public void SignalboxExtensionsClass_ToSignalboxModelMethod_ThrowsArgumentNullException_IfParameterIsNull()
        {
            Signalbox testObject = null;

            _ = testObject.ToSignalboxModel();

            Assert.Fail();
        }
        public void SignalboxExtensionsClass_ToSignalboxModelMethod_ThrowsArgumentNullExceptionWithCorrectParamNameProperty_IfParameterIsNull()
        {
            Signalbox testObject = null;

            try
            {
                _ = testObject.ToSignalboxModel();
                Assert.Fail();
            }
            catch (ArgumentNullException ex)
            {
                Assert.AreEqual("box", ex.ParamName);
            }
        }