--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/potd/tests/test_tasks.py	Tue Jan 28 19:02:18 2025 -0600
@@ -0,0 +1,45 @@
+"""
+Unit tests for the potd application tasks.
+
+"""
+from django.test import TestCase
+
+from potd.models import Current, Photo, Sequence
+from potd.tasks import pick_potd
+
+
+class PickPotdTestCase(TestCase):
+    """Testing the pick_potd celery task."""
+    fixtures = ['potd_test.json']
+
+    def test_picks_the_next_photo_in_sequence(self):
+        task = pick_potd.s().apply()
+        current_id = Current.objects.get_current_id()
+        self.assertEqual(current_id, 2)
+
+        new_photo = Photo.objects.get(pk=2)
+        self.assertEqual(new_photo.potd_count, 6)
+
+    def test_generates_a_new_sequence(self):
+        current = Current.objects.get(pk=1)
+        new_photo = Photo.objects.get(pk=3)
+        current.potd = new_photo
+        current.save()
+
+        task = pick_potd.s().apply()
+
+        # The sequence gets shuffled, but there is a good chance it
+        # might be the same, so don't test that.
+
+        current_photo = Current.objects.get_current_photo()
+        new_seq = Sequence.objects.get(pk=1).seq.split(',')
+        self.assertEqual(len(new_seq), 3)
+        self.assertEqual(int(new_seq[0]), current_photo.pk)
+
+        if current_photo.pk == 1 or current_photo.pk == 3:
+            self.assertEqual(current_photo.potd_count, 7)
+        elif current_photo.pk == 2:
+            self.assertEqual(current_photo.potd_count, 6)
+        else:
+            self.fail('Unexpected photo pk in new sequence')
+