update unit and acceptance tests
diff --git a/openstack/blockstorage/v1/snapshots/requests.go b/openstack/blockstorage/v1/snapshots/requests.go
index f823b3d..7dcbc46 100644
--- a/openstack/blockstorage/v1/snapshots/requests.go
+++ b/openstack/blockstorage/v1/snapshots/requests.go
@@ -49,13 +49,12 @@
 	return res
 }
 
-func Delete(client *gophercloud.ServiceClient, id string) DeleteResult {
-	var res DeleteResult
-	_, res.Err = perigee.Request("DELETE", deleteURL(client, id), perigee.Options{
+func Delete(client *gophercloud.ServiceClient, id string) error {
+	_, err := perigee.Request("DELETE", deleteURL(client, id), perigee.Options{
 		MoreHeaders: client.Provider.AuthenticatedHeaders(),
-		OkCodes:     []int{204},
+		OkCodes:     []int{202, 204},
 	})
-	return res
+	return err
 }
 
 func Get(client *gophercloud.ServiceClient, id string) GetResult {
@@ -116,7 +115,7 @@
 
 	_, res.Err = perigee.Request("PUT", updateURL(client, id), perigee.Options{
 		MoreHeaders: client.Provider.AuthenticatedHeaders(),
-		OkCodes:     []int{200},
+		OkCodes:     []int{202, 204},
 		ReqBody:     &reqBody,
 		Results:     &res.Resp,
 	})