fix regression test

tests/settings.py

@@ -19,6 +19,7 @@ INSTALLED_APPS = [
     'django.contrib.admin',
     'pipeline',
     'tests',
+    'tests.tests'
 ]
 
 ROOT_URLCONF = 'tests.urls'

tests/tests/test_storage.py

@@ -27,6 +27,6 @@ class StorageTest(TestCase):
     def test_find_storage(self):
         try:
             storage = PipelineFinderStorage()
-            storage.find_storage('testing.css')
+            storage.find_storage('app.css')
         except ValueError:
             self.fail()