Logged in User Test Class

loggedinusertestclass

@isTest
public class CommunityController_TEST {
	@isTest
	private static void testContactUser() {
        //You'll need to use an actual Profile name in your org    
        Id p = [select id from profile where name='Customer Community User'].id;
       
        Account ac = new Account(name ='Test Community One') ;
        insert ac; 
       
        Contact con = new Contact(LastName ='testCon',AccountId = ac.Id);
        insert con;  
                  
        User user = new User(alias = 'test123', email='[email protected]',
                emailencodingkey='UTF-8', lastname='Testing', languagelocalekey='en_US',
                localesidkey='en_US', profileid = p, country='United States',IsActive =true,
                ContactId = con.Id,
                timezonesidkey='America/Los_Angeles', username='[email protected]');
       
        insert user;
        system.runAs(user) {
        	User testUser = CommunityController.getLoggedInUser();
            system.assertequals(testUser.Id, user.Id);
            system.assertequals(testUser.Contact.AccountId, ac.Id);
        }
   }
}