added a test

test/test_celery_worker_global.py

@@ -3,6 +3,7 @@ just checks that the worker methods call the right functions
 and some data ends up in the right place ... otherwise not very detailed
 """
 import contextlib
+import os
 
 from inventory_provider.tasks import worker
 
@@ -46,3 +47,10 @@ def test_update_locations(mocker, mocked_worker_module, mocked_redis):
     assert len(list(_cached_locations())) == 0  # sanity
     worker.update_equipment_locations()
     assert len(list(_cached_locations())) > 0
+
+
+def test_InventoryTask_obj(data_config_filename):
+
+    os.environ['INVENTORY_PROVIDER_CONFIG_FILENAME'] = data_config_filename
+    task = worker.InventoryTask()
+    assert task.config