// Combobox input with active descendant.
combobox.accessibilityAttributeNames.has(AXOwns)='yes'
combobox.accessibilityAttributeValue(AXOwns)=[:3]
// Combobox input with no selection container
combobox_no_descendant.accessibilityAttributeValue(AXOwns)=NULL
// Div with role combobox (does not support AXOwns).
div.accessibilityAttributeNames.has(AXOwns)='no'
// Input without role combobox (does support AXOwns)
input_not_combobox.accessibilityAttributeNames.has(AXOwns)='yes'