From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. 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create mode 100644 accessible/tests/browser/scroll/browser_test_scroll_bounds.js create mode 100644 accessible/tests/browser/scroll/browser_test_scroll_substring.js create mode 100644 accessible/tests/browser/scroll/browser_test_zoom_text.js create mode 100644 accessible/tests/browser/scroll/head.js create mode 100644 accessible/tests/browser/selectable/browser.ini create mode 100644 accessible/tests/browser/selectable/browser_test_aria_select.js create mode 100644 accessible/tests/browser/selectable/browser_test_select.js create mode 100644 accessible/tests/browser/selectable/head.js create mode 100644 accessible/tests/browser/shared-head.js create mode 100644 accessible/tests/browser/states/browser.ini create mode 100644 accessible/tests/browser/states/browser_test_link.js create mode 100644 accessible/tests/browser/states/browser_test_select_visibility.js create mode 100644 accessible/tests/browser/states/browser_test_visibility.js create mode 100644 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accessible/tests/browser/tree/browser_aria_owns.js create mode 100644 accessible/tests/browser/tree/browser_browser_element.js create mode 100644 accessible/tests/browser/tree/browser_css_content_visibility.js create mode 100644 accessible/tests/browser/tree/browser_general.js create mode 100644 accessible/tests/browser/tree/browser_lazy_tabs.js create mode 100644 accessible/tests/browser/tree/browser_searchbar.js create mode 100644 accessible/tests/browser/tree/browser_shadowdom.js create mode 100644 accessible/tests/browser/tree/browser_test_nsIAccessibleDocument_URL.js create mode 100644 accessible/tests/browser/tree/head.js (limited to 'accessible/tests/browser') diff --git a/accessible/tests/browser/.eslintrc.js b/accessible/tests/browser/.eslintrc.js new file mode 100644 index 0000000000..528797cb91 --- /dev/null +++ b/accessible/tests/browser/.eslintrc.js @@ -0,0 +1,28 @@ +"use strict"; + +module.exports = { + rules: { + "mozilla/no-aArgs": "error", + "mozilla/reject-importGlobalProperties": ["error", "everything"], + "mozilla/var-only-at-top-level": "error", + + "block-scoped-var": "error", + camelcase: ["error", { properties: "never" }], + complexity: ["error", 20], + + "handle-callback-err": ["error", "er"], + "max-nested-callbacks": ["error", 4], + "new-cap": ["error", { capIsNew: false }], + "no-fallthrough": "error", + "no-multi-str": "error", + "no-proto": "error", + "no-return-assign": "error", + "no-shadow": "error", + "no-unused-vars": ["error", { vars: "all", args: "none" }], + "one-var": ["error", "never"], + radix: "error", + strict: ["error", "global"], + yoda: "error", + "no-undef-init": "error", + }, +}; diff --git a/accessible/tests/browser/Common.sys.mjs b/accessible/tests/browser/Common.sys.mjs new file mode 100644 index 0000000000..466a0d2b99 --- /dev/null +++ b/accessible/tests/browser/Common.sys.mjs @@ -0,0 +1,451 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +import { Assert } from "resource://testing-common/Assert.sys.mjs"; + +const MAX_TRIM_LENGTH = 100; + +export const CommonUtils = { + /** + * Constant passed to getAccessible to indicate that it shouldn't fail if + * there is no accessible. + */ + DONOTFAIL_IF_NO_ACC: 1, + + /** + * Constant passed to getAccessible to indicate that it shouldn't fail if it + * does not support an interface. + */ + DONOTFAIL_IF_NO_INTERFACE: 2, + + /** + * nsIAccessibilityService service. + */ + get accService() { + if (!this._accService) { + this._accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + } + + return this._accService; + }, + + clearAccService() { + this._accService = null; + Cu.forceGC(); + }, + + /** + * Adds an observer for an 'a11y-consumers-changed' event. + */ + addAccConsumersChangedObserver() { + const deferred = {}; + this._accConsumersChanged = new Promise(resolve => { + deferred.resolve = resolve; + }); + const observe = (subject, topic, data) => { + Services.obs.removeObserver(observe, "a11y-consumers-changed"); + deferred.resolve(JSON.parse(data)); + }; + Services.obs.addObserver(observe, "a11y-consumers-changed"); + }, + + /** + * Returns a promise that resolves when 'a11y-consumers-changed' event is + * fired. + * + * @return {Promise} + * event promise evaluating to event's data + */ + observeAccConsumersChanged() { + return this._accConsumersChanged; + }, + + /** + * Adds an observer for an 'a11y-init-or-shutdown' event with a value of "1" + * which indicates that an accessibility service is initialized in the current + * process. + */ + addAccServiceInitializedObserver() { + const deferred = {}; + this._accServiceInitialized = new Promise((resolve, reject) => { + deferred.resolve = resolve; + deferred.reject = reject; + }); + const observe = (subject, topic, data) => { + if (data === "1") { + Services.obs.removeObserver(observe, "a11y-init-or-shutdown"); + deferred.resolve(); + } else { + deferred.reject("Accessibility service is shutdown unexpectedly."); + } + }; + Services.obs.addObserver(observe, "a11y-init-or-shutdown"); + }, + + /** + * Returns a promise that resolves when an accessibility service is + * initialized in the current process. Otherwise (if the service is shutdown) + * the promise is rejected. + */ + observeAccServiceInitialized() { + return