--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parts/django/tests/regressiontests/app_loading/tests.py	Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,83 @@
+import copy
+import os
+import sys
+import time
+from unittest import TestCase
+
+from django.conf import Settings
+from django.db.models.loading import cache, load_app
+
+
+class InstalledAppsGlobbingTest(TestCase):
+    def setUp(self):
+        self.OLD_SYS_PATH = sys.path[:]
+        sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+        self.OLD_TZ = os.environ.get("TZ")
+
+    def test_globbing(self):
+        settings = Settings('test_settings')
+        self.assertEquals(settings.INSTALLED_APPS, ['parent.app', 'parent.app1', 'parent.app_2'])
+
+    def tearDown(self):
+        sys.path = self.OLD_SYS_PATH
+        if hasattr(time, "tzset") and self.OLD_TZ:
+            os.environ["TZ"] = self.OLD_TZ
+            time.tzset()
+
+
+class EggLoadingTest(TestCase):
+
+    def setUp(self):
+        self.old_path = sys.path[:]
+        self.egg_dir = '%s/eggs' % os.path.dirname(__file__)
+
+        # This test adds dummy applications to the app cache. These
+        # need to be removed in order to prevent bad interactions
+        # with the flush operation in other tests.
+        self.old_app_models = copy.deepcopy(cache.app_models)
+        self.old_app_store = copy.deepcopy(cache.app_store)
+
+    def tearDown(self):
+        sys.path = self.old_path
+        cache.app_models = self.old_app_models
+        cache.app_store = self.old_app_store
+
+    def test_egg1(self):
+        """Models module can be loaded from an app in an egg"""
+        egg_name = '%s/modelapp.egg' % self.egg_dir
+        sys.path.append(egg_name)
+        models = load_app('app_with_models')
+        self.assertFalse(models is None)
+
+    def test_egg2(self):
+        """Loading an app from an egg that has no models returns no models (and no error)"""
+        egg_name = '%s/nomodelapp.egg' % self.egg_dir
+        sys.path.append(egg_name)
+        models = load_app('app_no_models')
+        self.assertTrue(models is None)
+
+    def test_egg3(self):
+        """Models module can be loaded from an app located under an egg's top-level package"""
+        egg_name = '%s/omelet.egg' % self.egg_dir
+        sys.path.append(egg_name)
+        models = load_app('omelet.app_with_models')
+        self.assertFalse(models is None)
+
+    def test_egg4(self):
+        """Loading an app with no models from under the top-level egg package generates no error"""
+        egg_name = '%s/omelet.egg' % self.egg_dir
+        sys.path.append(egg_name)
+        models = load_app('omelet.app_no_models')
+        self.assertTrue(models is None)
+
+    def test_egg5(self):
+        """Loading an app from an egg that has an import error in its models module raises that error"""
+        egg_name = '%s/brokenapp.egg' % self.egg_dir
+        sys.path.append(egg_name)
+        self.assertRaises(ImportError, load_app, 'broken_app')
+        try:
+            load_app('broken_app')
+        except ImportError, e:
+            # Make sure the message is indicating the actual
+            # problem in the broken app.
+            self.assertTrue("modelz" in e.args[0])