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"""Tests exceptions and DB-API exception wrapping."""
from sqlalchemy import exc as sa_exceptions
from sqlalchemy.test import TestBase
# Py3K
#StandardError = BaseException
# Py2K
from exceptions import StandardError, KeyboardInterrupt, SystemExit
# end Py2K
class Error(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(TestBase):
def test_db_error_normal(self):
try:
raise sa_exceptions.DBAPIError.instance('', [],
OperationalError())
except sa_exceptions.DBAPIError:
self.assert_(True)
def test_tostring(self):
try:
raise sa_exceptions.DBAPIError.instance('this is a message'
, None, OperationalError())
except sa_exceptions.DBAPIError, exc:
assert str(exc) \
== "(OperationalError) 'this is a message' None"
def test_tostring_large_dict(self):
try:
raise sa_exceptions.DBAPIError.instance('this is a message'
,
{'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5, 'f': 6, 'g': 7, 'h':
8, 'i': 9, 'j': 10, 'k': 11,
}, OperationalError())
except sa_exceptions.DBAPIError, exc:
assert str(exc).startswith("(OperationalError) 'this is a "
"message' {")
def test_tostring_large_list(self):
try:
raise sa_exceptions.DBAPIError.instance('this is a message',
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,], OperationalError())
except sa_exceptions.DBAPIError, exc:
assert str(exc).startswith("(OperationalError) 'this is a "
"message' [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]")
def test_tostring_large_executemany(self):
try:
raise sa_exceptions.DBAPIError.instance('this is a message',
[{1: 1}, {1: 1}, {1: 1}, {1: 1}, {1: 1}, {1: 1},
{1: 1}, {1:1}, {1: 1}, {1: 1},],
OperationalError())
except sa_exceptions.DBAPIError, exc:
assert str(exc) \
== "(OperationalError) 'this is a message' [{1: 1}, "\
"{1: 1}, {1: 1}, {1: 1}, {1: 1}, {1: 1}, {1: 1}, {1: "\
"1}, {1: 1}, {1: 1}]", str(exc)
try:
raise sa_exceptions.DBAPIError.instance('this is a message', [
{1: 1}, {1: 1}, {1: 1}, {1: 1}, {1: 1}, {1: 1}, {1: 1},
{1:1}, {1: 1}, {1: 1}, {1: 1},
], OperationalError())
except sa_exceptions.DBAPIError, exc:
assert str(exc) \
== "(OperationalError) 'this is a message' [{1: 1}, "\
"{1: 1}] ... and a total of 11 bound parameter sets"
try:
raise sa_exceptions.DBAPIError.instance('this is a message',
[
(1, ), (1, ), (1, ), (1, ), (1, ), (1, ), (1, ), (1, ), (1, ),
(1, ),
], OperationalError())
except sa_exceptions.DBAPIError, exc:
assert str(exc) \
== "(OperationalError) 'this is a message' [(1,), "\
"(1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,)]"
try:
raise sa_exceptions.DBAPIError.instance('this is a message', [
(1, ), (1, ), (1, ), (1, ), (1, ), (1, ), (1, ), (1, ), (1, ),
(1, ), (1, ),
], OperationalError())
except sa_exceptions.DBAPIError, exc:
assert str(exc) \
== "(OperationalError) 'this is a message' [(1,), "\
"(1,)] ... and a total of 11 bound parameter sets"
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.ArgumentError())
except sa_exceptions.DBAPIError, e:
self.assert_(e.__class__ is sa_exceptions.DBAPIError)
except sa_exceptions.ArgumentError:
self.assert_(False)
def test_db_error_keyboard_interrupt(self):
try:
raise sa_exceptions.DBAPIError.instance('', [],
KeyboardInterrupt())
except sa_exceptions.DBAPIError:
self.assert_(False)
except KeyboardInterrupt:
self.assert_(True)
def test_db_error_system_exit(self):
try:
raise sa_exceptions.DBAPIError.instance('', [],
SystemExit())
except sa_exceptions.DBAPIError:
self.assert_(False)
except SystemExit:
self.assert_(True)
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