this._accServiceInitialized; + }, + + /** + * Adds an observer for an 'a11y-init-or-shutdown' event with a value of "0" + * which indicates that an accessibility service is shutdown in the current + * process. + */ + addAccServiceShutdownObserver() { + const deferred = {}; + this._accServiceShutdown = new Promise((resolve, reject) => { + deferred.resolve = resolve; + deferred.reject = reject; + }); + const observe = (subject, topic, data) => { + if (data === "0") { + Services.obs.removeObserver(observe, "a11y-init-or-shutdown"); + deferred.resolve(); + } else { + deferred.reject("Accessibility service is initialized unexpectedly."); + } + }; + Services.obs.addObserver(observe, "a11y-init-or-shutdown"); + }, + + /** + * Returns a promise that resolves when an accessibility service is shutdown + * in the current process. Otherwise (if the service is initialized) the + * promise is rejected. + */ + observeAccServiceShutdown() { + return this._accServiceShutdown; + }, + + /** + * Extract DOMNode id from an accessible. If the accessible is in the remote + * process, DOMNode is not present in parent process. However, if specified by + * the author, DOMNode id will be attached to an accessible object. + * + * @param {nsIAccessible} accessible accessible + * @return {String?} DOMNode id if available + */ + getAccessibleDOMNodeID(accessible) { + if (accessible instanceof Ci.nsIAccessibleDocument) { + // If accessible is a document, trying to find its document body id. + try { + return accessible.DOMNode.body.id; + } catch (e) { + /* This only works if accessible is not a proxy. */ + } + } + try { + return accessible.DOMNode.id; + } catch (e) { + /* This will fail if DOMNode is in different process. */ + } + try { + // When e10s is enabled, accessible will have an "id" property if its + // corresponding DOMNode has an id. If accessible is a document, its "id" + // property corresponds to the "id" of its body element. + return accessible.id; + } catch (e) { + /* This will fail if accessible is not a proxy. */ + } + + return null; + }, + + getObjAddress(obj) { + const exp = /native\s*@\s*(0x[a-f0-9]+)/g; + const match = exp.exec(obj.toString()); + if (match) { + return match[1]; + } + + return obj.toString(); + }, + + getNodePrettyName(node) { + try { + let tag = ""; + if (node.nodeType == Node.DOCUMENT_NODE) { + tag = "document"; + } else { + tag = node.localName; + if (node.nodeType == Node.ELEMENT_NODE && node.hasAttribute("id")) { + tag += `@id="${node.getAttribute("id")}"`; + } + } + + return `"${tag} node", address: ${this.getObjAddress(node)}`; + } catch (e) { + return `" no node info "`; + } + }, + + /** + * Convert role to human readable string. + */ + roleToString(role) { + return this.accService.getStringRole(role); + }, + + /** + * Shorten a long string if it exceeds MAX_TRIM_LENGTH. + * + * @param aString the string to shorten. + * + * @returns the shortened string. + */ + shortenString(str) { + if (str.length <= MAX_TRIM_LENGTH) { + return str; + } + + // Trim the string if its length is > MAX_TRIM_LENGTH characters. + const trimOffset = MAX_TRIM_LENGTH / 2; + + return `${str.substring(0, trimOffset - 1)}…${str.substring( + str.length - trimOffset, + str.length + )}`; + }, + + normalizeAccTreeObj(obj) { + const key = Object.keys(obj)[0]; + const roleName = `ROLE_${key}`; + if (roleName in Ci.nsIAccessibleRole) { + return { + role: Ci.nsIAccessibleRole[roleName], + children: obj[key], + }; + } + + return obj; + }, + + stringifyTree(obj) { + let text = this.roleToString(obj.role) + ": [ "; + if ("children" in obj) { + for (let i = 0; i < obj.children.length; i++) { + const c = this.normalizeAccTreeObj(obj.children[i]); + text += this.stringifyTree(c); + if (i < obj.children.length - 1) { + text += ", "; + } + } + } + + return `${text}] `; + }, + + /** + * Return pretty name for identifier, it may be ID, DOM node or accessible. + */ + prettyName(identifier) { + if (identifier instanceof Array) { + let msg = ""; + for (let idx = 0; idx < identifier.length; idx++) { + if (msg != "") { + msg += ", "; + } + + msg += this.prettyName(identifier[idx]); + } + return msg; + } + + if (identifier instanceof Ci.nsIAccessible) { + const acc = this.getAccessible(identifier); + const domID = this.getAccessibleDOMNodeID(acc); + let msg = "["; + try { + if (Services.appinfo.browserTabsRemoteAutostart) { + if (domID) { + msg += `DOM node id: ${domID}, `; + } + } else { + msg += `${this.getNodePrettyName(acc.DOMNode)}, `; + } + msg += `role: ${this.roleToString(acc.role)}`; + if (acc.name) { + msg += `, name: "${this.shortenString(acc.name)}"`; + } + } catch (e) { + msg += "defunct"; + } + + if (acc) { + msg += `, address: ${this.getObjAddress(acc)}`; + } + msg += "]"; + + return msg; + } + + if (Node.isInstance(identifier)) { + return `[ ${this.getNodePrettyName(identifier)} ]`; + } + + if (identifier && typeof identifier === "object") { + const treeObj = this.normalizeAccTreeObj(identifier); + if ("role" in treeObj) { + return `{ ${this.stringifyTree(treeObj)} }`; + } + + return JSON.stringify(identifier); + } + + return ` "${identifier}" `; + }, + + /** + * Return accessible for the given identifier (may be ID attribute or DOM + * element or accessible object) or null. + * + * @param accOrElmOrID + * identifier to get an accessible implementing the given interfaces + * @param