| 1 | """TestCases for exercising a Recno DB. |
| 2 | """ |
| 3 | |
| 4 | import os |
| 5 | import sys |
| 6 | import errno |
| 7 | import tempfile |
| 8 | from pprint import pprint |
| 9 | import unittest |
| 10 | |
| 11 | from test_all import verbose |
| 12 | |
| 13 | try: |
| 14 | # For Pythons w/distutils pybsddb |
| 15 | from bsddb3 import db |
| 16 | except ImportError: |
| 17 | # For Python 2.3 |
| 18 | from bsddb import db |
| 19 | |
| 20 | letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' |
| 21 | |
| 22 | |
| 23 | #---------------------------------------------------------------------- |
| 24 | |
| 25 | class SimpleRecnoTestCase(unittest.TestCase): |
| 26 | def setUp(self): |
| 27 | self.filename = tempfile.mktemp() |
| 28 | |
| 29 | def tearDown(self): |
| 30 | try: |
| 31 | os.remove(self.filename) |
| 32 | except OSError, e: |
| 33 | if e.errno <> errno.EEXIST: raise |
| 34 | |
| 35 | def test01_basic(self): |
| 36 | d = db.DB() |
| 37 | d.open(self.filename, db.DB_RECNO, db.DB_CREATE) |
| 38 | |
| 39 | for x in letters: |
| 40 | recno = d.append(x * 60) |
| 41 | assert type(recno) == type(0) |
| 42 | assert recno >= 1 |
| 43 | if verbose: |
| 44 | print recno, |
| 45 | |
| 46 | if verbose: print |
| 47 | |
| 48 | stat = d.stat() |
| 49 | if verbose: |
| 50 | pprint(stat) |
| 51 | |
| 52 | for recno in range(1, len(d)+1): |
| 53 | data = d[recno] |
| 54 | if verbose: |
| 55 | print data |
| 56 | |
| 57 | assert type(data) == type("") |
| 58 | assert data == d.get(recno) |
| 59 | |
| 60 | try: |
| 61 | data = d[0] # This should raise a KeyError!?!?! |
| 62 | except db.DBInvalidArgError, val: |
| 63 | assert val[0] == db.EINVAL |
| 64 | if verbose: print val |
| 65 | else: |
| 66 | self.fail("expected exception") |
| 67 | |
| 68 | try: |
| 69 | data = d[100] |
| 70 | except KeyError: |
| 71 | pass |
| 72 | else: |
| 73 | self.fail("expected exception") |
| 74 | |
| 75 | data = d.get(100) |
| 76 | assert data == None |
| 77 | |
| 78 | keys = d.keys() |
| 79 | if verbose: |
| 80 | print keys |
| 81 | assert type(keys) == type([]) |
| 82 | assert type(keys[0]) == type(123) |
| 83 | assert len(keys) == len(d) |
| 84 | |
| 85 | items = d.items() |
| 86 | if verbose: |
| 87 | pprint(items) |
| 88 | assert type(items) == type([]) |
| 89 | assert type(items[0]) == type(()) |
| 90 | assert len(items[0]) == 2 |
| 91 | assert type(items[0][0]) == type(123) |
| 92 | assert type(items[0][1]) == type("") |
| 93 | assert len(items) == len(d) |
| 94 | |
| 95 | assert d.has_key(25) |
| 96 | |
| 97 | del d[25] |
| 98 | assert not d.has_key(25) |
| 99 | |
| 100 | d.delete(13) |
| 101 | assert not d.has_key(13) |
| 102 | |
| 103 | data = d.get_both(26, "z" * 60) |
| 104 | assert data == "z" * 60 |
| 105 | if verbose: |
| 106 | print data |
| 107 | |
| 108 | fd = d.fd() |
| 109 | if verbose: |
| 110 | print fd |
| 111 | |
| 112 | c = d.cursor() |
| 113 | rec = c.first() |
| 114 | while rec: |
| 115 | if verbose: |
| 116 | print rec |
| 117 | rec = c.next() |
| 118 | |
| 119 | c.set(50) |
| 120 | rec = c.current() |
| 121 | if verbose: |
| 122 | print rec |
| 123 | |
| 124 | c.put(-1, "a replacement record", db.DB_CURRENT) |
| 125 | |
| 126 | c.set(50) |
| 127 | rec = c.current() |
| 128 | assert rec == (50, "a replacement record") |
| 129 | if verbose: |
| 130 | print rec |
| 131 | |
| 132 | rec = c.set_range(30) |
| 133 | if verbose: |
| 134 | print rec |
| 135 | |
| 136 | # test that non-existant key lookups work (and that |
| 137 | # DBC_set_range doesn't have a memleak under valgrind) |
| 138 | rec = c.set_range(999999) |
| 139 | assert rec == None |
| 140 | if verbose: |
| 141 | print rec |
| 142 | |
| 143 | c.close() |
| 144 | d.close() |
| 145 | |
| 146 | d = db.DB() |
| 147 | d.open(self.filename) |
