mirror of
https://github.com/python/cpython.git
synced 2024-11-23 18:04:37 +08:00
fc06096911
The directory file for a newly created database is now created immediately after opening instead of deferring this until synchronizing or closing.
389 lines
14 KiB
Python
389 lines
14 KiB
Python
"""Test script for the dumbdbm module
|
|
Original by Roger E. Masse
|
|
"""
|
|
|
|
import contextlib
|
|
import io
|
|
import operator
|
|
import os
|
|
import stat
|
|
import unittest
|
|
import dbm.dumb as dumbdbm
|
|
from test import support
|
|
from test.support import os_helper
|
|
from functools import partial
|
|
|
|
_fname = os_helper.TESTFN
|
|
|
|
|
|
def _delete_files():
|
|
for ext in [".dir", ".dat", ".bak"]:
|
|
try:
|
|
os.unlink(_fname + ext)
|
|
except OSError:
|
|
pass
|
|
|
|
class DumbDBMTestCase(unittest.TestCase):
|
|
_dict = {b'0': b'',
|
|
b'a': b'Python:',
|
|
b'b': b'Programming',
|
|
b'c': b'the',
|
|
b'd': b'way',
|
|
b'f': b'Guido',
|
|
b'g': b'intended',
|
|
'\u00fc'.encode('utf-8') : b'!',
|
|
}
|
|
|
|
def test_dumbdbm_creation(self):
|
|
with contextlib.closing(dumbdbm.open(_fname, 'c')) as f:
|
|
self.assertEqual(list(f.keys()), [])
|
|
for key in self._dict:
|
|
f[key] = self._dict[key]
|
|
self.read_helper(f)
|
|
|
|
@unittest.skipUnless(hasattr(os, 'umask'), 'test needs os.umask()')
|
|
@os_helper.skip_unless_working_chmod
|
|
def test_dumbdbm_creation_mode(self):
|
|
try:
|
|
old_umask = os.umask(0o002)
|
|
f = dumbdbm.open(_fname, 'c', 0o637)
|
|
f.close()
|
|
finally:
|
|
os.umask(old_umask)
|
|
|
|
expected_mode = 0o635
|
|
if os.name != 'posix':
|
|
# Windows only supports setting the read-only attribute.
|
|
# This shouldn't fail, but doesn't work like Unix either.
|
|
expected_mode = 0o666
|
|
|
|
import stat
|
|
st = os.stat(_fname + '.dat')
|
|
self.assertEqual(stat.S_IMODE(st.st_mode), expected_mode)
|
|
st = os.stat(_fname + '.dir')
|
|
self.assertEqual(stat.S_IMODE(st.st_mode), expected_mode)
|
|
|
|
def test_close_twice(self):
|
|
f = dumbdbm.open(_fname)
|
|
f[b'a'] = b'b'
|
|
self.assertEqual(f[b'a'], b'b')
|
|
f.close()
|
|
f.close()
|
|
|
|
def test_dumbdbm_modification(self):
|
|
self.init_db()
|
|
with contextlib.closing(dumbdbm.open(_fname, 'w')) as f:
|
|
self._dict[b'g'] = f[b'g'] = b"indented"
|
|
self.read_helper(f)
|
|
# setdefault() works as in the dict interface
|
|
self.assertEqual(f.setdefault(b'xxx', b'foo'), b'foo')
|
|
self.assertEqual(f[b'xxx'], b'foo')
|
|
|
|
def test_dumbdbm_read(self):
|
|
self.init_db()
|
|
with contextlib.closing(dumbdbm.open(_fname, 'r')) as f:
|
|
self.read_helper(f)
|
|
with self.assertRaisesRegex(dumbdbm.error,
