mirror of https://github.com/python/cpython
174 lines
4.5 KiB
Python
174 lines
4.5 KiB
Python
#! /usr/bin/env python
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"""Test script for the dumbdbm module
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Original by Roger E. Masse
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"""
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import os
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import unittest
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import dumbdbm
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from test import test_support
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_fname = test_support.TESTFN
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def _delete_files():
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for ext in [".dir", ".dat", ".bak"]:
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try:
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os.unlink(_fname + ext)
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except OSError:
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pass
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class DumbDBMTestCase(unittest.TestCase):
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_dict = {'0': '',
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'a': 'Python:',
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'b': 'Programming',
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'c': 'the',
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'd': 'way',
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'f': 'Guido',
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'g': 'intended'
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}
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def __init__(self, *args):
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unittest.TestCase.__init__(self, *args)
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def test_dumbdbm_creation(self):
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f = dumbdbm.open(_fname, 'c')
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self.assertEqual(f.keys(), [])
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for key in self._dict:
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f[key] = self._dict[key]
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self.read_helper(f)
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f.close()
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def test_dumbdbm_creation_mode(self):
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# On platforms without chmod, don't do anything.
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if not (hasattr(os, 'chmod') and hasattr(os, 'umask')):
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return
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try:
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old_umask = os.umask(0002)
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f = dumbdbm.open(_fname, 'c', 0637)
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f.close()
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finally:
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os.umask(old_umask)
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import stat
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st = os.stat(_fname + '.dat')
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self.assertEqual(stat.S_IMODE(st.st_mode), 0635)
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st = os.stat(_fname + '.dir')
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self.assertEqual(stat.S_IMODE(st.st_mode), 0635)
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def test_close_twice(self):
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f = dumbdbm.open(_fname)
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f['a'] = 'b'
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self.assertEqual(f['a'], 'b')
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f.close()
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f.close()
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def test_dumbdbm_modification(self):
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self.init_db()
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f = dumbdbm.open(_fname, 'w')
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self._dict['g'] = f['g'] = "indented"
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self.read_helper(f)
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f.close()
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def test_dumbdbm_read(self):
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self.init_db()
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f = dumbdbm.open(_fname, 'r')
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self.read_helper(f)
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f.close()
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def test_dumbdbm_keys(self):
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self.init_db()
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f = dumbdbm.open(_fname)
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keys = self.keys_helper(f)
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f.close()
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def test_write_write_read(self):
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# test for bug #482460
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f = dumbdbm.open(_fname)
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f['1'] = 'hello'
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f['1'] = 'hello2'
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f.close()
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f = dumbdbm.open(_fname)
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self.assertEqual(f['1'], 'hello2')
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f.close()
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def test_line_endings(self):
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# test for bug #1172763: dumbdbm would die if the line endings
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# weren't what was expected.
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f = dumbdbm.open(_fname)
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f['1'] = 'hello'
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f['2'] = 'hello2'
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f.close()
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# Mangle the file by adding \r before each newline
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data = open(_fname + '.dir').read()
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data = data.replace('\n', '\r\n')
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open(_fname + '.dir', 'wb').write(data)
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f = dumbdbm.open(_fname)
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self.assertEqual(f['1'], 'hello')
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self.assertEqual(f['2'], 'hello2')
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def read_helper(self, f):
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keys = self.keys_helper(f)
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for key in self._dict:
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self.assertEqual(self._dict[key], f[key])
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def init_db(self):
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f = dumbdbm.open(_fname, 'w')
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for k in self._dict:
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f[k] = self._dict[k]
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f.close()
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def keys_helper(self, f):
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keys = f.keys()
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keys.sort()
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dkeys = self._dict.keys()
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dkeys.sort()
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self.assertEqual(keys, dkeys)
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return keys
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# Perform randomized operations. This doesn't make assumptions about
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# what *might* fail.
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def test_random(self):
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import random
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d = {} # mirror the database
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for dummy in range(5):
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f = dumbdbm.open(_fname)
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for dummy in range(100):
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k = random.choice('abcdefghijklm')
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if random.random() < 0.2:
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if k in d:
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del d[k]
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del f[k]
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else:
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v = random.choice('abc') * random.randrange(10000)
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d[k] = v
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f[k] = v
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self.assertEqual(f[k], v)
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f.close()
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f = dumbdbm.open(_fname)
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expected = d.items()
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expected.sort()
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got = f.items()
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got.sort()
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self.assertEqual(expected, got)
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f.close()
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def tearDown(self):
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_delete_files()
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def setUp(self):
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_delete_files()
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def test_main():
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try:
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test_support.run_unittest(DumbDBMTestCase)
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finally:
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_delete_files()
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if __name__ == "__main__":
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test_main()
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