Adds more readthrough model tests

bookwyrm/tests/models/test_readthrough_model.py

@@ -1,7 +1,9 @@
 """ testing models """
+import datetime
 from unittest.mock import patch
 from django.test import TestCase
 from django.core.exceptions import ValidationError
+from django.utils import timezone
 
 from bookwyrm import models
 
@@ -21,27 +23,79 @@ class ReadThrough(TestCase):
             title="Example Edition", parent_work=self.work
         )
 
-        self.readthrough = models.ReadThrough.objects.create(
+    def test_valid_date(self):
-            user=self.user, book=self.edition
+        """can't finish a book before you start it"""
+        start = timezone.now()
+        finish = start + datetime.timedelta(days=1)
+        # just make sure there's no errors
+        models.ReadThrough.objects.create(
+            user=self.user,
+            book=self.edition,
+            start_date=start,
+            finish_date=finish,
+        )
+
+    def test_valid_date_null_start(self):
+        """can't finish a book before you start it"""
+        start = timezone.now()
+        finish = start + datetime.timedelta(days=1)
+        # just make sure there's no errors
+        models.ReadThrough.objects.create(
+            user=self.user,
+            book=self.edition,
+            finish_date=finish,
+        )
+
+    def test_valid_date_null_finish(self):
+        """can't finish a book before you start it"""
+        start = timezone.now()
+        # just make sure there's no errors
+        models.ReadThrough.objects.create(
+            user=self.user,
+            book=self.edition,
+            start_date=start,
+        )
+
+    def test_valid_date_null(self):
+        """can't finish a book before you start it"""
+        # just make sure there's no errors
+        models.ReadThrough.objects.create(
+            user=self.user,
+            book=self.edition,
+        )
+
+    def test_valid_date_same(self):
+        """can't finish a book before you start it"""
+        start = timezone.now()
+        # just make sure there's no errors
+        models.ReadThrough.objects.create(
+            user=self.user,
+            book=self.edition,
+            start_date=start,
+            finish_date=start,
         )
 
     def test_progress_update(self):
         """Test progress updates"""
-        self.readthrough.create_update()  # No-op, no progress yet
+        readthrough = models.ReadThrough.objects.create(
-        self.readthrough.progress = 10
+            user=self.user, book=self.edition
-        self.readthrough.create_update()
+        )
-        self.readthrough.progress = 20
-        self.readthrough.progress_mode = models.ProgressMode.PERCENT
-        self.readthrough.create_update()
 
-        updates = self.readthrough.progressupdate_set.order_by("created_date").all()
+        readthrough.create_update()  # No-op, no progress yet
+        readthrough.progress = 10
+        readthrough.create_update()
+        readthrough.progress = 20
+        readthrough.progress_mode = models.ProgressMode.PERCENT
+        readthrough.create_update()
+
+        updates = readthrough.progressupdate_set.order_by("created_date").all()
         self.assertEqual(len(updates), 2)
         self.assertEqual(updates[0].progress, 10)
         self.assertEqual(updates[0].mode, models.ProgressMode.PAGE)
         self.assertEqual(updates[1].progress, 20)
         self.assertEqual(updates[1].mode, models.ProgressMode.PERCENT)
 
-        self.readthrough.progress = -10
+        readthrough.progress = -10
-        self.assertRaises(ValidationError, self.readthrough.clean_fields)
+        self.assertRaises(ValidationError, readthrough.clean_fields)
-        update = self.readthrough.create_update()
+        update = readthrough.create_update()
         self.assertRaises(ValidationError, update.clean_fields)