169 lines
6.3 KiB
Python
169 lines
6.3 KiB
Python
from test import support
|
|
from test.support import import_helper
|
|
gdbm = import_helper.import_module("dbm.gnu") #skip if not supported
|
|
import unittest
|
|
import os
|
|
from test.support import TESTFN, TESTFN_NONASCII, unlink
|
|
|
|
|
|
filename = TESTFN
|
|
|
|
class TestGdbm(unittest.TestCase):
|
|
@staticmethod
|
|
def setUpClass():
|
|
if support.verbose:
|
|
try:
|
|
from _gdbm import _GDBM_VERSION as version
|
|
except ImportError:
|
|
pass
|
|
else:
|
|
print(f"gdbm version: {version}")
|
|
|
|
def setUp(self):
|
|
self.g = None
|
|
|
|
def tearDown(self):
|
|
if self.g is not None:
|
|
self.g.close()
|
|
unlink(filename)
|
|
|
|
def test_key_methods(self):
|
|
self.g = gdbm.open(filename, 'c')
|
|
self.assertEqual(self.g.keys(), [])
|
|
self.g['a'] = 'b'
|
|
self.g['12345678910'] = '019237410982340912840198242'
|
|
self.g[b'bytes'] = b'data'
|
|
key_set = set(self.g.keys())
|
|
self.assertEqual(key_set, set([b'a', b'bytes', b'12345678910']))
|
|
self.assertIn('a', self.g)
|
|
self.assertIn(b'a', self.g)
|
|
self.assertEqual(self.g[b'bytes'], b'data')
|
|
key = self.g.firstkey()
|
|
while key:
|
|
self.assertIn(key, key_set)
|
|
key_set.remove(key)
|
|
key = self.g.nextkey(key)
|
|
# get() and setdefault() work as in the dict interface
|
|
self.assertEqual(self.g.get(b'a'), b'b')
|
|
self.assertIsNone(self.g.get(b'xxx'))
|
|
self.assertEqual(self.g.get(b'xxx', b'foo'), b'foo')
|
|
with self.assertRaises(KeyError):
|
|
self.g['xxx']
|
|
self.assertEqual(self.g.setdefault(b'xxx', b'foo'), b'foo')
|
|
self.assertEqual(self.g[b'xxx'], b'foo')
|
|
|
|
def test_error_conditions(self):
|
|
# Try to open a non-existent database.
|
|
unlink(filename)
|
|
self.assertRaises(gdbm.error, gdbm.open, filename, 'r')
|
|
# Try to access a closed database.
|
|
self.g = gdbm.open(filename, 'c')
|
|
self.g.close()
|
|
self.assertRaises(gdbm.error, lambda: self.g['a'])
|
|
# try pass an invalid open flag
|
|
self.assertRaises(gdbm.error, lambda: gdbm.open(filename, 'rx').close())
|
|
|
|
def test_flags(self):
|
|
# Test the flag parameter open() by trying all supported flag modes.
|
|
all = set(gdbm.open_flags)
|
|
# Test standard flags (presumably "crwn").
|
|
modes = all - set('fsu')
|
|
for mode in sorted(modes): # put "c" mode first
|
|
self.g = gdbm.open(filename, mode)
|
|
self.g.close()
|
|
|
|
# Test additional flags (presumably "fsu").
|
|
flags = all - set('crwn')
|
|
for mode in modes:
|
|
for flag in flags:
|
|
self.g = gdbm.open(filename, mode + flag)
|
|
self.g.close()
|
|
|
|
def test_reorganize(self):
|
|
self.g = gdbm.open(filename, 'c')
|
|
size0 = os.path.getsize(filename)