aInterfaces + * [optional] the interface or an array interfaces to query it/them + * from obtained accessible + * @param elmObj + * [optional] object to store DOM element which accessible is obtained + * for + * @param doNotFailIf + * [optional] no error for special cases (see DONOTFAIL_IF_NO_ACC, + * DONOTFAIL_IF_NO_INTERFACE) + * @param doc + * [optional] document for when accOrElmOrID is an ID. + */ + getAccessible(accOrElmOrID, interfaces, elmObj, doNotFailIf, doc) { + if (!accOrElmOrID) { + return null; + } + + let elm = null; + if (accOrElmOrID instanceof Ci.nsIAccessible) { + try { + elm = accOrElmOrID.DOMNode; + } catch (e) {} + } else if (Node.isInstance(accOrElmOrID)) { + elm = accOrElmOrID; + } else { + elm = doc.getElementById(accOrElmOrID); + if (!elm) { + Assert.ok(false, `Can't get DOM element for ${accOrElmOrID}`); + return null; + } + } + + if (elmObj && typeof elmObj == "object") { + elmObj.value = elm; + } + + let acc = accOrElmOrID instanceof Ci.nsIAccessible ? accOrElmOrID : null; + if (!acc) { + try { + acc = this.accService.getAccessibleFor(elm); + } catch (e) {} + + if (!acc) { + if (!(doNotFailIf & this.DONOTFAIL_IF_NO_ACC)) { + Assert.ok( + false, + `Can't get accessible for ${this.prettyName(accOrElmOrID)}` + ); + } + + return null; + } + } + + if (!interfaces) { + return acc; + } + + if (!(interfaces instanceof Array)) { + interfaces = [interfaces]; + } + + for (let index = 0; index < interfaces.length; index++) { + if (acc instanceof interfaces[index]) { + continue; + } + + try { + acc.QueryInterface(interfaces[index]); + } catch (e) { + if (!(doNotFailIf & this.DONOTFAIL_IF_NO_INTERFACE)) { + Assert.ok( + false, + `Can't query ${interfaces[index]} for ${accOrElmOrID}` + ); + } + + return null; + } + } + + return acc; + }, + + /** + * Return the DOM node by identifier (may be accessible, DOM node or ID). + */ + getNode(accOrNodeOrID, doc) { + if (!accOrNodeOrID) { + return null; + } + + if (Node.isInstance(accOrNodeOrID)) { + return accOrNodeOrID; + } + + if (accOrNodeOrID instanceof Ci.nsIAccessible) { + return accOrNodeOrID.DOMNode; + } + + const node = doc.getElementById(accOrNodeOrID); + if (!node) { + Assert.ok(false, `Can't get DOM element for ${accOrNodeOrID}`); + return null; + } + + return node; + }, + + /** + * Return root accessible. + * + * @param {DOMNode} doc + * Chrome document. + * + * @return {nsIAccessible} + * Accessible object for chrome window. + */ + getRootAccessible(doc) { + const acc = this.getAccessible(doc); + return acc ? acc.rootDocument.QueryInterface(Ci.nsIAccessible) : null; + }, + + /** + * Analogy of SimpleTest.is function used to compare objects. + */ + isObject(obj, expectedObj, msg) { + if (obj == expectedObj) { + Assert.ok(true, msg); + return; + } + + Assert.ok( + false, + `${msg} - got "${this.prettyName(obj)}", expected "${this.prettyName( + expectedObj + )}"` + ); + }, +}; diff --git a/accessible/tests/browser/Layout.sys.mjs b/accessible/tests/browser/Layout.sys.mjs new file mode 100644 index 0000000000..15b0060717 --- /dev/null +++ b/accessible/tests/browser/Layout.sys.mjs @@ -0,0 +1,178 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +import { Assert } from "resource://testing-common/Assert.sys.mjs"; + +import { CommonUtils } from "chrome://mochitests/content/browser/accessible/tests/browser/Common.sys.mjs"; + +export const Layout = { + /** + * Zoom the given document. + */ + zoomDocument(doc, zoom) { + const bc = BrowsingContext.getFromWindow(doc.defaultView); + // To mirror the behaviour of the UI, we set the zoom + // value on the top level browsing context. This value automatically + // propagates down to iframes. + bc.top.fullZoom = zoom; + }, + + /** + * Set the relative resolution of this document. This is what apz does. + * On non-mobile platforms you won't see a visible change. + */ + setResolution(doc, zoom) { + const windowUtils = doc.defaultView.windowUtils; + windowUtils.setResolutionAndScaleTo(zoom); + }, + + /** + * Assert.is() function checking the expected value is within the range. + */ + isWithin(expected, got, within, msg) { + if (Math.abs(got - expected) <= within) { + Assert.ok(true, `${msg} - Got ${got}`); + } else { + Assert.ok( + false, + `${msg} - Got ${got}, expected ${expected} with error of ${within}` + ); + } + }, + + /** + * Return the accessible coordinates relative to the screen in device pixels. + */ + getPos(id) { + const accessible = CommonUtils.getAccessible(id); + const x = {}; + const y = {}; + accessible.getBounds(x, y, {}, {}); + + return [x.value, y.value]; + }, + + /** + * Return the accessible coordinates and size relative to the screen in device + * pixels. This methods also retrieves coordinates in CSS pixels and ensures that they + * match Dev pixels with a given device pixel ratio. + */ + getBounds(id, dpr) { + const accessible = CommonUtils.getAccessible(id); + const x = {}; + const y = {}; + const width = {}; + const height = {}; + const xInCSS = {}; + const yInCSS = {}; + const widthInCSS = {}; + const heightInCSS = {}; + accessible.getBounds(x, y, width, height); + accessible.getBoundsInCSSPixels(xInCSS, yInCSS, widthInCSS, heightInCSS); + + this.isWithin( + x.value / dpr, + xInCSS.value, + 1, + "X in CSS pixels is calculated correctly" + ); + this.isWithin( + y.value / dpr, + yInCSS.value, + 1, + "Y in CSS pixels is calculated