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Added test for reraising backend-specific database exceptions.

This commit is contained in:
Mariusz Felisiak 2017-04-25 08:03:48 +02:00 committed by GitHub
parent e776dd2db6
commit 562bca67b9
1 changed files with 18 additions and 2 deletions
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20
tests/backends/test_utils.py
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@ -1,7 +1,10 @@
import unittest
from django.core.exceptions import ImproperlyConfigured
from django.db import connection
from django.db.backends.utils import truncate_name
from django.db.utils import load_backend
from django.test import SimpleTestCase
from django.db.utils import ProgrammingError, load_backend
from django.test import SimpleTestCase, TestCase
class TestLoadBackend(SimpleTestCase):
@ -24,3 +27,16 @@ class TestLoadBackend(SimpleTestCase):
self.assertEqual(truncate_name('username"."some_table', 10), 'username"."some_table')
self.assertEqual(truncate_name('username"."some_long_table', 10), 'username"."some_la38a')
self.assertEqual(truncate_name('username"."some_long_table', 10, 3), 'username"."some_loa38')
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific tests')
class TestDatabaseErrorWrapper(TestCase):
def test_reraising_backend_specific_database_exception(self):
cursor = connection.cursor()
msg = 'table "X" does not exist'
with self.assertRaisesMessage(ProgrammingError, msg) as cm:
cursor.execute('DROP TABLE "X"')
self.assertNotEqual(type(cm.exception), type(cm.exception.__cause__))
self.assertIsNotNone(cm.exception.__cause__)
self.assertIsNotNone(cm.exception.__cause__.pgcode)
self.assertIsNotNone(cm.exception.__cause__.pgerror)