Guys Please help below code for unit testing, I am new in salesforce

@istest
public class Industryisbankingtest
{
    static testmethod void test5(){
        account ac = new account(name='Robin Ltd',Industry='Banking',Ownership='Private');
        test.startTest();
        insert ac ;
        test.stoptest();
        account act = [select id,name,Ownership from account where id =: ac.id];
        system.debug('==act=='+act);
        system.debug('==ac.ownershp=='+act.Ownership); 
        system.assertEquals('Public' , act.ownership);
    }
}