Test method failed...

Am getting null pointer exception in  test method where i cant get the value  info.getContact().id;

Please guide me for a solution..

public with sharing class CurrentUser {

  public CurrentUser() {    
       User u = [select Id, ContactId, UserType from User where Id = :Userinfo.getUserId()];

}
}

      public  class CreateAcct {
public CreateAcc(){
   accountID = '';
   account = new account();
 
 }
 Public void JoinAcc(){
list<account> acclist = new list<account>();
acclist = [select id,name,BillingCountry,BillingState,Account_Type__c,Account_ID__c from account where Account_ID__c = :accountID];

}

Public void Submit(){
 contact con=new contact();
 CurrentUser info = new CurrentUser ();
 system.debug('contact id:' + info.getContact().id);

 ComReqtInfo__c comInfo = new ComReqInfo__c();
 comInfo.name = account.name;
 comInfo.Accountid__c=account.id;
 comInfo.Contactid__c=info.getContact().id;
  
 companyInfo.status__c='RequestPending';
 insert comInfo ;

}

 test Method:

@isTest
private class CreateAccTest{

 static testMethod void CorrectAccount () {    
  account acc = new account(name='dummy',Account_Type__c='dummy',BillingCountry='dummy',BillingState='dummy');  
 insert acc;    
 account acc1= [select id,Account_ID__c from account where id=:acc.id]; 
CreateAcc  con1 = new CreateAcc() ; 
con1.accountID = acc1.id ; 
 
con1.submit(); }
}
}