public void TestFormExtension()
{
Response res = new Response();
Form myform = new Form(1);
Textbox input1 = new Textbox(1, "Enter first input", true);
Textbox input2 = new Textbox(1, "Enter second input", true);
// Adding inputs with same ID throws exception
Assert.Throws <Exception>(() => myform.AddFormInputs(new List <FormInputBase>()
{
input1, input2
}));
input2 = new Textbox(2, "Enter second input");
myform.AddFormInput(input2);
Assert.NotEmpty(myform.FormInputs);
Assert.Equal(2, myform.FormInputs.Count);
res.AddForm(myform);
Assert.NotEmpty(res.Dataset);
Assert.Equal <RenderingType>(RenderingType.Form, res.Dataset.FirstOrDefault().RenderingProperties.Type);
}