This test ensures that objects readonly status is updated after dynamically changing aria-readonly.

PASS: axElement.isAttributeSettable('AXValue') === true
Updating aria-readonly to true.
PASS: axElement.isAttributeSettable('AXValue') === false
Updating aria-readonly to false.
PASS: axElement.isAttributeSettable('AXValue') === true

PASS successfullyParsed is true

TEST COMPLETE