Salesforce Custom Settings Using Hierarchy Custom Settings To Disable Apex Code

Example

Explanation

In this example a simple Trigger has been created to change the Close Date of an Opportunity, that's about to be inserted or updated, to a date 10 days in the future.

The Apex Controller custom setting's checkbox field enables the code to be disabled at the user / profile / org level.

Apex Class

trigger CloseDateUpdate on Opportunity (before insert, before update) {
    
    Id userId;
    Apx_Cntrlr__c userApexController;
    Boolean userSetting;
    
    userId = userinfo.getUserId();
    userApexController = Apx_Cntrlr__c.getInstance(userId);
    userSetting = userApexController.Close_Date_Update_Disabled__c;

    if (userSetting == false) {
        for(Opportunity opp : Trigger.new) {
            opp.CloseDate = date.today().addDays(10);
        }
    }
    
}

Unit Test

@isTest
public class CloseDateUpdateTest {
    
    @testSetup
    static void dataSetup() {
        
        Profile p = [SELECT Id FROM Profile WHERE Name = 'System Administrator' LIMIT 1];
        
        User u = new User(LastName = 'Test',Alias = 't1',Email = '[email protected]',Username = '[email protected]',ProfileId = p.Id,TimeZoneSidKey = 'America/Denver',LocaleSidKey = 'en_US',EmailEncodingKey = 'UTF-8',LanguageLocaleKey = 'en_US');
        insert u;
    }
    
    static testMethod void testCloseDateUpdateEnabled() {
        
        User u = [SELECT Id FROM User WHERE Username = '[email protected]'];
        // set the custom setting field to FALSE so that the trigger is not deactivated
        Apx_Cntrlr__c apexController = new Apx_Cntrlr__c(SetupOwnerId = u.Id,Close_Date_Update_Disabled__c = false);
        upsert apexController;
        
        Opportunity[] opportunities1 = new Opportunity[]{};
        
        test.startTest();
        system.runAs(u){
                
                for(integer i = 0; i < 200; i++) {
                    opportunities1.add(new Opportunity(
                        Name          = 'Test Opp ' + i,
                        OwnerId       = u.Id,
                        StageName     = 'Prospecting',
                        CloseDate     = date.today().addDays(1),
                        Amount        = 100));
                }
            insert opportunities1;
        }
        test.stopTest();
        
        List<Opportunity> opportunities2 = [SELECT CloseDate FROM Opportunity];
        
        for(Opportunity o : opportunities2){
            system.assertEquals(date.today().addDays(10), o.closeDate, 'CloseDateUpdate trigger should have changed the Opportunity close date as it was not disabled by the apexController custom setting');
        }
    }
    
    static testMethod void testCloseDateUpdateDisabled() {
        
        User u = [SELECT Id FROM User WHERE Username = '[email protected]'];
        // set the custom setting field to TRUE to deactivate the trigger
        Apx_Cntrlr__c apexController = new Apx_Cntrlr__c(SetupOwnerId = u.Id,Close_Date_Update_Disabled__c = true);
        upsert apexController;
        
        Opportunity[] opportunities1 = new Opportunity[]{};
            
        test.startTest();
        system.runAs(u){
            
            for(integer i = 0; i < 200; i++) {
                opportunities1.add(new Opportunity(
                    Name          = 'Test Opp ' + i,
                    OwnerId       = u.Id,
                    StageName     = 'Prospecting',
                    CloseDate     = date.today().addDays(1),
                    Amount        = 100));
            }
            insert opportunities1;
        }
        test.stopTest();
        
        List<Opportunity> opportunities2 = [SELECT CloseDate FROM Opportunity];
        
        for(Opportunity o : opportunities2){
            system.assertEquals(date.today().addDays(1), o.closeDate, 'CloseDateUpdate trigger should not have changed the Opportunity close date as it was disabled by the apexController custom setting');
        }
    }
        
}