase):
dbtype = db.DB_HASH
dbflags = db.DB_CREATE | db.DB_THREAD
#----------------------------------------------------------------------
class BasicEnvShelveTestCase(DBShelveTestCase):
def setUp(self):
self.homeDir = tempfile.mkdtemp()
self.filename = 'dbshelve_db_file.db'
self.do_open()
def do_open(self):
self.env = db.DBEnv()
self.env.open(self.homeDir, self.envflags | db.DB_INIT_MPOOL | db.DB_CREATE)
self.d = dbshelve.DBShelf(self.env)
self.d.open(self.filename, self.dbtype, self.dbflags)
def do_close(self):
self.d.close()
self.env.close()
def tearDown(self):
self.do_close()
shutil.rmtree(self.homeDir)
class EnvBTreeShelveTestCase(BasicEnvShelveTestCase):
envflags = 0
dbtype = db.DB_BTREE
dbflags = db.DB_CREATE
class EnvHashShelveTestCase(BasicEnvShelveTestCase):
envflags = 0
dbtype = db.DB_HASH
dbflags = db.DB_CREATE
class EnvThreadBTreeShelveTestCase(BasicEnvShelveTestCase):
envflags = db.DB_THREAD
dbtype = db.DB_BTREE
dbflags = db.DB_CREATE | db.DB_THREAD
class EnvThreadHashShelveTestCase(BasicEnvShelveTestCase):
envflags = db.DB_THREAD
dbtype = db.DB_HASH
dbflags = db.DB_CREATE | db.DB_THREAD
#----------------------------------------------------------------------
# test cases for a DBShelf in a RECNO DB.
class RecNoShelveTestCase(BasicShelveTestCase):
dbtype = db.DB_RECNO
dbflags = db.DB_CREATE
def setUp(self):
BasicShelveTestCase.setUp(self)
# pool to assign integer key values out of
self.key_pool = list(range(1, 5000))
self.key_map = {} # map string keys to the number we gave them
self.intkey_map = {} # reverse map of above
def mk(self, key):
if key not in self.key_map:
self.key_map[key] = self.key_pool.pop(0)
self.intkey_map[self.key_map[key]] = key.encode('ascii')
return self.key_map[key]
def checkrec(self, intkey, value):
key = self.intkey_map[intkey]
BasicShelveTestCase.checkrec(self, key, value)
def test03_append(self):
if verbose:
print('\n', '-=' * 30)
print("Running %s.test03_append..." % self.__class__.__name__)
self.d[1] = b'spam'
self.d[5] = b'eggs'
self.assertEqual(6, self.d.append(b'spam'))
self.assertEqual(7, self.d.append(b'baked beans'))
self.assertEqual(b'spam', self.d.get(6))
self.assertEqual(b'spam', self.d.get(1))
self.assertEqual(b'baked beans', self.d.get(7))
self.assertEqual(b'eggs', self.d.get(5))
#----------------------------------------------------------------------
def test_suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(DBShelveTestCase))
suite.addTest(unittest.makeSuite(BTreeShelveTestCase))
suite.addTest(unittest.makeSuite(HashShelveTestCase))
suite.addTest(unittest.makeSuite(ThreadBTreeShelveTestCase))
suite.addTest(unittest.makeSuite(ThreadHashShelveTestCase))
suite.addTest(unittest.makeSuite(EnvBTreeShelveTestCase))
suite.addTest(unittest.makeSuite(EnvHashShelveTestCase))
suite.addTest(unittest.makeSuite(EnvThreadBTreeShelveTestCase))
suite.addTest(unittest.makeSuite(EnvThreadHashShelveTestCase))
suite.addTest(unittest.makeSuite(RecNoShelveTestCase))
return suite
if __name__ == '__main__':
unittest.main(defaultTest='test_suite')