correctly" + ); + this.isWithin( + width.value / dpr, + widthInCSS.value, + 1, + "Width in CSS pixels is calculated correctly" + ); + this.isWithin( + height.value / dpr, + heightInCSS.value, + 1, + "Height in CSS pixels is calculated correctly" + ); + + return [x.value, y.value, width.value, height.value]; + }, + + getRangeExtents(id, startOffset, endOffset, coordOrigin) { + const hyperText = CommonUtils.getAccessible(id, [Ci.nsIAccessibleText]); + const x = {}; + const y = {}; + const width = {}; + const height = {}; + hyperText.getRangeExtents( + startOffset, + endOffset, + x, + y, + width, + height, + coordOrigin + ); + + return [x.value, y.value, width.value, height.value]; + }, + + CSSToDevicePixels(win, x, y, width, height) { + const ratio = win.devicePixelRatio; + + // CSS pixels and ratio can be not integer. Device pixels are always integer. + // Do our best and hope it works. + return [ + Math.round(x * ratio), + Math.round(y * ratio), + Math.round(width * ratio), + Math.round(height * ratio), + ]; + }, + + /** + * Return DOM node coordinates relative the screen and its size in device + * pixels. + */ + getBoundsForDOMElm(id, doc) { + let x = 0; + let y = 0; + let width = 0; + let height = 0; + + const elm = CommonUtils.getNode(id, doc); + const elmWindow = elm.ownerGlobal; + if (elm.localName == "area") { + const mapName = elm.parentNode.getAttribute("name"); + const selector = `[usemap="#${mapName}"]`; + const img = elm.ownerDocument.querySelector(selector); + + const areaCoords = elm.coords.split(","); + const areaX = parseInt(areaCoords[0], 10); + const areaY = parseInt(areaCoords[1], 10); + const areaWidth = parseInt(areaCoords[2], 10) - areaX; + const areaHeight = parseInt(areaCoords[3], 10) - areaY; + + const rect = img.getBoundingClientRect(); + x = rect.left + areaX; + y = rect.top + areaY; + width = areaWidth; + height = areaHeight; + } else { + const rect = elm.getBoundingClientRect(); + x = rect.left; + y = rect.top; + width = rect.width; + height = rect.height; + } + + return this.CSSToDevicePixels( + elmWindow, + x + elmWindow.mozInnerScreenX, + y + elmWindow.mozInnerScreenY, + width, + height + ); + }, +}; diff --git a/accessible/tests/browser/bounds/browser.ini b/accessible/tests/browser/bounds/browser.ini new file mode 100644 index 0000000000..078659a97d --- /dev/null +++ b/accessible/tests/browser/bounds/browser.ini @@ -0,0 +1,27 @@ +[DEFAULT] +subsuite = a11y +support-files = + head.js + !/accessible/tests/browser/shared-head.js + !/accessible/tests/browser/*.jsm + !/accessible/tests/mochitest/*.js + !/accessible/tests/mochitest/letters.gif +prefs = + javascript.options.asyncstack_capture_debuggee_only=false + +[browser_accessible_moved.js] +[browser_caret_rect.js] +[browser_position.js] +[browser_test_resolution.js] +skip-if = os == 'win' # bug 1372296 +[browser_test_zoom.js] +skip-if = true # Bug 1734271 +[browser_test_zoom_text.js] +https_first_disabled = true +skip-if = os == 'win' # bug 1372296 +[browser_zero_area.js] +[browser_test_display_contents.js] +[browser_test_simple_transform.js] +[browser_test_iframe_transform.js] +skip-if = + os == "win" && os_version == "6.1" # Skip on Azure - frequent failure diff --git a/accessible/tests/browser/bounds/browser_accessible_moved.js b/accessible/tests/browser/bounds/browser_accessible_moved.js new file mode 100644 index 0000000000..307c680000 --- /dev/null +++ b/accessible/tests/browser/bounds/browser_accessible_moved.js @@ -0,0 +1,49 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +function assertBoundsNonZero(acc) { + // XXX We don't use getBounds because it uses BoundsInCSSPixels(), but that + // isn't implemented for the cache yet. + let x = {}; + let y = {}; + let width = {}; + let height = {}; + acc.getBounds(x, y, width, height); + ok(x.value > 0, "x is non-0"); + ok(y.value > 0, "y is non-0"); + ok(width.value > 0, "width is non-0"); + ok(height.value > 0, "height is non-0"); +} + +/** + * Test that bounds aren't 0 after an Accessible is moved (but not re-created). + */ +addAccessibleTask( + ` +
+ `, + async function (browser, docAcc) { + let button = findAccessibleChildByID(docAcc, "button"); + assertBoundsNonZero(button); + + const root = findAccessibleChildByID(docAcc, "root"); + let reordered = waitForEvent(EVENT_REORDER, root); + // scrollable wasn't in the a11y tree, but this will force it to be created. + // button will be moved inside it. + await invokeContentTask(browser, [], () => { + content.document.getElementById("scrollable").style.overflow = "scroll"; + }); + await reordered; + + const scrollable = findAccessibleChildByID(docAcc, "scrollable"); + assertBoundsNonZero(scrollable); + // XXX button's RemoteAccessible was recreated, so we have to fetch it + // again. This shouldn't be necessary once bug 1739050 is fixed. + button = findAccessibleChildByID(docAcc, "button"); + assertBoundsNonZero(button); + }, + { topLevel: true, iframe: true, remoteIframe: true } +); diff --git a/accessible/tests/browser/bounds/browser_caret_rect.js b/accessible/tests/browser/bounds/browser_caret_rect.js new file mode 100644 index 0000000000..ac0ee3aa50 --- /dev/null +++ b/accessible/tests/browser/bounds/browser_caret_rect.js @@ -0,0 +1,140 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +async function getCaretRect(browser, id) { + // The caret rect can only be queried on