blob: 0562c5ef822ddadd61d9e8177b6eabe73c1effce [file] [log] [blame]
<script src="../resources/js-test.js"></script>
<canvas id="canvas" tabindex="-1"></canvas>
<div id="console"></div>
description("This test makes sure that AccessibilityNodeObjects are properly detached when the node they point to is deleted.");
if (window.testRunner && window.accessibilityController) {
// Create an ordinary button on the page, focus it and get its accessibility role.
var button = document.createElement('button');
window.axElement = accessibilityController.focusedElement;
window.expectedButtonRole = axElement.role;
// Now remove the node from the tree and get the role of the detached accessibility object.
window.expectedDetachedRole = axElement.role;
shouldBeTrue("expectedButtonRole != expectedDetachedRole");
// This time create a button that's a child of a canvas element. It will be focusable but not rendered.
// In particular, this will create an AccessibilityNodeObject rather than an AccessibilityRenderObject.
var canvas = document.getElementById('canvas');
(function() {
var button = document.createElement('button');
// Note: focusing the button and using that to get its accessibility object creates an extra
// reference to the button and it won't get deleted when we want it to. So instead we focus the
// canvas and get its first child.
window.axElement = accessibilityController.focusedElement.childAtIndex(0);
window.canvasButtonRole = axElement.role;
shouldBe("canvasButtonRole", "expectedButtonRole");
// Now delete the node.
// Explicitly run garbage collection now; since there are no more references to the button,
// the node will be destroyed.
// Ensure that the accessibility object is detached by checking its role.
window.detachedCanvasButtonRole = axElement.role;
shouldBe("detachedCanvasButtonRole", "expectedDetachedRole");