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"""
TestCases for checking set_get_returns_none.
"""
import os, string
import unittest
from test_all import db, verbose, get_new_database_path
#----------------------------------------------------------------------
class GetReturnsNoneTestCase(unittest.TestCase):
def setUp(self):
self.filename = get_new_database_path()
def tearDown(self):
try:
os.remove(self.filename)
except os.error:
pass
def test01_get_returns_none(self):
d = db.DB()
d.open(self.filename, db.DB_BTREE, db.DB_CREATE)
d.set_get_returns_none(1)
for x in string.ascii_letters:
d.put(x, x * 40)
data = d.get('bad key')
self.assertEqual(data, None)
data = d.get(string.ascii_letters[0])
self.assertEqual(data, string.ascii_letters[0]*40)
count = 0
c = d.cursor()
rec = c.first()
while rec:
count = count + 1
rec = c.next()
self.assertEqual(rec, None)
self.assertEqual(count, len(string.ascii_letters))
c.close()
d.close()
def test02_get_raises_exception(self):
d = db.DB()
d.open(self.filename, db.DB_BTREE, db.DB_CREATE)
d.set_get_returns_none(0)
for x in string.ascii_letters:
d.put(x, x * 40)
self.assertRaises(db.DBNotFoundError, d.get, 'bad key')
self.assertRaises(KeyError, d.get, 'bad key')
data = d.get(string.ascii_letters[0])
self.assertEqual(data, string.ascii_letters[0]*40)
count = 0
exceptionHappened = 0
c = d.cursor()
rec = c.first()
while rec:
count = count + 1
try:
rec = c.next()
except db.DBNotFoundError: # end of the records
exceptionHappened = 1
break
self.assertNotEqual(rec, None)
self.assertTrue(exceptionHappened)
self.assertEqual(count, len(string.ascii_letters))
c.close()
d.close()
#----------------------------------------------------------------------
def test_suite():
return unittest.makeSuite(GetReturnsNoneTestCase)
if __name__ == '__main__':
unittest.main(defaultTest='test_suite')