public async Task WriteStopOperationMessage_WithOperationId_IsMatch() { // arrange await using var writer = new SocketMessageWriter(); var operationId = "12f90cc5-2905-4d10-b33a-cb6d8f98a810"; // act writer.WriteStopOperationMessage(operationId); // assert Encoding.UTF8.GetString(writer.Body.Span).MatchSnapshot(); }