public void FileFor_Value_Int()
{
var model = new Model1()
{
PropInt = 1
};
var helper = new HtmlTagHelper <Model1>(model);
var propExpression = Expr((Model1 m) => m.PropInt);
var tag = helper.FileFor(propExpression);
AssertValid(tag, "input", "PropInt", type: "file", value: null);
}