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#! /usr/bin/env python
"""Test script for the anydbm module
based on testdumbdbm.py
"""
import os
import unittest
import anydbm
import glob
from test import test_support
_fname = test_support.TESTFN
_all_modules = []
for _name in anydbm._names:
try:
_module = __import__(_name)
except ImportError:
continue
_all_modules.append(_module)
#
# Iterates over every database module supported by anydbm
# currently available, setting anydbm to use each in turn,
# and yielding that module
#
def dbm_iterator():
old_default = anydbm._defaultmod
for module in _all_modules:
anydbm._defaultmod = module
yield module
anydbm._defaultmod = old_default
#
# 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 + "*"):
try:
os.unlink(f)
except OSError:
pass
class AnyDBMTestCase(unittest.TestCase):
_dict = {'0': b'',
'a': b'Python:',
'b': b'Programming',
'c': b'the',
'd': b'way',
'f': b'Guido',
'g': b'intended',
}
def __init__(self, *args):
unittest.TestCase.__init__(self, *args)
def test_anydbm_creation(self):
f = anydbm.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_modification(self):
self.init_db()
f = anydbm.open(_fname, 'c')
self._dict['g'] = f[b'g'] = b"indented"
self.read_helper(f)
f.close()
def test_anydbm_read(self):
self.init_db()
f = anydbm.open(_fname, 'r')
self.read_helper(f)
f.close()
def test_anydbm_keys(self):
self.init_db()
f = anydbm.open(_fname, 'r')
keys = self.keys_helper(f)
f.close()
def test_anydbm_access(self):
self.init_db()
f = anydbm.open(_fname, 'r')
key = "a".encode("ascii")
assert(key in 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 init_db(self):
f = anydbm.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 tearDown(self):
delete_files()
def setUp(self):
delete_files()
def test_main():
try:
for module in dbm_iterator():
test_support.run_unittest(AnyDBMTestCase)
finally:
delete_files()
if __name__ == "__main__":
test_main()
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