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"""TestCases for exercising a Recno DB.
"""
import os, sys
import errno
from pprint import pprint
import string
import unittest
from test_all import db, test_support, verbose, get_new_environment_path, get_new_database_path
#----------------------------------------------------------------------
class SimpleRecnoTestCase(unittest.TestCase):
if (sys.version_info < (2, 7)) or ((sys.version_info >= (3, 0)) and
(sys.version_info < (3, 2))) :
def assertIsInstance(self, obj, datatype, msg=None) :
return self.assertEqual(type(obj), datatype, msg=msg)
def assertGreaterEqual(self, a, b, msg=None) :
return self.assertGreaterEqual(a, b, msg=msg)
def setUp(self):
self.filename = get_new_database_path()
self.homeDir = None
def tearDown(self):
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 string.ascii_letters:
recno = d.append(x * 60)
self.assertIsInstance(recno, int)
self.assertGreaterEqual(recno, 1)
if verbose:
print recno,
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
self.assertIsInstance(data, str)
self.assertEqual(data, d.get(recno))
try:
data = d[0] # This should raise a KeyError!?!?!
except db.DBInvalidArgError, val:
if sys.version_info < (2, 6) :
self.assertEqual(val[0], db.EINVAL)
else :
self.assertEqual(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, 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, val:
if get_returns_none:
self.fail("unexpected exception")
else:
self.assertEqual(data, None)
keys = d.keys()
if verbose:
print keys
self.assertIsInstance(keys, list)
self.assertIsInstance(keys[0], int)
self.assertEqual(len(keys), len(d))
items = d.items()
if verbose:
pprint(items)
self.assertIsInstance(items, list)
self.assertIsInstance(items[0], tuple)
self.assertEqual(len(items[0]), 2)
self.assertIsInstance(items[0][0], int)
self.assertIsInstance(items[0][1], str)
self.assertEqual(len(items), len(d))
self.assertTrue(d.has_key(25))
del d[25]
self.assertFalse(d.has_key(25))
d.delete(13)
self.assertFalse(d.has_key(13))
data = d.get_both(26, "z" * 60)
self.assertEqual(data, "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, "a replacement record", db.DB_CURRENT)
c.set(50)
rec = c.current()
self.assertEqual(rec, (50, "a replacement record"))
if verbose:
print rec
rec = c.set_range(30)
if verbose:
print rec
# test that non-existent key lookups work (and that
# DBC_set_range doesn't have a memleak under valgrind)
rec = c.set_range(999999)
self.assertEqual(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] = "way out there"
self.assertEqual(d[100], "way out there")
try:
data = d[99]
except KeyError:
pass
else:
self.fail("expected exception")
try:
d.get(99)
except db.DBKeyEmptyError, val:
if get_returns_none:
self.fail("unexpected DBKeyEmptyError exception")
else:
if sys.version_info < (2, 6) :
self.assertEqual(val[0], db.DB_KEYEMPTY)
else :
self.assertEqual(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 = get_new_environment_path()
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)
d.sync()
d.close()
# get the text from the backing source
f = open(source, 'r')
text = f.read()
f.close()
text = text.strip()
if verbose:
print text
print data
print text.split('\n')
self.assertEqual(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] = 'reddish-brown'
d[8] = 'comatose'
d.sync()
d.close()
f = open(source, 'r')
text = f.read()
f.close()
text = text.strip()
if verbose:
print text
print text.split('\n')
self.assertEqual(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 string.ascii_letters:
d.append(x * 35) # These will be padded
d.append('.' * 40) # this one will be exact
try: # this one will fail
d.append('bad' * 20)
except db.DBInvalidArgError, val:
if sys.version_info < (2, 6) :
self.assertEqual(val[0], db.EINVAL)
else :
self.assertEqual(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 test04_get_size_empty(self) :
d = db.DB()
d.open(self.filename, dbtype=db.DB_RECNO, flags=db.DB_CREATE)
row_id = d.append(' ')
self.assertEqual(1, d.get_size(key=row_id))
row_id = d.append('')
self.assertEqual(0, d.get_size(key=row_id))
#----------------------------------------------------------------------
def test_suite():
return unittest.makeSuite(SimpleRecnoTestCase)
if __name__ == '__main__':
unittest.main(defaultTest='test_suite')
|
