Fixed #15255 -- Ensured createcachetable honors database routers.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17114 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/cache/tests.py

@@ -16,6 +16,7 @@ from django.core import management
 from django.core.cache import get_cache, DEFAULT_CACHE_ALIAS
 from django.core.cache.backends.base import (CacheKeyWarning,
     InvalidCacheBackendError)
+from django.db import router
 from django.http import HttpResponse, HttpRequest, QueryDict
 from django.middleware.cache import (FetchFromCacheMiddleware,
     UpdateCacheMiddleware, CacheMiddleware)
@@ -775,6 +776,44 @@ class DBCacheTests(unittest.TestCase, BaseCacheTests):
         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(TestCase):
+    multi_db = True
+
+    def test_createcachetable_observes_database_router(self):
+        old_routers = router.routers
+        try:
+            router.routers = [DBCacheRouter()]
+            # cache table should not be created on 'default'
+            with self.assertNumQueries(0, using='default'):
+                management.call_command('createcachetable', 'cache_table',
+                                        database='default',
+                                        verbosity=0, interactive=False)
+            # cache table should be created on 'other'
+            # one query is used to create the table and another one the index
+            with self.assertNumQueries(2, using='other'):
+                management.call_command('createcachetable', 'cache_table',
+                                        database='other',
+                                        verbosity=0, interactive=False)
+        finally:
+            router.routers = old_routers
+
+
 class LocMemCacheTests(unittest.TestCase, BaseCacheTests):
     backend_name = 'django.core.cache.backends.locmem.LocMemCache'