LocalAccessible. On Windows, we do + // send it across processes with caret events, but this currently can't be + // queried outside of the event, nor with XPCOM. + const [x, y, w, h] = await invokeContentTask(browser, [id], contentId => { + const node = content.document.getElementById(contentId); + const contentAcc = content.CommonUtils.accService.getAccessibleFor(node); + contentAcc.QueryInterface(Ci.nsIAccessibleText); + const caretX = {}; + const caretY = {}; + const caretW = {}; + const caretH = {}; + contentAcc.getCaretRect(caretX, caretY, caretW, caretH); + return [caretX.value, caretY.value, caretW.value, caretH.value]; + }); + info(`Caret bounds: ${x}, ${y}, ${w}, ${h}`); + return [x, y, w, h]; +} + +async function testCaretRect(browser, docAcc, id, offset) { + const acc = findAccessibleChildByID(docAcc, id, [nsIAccessibleText]); + is(acc.caretOffset, offset, `Caret at offset ${offset}`); + const charX = {}; + const charY = {}; + const charW = {}; + const charH = {}; + const atEnd = offset == acc.characterCount; + const empty = offset == 0 && atEnd; + const queryOffset = atEnd && !empty ? offset - 1 : offset; + acc.getCharacterExtents( + queryOffset, + charX, + charY, + charW, + charH, + COORDTYPE_SCREEN_RELATIVE + ); + info( + `Character ${queryOffset} bounds: ${charX.value}, ${charY.value}, ${charW.value}, ${charH.value}` + ); + const [caretX, caretY, caretW, caretH] = await getCaretRect(browser, id); + if (atEnd) { + ok(caretX > charX.value, "Caret x after last character x"); + } else { + is(caretX, charX.value, "Caret x same as character x"); + } + is(caretY, charY.value, "Caret y same as character y"); + is(caretW, 1, "Caret width is 1"); + if (!empty) { + is(caretH, charH.value, "Caret height same as character height"); + } +} + +function getAccBounds(acc) { + const x = {}; + const y = {}; + const w = {}; + const h = {}; + acc.getBounds(x, y, w, h); + return [x.value, y.value, w.value, h.value]; +} + +/** + * Test the caret rect in content documents. + */ +addAccessibleTask( + ` + + + `, + async function (browser, docAcc) { + async function runTests() { + const input = findAccessibleChildByID(docAcc, "input", [ + nsIAccessibleText, + ]); + info("Focusing input"); + let caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, input); + input.takeFocus(); + await caretMoved; + await testCaretRect(browser, docAcc, "input", 0); + info("Setting caretOffset to 1"); + caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, input); + input.caretOffset = 1; + await caretMoved; + await testCaretRect(browser, docAcc, "input", 1); + info("Setting caretOffset to 2"); + caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, input); + input.caretOffset = 2; + await caretMoved; + await testCaretRect(browser, docAcc, "input", 2); + info("Resetting caretOffset to 0"); + input.caretOffset = 0; + + const emptyInput = findAccessibleChildByID(docAcc, "emptyInput", [ + nsIAccessibleText, + ]); + info("Focusing emptyInput"); + caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, emptyInput); + emptyInput.takeFocus(); + await caretMoved; + await testCaretRect(browser, docAcc, "emptyInput", 0); + } + + await runTests(); + + // Check that the caret rect is correct when the title bar is shown. + if (LINUX || Services.env.get("MOZ_HEADLESS")) { + // Disabling tabs in title bar doesn't change the bounds on Linux or in + // headless mode. + info("Skipping title bar tests"); + return; + } + const [, origDocY] = getAccBounds(docAcc); + info("Showing title bar"); + let titleBarChanged = BrowserTestUtils.waitForMutationCondition( + document.documentElement, + { attributes: true, attributeFilter: ["tabsintitlebar"] }, + () => !document.documentElement.hasAttribute("tabsintitlebar") + ); + await SpecialPowers.pushPrefEnv({ + set: [["browser.tabs.inTitlebar", false]], + }); + await titleBarChanged; + const [, newDocY] = getAccBounds(docAcc); + Assert.greater( + newDocY, + origDocY, + "Doc has larger y after title bar change" + ); + await runTests(); + await SpecialPowers.popPrefEnv(); + }, + { chrome: true, topLevel: true } +); diff --git a/accessible/tests/browser/bounds/browser_position.js b/accessible/tests/browser/bounds/browser_position.js new file mode 100644 index 0000000000..18de7d8a76 --- /dev/null +++ b/accessible/tests/browser/bounds/browser_position.js @@ -0,0 +1,103 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/* import-globals-from ../../mochitest/role.js */ +loadScripts({ name: "role.js", dir: MOCHITESTS_DIR }); + +/** + * Test changing the left/top CSS properties. + */ +addAccessibleTask( + ` +
+ test +
+ `, + async function (browser, docAcc) { + await testBoundsWithContent(docAcc, "div", browser); + info("Changing left"); + await invokeContentTask(browser, [], () => { + content.document.getElementById("div").style.left = "200px"; + }); + await waitForContentPaint(browser); + await testBoundsWithContent(docAcc, "div", browser); + info("Changing top"); + await invokeContentTask(browser, [], () => { + content.document.getElementById("div").style.top = "200px"; + }); + await waitForContentPaint(browser); + await testBoundsWithContent(docAcc, "div", browser); + }, + { chrome: true, topLevel: true, iframe: true } +); + +/** + * Test moving one element by inserting a second element before it such that the + * second element doesn't reflow. + */ +addAccessibleTask( + ` +
+

