def test_copy_compact(self):
_, env = testlib.temp_env()
txn = env.begin(write=True)
txn.put(B('a'), B('b'))
txn.commit()
dest_dir = testlib.temp_dir()
env.copy(dest_dir, compact=True)
assert os.path.exists(dest_dir + '/data.mdb')
cenv = lmdb.open(dest_dir)
ctxn = cenv.begin()
assert ctxn.get(B('a')) == B('b')
env.close()
self.assertRaises(Exception, lambda: env.copy(testlib.temp_dir()))
def test_dupsort_putmulti_append(self):
_, env = testlib.temp_env()
db1 = env.open_db(B('db1'), dupsort=True)
txn = env.begin(write=True, db=db1)
with txn.cursor() as c:
tups = [BT('a', 'value1'), BT('b', 'value1'), BT('b', 'value2')]
assert (3, 3) == c.putmulti(tups, append=True)
def test_integerdup(self):
_, env = testlib.temp_env()
db1 = env.open_db(B('db1'), dupsort=True, integerdup=True)
txn = env.begin(write=True, db=db1)
assert txn.put(UINT_0001, UINT_0002)
assert txn.put(UINT_0001, UINT_0001)
assert txn.get(UINT_0001) == UINT_0001
def test_subdir_false_junk(self):
path = testlib.temp_file()
fp = open(path, 'wb')
fp.write(B('A' * 8192))
fp.close()
self.assertRaises(lmdb.InvalidError,
lambda: lmdb.open(path, subdir=False))
def test_ok(self):
path, env = testlib.temp_env()
with env as env_:
assert env_ is env
with env.begin() as txn:
txn.get(B('foo'))
self.assertRaises(Exception, lambda: env.begin())
def test_stat(self):
_, env = testlib.temp_env()
stat = env.stat()
for k in 'psize', 'depth', 'branch_pages', 'overflow_pages',\
'entries':
assert isinstance(stat[k], INT_TYPES), k
assert stat[k] >= 0
assert stat['entries'] == 0
txn = env.begin(write=True)
txn.put(B('a'), B('b'))
txn.commit()
stat = env.stat()
assert stat['entries'] == 1
env.close()
self.assertRaises(Exception, lambda: env.stat())
def test_copyfd_compact(self):
path, env = testlib.temp_env()
txn = env.begin(write=True)
txn.put(B('a'), B('b'))
txn.commit()
dst_path = testlib.temp_file(create=False)
fp = open(dst_path, 'wb')
env.copyfd(fp.fileno(), compact=True)
dstenv = lmdb.open(dst_path, subdir=False)
dtxn = dstenv.begin()
assert dtxn.get(B('a')) == B('b')
env.close()
self.assertRaises(Exception, lambda: env.copyfd(fp.fileno()))
fp.close()
def test_info(self):
_, env = testlib.temp_env()
info = env.info()
for k in 'map_addr', 'map_size', 'last_pgno', 'last_txnid', \
'max_readers', 'num_readers':
assert isinstance(info[k], INT_TYPES), k
assert info[k] >= 0
assert info['last_txnid'] == 0
txn = env.begin(write=True)
txn.put(B('a'), B(''))
txn.commit()
info = env.info()
assert info['last_txnid'] == 1
env.close()
self.assertRaises(Exception, lambda: env.info())
def setUp(self):
self.path, self.env = testlib.temp_env()
db = self.env.open_db(B('db1'), dupsort=True)
self.txn = self.env.begin(db, write=True)
for _ in range(2):
putData(self.txn)
self.c = self.txn.cursor()
self.empty_entry = ('', '')
def test_big_reverse(self):
path, env = testlib.temp_env()
txn = env.begin(write=True)
keys = [B('%05d' % i) for i in range(0xffff)]
for k in keys:
txn.put(k, k, append=True)
assert list(txn.cursor().iterprev(values=False)) == list(
reversed(keys))
def testSetRange(self):
self.assertEqual(False, self.c.set_range(B('x')))
testlib.putData(self.txn)
self.assertEqual(False, self.c.set_range(B('x')))
self.assertEqual(True, self.c.set_range(B('a')))
self.assertEqual(B('a'), self.c.key())
self.assertEqual(True, self.c.set_range(B('ba')))
self.assertEqual(B('baa'), self.c.key())
self.c.set_range(B(''))
self.assertEqual(B('a'), self.c.key())
def test_dupsort(self):
_, env = testlib.temp_env()
db1 = env.open_db(B('db1'), dupsort=True)
txn = env.begin(write=True, db=db1)
assert txn.put(B('a'), B('a'))
assert txn.put(B('a'), B('b'))
assert txn.get(B('a')) == B('a')
def test_17bf75b12eb94d9903cd62329048b146d5313bad(self):
"""
me_txn0 previously cached MDB_TXN_ERROR permanently. Fixed by
17bf75b12eb94d9903cd62329048b146d5313bad.
