Fixed #15255 -- Stopped database cache from ignoring database routers when creating the cache table. Thanks, aaugustin.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16510 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/cache/tests.py

@@ -13,10 +13,11 @@ from django.conf import settings
 from django.core import management
 from django.core.cache import get_cache, DEFAULT_CACHE_ALIAS
 from django.core.cache.backends.base import CacheKeyWarning
+from django.db import connections, router
 from django.http import HttpResponse, HttpRequest, QueryDict
 from django.middleware.cache import FetchFromCacheMiddleware, UpdateCacheMiddleware, CacheMiddleware
 from django.test import RequestFactory
-from django.test.utils import get_warnings_state, restore_warnings_state
+from django.test.utils import get_warnings_state, restore_warnings_state, override_settings
 from django.utils import translation
 from django.utils import unittest
 from django.utils.cache import patch_vary_headers, get_cache_key, learn_cache_key
@@ -757,6 +758,41 @@ class DBCacheTests(unittest.TestCase, BaseCacheTests):
         self.cache = get_cache('db://%s?max_entries=30&cull_frequency=0' % self._table_name)
         self.perform_cull_test(50, 18)
 
+class DBCacheRouter(object):
+    """A router that puts the cache table on the 'other' database."""
+
+    def db_for_read(self, model, **hints):
+        if model._meta.app_label == 'django_cache':
+            return 'other'
+
+    def db_for_write(self, model, **hints):
+        if model._meta.app_label == 'django_cache':
+            return 'other'
+
+    def allow_syncdb(self, db, model):
+        if model._meta.app_label == 'django_cache':
+            return db == 'other'
+
+class CreateCacheTableForDBCacheTests(unittest.TestCase):
+
+    @override_settings(DEBUG=True)
+    def test_createcachetable_observes_database_router(self):
+        old_routers = router.routers
+        try:
+            router.routers = [DBCacheRouter()]
+            # cache table should not be created on 'default'
+            management.call_command('createcachetable', 'cache_table',
+                                    database='default',
+                                    verbosity=0, interactive=False)
+            self.assertEqual(len(connections['default'].queries), 0)
+            # cache table should be created on 'other'
+            management.call_command('createcachetable', 'cache_table',
+                                    database='other',
+                                    verbosity=0, interactive=False)
+            self.assertNotEqual(len(connections['other'].queries), 0)
+        finally:
+            router.routers = old_routers
+
 class LocMemCacheTests(unittest.TestCase, BaseCacheTests):
     backend_name = 'django.core.cache.backends.locmem.LocMemCache'