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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
/* import-globals-from ../../mochitest/role.js */
loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
/**
* Verify that we don't mutate the accessible tree when the the root
* element gets a new overflow style.
*/
addAccessibleTask(
`
<button>button</button>
`,
async function testNoMutateOnRootOverflow(browser, accDoc) {
const tree = {
DOCUMENT: [
{
// Body element gets a generic container.
TEXT_CONTAINER: [
{
PUSHBUTTON: [{ TEXT_LEAF: [] }],
},
],
},
],
};
testAccessibleTree(accDoc, tree);
await contentSpawnMutation(
browser,
{ unexpected: [[EVENT_REORDER, accDoc]] },
function () {
content.document.documentElement.style.overflow = "hidden";
}
);
},
{
contentDocBodyAttrs: { style: "overflow: auto;" },
}
);