add fixture to populate the test db

network_inventory/inventory/tests/conftest.py

@@ -0,0 +1,8 @@
+import pytest
+from django.core.management import call_command
+
+
+@pytest.fixture(scope='session')
+def django_db_setup(django_db_setup, django_db_blocker):
+    with django_db_blocker.unblock():
+        call_command('loaddata', 'inventory.yaml')