|
|
'The database is opened for reading only'):
|
|
f[b'g'] = b'x'
|
|
with self.assertRaisesRegex(dumbdbm.error,
|
|
'The database is opened for reading only'):
|
|
del f[b'a']
|
|
# get() works as in the dict interface
|
|
self.assertEqual(f.get(b'a'), self._dict[b'a'])
|
|
self.assertEqual(f.get(b'xxx', b'foo'), b'foo')
|
|
self.assertIsNone(f.get(b'xxx'))
|
|
with self.assertRaises(KeyError):
|
|
f[b'xxx']
|
|
|
|
def test_dumbdbm_keys(self):
|
|
self.init_db()
|
|
with contextlib.closing(dumbdbm.open(_fname)) as f:
|
|
keys = self.keys_helper(f)
|
|
|
|
def test_write_contains(self):
|
|
with contextlib.closing(dumbdbm.open(_fname)) as f:
|
|
f[b'1'] = b'hello'
|
|
self.assertIn(b'1', f)
|
|
|
|
def test_write_write_read(self):
|
|
# test for bug #482460
|
|
with contextlib.closing(dumbdbm.open(_fname)) as f:
|
|
f[b'1'] = b'hello'
|
|
f[b'1'] = b'hello2'
|
|
with contextlib.closing(dumbdbm.open(_fname)) as f:
|
|
self.assertEqual(f[b'1'], b'hello2')
|
|
|
|
def test_str_read(self):
|
|
self.init_db()
|
|
with contextlib.closing(dumbdbm.open(_fname, 'r')) as f:
|
|
self.assertEqual(f['\u00fc'], self._dict['\u00fc'.encode('utf-8')])
|
|
|
|
def test_str_write_contains(self):
|
|
self.init_db()
|
|
with contextlib.closing(dumbdbm.open(_fname)) as f:
|
|
f['\u00fc'] = b'!'
|
|
f['1'] = 'a'
|
|
with contextlib.closing(dumbdbm.open(_fname, 'r')) as f:
|
|
self.assertIn('\u00fc', f)
|
|
self.assertEqual(f['\u00fc'.encode('utf-8')],
|
|
self._dict['\u00fc'.encode('utf-8')])
|
|
self.assertEqual(f[b'1'], b'a')
|
|
|
|
def test_line_endings(self):
|
|
# test for bug #1172763: dumbdbm would die if the line endings
|
|
# weren't what was expected.
|
|
with contextlib.closing(dumbdbm.open(_fname)) as f:
|
|
f[b'1'] = b'hello'
|
|
f[b'2'] = b'hello2'
|
|
|
|
# Mangle the file by changing the line separator to Windows or Unix
|
|
with io.open(_fname + '.dir', 'rb') as file:
|
|
data = file.read()
|
|
if os.linesep == '\n':
|
|
data = data.replace(b'\n', b'\r\n')
|
|
else:
|
|
data = data.replace(b'\r\n', b'\n')
|
|
with io.open(_fname + '.dir', 'wb') as file:
|
|
file.write(data)
|
|
|
|
f = dumbdbm.open(_fname)
|
|
self.assertEqual(f[b'1'], b'hello')
|
|
self.assertEqual(f[b'2'], b'hello2')
|
|
|
|
|
|
def read_helper(self, f):
|
|
keys = self.keys_helper(f)
|
|
for key in self._dict:
|
|
self.assertEqual(self._dict[key], f[key])
|
|
|
|
def init_db(self):
|
|
with contextlib.closing(dumbdbm.open(_fname, 'n')) as f:
|
|
for k in self._dict:
|
|
f[k] = self._dict[k]
|
|
|
|
def keys_helper(self, f):
|
|
keys = sorted(f.keys())
|
|
dkeys = sorted(self._dict.keys())
|
|
self.assertEqual(keys, dkeys)