"""
path, env = testlib.temp_env(map_size=4096 * 9,
sync=False,
max_spare_txns=0)
for i in itertools.count():
try:
with env.begin(write=True) as txn:
txn.put(B(str(i)), B(str(i)))
except lmdb.MapFullError:
break
# Should not crash with MDB_BAD_TXN:
with env.begin(write=True) as txn:
txn.delete(B('1'))
def test_readonly_env_sub_eperm(self):
# https://github.com/dw/py-lmdb/issues/109
path, env = testlib.temp_env()
env.close()
env = lmdb.open(path, max_dbs=10, readonly=True)
self.assertRaises(
lmdb.ReadonlyError,
lambda: env.open_db(B('node_schedules'), create=True))
def test_dupsort_put_append(self):
_, env = testlib.temp_env()
db1 = env.open_db(B('db1'), dupsort=True)
txn = env.begin(write=True, db=db1)
with txn.cursor() as c:
assert c.put(B('a'), B('value1'), append=True)
assert c.put(B('b'), B('value1'), append=True)
assert c.put(B('b'), B('value2'), append=True)
def test_flags(self):
path, env = testlib.temp_env()
txn = env.begin(write=True)
for flag, val in self.FLAG_SETS:
key = B('%s-%s' % (flag, val))
db = env.open_db(key, txn=txn, **{flag: val})
assert db.flags(txn)[flag] == val
txn.commit()
# Test flag persistence.
env.close()
env = lmdb.open(path, max_dbs=10)
txn = env.begin(write=True)
for flag, val in self.FLAG_SETS:
key = B('%s-%s' % (flag, val))
db = env.open_db(key, txn=txn)
assert db.flags(txn)[flag] == val
def test_crash(self):
path, env = testlib.temp_env()
txn = env.begin(write=True)
try:
with txn.cursor() as curs:
curs.put(123, 123)
except:
pass
self.assertRaises(Exception, lambda: curs.get(B('foo')))
def test1(self):
"""Ensure MDB_NEXT is ignored on `c1' when it was previously positioned
on the key that `c2' just deleted."""
txn = self.env.begin(write=True)
cur = txn.cursor()
while cur.first():
cur.delete()
for i in range(1, 10):
cur.put(O(ord('a') + i) * i, B(''))
c1 = txn.cursor()
c1f = c1.iternext(values=False)
while next(c1f) != B('ddd'):
pass
c2 = txn.cursor()
assert c2.set_key(B('ddd'))
c2.delete()
assert next(c1f) == B('eeee')
def test_copyfd_compact(self):
path, env = testlib.temp_env()
txn = env.begin(write=True)
txn.put(B('a'), B('b'))
txn.commit()
dst_path = testlib.temp_file(create=False)
fp = open(dst_path, 'wb')
env.copyfd(fp.fileno())
dstenv = lmdb.open(dst_path, subdir=False)
dtxn = dstenv.begin()
assert dtxn.get(B('a')) == B('b')
fp.close()
# Test copy with transaction provided
dst_path = testlib.temp_file(create=False)
fp = open(dst_path, 'wb')
with env.begin(write=True) as txn:
copy_txn = env.begin()
txn.put(B('b'), B('b'))
assert dtxn.get(B('b')) is None
if have_txn_patch:
env.copyfd(fp.fileno(), compact=True, txn=copy_txn)
dstenv = lmdb.open(dst_path, subdir=False)
dtxn = dstenv.begin()
assert dtxn.get(B('a')) == B('b')
# Verify that the write that occurred outside the txn isn't seen in the
# copy
assert dtxn.get(B('b')) is None
dstenv.close()
else:
self.assertRaises(
Exception,
lambda: env.copyfd(fp.fileno(), compact=True, txn=copy_txn))
env.close()
self.assertRaises(Exception, lambda: env.copyfd(fp.fileno()))
fp.close()
def test_monster(self):
# Generate predictable sequence of sizes.
rand = random.Random()
rand.seed(0)
txn = self.env.begin(write=True)
keys = []
for i in range(20000):
key = B('%06x' % i)
val = B('x' * rand.randint(76, 350))
assert txn.put(key, val)
keys.append(key)
deleted = 0
for key in txn.cursor().iternext(values=False):
assert txn.delete(key), key
deleted += 1
assert deleted == len(keys), deleted
def test_empty(self):
_, env = testlib.temp_env()
db1 = env.open_db(B('db1'))
txn = env.begin(write=True)
txn.put(B('a'), B('a'), db=db1)
assert txn.get(B('a'), db=db1) == B('a')
txn.drop(db1, False)
assert txn.get(B('a')) is None
txn.drop(db1, False) # should succeed.