1

+ +

3

+
+

noReflow

+ `, + async function (browser, docAcc) { + for (const id of ["reflowContainer", "reflow3", "noReflow"]) { + await testBoundsWithContent(docAcc, id, browser); + } + // Show p2, which will reflow everything inside "reflowContainer", but just + // move "noReflow" down without reflowing it. + info("Showing p2"); + let shown = waitForEvent(EVENT_SHOW, "reflow2"); + await invokeContentTask(browser, [], () => { + content.document.getElementById("reflow2").hidden = false; + }); + await waitForContentPaint(browser); + await shown; + for (const id of ["reflowContainer", "reflow2", "reflow3", "noReflow"]) { + await testBoundsWithContent(docAcc, id, browser); + } + }, + { chrome: true, topLevel: true, remoteIframe: true } +); + +/** + * Test bounds when an Accessible is re-parented. + */ +addAccessibleTask( + ` +
+

1

+
+

2

+
+
+ `, + async function (browser, docAcc) { + const paraTree = { PARAGRAPH: [{ TEXT_LEAF: [] }] }; + const container = findAccessibleChildByID(docAcc, "container"); + testAccessibleTree(container, { SECTION: [paraTree, paraTree] }); + await testBoundsWithContent(docAcc, "p2", browser); + // Add a click listener to the div containing p2. This will cause an + // Accessible to be created for that div, which didn't have one before. + info("Adding click listener to pParent"); + let reordered = waitForEvent(EVENT_REORDER, container); + await invokeContentTask(browser, [], () => { + content.document + .querySelector(".pParent") + .addEventListener("click", function () {}); + }); + await reordered; + testAccessibleTree(container, { + SECTION: [paraTree, { SECTION: [paraTree] }], + }); + await testBoundsWithContent(docAcc, "p2", browser); + }, + { chrome: true, topLevel: true, remoteIframe: true } +); diff --git a/accessible/tests/browser/bounds/browser_test_display_contents.js b/accessible/tests/browser/bounds/browser_test_display_contents.js new file mode 100644 index 0000000000..db1bfce178 --- /dev/null +++ b/accessible/tests/browser/bounds/browser_test_display_contents.js @@ -0,0 +1,44 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/* import-globals-from ../../mochitest/layout.js */ + +async function testContentBounds(browser, acc) { + let [expectedX, expectedY, expectedWidth, expectedHeight] = + await getContentBoundsForDOMElm(browser, getAccessibleDOMNodeID(acc)); + + let contentDPR = await getContentDPR(browser); + let [x, y, width, height] = getBounds(acc, contentDPR); + let prettyAccName = prettyName(acc); + is(x, expectedX, "Wrong x coordinate of " + prettyAccName); + is(y, expectedY, "Wrong y coordinate of " + prettyAccName); + is(width, expectedWidth, "Wrong width of " + prettyAccName); + ok(height >= expectedHeight, "Wrong height of " + prettyAccName); +} + +async function runTests(browser, accDoc) { + let p = findAccessibleChildByID(accDoc, "div"); + let p2 = findAccessibleChildByID(accDoc, "p"); + + await testContentBounds(browser, p); + await testContentBounds(browser, p2); +} + +/** + * Test accessible bounds for accs with display:contents + */ +addAccessibleTask( + ` +
before +
    +
  • +

