Task #349 - API fails when DELETE-ing an userstory

Link - https://kaleidos.taiga.io/#/project/taiga/tasks/349

tests/factories.py

@@ -323,3 +323,16 @@ def create_membership(**kwargs):
     defaults.update(kwargs)
 
     return MembershipFactory.create(**defaults)
+
+
+def create_userstory(**kwargs):
+    "Create an user story along with its dependencies"
+    project = kwargs.pop("project", ProjectFactory())
+
+    defaults = {
+        "project": project,
+        "owner": project.owner
+    }
+    defaults.update(kwargs)
+
+    return UserStoryFactory(**defaults)

tests/integration/test_userstories.py

@@ -2,8 +2,12 @@ from unittest import mock
 
 import pytest
 
+from django.core.urlresolvers import reverse
+
 from taiga.projects.userstories import services, models
 
+from .. import factories as f
+
 pytestmark = pytest.mark.django_db
 
 
@@ -37,3 +41,13 @@ def test_update_userstories_order_in_bulk(db):
 
     db.update_in_bulk_with_ids.assert_called_once_with([1, 2], [{"order": 1}, {"order": 2}],
                                                        model=models.UserStory)
+
+
+def test_api_delete_userstory(client):
+    us = f.create_userstory()
+    url = reverse("userstories-detail", kwargs={"pk": us.pk})
+
+    client.login(us.owner)
+    response = client.delete(url)
+
+    assert response.status_code == 204