|
|
|
|
# bpo-33901: on macOS with gdbm 1.15, an empty database uses 16 MiB
|
|
# and adding an entry of 10,000 B has no effect on the file size.
|
|
# Add size0 bytes to make sure that the file size changes.
|
|
value_size = max(size0, 10000)
|
|
self.g['x'] = 'x' * value_size
|
|
size1 = os.path.getsize(filename)
|
|
self.assertGreater(size1, size0)
|
|
|
|
del self.g['x']
|
|
# 'size' is supposed to be the same even after deleting an entry.
|
|
self.assertEqual(os.path.getsize(filename), size1)
|
|
|
|
self.g.reorganize()
|
|
size2 = os.path.getsize(filename)
|
|
self.assertLess(size2, size1)
|
|
self.assertGreaterEqual(size2, size0)
|
|
|
|
def test_context_manager(self):
|
|
with gdbm.open(filename, 'c') as db:
|
|
db["gdbm context manager"] = "context manager"
|
|
|
|
with gdbm.open(filename, 'r') as db:
|
|
self.assertEqual(list(db.keys()), [b"gdbm context manager"])
|
|
|
|
with self.assertRaises(gdbm.error) as cm:
|
|
db.keys()
|
|
self.assertEqual(str(cm.exception),
|
|
"GDBM object has already been closed")
|
|
|
|
def test_bytes(self):
|
|
with gdbm.open(filename, 'c') as db:
|
|
db[b'bytes key \xbd'] = b'bytes value \xbd'
|
|
with gdbm.open(filename, 'r') as db:
|
|
self.assertEqual(list(db.keys()), [b'bytes key \xbd'])
|
|
self.assertTrue(b'bytes key \xbd' in db)
|
|
self.assertEqual(db[b'bytes key \xbd'], b'bytes value \xbd')
|
|
|
|
def test_unicode(self):
|
|
with gdbm.open(filename, 'c') as db:
|
|
db['Unicode key \U0001f40d'] = 'Unicode value \U0001f40d'
|
|
with gdbm.open(filename, 'r') as db:
|
|
self.assertEqual(list(db.keys()), ['Unicode key \U0001f40d'.encode()])
|
|
self.assertTrue('Unicode key \U0001f40d'.encode() in db)
|
|
self.assertTrue('Unicode key \U0001f40d' in db)
|
|
self.assertEqual(db['Unicode key \U0001f40d'.encode()],
|
|
'Unicode value \U0001f40d'.encode())
|
|
self.assertEqual(db['Unicode key \U0001f40d'],
|
|
'Unicode value \U0001f40d'.encode())
|
|
|
|
def test_write_readonly_file(self):
|
|
with gdbm.open(filename, 'c') as db:
|
|
db[b'bytes key'] = b'bytes value'
|
|
with gdbm.open(filename, 'r') as db:
|
|
with self.assertRaises(gdbm.error):
|
|
del db[b'not exist key']
|
|
with self.assertRaises(gdbm.error):
|
|
del db[b'bytes key']
|
|
with self.assertRaises(gdbm.error):
|
|
db[b'not exist key'] = b'not exist value'
|
|
|
|
@unittest.skipUnless(TESTFN_NONASCII,
|
|
'requires OS support of non-ASCII encodings')
|
|
def test_nonascii_filename(self):
|
|
filename = TESTFN_NONASCII
|
|
self.addCleanup(unlink, filename)
|
|
with gdbm.open(filename, 'c') as db:
|
|
db[b'key'] = b'value'
|
|
self.assertTrue(os.path.exists(filename))
|
|
with gdbm.open(filename, 'r') as db:
|
|
self.assertEqual(list(db.keys()), [b'key'])
|
|
self.assertTrue(b'key' in db)
|
|
self.assertEqual(db[b'key'], b'value')
|
|
|
|
def test_nonexisting_file(self):
|
|
nonexisting_file = 'nonexisting-file'
|
|
with self.assertRaises(gdbm.error) as cm:
|
|
gdbm.open(nonexisting_file)
|
|
self.assertIn(nonexisting_file, str(cm.exception))
|
|
self.assertEqual(cm.exception.filename, nonexisting_file)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|