This tests onSelect for textareas.
This also makes sure that the correct selection is restored when the element regains focus.
Calling focus on textarea
After focus: textarea selection start: 0 end: 0
Calling setSelectionRange on textarea
After setSelectionRange(5, 10): textarea selection start: 5 end: 10
Double clicking to make selection for textarea
After double clicking: textarea selection start: 5 end: 10
Calling blur on textarea
After blur: textarea selection start: 5 end: 10
Calling focus on textarea
After focus: textarea selection start: 5 end: 10
onselect fired for textarea