Fix staticfiles panel to work with prefixed STATICFILES_DIRS.

Closes #503 and #507. Many thanks to Alexander Clausen (@sk1p) for the
inspiration for the patch.

2 files changed, 7 insertions, 5 deletions

diff --git a/tests/panels/test_staticfiles.py b/tests/panels/test_staticfiles.py
index 70a7b96..be4f267 100644
--- a/tests/panels/test_staticfiles.py
+++ b/tests/panels/test_staticfiles.py
@@ -2,7 +2,7 @@
 
 from __future__ import absolute_import, unicode_literals
 
-from django.conf import settings
+from django.contrib.staticfiles import finders
 
 from ..base import BaseTestCase
 
@@ -19,10 +19,10 @@ class StaticFilesPanelTestCase(BaseTestCase):
         self.assertIn('django.contrib.staticfiles.finders.'
                       'AppDirectoriesFinder', self.panel.content)
         self.assertIn('django.contrib.staticfiles.finders.'
-                      'FileSystemFinder (1 file)', self.panel.content)
+                      'FileSystemFinder (2 files)', self.panel.content)
         self.assertEqual(self.panel.num_used, 0)
         self.assertNotEqual(self.panel.num_found, 0)
         self.assertEqual(self.panel.get_staticfiles_apps(),
                          ['django.contrib.admin', 'debug_toolbar'])
         self.assertEqual(self.panel.get_staticfiles_dirs(),
-                         settings.STATICFILES_DIRS)
+                         finders.FileSystemFinder().locations)
diff --git a/tests/settings.py b/tests/settings.py
index 68346ff..70049b4 100644
--- a/tests/settings.py
+++ b/tests/settings.py
@@ -42,8 +42,10 @@ ROOT_URLCONF = 'tests.urls'
 
 STATIC_URL = '/static/'
 
-STATICFILES_DIRS = [os.path.join(BASE_DIR, 'tests', 'additional_static')]
-
+STATICFILES_DIRS = [
+    os.path.join(BASE_DIR, 'tests', 'additional_static'),
+    ("prefix", os.path.join(BASE_DIR, 'tests', 'additional_static')),
+]
 
 # Cache and database