public void Cannot_Execute_internal_Method_from_external_object() { var calculator = new TestCalculator(); using var engine = new V8ScriptEngine(); engine.AddHostObject("calculator", calculator); engine.Invoking(e => e.Execute(@" calculator.InternalAdd(1,2); ")).Should().Throw <ScriptEngineException>().WithMessage("TypeError: calculator.InternalAdd is not a function"); }