diff --git a/nova/tests/functional/api/openstack/placement/gabbits/inventory.yaml b/nova/tests/functional/api/openstack/placement/gabbits/inventory.yaml
index 8080a75bcb21..0e59eeddf85a 100644
--- a/nova/tests/functional/api/openstack/placement/gabbits/inventory.yaml
+++ b/nova/tests/functional/api/openstack/placement/gabbits/inventory.yaml
@@ -642,18 +642,57 @@ tests:
       openstack-api-version: placement 1.5
   status: 204
 
-- name: get inventories after deletion
-  GET: /resource_providers/$ENVIRON['RP_UUID']/inventories
-  response_json_paths:
-      $.resource_provider_generation: 7
-      $.inventories: {}
-
 - name: delete empty inventories
   DELETE: /resource_providers/$ENVIRON['RP_UUID']/inventories
   request_headers:
       openstack-api-version: placement 1.5
   status: 204
 
+- name: get inventories after deletions
+  GET: /resource_providers/$ENVIRON['RP_UUID']/inventories
+  response_json_paths:
+      $.resource_provider_generation: 8
+      $.inventories: {}
+
+- name: post an inventory again
+  POST: /resource_providers/$ENVIRON['RP_UUID']/inventories
+  request_headers:
+      content-type: application/json
+  data:
+      resource_class: DISK_GB
+      total: 2048
+      reserved: 512
+      min_unit: 10
+      max_unit: 1024
+      step_size: 10
+      allocation_ratio: 1.0
+  status: 201
+  response_headers:
+      location: $SCHEME://$NETLOC/resource_providers/$ENVIRON['RP_UUID']/inventories/DISK_GB
+  response_json_paths:
+      $.resource_provider_generation: 9
+      $.total: 2048
+      $.reserved: 512
+
+- name: delete all inventory with put
+  PUT: /resource_providers/$ENVIRON['RP_UUID']/inventories
+  request_headers:
+      content-type: application/json
+      openstack-api-version: placement 1.4
+  data:
+      resource_provider_generation: 9
+      inventories: {}
+  response_json_paths:
+      $.resource_provider_generation: 10
+      $.inventories: {}
+  status: 200
+
+- name: get generation after deletion
+  GET: /resource_providers/$ENVIRON['RP_UUID']/inventories
+  response_json_paths:
+      $.resource_provider_generation: 10
+      $.inventories: {}
+
 - name: delete inventories earlier version
   DELETE: /resource_providers/$ENVIRON['RP_UUID']/inventories
   request_headers: