custom save method implemented in ItemForm(); views & tests updated accordingly (all UTs & FTs passing)

src/apps/dashboard/tests/test_forms.py

@@ -1,5 +1,6 @@
 from django.test import TestCase
 from ..forms import EMPTY_ITEM_ERROR, ItemForm
+from ..models import Item, List
 
 class ItemFormTest(TestCase):
     def test_form_item_has_placeholder_and_css_classes(self):
@@ -16,3 +17,11 @@ class ItemFormTest(TestCase):
         form = ItemForm(data={"text": ""})
         self.assertFalse(form.is_valid())
         self.assertEqual(form.errors["text"], [EMPTY_ITEM_ERROR])
+
+    def test_form_save_handles_saving_to_a_list(self):
+        mylist = List.objects.create()
+        form = ItemForm(data={"text": "do re mi"})
+        new_item = form.save(for_list=mylist)
+        self.assertEqual(new_item, Item.objects.get())
+        self.assertEqual(new_item.text, "do re mi")
+        self.assertEqual(new_item.list, mylist)