Added idempotent deploy support.

tests/test_fixtures.py

@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+
+from django.core.management import call_command
+from django.test import TestCase
+
+from admin_interface.models import Theme
+
+
+class AdminInterfaceFixturesTestCase(TestCase):
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def __load_theme(self, theme_name):
+        call_command('loaddata', 'admin_interface_theme_%s.json' % (theme_name, ))
+
+    def test_import_all(self):
+        self.__load_theme('django')
+        self.__load_theme('bootstrap')
+        self.__load_theme('foundation')
+        self.__load_theme('uswds')
+        self.assertEqual(Theme.objects.count(), 4);
+
+    def test_import_idempotency(self):
+        self.__load_theme('django')
+        self.__load_theme('django')
+        self.__load_theme('django')
+        self.__load_theme('django')
+        self.__load_theme('django')
+        self.assertEqual(Theme.objects.count(), 1);
+        self.__load_theme('bootstrap')
+        self.__load_theme('bootstrap')
+        self.__load_theme('bootstrap')
+        self.assertEqual(Theme.objects.count(), 2);
+
+    def test_import_override(self):
+        obj1 = Theme.get_active_theme()
+        obj1.title = 'Custom 1'
+        obj1.save()
+        self.__load_theme('django')
+        obj2 = Theme.get_active_theme()
+        self.assertEqual(obj1.pk, obj2.pk)
+        self.assertTrue(obj1.title != obj2.title)