Beginning work on add user role
diff --git a/openstack/identity/v2/extensions/admin/roles/fixtures.go b/openstack/identity/v2/extensions/admin/roles/fixtures.go
index 04fccd7..e92476c 100644
--- a/openstack/identity/v2/extensions/admin/roles/fixtures.go
+++ b/openstack/identity/v2/extensions/admin/roles/fixtures.go
@@ -30,3 +30,11 @@
   `)
 	})
 }
+
+func MockAddUserRoleResponse(t *testing.T) {
+	th.Mux.HandleFunc("/tenants/{tenant_id}/users/{user_id}/OS-KSADMN/roles/{role_id}", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "PUT")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+		w.WriteHeader(http.StatusCreated)
+	})
+}