[SalesForce] Assigning Tasks to Related User

Rule-based functionality in Salesforce rarely allows you to assign things to users, even dynamic user values that are data-driven, for instance the user who is identified as the LastUpdate user or Owner.

There are two ways I could see you accomplishing what you are after, depending on what exactly the underlying goal is.

If you want to always be able to see the Account address information on the Contact, consider using a set of cross-object formula fields in Contact that simply reflect the current Account address info in that record. In this instance, no additional work on the part of the user required. The next time they look at the contact record, the address info will be updated.

If you really want a user to have a task assigned to them, or have some other way to virtually tap them on the shoulder and tell them to look at the contact record, too, you can do what you want with a relatively straightforward trigger. But once you are writing Apex, you have many more options for notifications: task, email, chatter post, UI message message, or just automatically just go to the contact record and update it.

So the answer to your question is, yes, it is possible. But you will need to decide which of these options best suits your requirements.

I would do something like this for your tests and work from there

@isTest
private class Followup24EmailTest {

static testMethod void TestFollowup24Email() {

// User Id's for the two sales managers.
String aId = '00561000001DTdh';

List <Contact> contacts = new List <Contact>();
List <Task> tasks = new List <Task>();

// Create 50 Contacts and assign them to the sales manager of the opposite location.

for (integer i=0; i<50; i++) {
    Contact c = new Contact(FirstName='Test',
                LastName='Contact'+ i,
                Sales_Rep_Updated__c = Date.today().addDays(-1),
                Welcome_Email_Sent__c  = false,
                OwnerId = aId);
    contacts.add(c);

} //close for-loop

insert contacts;

Test.StartTest();

// Call the Batch Apex method.
Followup24Email fue = new Followup24Email();
ID batchprocessid = Database.executeBatch(fue);

Test.StopTest();

List<Task> taskResult = [SELECT ID From TASK];
System.debug('taskResult' + taskResults.size());
/*AsyncApexJob async = [Select Id, Status, NumberOfErrors, JobItemsProcessed, TotalJobItems from AsyncApexJob where Id = :batchprocessid];
System.debug('Final results are ' + async);

System.AssertEquals(async.NumberOfErrors, 0);
System.AssertEquals([Select count() from Contact Where OwnerId=:aId AND FirstName='Test'], 50);
System.AssertEquals([Select count() from Task Where Subject = 'Send Welcome Email'], 50);*/

} //close testmethod

} //close Class