@isTest Static Void createAttachwithFiles(){

    //Create Task.
    Task t         = new Task();
    T.subject      = 'Creating Attachments';
    T.Description  = 'The Good, The Bad & The Ugly';
    t.Priority     = 'High';
    insert t;

    Attachment att = new Attachment();
    att.ParentId   = t.Id;
    Blob bodyBlob  = Blob.valueOf('Unit Test Attachment Body');
    att.body       = bodyBlob;
    att.Name       = 'attachHarry';
    Insert att;

}