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,
 	})
diff --git a/openstack/blockstorage/v1/snapshots/requests_test.go b/openstack/blockstorage/v1/snapshots/requests_test.go
index dae53fd..4050990 100644
--- a/openstack/blockstorage/v1/snapshots/requests_test.go
+++ b/openstack/blockstorage/v1/snapshots/requests_test.go
@@ -155,6 +155,6 @@
 		w.WriteHeader(http.StatusNoContent)
 	})
 
-	res := Delete(ServiceClient(), "d32019d3-bc6e-4319-9c1d-6722fc136a22")
-	th.AssertNoErr(t, res.Err)
+	err := Delete(ServiceClient(), "d32019d3-bc6e-4319-9c1d-6722fc136a22")
+	th.AssertNoErr(t, err)
 }
diff --git a/openstack/blockstorage/v1/snapshots/results.go b/openstack/blockstorage/v1/snapshots/results.go
index cc3a419..363d6e2 100644
--- a/openstack/blockstorage/v1/snapshots/results.go
+++ b/openstack/blockstorage/v1/snapshots/results.go
@@ -80,5 +80,3 @@
 type UpdateResult struct {
 	commonResult
 }
-
-type DeleteResult commonResult