| 1 | #! /usr/bin/env python |
| 2 | """Test script for the dumbdbm module |
| 3 | Original by Roger E. Masse |
| 4 | """ |
| 5 | |
| 6 | import os |
| 7 | import unittest |
| 8 | import dumbdbm |
| 9 | from test import test_support |
| 10 | |
| 11 | _fname = test_support.TESTFN |
| 12 | |
| 13 | def _delete_files(): |
| 14 | for ext in [".dir", ".dat", ".bak"]: |
| 15 | try: |
| 16 | os.unlink(_fname + ext) |
| 17 | except OSError: |
| 18 | pass |
| 19 | |
| 20 | class DumbDBMTestCase(unittest.TestCase): |
| 21 | _dict = {'0': '', |
| 22 | 'a': 'Python:', |
| 23 | 'b': 'Programming', |
| 24 | 'c': 'the', |
| 25 | 'd': 'way', |
| 26 | 'f': 'Guido', |
| 27 | 'g': 'intended' |
| 28 | } |
| 29 | |
| 30 | def __init__(self, *args): |
| 31 | unittest.TestCase.__init__(self, *args) |
| 32 | |
| 33 | def test_dumbdbm_creation(self): |
| 34 | f = dumbdbm.open(_fname, 'c') |
| 35 | self.assertEqual(f.keys(), []) |
| 36 | for key in self._dict: |
| 37 | f[key] = self._dict[key] |
| 38 | self.read_helper(f) |
| 39 | f.close() |
| 40 | |
| 41 | def test_close_twice(self): |
| 42 | f = dumbdbm.open(_fname) |
| 43 | f['a'] = 'b' |
| 44 | self.assertEqual(f['a'], 'b') |
| 45 | f.close() |
| 46 | f.close() |
| 47 | |
| 48 | def test_dumbdbm_modification(self): |
| 49 | self.init_db() |
| 50 | f = dumbdbm.open(_fname, 'w') |
| 51 | self._dict['g'] = f['g'] = "indented" |
| 52 | self.read_helper(f) |
| 53 | f.close() |
| 54 | |
| 55 | def test_dumbdbm_read(self): |
| 56 | self.init_db() |
| 57 | f = dumbdbm.open(_fname, 'r') |
| 58 | self.read_helper(f) |
| 59 | f.close() |
| 60 | |
| 61 | def test_dumbdbm_keys(self): |
| 62 | self.init_db() |
| 63 | f = dumbdbm.open(_fname) |
| 64 | keys = self.keys_helper(f) |
| 65 | f.close() |
| 66 | |
| 67 | def test_write_write_read(self): |
| 68 | # test for bug #482460 |
| 69 | f = dumbdbm.open(_fname) |
| 70 | f['1'] = 'hello' |
| 71 | f['1'] = 'hello2' |
| 72 | f.close() |
| 73 | f = dumbdbm.open(_fname) |
| 74 | self.assertEqual(f['1'], 'hello2') |
| 75 | f.close() |
| 76 | |
| 77 | def test_line_endings(self): |
| 78 | # test for bug #1172763: dumbdbm would die if the line endings |
| 79 | # weren't what was expected. |
| 80 | f = dumbdbm.open(_fname) |
| 81 | f['1'] = 'hello' |
| 82 | f['2'] = 'hello2' |
| 83 | f.close() |
| 84 | |
| 85 | # Mangle the file by adding \r before each newline |
| 86 | data = open(_fname + '.dir').read() |
| 87 | data = data.replace('\n', '\r\n') |
| 88 | open(_fname + '.dir', 'wb').write(data) |
| 89 | |
| 90 | f = dumbdbm.open(_fname) |
| 91 | self.assertEqual(f['1'], 'hello') |
| 92 | self.assertEqual(f['2'], 'hello2') |
| 93 | |
| 94 | |
| 95 | def read_helper(self, f): |
| 96 | keys = self.keys_helper(f) |
| 97 | for key in self._dict: |
| 98 | self.assertEqual(self._dict[key], f[key]) |
| 99 | |
| 100 | def init_db(self): |
| 101 | f = dumbdbm.open(_fname, 'w') |
| 102 | for k in self._dict: |
| 103 | f[k] = self._dict[k] |
| 104 | f.close() |
| 105 | |
| 106 | def keys_helper(self, f): |
| 107 | keys = f.keys() |
| 108 | keys.sort() |
| 109 | dkeys = self._dict.keys() |
| 110 | dkeys.sort() |
| 111 | self.assertEqual(keys, dkeys) |
| 112 | return keys |
| 113 | |
| 114 | # Perform randomized operations. This doesn't make assumptions about |
| 115 | # what *might* fail. |
| 116 | def test_random(self): |
| 117 | import random |
| 118 | d = {} # mirror the database |
| 119 | for dummy in range(5): |
| 120 | f = dumbdbm.open(_fname) |
| 121 | for dummy in range(100): |
| 122 | k = random.choice('abcdefghijklm') |
| 123 | if random.random() < 0.2: |
| 124 | if k in d: |
| 125 | del d[k] |
| 126 | del f[k] |
| 127 | else: |
| 128 | v = random.choice('abc') * random.randrange(10000) |
| 129 | d[k] = v |
| 130 | f[k] = v |
| 131 | self.assertEqual(f[k], v) |
| 132 | f.close() |
| 133 | |
| 134 | f = dumbdbm.open(_fname) |
| 135 | expected = d.items() |
| 136 | expected.sort() |
| 137 | got = f.items() |
| 138 | got.sort() |
| 139 | self.assertEqual(expected, got) |
| 140 | f.close() |
| 141 | |
| 142 | def tearDown(self): |
| 143 | _delete_files() |
| 144 | |
| 145 | def setUp(self): |
| 146 | _delete_files() |
| 147 | |
| 148 | def test_main(): |
| 149 | try: |
| 150 | test_support.run_unittest(DumbDBMTestCase) |
| 151 | finally: |
| 152 | _delete_files() |
| 153 | |
| 154 | if __name__ == "__main__": |
| 155 | test_main() |