    item

    +
    • +
+
`, + runTests, + { iframe: true, remoteIframe: true } +); diff --git a/accessible/tests/browser/bounds/browser_test_iframe_transform.js b/accessible/tests/browser/bounds/browser_test_iframe_transform.js new file mode 100644 index 0000000000..a44ab75faf --- /dev/null +++ b/accessible/tests/browser/bounds/browser_test_iframe_transform.js @@ -0,0 +1,209 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +const TRANSLATION_OFFSET = 50; +const ELEM_ID = "test-elem-id"; + +// Modify the style of an iframe within the content process. This is different +// from, e.g., invokeSetStyle, because this function doesn't rely on +// invokeContentTask, which runs in the context of the iframe itself. +async function invokeSetStyleIframe(browser, id, style, value) { + if (value) { + Logger.log(`Setting ${style} style to ${value} for iframe with id: ${id}`); + } else { + Logger.log(`Removing ${style} style from iframe with id: ${id}`); + } + + // Translate the iframe itself (not content within it). + await SpecialPowers.spawn( + browser, + [id, style, value], + (iframeId, iframeStyle, iframeValue) => { + const elm = content.document.getElementById(iframeId); + if (iframeValue) { + elm.style[iframeStyle] = iframeValue; + } else { + delete elm.style[iframeStyle]; + } + } + ); +} + +// Test the accessible's bounds, comparing them to the content bounds from DOM. +// This function also accepts an offset, which is necessary in some cases where +// DOM doesn't know about cross-process offsets. +function testBoundsWithOffset(browser, iframeDocAcc, id, domElmBounds, offset) { + // Get the bounds as reported by the accessible. + const acc = findAccessibleChildByID(iframeDocAcc, id); + const accX = {}; + const accY = {}; + const accWidth = {}; + const accHeight = {}; + acc.getBounds(accX, accY, accWidth, accHeight); + + // getContentBoundsForDOMElm's result doesn't include iframe translation + // for in-process iframes, but does for out-of-process iframes. To account + // for that here, manually add in the translation offset when examining an + // in-process iframe. + const addTranslationOffset = !gIsRemoteIframe; + const expectedX = addTranslationOffset + ? domElmBounds[0] + offset + : domElmBounds[0]; + const expectedY = addTranslationOffset + ? domElmBounds[1] + offset + : domElmBounds[1]; + const expectedWidth = domElmBounds[2]; + const expectedHeight = domElmBounds[3]; + + let boundsAreEquivalent = true; + boundsAreEquivalent &&= accX.value == expectedX; + boundsAreEquivalent &&= accY.value == expectedY; + boundsAreEquivalent &&= accWidth.value == expectedWidth; + boundsAreEquivalent &&= accHeight.value == expectedHeight; + return boundsAreEquivalent; +} + +addAccessibleTask( + `
hello world
`, + async function (browser, iframeDocAcc, contentDocAcc) { + ok(iframeDocAcc, "IFRAME document accessible is present"); + + await testBoundsWithContent(iframeDocAcc, ELEM_ID, browser); + + // Translate the iframe, which should modify cross-process offset. + await invokeSetStyleIframe( + browser, + DEFAULT_IFRAME_ID, + "transform", + `translate(${TRANSLATION_OFFSET}px, ${TRANSLATION_OFFSET}px)` + ); + + // Allow content to advance to update DOM, then capture the DOM bounds. + await waitForContentPaint(browser); + const domElmBoundsAfterTranslate = await getContentBoundsForDOMElm( + browser, + ELEM_ID + ); + + // Ensure that there's enough time for the cache to update. + await untilCacheOk(() => { + return testBoundsWithOffset( + browser, + iframeDocAcc, + ELEM_ID, + domElmBoundsAfterTranslate, + TRANSLATION_OFFSET + ); + }, "Accessible bounds have changed in the cache and match DOM bounds."); + + // Adjust padding of the iframe, then verify bounds adjust properly. + // iframes already have a border by default, so we check padding here. + const PADDING_OFFSET = 100; + await invokeSetStyleIframe( + browser, + DEFAULT_IFRAME_ID, + "padding", + `${PADDING_OFFSET}px` + ); + + // Allow content to advance to update DOM, then capture the DOM bounds. + await waitForContentPaint(browser); + const domElmBoundsAfterAddingPadding = await getContentBoundsForDOMElm( + browser, + ELEM_ID + ); + + await untilCacheOk(() => { + return testBoundsWithOffset( + browser, + iframeDocAcc, + ELEM_ID, + domElmBoundsAfterAddingPadding, + TRANSLATION_OFFSET + ); + }, "Accessible bounds have changed in the cache and match DOM bounds."); + }, + { + topLevel: false, + iframe: true, + remoteIframe: true, + iframeAttrs: { + style: `height: 100px; width: 100px;`, + }, + } +); + +/** + * Test document bounds change notifications. + * Note: This uses iframes to change the doc container size in order + * to have the doc accessible's bounds change. + */ +addAccessibleTask( + `
`, + async function (browser, accDoc, foo) { + const docWidth = () => { + let width = {}; + accDoc.getBounds({}, {}, width, {}); + return width.value; + }; + + await untilCacheIs(docWidth, 0, "Doc width is 0"); + await invokeSetStyleIframe(browser, DEFAULT_IFRAME_ID, "width", `300px`); + await untilCacheIs(docWidth, 300, "Doc width is 300"); + }, + { + chrome: false, + topLevel: false, + iframe: true, + remoteIframe: true, + iframeAttrs: { style: "width: 0;" }, + } +); + +/** + * Test document bounds after re-creating an iframe. + */ +addAccessibleTask( + ` +
