[Backport] Fixing delete project dump asynch task

taiga/export_import/api.py

@@ -63,7 +63,7 @@ class ProjectExporterViewSet(mixins.ImportThrottlingPolicyMixin, GenericViewSet)
 
         if settings.CELERY_ENABLED:
             task = tasks.dump_project.delay(request.user, project)
-            tasks.delete_project_dump.apply_async((project.pk, project.slug),
+            tasks.delete_project_dump.apply_async((project.pk, project.slug, task.id),
                                                   countdown=settings.EXPORTS_TTL)
             return response.Accepted({"export_id": task.id})
 

tests/integration/test_exporter_api.py

@@ -16,6 +16,8 @@
 
 import pytest
 
+from unittest import mock
+
 from django.core.urlresolvers import reverse
 
 from .. import factories as f
@@ -61,11 +63,17 @@ def test_valid_project_export_with_celery_enabled(client, settings):
 
     url = reverse("exporter-detail", args=[project.pk])
 
+    #delete_project_dump task should have been launched
+    with mock.patch('taiga.export_import.tasks.delete_project_dump') as delete_project_dump_mock:
         response = client.get(url, content_type="application/json")
         assert response.status_code == 202
         response_data = response.data
         assert "export_id" in response_data
 
+        args = (project.id, project.slug, response_data["export_id"],)
+        kwargs = {"countdown": settings.EXPORTS_TTL}
+        delete_project_dump_mock.apply_async.assert_called_once_with(args, **kwargs)
+
 
 def test_valid_project_with_throttling(client, settings):
     settings.CELERY_ENABLED = False