Can any one help me how to call below wrapper class in my Test class. 
// wrapper class to allow the sobject the information and get displayed in the page

Public customcontroller
{

    public class sObjectWrapperClass
    {
        public sobject sobj{Get;set;}
        public String objectName{get;set;}
        public String actions{get;set;}
        public string groups{get;set;}
    }
}