Hi,
can one help me .i want test class for my code

public class WrapperClassController 
{
    public List<AccountWrapper> accWrapList{get; set;}
    String queryString = 'Select Name, Type, BillingCity, BillingState, BillingCountry from Account order by Name';
    
    public WrapperClassController()
    {
        accWrapList = new List<AccountWrapper>();
        for(Account iter :Database.query(queryString))
        {
            accWrapList.add(new AccountWrapper(iter.Name,iter.Type,iter.BillingCity,iter.BillingState,iter.BillingCountry));
        }
        
        for(Contact iter :[SELECT LastName FROM Contact LIMIT 5])
        {
            accWrapList.add(new AccountWrapper(iter.LastName,null,null,null,null));
        }
    }
    
    public PageReference ProceedAction()
    {
        for(AccountWrapper iter :accWrapList)
        {
            if(iter.isSelected)
            {
            //Do necessary customization
            }
        }
        return null;
    }
    
    public class AccountWrapper
    {
        public String accName{get; set;}
        public String accType{get; set;}
        public String accCity{get; set;}
        public String accState{get; set;}
        public String accCtry{get; set;}
        public Boolean isSelected{get; set;}
        public String accRecId{get; set;}
        
        public AccountWrapper(String accName, String accType, String accCity, String accState, String accCtry)
        {
            this.accName = accName;
            this.accType = accType;
            this.accCity = accCity;
            this.accState = accState;
            this.accCtry = accCtry;
            this.accRecId = accRecId;
            isSelected = false;
        }
    }
}