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"""Tests exceptions and DB-API exception wrapping."""
import testbase
import sys, unittest
import exceptions as stdlib_exceptions
from sqlalchemy import exceptions as sa_exceptions
from testlib import *
class Error(stdlib_exceptions.StandardError):
"""This class will be old-style on <= 2.4 and new-style on >= 2.5."""
class DatabaseError(Error):
pass
class OperationalError(DatabaseError):
pass
class ProgrammingError(DatabaseError):
def __str__(self):
return "<%s>" % self.bogus
class OutOfSpec(DatabaseError):
pass
class WrapTest(unittest.TestCase):
def test_db_error_normal(self):
try:
raise sa_exceptions.DBAPIError.instance(
'', [], OperationalError())
except sa_exceptions.DBAPIError:
self.assert_(True)
def test_db_error_busted_dbapi(self):
try:
raise sa_exceptions.DBAPIError.instance(
'', [], ProgrammingError())
except sa_exceptions.DBAPIError, e:
self.assert_(True)
self.assert_('Error in str() of DB-API' in e.args[0])
def test_db_error_noncompliant_dbapi(self):
try:
raise sa_exceptions.DBAPIError.instance(
'', [], OutOfSpec())
except sa_exceptions.DBAPIError, e:
self.assert_(e.__class__ is sa_exceptions.DBAPIError)
except OutOfSpec:
self.assert_(False)
# Make sure the DatabaseError recognition logic is limited to
# subclasses of sqlalchemy.exceptions.DBAPIError
try:
raise sa_exceptions.DBAPIError.instance(
'', [], sa_exceptions.AssertionError())
except sa_exceptions.DBAPIError, e:
self.assert_(e.__class__ is sa_exceptions.DBAPIError)
except sa_exceptions.AssertionError:
self.assert_(False)
def test_db_error_keyboard_interrupt(self):
try:
raise sa_exceptions.DBAPIError.instance(
'', [], stdlib_exceptions.KeyboardInterrupt())
except sa_exceptions.DBAPIError:
self.assert_(False)
except stdlib_exceptions.KeyboardInterrupt:
self.assert_(True)
def test_db_error_system_exit(self):
try:
raise sa_exceptions.DBAPIError.instance(
'', [], stdlib_exceptions.SystemExit())
except sa_exceptions.DBAPIError:
self.assert_(False)
except stdlib_exceptions.SystemExit:
self.assert_(True)
if __name__ == "__main__":
testbase.main()
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