|
|
return keys
|
|
|
|
# Perform randomized operations. This doesn't make assumptions about
|
|
# what *might* fail.
|
|
def test_random(self):
|
|
import random
|
|
d = {} # mirror the database
|
|
for dummy in range(5):
|
|
with contextlib.closing(dumbdbm.open(_fname)) as f:
|
|
for dummy in range(100):
|
|
k = random.choice('abcdefghijklm')
|
|
if random.random() < 0.2:
|
|
if k in d:
|
|
del d[k]
|
|
del f[k]
|
|
else:
|
|
v = random.choice((b'a', b'b', b'c')) * random.randrange(10000)
|
|
d[k] = v
|
|
f[k] = v
|
|
self.assertEqual(f[k], v)
|
|
|
|
with contextlib.closing(dumbdbm.open(_fname)) as f:
|
|
expected = sorted((k.encode("latin-1"), v) for k, v in d.items())
|
|
got = sorted(f.items())
|
|
self.assertEqual(expected, got)
|
|
|
|
def test_context_manager(self):
|
|
with dumbdbm.open(_fname, 'c') as db:
|
|
db["dumbdbm context manager"] = "context manager"
|
|
|
|
with dumbdbm.open(_fname, 'r') as db:
|
|
self.assertEqual(list(db.keys()), [b"dumbdbm context manager"])
|
|
|
|
with self.assertRaises(dumbdbm.error):
|
|
db.keys()
|
|
|
|
def test_check_closed(self):
|
|
f = dumbdbm.open(_fname, 'c')
|
|
f.close()
|
|
|
|
for meth in (partial(operator.delitem, f),
|
|
partial(operator.setitem, f, 'b'),
|
|
partial(operator.getitem, f),
|
|
partial(operator.contains, f)):
|
|
with self.assertRaises(dumbdbm.error) as cm:
|
|
meth('test')
|
|
self.assertEqual(str(cm.exception),
|
|
"DBM object has already been closed")
|
|
|
|
for meth in (operator.methodcaller('keys'),
|
|
operator.methodcaller('iterkeys'),
|
|
operator.methodcaller('items'),
|
|
len):
|
|
with self.assertRaises(dumbdbm.error) as cm:
|
|
meth(f)
|
|
self.assertEqual(str(cm.exception),
|
|
"DBM object has already been closed")
|
|
|
|
def test_create_new(self):
|
|
with dumbdbm.open(_fname, 'n') as f:
|
|
for k in self._dict:
|
|
f[k] = self._dict[k]
|
|
|
|
with dumbdbm.open(_fname, 'n') as f:
|
|
self.assertEqual(f.keys(), [])
|
|
|
|
def test_eval(self):
|
|
with open(_fname + '.dir', 'w', encoding="utf-8") as stream:
|
|
stream.write("str(print('Hacked!')), 0\n")
|
|
with support.captured_stdout() as stdout:
|
|
with self.assertRaises(ValueError):
|
|
with dumbdbm.open(_fname) as f:
|
|
pass
|
|
self.assertEqual(stdout.getvalue(), '')
|
|
|
|
def test_missing_data(self):
|
|
for value in ('r', 'w'):
|
|
_delete_files()
|
|
with self.assertRaises(FileNotFoundError):
|
|
dumbdbm.open(_fname, value)
|
|
self.assertFalse(os.path.exists(_fname + '.dat'))
|
|
self.assertFalse(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
|
|
for value in ('c', 'n'):
|
|
_delete_files()
|
|
with dumbdbm.open(_fname, value) as f:
|
|
self.assertTrue(os.path.exists(_fname + '.dat'))
|
|
self.assertTrue(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
|
|
for value in ('c', 'n'):
|
|
_delete_files()
|
|
with dumbdbm.open(_fname, value) as f:
|
|
f['key'] = 'value'
|
|
self.assertTrue(os.path.exists(_fname + '.dat'))
|
|
self.assertTrue(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
self.assertTrue(os.path.exists(_fname + '.bak'))
|
|
|
|
def test_missing_index(self):
|
|
with dumbdbm.open(_fname, 'n') as f:
|
|
pass
|
|
os.unlink(_fname + '.dir')
|
|
for value in ('r', 'w'):
|
|
with self.assertRaises(FileNotFoundError):
|
|
dumbdbm.open(_fname, value)
|
|
self.assertFalse(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
|
|
for value in ('c', 'n'):
