This test ensures that aria-orientation works correctly and the implicit defaults are defined on different roles.

PASS: slider.orientation === 'AXOrientation: AXHorizontalOrientation'
PASS: combobox.orientation === 'AXOrientation: AXUnknownOrientation'
PASS: listbox.orientation === 'AXOrientation: AXVerticalOrientation'
PASS: menu.orientation === 'AXOrientation: AXVerticalOrientation'
PASS: menubar.orientation === 'AXOrientation: AXHorizontalOrientation'
PASS: radiogroup.orientation === 'AXOrientation: AXUnknownOrientation'
PASS: separator.orientation === 'AXOrientation: AXHorizontalOrientation'
PASS: tablist.orientation === 'AXOrientation: AXHorizontalOrientation'
PASS: toolbar.orientation === 'AXOrientation: AXHorizontalOrientation'
PASS: tree.orientation === 'AXOrientation: AXVerticalOrientation'
PASS: treegrid.orientation === 'AXOrientation: AXUnknownOrientation'
PASS: radiogroup2.orientation === 'AXOrientation: AXVerticalOrientation'
PASS: treegrid2.orientation === 'AXOrientation: AXHorizontalOrientation'
PASS: separator2.orientation === 'AXOrientation: AXUnknownOrientation'
PASS: slider2.orientation === 'AXOrientation: AXUnknownOrientation'
PASS: listbox2.orientation === 'AXOrientation: AXHorizontalOrientation'
PASS: listboxDisplayContents.orientation === 'AXOrientation: AXVerticalOrientation'

Updating #listbox-display-contents aria-orientation to horizontal.
PASS: listboxDisplayContents.orientation === 'AXOrientation: AXHorizontalOrientation'

PASS successfullyParsed is true

TEST COMPLETE