Hi, I'm trying to update addresses on my Orders record from the Account selected. This is my code, but somehow it's getting very low code coverage, and I'm not sure what I'm doing wrong.. Can someone please point me in the right direction? Thanks!
 

trigger fillAddresses on Order (before insert) {
    if (Trigger.isBefore) {
        if (Trigger.isInsert) {
            try {
                Order[] orders = Trigger.new;
                
                prefillFields.applyAddress(orders);
            }
            catch (Exception ex) {
                System.debug('Exception caught: ' + ex.getMessage());
            }
        }
    }
}

 

public class prefillFields {
    
    public static void applyAddress(Order[] orders) {
        for (Order o : orders) {
            Account[] accounts = [SELECT BillingCity, BillingCountry, BillingPostalCode, BillingState, BillingStreet, ShippingCity, ShippingCountry, ShippingPostalCode, ShippingState, ShippingStreet, Department_NS__c, ReportingCountry_NS__c FROM Account WHERE AccountNumber =: o.AccountId];
            
            // System.Debug('a.BillingCountry');
            // for (Account a : accounts) {
                o.BillingCity = 'City';
                o.BillingCountry = 'Country';
                o.BillingPostalCode = '12345';
                o.BillingState = '';
                o.BillingStreet = 'Street';
                o.ShippingCity = 'City';
                o.ShippingCountry = 'Country';
                o.ShippingPostalCode = 'Country';
                o.ShippingState = '';
                o.ShippingStreet = 'Street';
                // Still need to get set fields for Department and Shipping Country
            // }
            
            update o;
        }
    }   
}