TestRestrictContactByNamev2

@isTest
public class TestRestrictContactByName {

    @isTest static void testContactTrigger() {
        Test.StartTest();
        Contact c = new Contact(LastName = 'INVALIDNAME');
        Database.SaveResult result = Database.insert(c, false);
        System.assert(!result.isSuccess());
        System.assert(result.getErrors().size() > 0);
        Test.StopTest();
    }
  
}