First things to implement a event change log

dav_events/tests/test_models.py

@@ -0,0 +1,54 @@
+from __future__ import unicode_literals
+import datetime
+import json
+from django.test import TestCase
+
+from .generic import EventMixin
+
+TEST_EVENT_DATA = {
+    'title': 'Täst',
+    'description': 'Teßt',
+    'mode': 'joint',
+    'sport': 'W',
+    'level': 'beginner',
+    'first_day': datetime.date(2019, 3, 1),
+    'country': 'DE',
+    'trainer_firstname': 'Übungsleiter',
+    'trainer_familyname': 'Weißalles',
+    'trainer_email': 'trainer@localhost',
+}
+
+
+class EventsTestCase(EventMixin, TestCase):
+    def test_empty_changelog(self):
+        data = TEST_EVENT_DATA
+        event = self.create_event_by_model(data)
+        event.sport = 'M'
+        self.assertFalse(event.changes.exists())
+
+    def test_changelog(self):
+        data = TEST_EVENT_DATA
+        event = self.create_event_by_model(data)
+
+        event.alt_first_day = event.first_day + datetime.timedelta(1)
+        event.sport = 'M'
+        event.ski_lift = True
+        event.save()
+
+        event.country = 'FR'
+        event.max_participants = 8
+        event.save()
+
+        changes = event.changes
+        self.assertEqual(changes.count(), 2)
+
+        subchanges = json.loads(changes.first().content)
+        self.assertEqual(len(subchanges), 3)
+        self.assertIn({'field': 'alt_first_day', 'refer': 'None', 'current': '2019-03-02'}, subchanges)
+        self.assertIn({'field': 'sport', 'refer': 'W', 'current': 'M'}, subchanges)
+        self.assertIn({'field': 'ski_lift', 'refer': 'False', 'current': 'True'}, subchanges)
+
+        subchanges = json.loads(changes.last().content)
+        self.assertEqual(len(subchanges), 2)
+        self.assertIn({'field': 'country', 'refer': 'DE', 'current': 'FR'}, subchanges)
+        self.assertIn({'field': 'max_participants', 'refer': '0', 'current': '8'}, subchanges)