|
|
with dumbdbm.open(_fname, value) as f:
|
|
self.assertTrue(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
os.unlink(_fname + '.dir')
|
|
|
|
for value in ('c', 'n'):
|
|
with dumbdbm.open(_fname, value) as f:
|
|
f['key'] = 'value'
|
|
self.assertTrue(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
self.assertTrue(os.path.exists(_fname + '.bak'))
|
|
os.unlink(_fname + '.dir')
|
|
os.unlink(_fname + '.bak')
|
|
|
|
def test_sync_empty_unmodified(self):
|
|
with dumbdbm.open(_fname, 'n') as f:
|
|
pass
|
|
os.unlink(_fname + '.dir')
|
|
for value in ('c', 'n'):
|
|
with dumbdbm.open(_fname, value) as f:
|
|
self.assertTrue(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
f.sync()
|
|
self.assertTrue(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
os.unlink(_fname + '.dir')
|
|
f.sync()
|
|
self.assertFalse(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
self.assertFalse(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
|
|
def test_sync_nonempty_unmodified(self):
|
|
with dumbdbm.open(_fname, 'n') as f:
|
|
pass
|
|
os.unlink(_fname + '.dir')
|
|
for value in ('c', 'n'):
|
|
with dumbdbm.open(_fname, value) as f:
|
|
f['key'] = 'value'
|
|
self.assertTrue(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
f.sync()
|
|
self.assertTrue(os.path.exists(_fname + '.dir'))
|
|
self.assertTrue(os.path.exists(_fname + '.bak'))
|
|
os.unlink(_fname + '.dir')
|
|
os.unlink(_fname + '.bak')
|
|
f.sync()
|
|
self.assertFalse(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
self.assertFalse(os.path.exists(_fname + '.dir'))
|
|
self.assertFalse(os.path.exists(_fname + '.bak'))
|
|
|
|
def test_invalid_flag(self):
|
|
for flag in ('x', 'rf', None):
|
|
with self.assertRaisesRegex(ValueError,
|
|
"Flag must be one of "
|
|
"'r', 'w', 'c', or 'n'"):
|
|
dumbdbm.open(_fname, flag)
|
|
|
|
@os_helper.skip_unless_working_chmod
|
|
def test_readonly_files(self):
|
|
with os_helper.temp_dir() as dir:
|
|
fname = os.path.join(dir, 'db')
|
|
with dumbdbm.open(fname, 'n') as f:
|
|
self.assertEqual(list(f.keys()), [])
|
|
for key in self._dict:
|
|
f[key] = self._dict[key]
|
|
os.chmod(fname + ".dir", stat.S_IRUSR)
|
|
os.chmod(fname + ".dat", stat.S_IRUSR)
|
|
os.chmod(dir, stat.S_IRUSR|stat.S_IXUSR)
|
|
with dumbdbm.open(fname, 'r') as f:
|
|
self.assertEqual(sorted(f.keys()), sorted(self._dict))
|
|
f.close() # don't write
|
|
|
|
@unittest.skipUnless(os_helper.TESTFN_NONASCII,
|
|
'requires OS support of non-ASCII encodings')
|
|
def test_nonascii_filename(self):
|
|
filename = os_helper.TESTFN_NONASCII
|
|
for suffix in ['.dir', '.dat', '.bak']:
|
|
self.addCleanup(os_helper.unlink, filename + suffix)
|
|
with dumbdbm.open(filename, 'c') as db:
|
|
db[b'key'] = b'value'
|
|
self.assertTrue(os.path.exists(filename + '.dat'))
|
|
self.assertTrue(os.path.exists(filename + '.dir'))
|
|
with dumbdbm.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_open_with_pathlib_path(self):
|
|
dumbdbm.open(os_helper.FakePath(_fname), "c").close()
|
|
|
|
def test_open_with_bytes_path(self):
|
|
dumbdbm.open(os.fsencode(_fname), "c").close()
|
|
|
|
def test_open_with_pathlib_bytes_path(self):
|
|
dumbdbm.open(os_helper.FakePath(os.fsencode(_fname)), "c").close()
|
|
|
|
def tearDown(self):
|
|
_delete_files()
|
|
|
|
def setUp(self):
|
|
_delete_files()
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|