213 lines
6.4 KiB
Python
213 lines
6.4 KiB
Python
"""Test script for the dbm.open function based on testdumbdbm.py"""
|
|
|
|
import unittest
|
|
import glob
|
|
import test.support
|
|
|
|
# Skip tests if dbm module doesn't exist.
|
|
dbm = test.support.import_module('dbm')
|
|
|
|
try:
|
|
from dbm import ndbm
|
|
except ImportError:
|
|
ndbm = None
|
|
|
|
_fname = test.support.TESTFN
|
|
|
|
#
|
|
# Iterates over every database module supported by dbm currently available,
|
|
# setting dbm to use each in turn, and yielding that module
|
|
#
|
|
def dbm_iterator():
|
|
for name in dbm._names:
|
|
try:
|
|
mod = __import__(name, fromlist=['open'])
|
|
except ImportError:
|
|
continue
|
|
dbm._modules[name] = mod
|
|
yield mod
|
|
|
|
#
|
|
# Clean up all scratch databases we might have created during testing
|
|
#
|
|
def delete_files():
|
|
# we don't know the precise name the underlying database uses
|
|
# so we use glob to locate all names
|
|
for f in glob.glob(_fname + "*"):
|
|
test.support.unlink(f)
|
|
|
|
|
|
class AnyDBMTestCase:
|
|
_dict = {'a': b'Python:',
|
|
'b': b'Programming',
|
|
'c': b'the',
|
|
'd': b'way',
|
|
'f': b'Guido',
|
|
'g': b'intended',
|
|
}
|
|
|
|
def init_db(self):
|
|
f = dbm.open(_fname, 'n')
|
|
for k in self._dict:
|
|
f[k.encode("ascii")] = self._dict[k]
|
|
f.close()
|
|
|
|
def keys_helper(self, f):
|
|
keys = sorted(k.decode("ascii") for k in f.keys())
|
|
dkeys = sorted(self._dict.keys())
|
|
self.assertEqual(keys, dkeys)
|
|
return keys
|
|
|
|
def test_error(self):
|
|
self.assertTrue(issubclass(self.module.error, OSError))
|
|
|
|
def test_anydbm_not_existing(self):
|
|
self.assertRaises(dbm.error, dbm.open, _fname)
|
|
|
|
def test_anydbm_creation(self):
|
|
f = dbm.open(_fname, 'c')
|
|
self.assertEqual(list(f.keys()), [])
|
|
for key in self._dict:
|
|
f[key.encode("ascii")] = self._dict[key]
|
|
self.read_helper(f)
|
|
f.close()
|
|
|
|
def test_anydbm_creation_n_file_exists_with_invalid_contents(self):
|
|
# create an empty file
|
|
test.support.create_empty_file(_fname)
|
|
with dbm.open(_fname, 'n') as f:
|
|
self.assertEqual(len(f), 0)
|
|
|
|
def test_anydbm_modification(self):
|
|
self.init_db()
|
|
f = dbm.open(_fname, 'c')
|
|
self._dict['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')
|
|
f.close()
|
|
|
|
def test_anydbm_read(self):
|
|
self.init_db()
|
|
f = dbm.open(_fname, 'r')
|
|
self.read_helper(f)
|
|
# get() works as in the dict interface
|
|
self.assertEqual(f.get(b'a'), self._dict['a'])
|
|
self.assertEqual(f.get(b'xxx', b'foo'), b'foo')
|
|
self.assertIsNone(f.get(b'xxx'))
|
|
with self.assertRaises(KeyError):
|
|
f[b'xxx']
|
|
f.close()
|
|
|
|
def test_anydbm_keys(self):
|
|
self.init_db()
|
|
f = dbm.open(_fname, 'r')
|
|
keys = self.keys_helper(f)
|
|
f.close()
|
|
|
|
def test_empty_value(self):
|
|
if getattr(dbm._defaultmod, 'library', None) == 'Berkeley DB':
|
|
self.skipTest("Berkeley DB doesn't distinguish the empty value "
|
|
