Queue not associated with the Object type || SFDC || INTERVIEW STUFF

Queue not associated with the Object type

Problem Statement

During creating a test class for a functionality found an unusual exception, here is the case:

Create a lead whose owner should be a queue.

 

We started with this:

Group grp = new Group(Name = 'Queue', Type = 'Queue');

insert grp;         

Lead lead = new Lead(LastName = 'testLastName', company = 'test', OwnerId = grp.Id);

insert lead;

But when we run the class we got the below exception:

 System.DmlException: Insert failed. First exception on row 0; first error: INVALID_OPERATION, Queue not associated with this SObject type: []

 Solution

 There is an object named "QueueSobject" that represents the mapping between a queue Group and the sObject types associated with the queue, including custom objects.

 So whenever we want to have a group as an owner for a record, QueueSObject should be there to map that record with the Group:

 Group grp = new Group(Name = 'Queue', Type = 'Queue');

insert grp;

 QueueSobject mappingObject = new QueueSobject(QueueId = grp.Id, SobjectType = 'Lead');

System.runAs(new User(Id = UserInfo.getUserId()))

{insert mappingObject;}

          Lead lead = new Lead(LastName = 'testLastName', company = 'test', OwnerId = grp.Id);

insert
lead;