diff --git a/openstack/identity/v2/users/fixtures.go b/openstack/identity/v2/users/fixtures.go
index 2e72b87..796bc1a 100644
--- a/openstack/identity/v2/users/fixtures.go
+++ b/openstack/identity/v2/users/fixtures.go
@@ -136,3 +136,28 @@
 		w.WriteHeader(http.StatusNoContent)
 	})
 }
+
+func MockListRolesResponse(t *testing.T) {
+	th.Mux.HandleFunc("/tenants/1d8b6120dcc640fda4fc9194ffc80273/users/c39e3de9be2d4c779f1dfd6abacc176d", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "GET")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+
+		w.Header().Add("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+
+		fmt.Fprintf(w, `
+{
+    "roles": [
+        {
+            "id": "9fe2ff9ee4384b1894a90878d3e92bab",
+            "name": "foo_role"
+        },
+        {
+            "id": "1ea3d56793574b668e85960fbf651e13",
+            "name": "admin"
+        }
+    ]
+}
+	`)
+	})
+}