list sharing implemented w. passing UTs & FTs; changes to apps.dashboard.urls, .models, .views & .tests.test_views to accomodate; functional_tests.test_sharing also ensures sharing visible in UX; templates/apps/dashboard/list.html & /my_lists.html updated with django templating & for loops

src/apps/dashboard/tests/test_views.py

@@ -1,7 +1,8 @@
 import lxml.html
+from unittest import skip
 from django.test import TestCase
 from django.utils import html
-from unittest import skip
+
 from ..forms import (
     DUPLICATE_ITEM_ERROR,
     EMPTY_ITEM_ERROR,
@@ -9,6 +10,7 @@ from ..forms import (
 from ..models import Item, List
 from apps.lyric.models import User
 
+
 class HomePageTest(TestCase):
     def test_uses_home_template(self):
         response = self.client.get('/')
@@ -180,3 +182,22 @@ class MyListsTest(TestCase):
         response = self.client.get(f"/apps/dashboard/users/{user1.id}/")
         # assert 403
         self.assertEqual(response.status_code, 403)
+
+class ShareListTest(TestCase):
+    def test_post_to_share_list_url_redirects_to_list(self):
+        our_list = List.objects.create()
+        alice = User.objects.create(email="alice@example.com")
+        response = self.client.post(
+            f"/apps/dashboard/{our_list.id}/share_list",
+            data={"recipient": "alice@example.com"},
+        )
+        self.assertRedirects(response, f"/apps/dashboard/{our_list.id}/")
+
+    def test_post_with_email_adds_user_to_shared_with(self):
+        our_list = List.objects.create()
+        alice = User.objects.create(email="alice@example.com")
+        self.client.post(
+            f"/apps/dashboard/{our_list.id}/share_list",
+            data={"recipient": "alice@example.com"},
+        )
+        self.assertIn(alice, our_list.shared_with.all())