| 148 | c = d.cursor() |
| 149 | |
| 150 | # put a record beyond the consecutive end of the recno's |
| 151 | d[100] = "way out there" |
| 152 | assert d[100] == "way out there" |
| 153 | |
| 154 | try: |
| 155 | data = d[99] |
| 156 | except KeyError: |
| 157 | pass |
| 158 | else: |
| 159 | self.fail("expected exception") |
| 160 | |
| 161 | try: |
| 162 | d.get(99) |
| 163 | except db.DBKeyEmptyError, val: |
| 164 | assert val[0] == db.DB_KEYEMPTY |
| 165 | if verbose: print val |
| 166 | else: |
| 167 | self.fail("expected exception") |
| 168 | |
| 169 | rec = c.set(40) |
| 170 | while rec: |
| 171 | if verbose: |
| 172 | print rec |
| 173 | rec = c.next() |
| 174 | |
| 175 | c.close() |
| 176 | d.close() |
| 177 | |
| 178 | def test02_WithSource(self): |
| 179 | """ |
| 180 | A Recno file that is given a "backing source file" is essentially a |
| 181 | simple ASCII file. Normally each record is delimited by \n and so is |
| 182 | just a line in the file, but you can set a different record delimiter |
| 183 | if needed. |
| 184 | """ |
| 185 | source = os.path.join(os.path.dirname(sys.argv[0]), |
| 186 | 'db_home/test_recno.txt') |
| 187 | if not os.path.isdir('db_home'): |
| 188 | os.mkdir('db_home') |
| 189 | f = open(source, 'w') # create the file |
| 190 | f.close() |
| 191 | |
| 192 | d = db.DB() |
| 193 | # This is the default value, just checking if both int |
| 194 | d.set_re_delim(0x0A) |
| 195 | d.set_re_delim('\n') # and char can be used... |
| 196 | d.set_re_source(source) |
| 197 | d.open(self.filename, db.DB_RECNO, db.DB_CREATE) |
| 198 | |
| 199 | data = "The quick brown fox jumped over the lazy dog".split() |
| 200 | for datum in data: |
| 201 | d.append(datum) |
| 202 | d.sync() |
| 203 | d.close() |
| 204 | |
| 205 | # get the text from the backing source |
| 206 | text = open(source, 'r').read() |
| 207 | text = text.strip() |
| 208 | if verbose: |
| 209 | print text |
| 210 | print data |
| 211 | print text.split('\n') |
| 212 | |
| 213 | assert text.split('\n') == data |
| 214 | |
| 215 | # open as a DB again |
| 216 | d = db.DB() |
| 217 | d.set_re_source(source) |
| 218 | d.open(self.filename, db.DB_RECNO) |
| 219 | |
| 220 | d[3] = 'reddish-brown' |
| 221 | d[8] = 'comatose' |
| 222 | |
| 223 | d.sync() |
| 224 | d.close() |
| 225 | |
| 226 | text = open(source, 'r').read() |
| 227 | text = text.strip() |
| 228 | if verbose: |
| 229 | print text |
| 230 | print text.split('\n') |
| 231 | |
| 232 | assert text.split('\n') == \ |
| 233 | "The quick reddish-brown fox jumped over the comatose dog".split() |
| 234 | |
| 235 | def test03_FixedLength(self): |
| 236 | d = db.DB() |
| 237 | d.set_re_len(40) # fixed length records, 40 bytes long |
| 238 | d.set_re_pad('-') # sets the pad character... |
| 239 | d.set_re_pad(45) # ...test both int and char |
| 240 | d.open(self.filename, db.DB_RECNO, db.DB_CREATE) |
| 241 | |
| 242 | for x in letters: |
| 243 | d.append(x * 35) # These will be padded |
| 244 | |
| 245 | d.append('.' * 40) # this one will be exact |
| 246 | |
| 247 | try: # this one will fail |
| 248 | d.append('bad' * 20) |
| 249 | except db.DBInvalidArgError, val: |
| 250 | assert val[0] == db.EINVAL |
| 251 | if verbose: print val |
| 252 | else: |
| 253 | self.fail("expected exception") |
| 254 | |
| 255 | c = d.cursor() |
| 256 | rec = c.first() |
| 257 | while rec: |
| 258 | if verbose: |
| 259 | print rec |
| 260 | rec = c.next() |
| 261 | |
| 262 | c.close() |
| 263 | d.close() |
| 264 | |
| 265 | |
| 266 | #---------------------------------------------------------------------- |
| 267 | |
| 268 | |
| 269 | def test_suite(): |
| 270 | return unittest.makeSuite(SimpleRecnoTestCase) |
| 271 | |
| 272 | |
| 273 | if __name__ == '__main__': |
| 274 | unittest.main(defaultTest='test_suite') |