trigger LicenseDownloads on Account (after update) {

    for(Account acc:Trigger.new){
        Account oldAcc=Trigger.oldMap.get(acc.Id);
        if(oldAcc.License_Downloads__c!=acc.License_Downloads__c)
            {
                List<Contact>children=[SELECT Id,AccountId,Licensing_Downloads__c from Contact where AccountId = :acc.Id];
                List<Contact>newids=new List<Contact>();
                
                for(Contact con:children){
                    if(con.Licensing_Downloads__c!=acc.License_Downloads__c){
                        con.Licensing_Downloads__c=acc.License_Downloads__c;
                    newids.add(con);
                    }
                }
                if(newids.isEmpty()==false){
                    update newids;
                }
            }
    }
}

@IsTest
public class RelationshipTypesInsert_Test {

    public testMethod static void contactInsertion() {
        Account acct = new Account(name='Apex Test Account',BillingState='Oregon',BillingCountry='United States');
        insert acct;

        // Consider setting some address fields as required by copyAddressFields
        Contact c = new Contact(AccountId=acct.Id, lastname='testing', firstname='apex');
        insert c;

        //Make some assertions based on the results of the copyAddressFields call
        
        List<Account> accountsToUpdate = new List<Account>();
        for(Account a : [SELECT Id,Name,Technology_Partner_Tier__c,Account_Status__c,Channel_Partner__c FROM Account WHERE Name = 'Apex test Account']){
            if(a.Account_Status__c == 'Inactive'){
                   a.Technology_Partner_Tier__c = 'Ecosystem';
                   a.Account_Status__c= 'Active';
                   a.Channel_Partner__c= 'Access';
                /** Here put update actions **/
                accountsToUpdate.add(a); 
            }
        }
        update accountsToUpdate;
           
    }

    public testMethod static void contactInsertionFails() {
        Account acct = new Account(name='test account');
        insert acct;

        // Set some fields that will cause an Exception in copyAddressFields
        Contact c = new Contact(AccountId=acct.Id, lastname='testing', firstname='apex', email='apex.testing@elementaltechonlogies.com');
        insert c;

        //Make some assertions that errors were added to the Contact

    }

    public testMethod static void bulkifedInsertaion() {
        Account acct = new Account(name='test account',BillingState='Oregon',BillingCountry='United States',Technology_Partner_Tier__c='Ecosystem',Account_Status__c='Active',Channel_Partner__c='Access');
        insert acct;

        Contact[] contactsToCreate = new Contact[]{};

        for(Integer x=0; x<200;x++){
            Contact ct = new Contact(AccountId=acct.Id,lastname='testing',firstname='apex',email='apex.testing'+x+'@elementaltechnologies.com');
            contactsToCreate.add(ct);
        }

        Test.startTest();
        insert contactsToCreate;
        Test.stopTest();   
    }
}