assert txn.get(B('a')) is None
def test_copy_compact(self):
_, env = testlib.temp_env()
txn = env.begin(write=True)
txn.put(B('a'), B('b'))
txn.commit()
dest_dir = testlib.temp_dir()
env.copy(dest_dir, compact=True)
assert os.path.exists(dest_dir + '/data.mdb')
cenv = lmdb.open(dest_dir)
ctxn = cenv.begin()
assert ctxn.get(B('a')) == B('b')
# Test copy with transaction provided
dest_dir = testlib.temp_dir()
with env.begin(write=True) as txn:
copy_txn = env.begin()
txn.put(B('b'), B('b'))
assert ctxn.get(B('b')) is None
if have_txn_patch:
env.copy(dest_dir, compact=True, txn=copy_txn)
assert os.path.exists(dest_dir + '/data.mdb')
cenv = lmdb.open(dest_dir)
ctxn = cenv.begin()
assert ctxn.get(B('a')) == B('b')
# Verify that the write that occurred outside the txn isn't seen in the
# copy
assert ctxn.get(B('b')) is None
else:
self.assertRaises(
Exception,
lambda: env.copy(dest_dir, compact=True, txn=copy_txn))
env.close()
self.assertRaises(Exception, lambda: env.copy(testlib.temp_dir()))
def test_close(self):
_, env = testlib.temp_env()
# Attempting things should be ok.
txn = env.begin(write=True)
txn.put(B('a'), B(''))
cursor = txn.cursor()
list(cursor)
cursor.first()
it = iter(cursor)
env.close()
# Repeated calls are ignored:
env.close()
# Attempting to use invalid objects should crash.
self.assertRaises(Exception, lambda: txn.cursor())
self.assertRaises(Exception, lambda: txn.commit())
self.assertRaises(Exception, lambda: cursor.first())
self.assertRaises(Exception, lambda: list(it))
# Abort should be OK though.
txn.abort()
# Attempting to start new txn should crash.
self.assertRaises(Exception, lambda: env.begin())
def test_2list_preserve(self):
l = [BT('a', ''), BT('a', '')]
consumed, added = self.c.putmulti(l, overwrite=False)
assert consumed == 2
assert added == 1
assert self.c.set_key(B('a'))
assert self.c.delete()
li = iter(l)
consumed, added = self.c.putmulti(li, overwrite=False)
assert consumed == 2
assert added == 1
def test_db(self):
_, env = testlib.temp_env()
maindb = env.open_db(None)
db1 = env.open_db(B('db1'))
txn = env.begin()
assert txn.get(B('a'), db=db1) is None
txn.abort()
txn = env.begin(write=True)
txn.put(B('a'), B('a'), db=db1)
txn.commit()
txn = env.begin()
assert txn.get(B('a')) is None
txn.abort()
txn = env.begin(db=db1)
assert txn.get(B('a')) == B('a')
assert txn.get(B('a'), db=maindb) is None
def test_double_delete(self):
_, env = testlib.temp_env()
db1 = env.open_db(B('db1'))
txn = env.begin(write=True, db=db1)
txn.put(B('a'), B('a'), db=db1)
txn.drop(db1)
self.assertRaises(lmdb.InvalidParameterError,
lambda: txn.get(B('a'), db=db1))
self.assertRaises(lmdb.InvalidParameterError, lambda: txn.drop(db1))
txn.commit()
db1 = env.open_db(B('db1'))
txn = env.begin(write=True, db=db1)
txn.put(B('a'), B('a'), db=db1)
txn.drop(db1)
self.assertRaises(lmdb.InvalidParameterError,
lambda: txn.get(B('a'), db=db1))
self.assertRaises(lmdb.InvalidParameterError, lambda: txn.drop(db1))
txn.commit()
def test_buffers(self):
_, env = testlib.temp_env()
txn = env.begin(write=True, buffers=True)
assert txn.put(B('a'), B('a'))
b = txn.get(B('a'))
assert b is not None
assert len(b) == 1
assert not isinstance(b, type(B('')))
txn.commit()
txn = env.begin(buffers=False)
b = txn.get(B('a'))
assert b is not None
assert len(b) == 1
assert isinstance(b, type(B('')))
txn.abort()
def testSetKey(self):
self.assertRaises(Exception, (lambda: self.c.set_key(B(''))))
self.assertEqual(False, self.c.set_key(B('missing')))
testlib.putData(self.txn)
self.assertEqual(True, self.c.set_key(B('b')))
self.assertEqual(False, self.c.set_key(B('ba')))
def testKeyValueItemEmpty(self):
self.assertEqual(B(''), self.c.key())
self.assertEqual(B(''), self.c.value())
self.assertEqual(BT('', ''), self.c.item())
def test_ok(self):
path, env = testlib.temp_env()
txn = env.begin(write=True)
with txn.cursor() as curs:
curs.put(B('foo'), B('123'))
self.assertRaises(Exception, lambda: curs.get(B('foo')))