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John Neff (Ring2Media) asked in #Apex
Mar 22, 2016, 12:35 PM

Test class returning error Invalid field Name even though the field name is correct - help!

Hello, 

I am trying to create a test class for a recently created trigger, and I am getting an error that Mobile__c is "Invalid field Name for SObject Task". 

The thing is that I have this field (Mobile__c) as an activity custom field and reference it in my trigger without issue. 

Here is the trigger: 

Trigger TaskBefore on Task(before insert, before update){
    Map<Id, List<Task>> whoIds = new Map<Id, List<Task>>{};
    For (Task t : trigger.new)
        If(t.WhoId != null){
            List<Task> tasks = whoIds.get(t.WhoId); //this should be t.WhoId (not task.WhoId)
            If (tasks == null){
            tasks = new List<Task>{};
            whoIds.put(t.WhoId, tasks);
        }
        tasks.add(t);
    }
    For (Lead ld : [Select Id, Name, MobilePhone from Lead where Id in :whoIDs.keySet()])
        For(Task t : whoIds.get(ld.id))
            t.Mobile__c = ld.MobilePhone;
    For(Contact con : [Select Id, Name, MobilePhone from Contact where Id in :whoIds.keySet()])
        For(Task t : whoIds.get(con.id))
            t.Mobile__c = con.MobilePhone;
}

And here is my tet class:

 

@isTest
private class TaskBeforeTestClass {
    static testMethod void validateTaskBefore() {
        Task t = new Task (Name='Validation Test Task', Mobile__c = '');
        System.debug('Mobile before insterting new task: ' + t.Mobile__c);
// Insert task
insert t;
//Retrieve the new task
t = [ SELECT Mobile__c FROM Task WHERE Id =:b.Id];
System.debug('Mobile after trigger fired: ' + t.Mobile__c);
// Test that the trigger correctly updated the mobile phone
System.assertNotEquals('', t.Mobile__c);
}
}

My approach here is that I am trying to validate that Mobile__c is BLANK before the trigger fires and not blank after. 

I am pretty new to apex coding, so I really appreciate the help!

Thanks, 

John

 
2 answers
  1. Pankaj Ganwani (Indeed Inc.)
    Mar 22, 2016, 12:41 PM
    Hi John,

    Name field does not exist with Task object, so you will have to remove it from the test class while creating Task record. Use subject field instead.

     

    @isTest
    private class TaskBeforeTestClass {
        static testMethod void validateTaskBefore() {
            Task t = new Task (Subject='Validation Test Task', Mobile__c = '');
            System.debug('Mobile before insterting new task: ' + t.Mobile__c);
    // Insert task
    insert t;
    //Retrieve the new task
    t = [ SELECT Mobile__c FROM Task WHERE Id =:b.Id];
    System.debug('Mobile after trigger fired: ' + t.Mobile__c);
    // Test that the trigger correctly updated the mobile phone
    System.assertNotEquals('', t.Mobile__c);
    }
    }

     
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