tests: readd custom user tests, erroneously removed (#16323)

tests/test_custom_user.py

@@ -0,0 +1,44 @@
+from django.test import TestCase
+from django.contrib.contenttypes.models import ContentType
+from django.contrib.auth import get_user_model
+from django.core.exceptions import ValidationError
+
+from django_rbac.utils import get_permission_model, get_role_model
+
+Permission = get_permission_model()
+Role = get_role_model()
+User = get_user_model()
+
+
+class CustomUserTestCase(TestCase):
+    def test_roles_and_parents(self):
+        rchild1 = Role.objects.create(name='role-child1')
+        rparent1 = Role.objects.create(name='role-parent1')
+        rparent2 = Role.objects.create(name='role-parent2')
+        rchild2 = Role.objects.create(name='role-child2')
+        rparent1.add_child(rchild1)
+        rparent1.add_child(rchild2)
+        rparent2.add_child(rchild1)
+        rparent2.add_child(rchild2)
+
+        user1 = User.objects.create(username='user')
+        user1.roles.add(rchild1)
+        self.assertEqual(set([r.id for r in user1.roles_and_parents()]),
+                         set([rchild1.id, rparent1.id, rparent2.id]))
+        for r in user1.roles_and_parents():
+            if r.id == rchild1.id:
+                self.assertEqual(r.member, [user1])
+            else:
+                self.assertIn(r.id, [rparent1.id, rparent2.id])
+                self.assertEqual(r.member, [])
+        user1.roles.remove(rchild1)
+        user1.roles.add(rchild2)
+        self.assertEqual(set([r.id for r in user1.roles_and_parents()]),
+                         set([rchild2.id, rparent1.id, rparent2.id]))
+        for r in user1.roles_and_parents():
+            if r.id == rchild2.id:
+                self.assertEqual(r.member, [user1])
+            else:
+                self.assertIn(r.id, [rparent1.id, rparent2.id])
+                self.assertEqual(r.member, [])
+