"from the absent one")
|
|
f = dbm.open(_fname, 'c')
|
|
self.assertEqual(f.keys(), [])
|
|
f[b'empty'] = b''
|
|
self.assertEqual(f.keys(), [b'empty'])
|
|
self.assertIn(b'empty', f)
|
|
self.assertEqual(f[b'empty'], b'')
|
|
self.assertEqual(f.get(b'empty'), b'')
|
|
self.assertEqual(f.setdefault(b'empty'), b'')
|
|
f.close()
|
|
|
|
def test_anydbm_access(self):
|
|
self.init_db()
|
|
f = dbm.open(_fname, 'r')
|
|
key = "a".encode("ascii")
|
|
self.assertIn(key, f)
|
|
assert(f[key] == b"Python:")
|
|
f.close()
|
|
|
|
def read_helper(self, f):
|
|
keys = self.keys_helper(f)
|
|
for key in self._dict:
|
|
self.assertEqual(self._dict[key], f[key.encode("ascii")])
|
|
|
|
def tearDown(self):
|
|
delete_files()
|
|
|
|
def setUp(self):
|
|
dbm._defaultmod = self.module
|
|
delete_files()
|
|
|
|
|
|
class WhichDBTestCase(unittest.TestCase):
|
|
def test_whichdb(self):
|
|
for module in dbm_iterator():
|
|
# Check whether whichdb correctly guesses module name
|
|
# for databases opened with "module" module.
|
|
# Try with empty files first
|
|
name = module.__name__
|
|
if name == 'dbm.dumb':
|
|
continue # whichdb can't support dbm.dumb
|
|
delete_files()
|
|
f = module.open(_fname, 'c')
|
|
f.close()
|
|
self.assertEqual(name, self.dbm.whichdb(_fname))
|
|
# Now add a key
|
|
f = module.open(_fname, 'w')
|
|
f[b"1"] = b"1"
|
|
# and test that we can find it
|
|
self.assertIn(b"1", f)
|
|
# and read it
|
|
self.assertTrue(f[b"1"] == b"1")
|
|
f.close()
|
|
self.assertEqual(name, self.dbm.whichdb(_fname))
|
|
|
|
@unittest.skipUnless(ndbm, reason='Test requires ndbm')
|
|
def test_whichdb_ndbm(self):
|
|
# Issue 17198: check that ndbm which is referenced in whichdb is defined
|
|
db_file = '{}_ndbm.db'.format(_fname)
|
|
with open(db_file, 'w'):
|
|
self.addCleanup(test.support.unlink, db_file)
|
|
self.assertIsNone(self.dbm.whichdb(db_file[:-3]))
|
|
|
|
def tearDown(self):
|
|
delete_files()
|
|
|
|
def setUp(self):
|
|
delete_files()
|
|
self.filename = test.support.TESTFN
|
|
self.d = dbm.open(self.filename, 'c')
|
|
self.d.close()
|
|
self.dbm = test.support.import_fresh_module('dbm')
|
|
|
|
def test_keys(self):
|
|
self.d = dbm.open(self.filename, 'c')
|
|
self.assertEqual(self.d.keys(), [])
|
|
a = [(b'a', b'b'), (b'12345678910', b'019237410982340912840198242')]
|
|
for k, v in a:
|
|
self.d[k] = v
|
|
self.assertEqual(sorted(self.d.keys()), sorted(k for (k, v) in a))
|
|
for k, v in a:
|
|
self.assertIn(k, self.d)
|
|
self.assertEqual(self.d[k], v)
|
|
self.assertNotIn(b'xxx', self.d)
|
|
self.assertRaises(KeyError, lambda: self.d[b'xxx'])
|
|
self.d.close()
|
|
|
|
|
|
def load_tests(loader, tests, pattern):
|
|
classes = []
|
|
for mod in dbm_iterator():
|
|
classes.append(type("TestCase-" + mod.__name__,
|
|
(AnyDBMTestCase, unittest.TestCase),
|
|
{'module': mod}))
|
|
suites = [unittest.makeSuite(c) for c in classes]
|
|
|
|
tests.addTests(suites)
|
|
return tests
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|