cpython/Lib/bsddb/test/test_recno.py
Christian Heimes 23daade028 Merged revisions 61038,61042-61045,61047,61049-61053,61055-61057 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r61049 | christian.heimes | 2008-02-24 13:26:16 +0100 (Sun, 24 Feb 2008) | 1 line

  Use PY_FORMAT_SIZE_T instead of z for string formatting. Thanks Neal.
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  r61051 | mark.dickinson | 2008-02-24 19:12:36 +0100 (Sun, 24 Feb 2008) | 2 lines

  Remove duplicate 'import re' in decimal.py
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  r61052 | neal.norwitz | 2008-02-24 19:47:03 +0100 (Sun, 24 Feb 2008) | 11 lines

  Create a db_home directory with a unique name so multiple users can
  run the test simultaneously.  The simplest thing I found that worked
  on both Windows and Unix was to use the PID.  It's unique so should be
  sufficient.  This should prevent many of the spurious failures of
  the automated tests since they run as different users.

  Also cleanup the directory consistenly in the tearDown methods.

  It would be nice if someone ensured that the directories are always
  created with a consistent name.
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  r61057 | christian.heimes | 2008-02-24 23:48:05 +0100 (Sun, 24 Feb 2008) | 2 lines

  Added dependency rules for Objects/stringlib/*.h
  stringobject, unicodeobject and the two formatters are rebuild whenever a header files changes
........
2008-02-25 12:39:23 +00:00

