mirror of
https://github.com/python/cpython.git
synced 2025-11-04 11:49:12 +00:00
128 lines
5.1 KiB
Python
128 lines
5.1 KiB
Python
from test import support
|
|
support.import_module("dbm.ndbm") #skip if not supported
|
|
import os
|
|
import unittest
|
|
import dbm.ndbm
|
|
from dbm.ndbm import error
|
|
|
|
class DbmTestCase(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
self.filename = support.TESTFN
|
|
self.d = dbm.ndbm.open(self.filename, 'c')
|
|
self.d.close()
|
|
|
|
def tearDown(self):
|
|
for suffix in ['', '.pag', '.dir', '.db']:
|
|
support.unlink(self.filename + suffix)
|
|
|
|
def test_keys(self):
|
|
self.d = dbm.ndbm.open(self.filename, 'c')
|
|
self.assertEqual(self.d.keys(), [])
|
|
self.d['a'] = 'b'
|
|
self.d[b'bytes'] = b'data'
|
|
self.d['12345678910'] = '019237410982340912840198242'
|
|
self.d.keys()
|
|
self.assertIn('a', self.d)
|
|
self.assertIn(b'a', self.d)
|
|
self.assertEqual(self.d[b'bytes'], b'data')
|
|
# get() and setdefault() work as in the dict interface
|
|
self.assertEqual(self.d.get(b'a'), b'b')
|
|
self.assertIsNone(self.d.get(b'xxx'))
|
|
self.assertEqual(self.d.get(b'xxx', b'foo'), b'foo')
|
|
with self.assertRaises(KeyError):
|
|
self.d['xxx']
|
|
self.assertEqual(self.d.setdefault(b'xxx', b'foo'), b'foo')
|
|
self.assertEqual(self.d[b'xxx'], b'foo')
|
|
self.d.close()
|
|
|
|
def test_empty_value(self):
|
|
if dbm.ndbm.library == 'Berkeley DB':
|
|
self.skipTest("Berkeley DB doesn't distinguish the empty value "
|
|
"from the absent one")
|
|
self.d = dbm.ndbm.open(self.filename, 'c')
|
|
self.assertEqual(self.d.keys(), [])
|
|
self.d['empty'] = ''
|
|
self.assertEqual(self.d.keys(), [b'empty'])
|
|
self.assertIn(b'empty', self.d)
|
|
self.assertEqual(self.d[b'empty'], b'')
|
|
self.assertEqual(self.d.get(b'empty'), b'')
|
|
self.assertEqual(self.d.setdefault(b'empty'), b'')
|
|
self.d.close()
|
|
|
|
def test_modes(self):
|
|
for mode in ['r', 'rw', 'w', 'n']:
|
|
try:
|
|
self.d = dbm.ndbm.open(self.filename, mode)
|
|
self.d.close()
|
|
except error:
|
|
self.fail()
|
|
|
|
def test_context_manager(self):
|
|
with dbm.ndbm.open(self.filename, 'c') as db:
|
|
db["ndbm context manager"] = "context manager"
|
|
|
|
with dbm.ndbm.open(self.filename, 'r') as db:
|
|
self.assertEqual(list(db.keys()), [b"ndbm context manager"])
|
|
|
|
with self.assertRaises(dbm.ndbm.error) as cm:
|
|
db.keys()
|
|
self.assertEqual(str(cm.exception),
|
|
"DBM object has already been closed")
|
|
|
|
def test_bytes(self):
|
|
with dbm.ndbm.open(self.filename, 'c') as db:
|
|
db[b'bytes key \xbd'] = b'bytes value \xbd'
|
|
with dbm.ndbm.open(self.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 dbm.ndbm.open(self.filename, 'c') as db:
|
|
db['Unicode key \U0001f40d'] = 'Unicode value \U0001f40d'
|
|
with dbm.ndbm.open(self.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 dbm.ndbm.open(self.filename, 'c') as db:
|
|
db[b'bytes key'] = b'bytes value'
|
|
with dbm.ndbm.open(self.filename, 'r') as db:
|
|
with self.assertRaises(error):
|
|
del db[b'not exist key']
|
|
with self.assertRaises(error):
|
|
del db[b'bytes key']
|
|
with self.assertRaises(error):
|
|
db[b'not exist key'] = b'not exist value'
|
|
|
|
@unittest.skipUnless(support.TESTFN_NONASCII,
|
|
'requires OS support of non-ASCII encodings')
|
|
def test_nonascii_filename(self):
|
|
filename = support.TESTFN_NONASCII
|
|
for suffix in ['', '.pag', '.dir', '.db']:
|
|
self.addCleanup(support.unlink, filename + suffix)
|
|
with dbm.ndbm.open(filename, 'c') as db:
|
|
db[b'key'] = b'value'
|
|
self.assertTrue(any(os.path.exists(filename + suffix)
|
|
for suffix in ['', '.pag', '.dir', '.db']))
|
|
with dbm.ndbm.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(dbm.ndbm.error) as cm:
|
|
dbm.ndbm.open(nonexisting_file)
|
|
self.assertIn(nonexisting_file, str(cm.exception))
|
|
self.assertEqual(cm.exception.filename, nonexisting_file)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|