298 lines
7.6 KiB
Python

"""TestCases for exercising a Recno DB.
"""
import os
import shutil
import sys
import errno
import tempfile
from pprint import pprint
import unittest
from bsddb.test.test_all import verbose
try:
# For Pythons w/distutils pybsddb
from bsddb3 import db
except ImportError:
# For Python 2.3
from bsddb import db
letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
#----------------------------------------------------------------------
class SimpleRecnoTestCase(unittest.TestCase):
def setUp(self):
self.filename = tempfile.mktemp()
self.homeDir = None
def tearDown(self):
from test import test_support
test_support.unlink(self.filename)
if self.homeDir:
test_support.rmtree(self.homeDir)
def test01_basic(self):
d = db.DB()
get_returns_none = d.set_get_returns_none(2)
d.set_get_returns_none(get_returns_none)
d.open(self.filename, db.DB_RECNO, db.DB_CREATE)
for x in letters:
recno = d.append(x.encode('ascii') * 60)
assert type(recno) == type(0)
assert recno >= 1
if verbose:
print(recno, end=' ')
if verbose: print()
stat = d.stat()
if verbose:
pprint(stat)
for recno in range(1, len(d)+1):
data = d[recno]
if verbose:
print(data)
assert type(data) == bytes
assert data == d.get(recno)
try:
data = d[0] # This should raise a KeyError!?!?!
except db.DBInvalidArgError as val:
assert val.args[0] == db.EINVAL
if verbose: print(val)
else:
self.fail("expected exception")
# test that has_key raises DB exceptions (fixed in pybsddb 4.3.2)
try:
d.has_key(0)
except db.DBError as val:
pass
else:
self.fail("has_key did not raise a proper exception")
try:
data = d[100]
except KeyError:
pass
else:
self.fail("expected exception")
try:
data = d.get(100)
except db.DBNotFoundError as val:
if get_returns_none:
self.fail("unexpected exception")
else:
assert data == None
keys = d.keys()
if verbose:
print(keys)
assert type(keys) == type([])
assert type(keys[0]) == type(123)
assert len(keys) == len(d)
items = d.items()
if verbose:
pprint(items)
assert type(items) == type([])
assert type(items[0]) == type(())
assert len(items[0]) == 2
assert type(items[0][0]) == type(123)
assert type(items[0][1]) == bytes
assert len(items) == len(d)
assert d.has_key(25)
del d[25]
assert not d.has_key(25)
d.delete(13)
assert not d.has_key(13)
data = d.get_both(26, b"z" * 60)
assert data == b"z" * 60, 'was %r' % data
if verbose:
print(data)
fd = d.fd()
if verbose:
print(fd)
c = d.cursor()
rec = c.first()
while rec:
if verbose:
print(rec)
rec = c.next()
c.set(50)
rec = c.current()
if verbose:
print(rec)
c.put(-1, b"a replacement record", db.DB_CURRENT)
c.set(50)
rec = c.current()
assert rec == (50, b"a replacement record")
if verbose:
print(rec)
rec = c.set_range(30)
if verbose:
print(rec)
# test that non-existant key lookups work (and that
# DBC_set_range doesn't have a memleak under valgrind)
rec = c.set_range(999999)
assert rec == None
if verbose:
print(rec)
c.close()
d.close()
d = db.DB()
d.open(self.filename)
c = d.cursor()
# put a record beyond the consecutive end of the recno's
d[100] = b"way out there"
assert d[100] == b"way out there"
try:
data = d[99]
except KeyError:
pass
else:
self.fail("expected exception")
try:
d.get(99)
except db.DBKeyEmptyError as val:
if get_returns_none:
self.fail("unexpected DBKeyEmptyError exception")
else:
assert val.args[0] == db.DB_KEYEMPTY
if verbose: print(val)
else:
if not get_returns_none:
self.fail("expected exception")
rec = c.set(40)
while rec:
if verbose:
print(rec)
rec = c.next()
c.close()
d.close()
def test02_WithSource(self):
"""
A Recno file that is given a "backing source file" is essentially a
simple ASCII file. Normally each record is delimited by \n and so is
just a line in the file, but you can set a different record delimiter
if needed.
"""
homeDir = os.path.join(tempfile.gettempdir(), 'db_home%d'%os.getpid())
self.homeDir = homeDir
source = os.path.join(homeDir, 'test_recno.txt')
if not os.path.isdir(homeDir):
os.mkdir(homeDir)
f = open(source, 'w') # create the file
f.close()
d = db.DB()
# This is the default value, just checking if both int
d.set_re_delim(0x0A)
d.set_re_delim('\n') # and char can be used...
d.set_re_source(source)
d.open(self.filename, db.DB_RECNO, db.DB_CREATE)
data = "The quick brown fox jumped over the lazy dog".split()
for datum in data:
d.append(datum.encode('ascii'))
d.sync()
d.close()
# get the text from the backing source
text = open(source, 'r').read()
text = text.strip()
if verbose:
print(text)
print(data)
print(text.split('\n'))
assert text.split('\n') == data
# open as a DB again
d = db.DB()
d.set_re_source(source)
d.open(self.filename, db.DB_RECNO)
d[3] = b'reddish-brown'
d[8] = b'comatose'
d.sync()
d.close()
text = open(source, 'r').read()
text = text.strip()
if verbose:
print(text)
print(text.split('\n'))
assert text.split('\n') == \
"The quick reddish-brown fox jumped over the comatose dog".split()
def test03_FixedLength(self):
d = db.DB()
d.set_re_len(40) # fixed length records, 40 bytes long
d.set_re_pad('-') # sets the pad character...
d.set_re_pad(45) # ...test both int and char
d.open(self.filename, db.DB_RECNO, db.DB_CREATE)
for x in letters:
d.append(x.encode('ascii') * 35) # These will be padded
d.append(b'.' * 40) # this one will be exact
try: # this one will fail
d.append(b'bad' * 20)
except db.DBInvalidArgError as val:
assert val.args[0] == db.EINVAL
if verbose: print(val)
else:
self.fail("expected exception")
c = d.cursor()
rec = c.first()
while rec:
if verbose:
print(rec)
rec = c.next()
c.close()
d.close()
#----------------------------------------------------------------------
def test_suite():
return unittest.makeSuite(SimpleRecnoTestCase)
if __name__ == '__main__':
unittest.main(defaultTest='test_suite')