    + +
+ `, + async function (browser, docAcc) { + let iframeDoc = findAccessibleChildByID(docAcc, "iframe").firstChild; + ok(iframeDoc, "Got the iframe document"); + const origX = {}; + const origY = {}; + iframeDoc.getBounds(origX, origY, {}, {}); + let reordered = waitForEvent(EVENT_REORDER, docAcc); + await invokeContentTask(browser, [], () => { + // This will cause a bounds cache update to be queued for the iframe doc. + content.document.getElementById("iframe").width = "600"; + // This will recreate the ol a11y subtree, including the iframe. The + // iframe document will be unbound briefly while this happens. We want to + // be sure processing the bounds cache update queued above doesn't assert + // while the document is unbound. The setTimeout is necessary to get the + // cache update to happen at the right time. + content.setTimeout( + () => (content.document.getElementById("ol").type = "i"), + 0 + ); + }); + await reordered; + const iframe = findAccessibleChildByID(docAcc, "iframe"); + // We don't currently fire an event when a DocAccessible is re-bound to a new OuterDoc. + await BrowserTestUtils.waitForCondition(() => iframe.firstChild); + iframeDoc = iframe.firstChild; + ok(iframeDoc, "Got the iframe document after re-creation"); + const newX = {}; + const newY = {}; + iframeDoc.getBounds(newX, newY, {}, {}); + ok( + origX.value == newX.value && origY.value == newY.value, + "Iframe document x and y are same after iframe re-creation" + ); + } +); diff --git a/accessible/tests/browser/bounds/browser_test_resolution.js b/accessible/tests/browser/bounds/browser_test_resolution.js new file mode 100644 index 0000000000..0b0b47418d --- /dev/null +++ b/accessible/tests/browser/bounds/browser_test_resolution.js @@ -0,0 +1,72 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/* import-globals-from ../../mochitest/layout.js */ + +async function testScaledBounds(browser, accDoc, scale, id, type = "object") { + let acc = findAccessibleChildByID(accDoc, id); + + // Get document offset + let [docX, docY] = getBounds(accDoc); + + // Get the unscaled bounds of the accessible + let [x, y, width, height] = + type == "text" + ? getRangeExtents(acc, 0, -1, COORDTYPE_SCREEN_RELATIVE) + : getBounds(acc); + + await invokeContentTask(browser, [scale], _scale => { + const { Layout } = ChromeUtils.importESModule( + "chrome://mochitests/content/browser/accessible/tests/browser/Layout.sys.mjs" + ); + Layout.setResolution(content.document, _scale); + }); + + let [scaledX, scaledY, scaledWidth, scaledHeight] = + type == "text" + ? getRangeExtents(acc, 0, -1, COORDTYPE_SCREEN_RELATIVE) + : getBounds(acc); + + let name = prettyName(acc); + isWithin(scaledWidth, width * scale, 2, "Wrong scaled width of " + name); + isWithin(scaledHeight, height * scale, 2, "Wrong scaled height of " + name); + isWithin(scaledX - docX, (x - docX) * scale, 2, "Wrong scaled x of " + name); + isWithin(scaledY - docY, (y - docY) * scale, 2, "Wrong scaled y of " + name); + + await invokeContentTask(browser, [], () => { + const { Layout } = ChromeUtils.importESModule( + "chrome://mochitests/content/browser/accessible/tests/browser/Layout.sys.mjs" + ); + Layout.setResolution(content.document, 1.0); + }); +} + +async function runTests(browser, accDoc) { + // The scrollbars get in the way of container bounds calculation. + await SpecialPowers.pushPrefEnv({ + set: [["ui.useOverlayScrollbars", 1]], + }); + + await testScaledBounds(browser, accDoc, 2.0, "p1"); + await testScaledBounds(browser, accDoc, 0.5, "p2"); + await testScaledBounds(browser, accDoc, 3.5, "b1"); + + await testScaledBounds(browser, accDoc, 2.0, "p1", "text"); + await testScaledBounds(browser, accDoc, 0.75, "p2", "text"); +} + +/** + * Test accessible boundaries when page is zoomed + */ +addAccessibleTask( + ` +

Tilimilitryamdiya

+

para 2

+ +`, + runTests, + { iframe: true, remoteIframe: true } +); diff --git a/accessible/tests/browser/bounds/browser_test_simple_transform.js b/accessible/tests/browser/bounds/browser_test_simple_transform.js new file mode 100644 index 0000000000..7197968b40 --- /dev/null +++ b/accessible/tests/browser/bounds/browser_test_simple_transform.js @@ -0,0 +1,225 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +loadScripts({ name: "role.js", dir: MOCHITESTS_DIR }); + +// test basic translation +addAccessibleTask( + `

hello world

`, + async function (browser, iframeDocAcc, contentDocAcc) { + ok(iframeDocAcc, "IFRAME document accessible is present"); + await testBoundsWithContent(iframeDocAcc, "translate", browser); + + await invokeContentTask(browser, [], () => { + let p = content.document.getElementById("translate"); + p.style = "transform: translate(100px, 100px);"; + }); + + await waitForContentPaint(browser); + await testBoundsWithContent(iframeDocAcc, "translate", browser); + }, + { topLevel: true, iframe: true, remoteIframe: true } +); + +// Test translation with two children. +addAccessibleTask( + ` +
+

hello

+

world

+
+ `, + async function (browser, docAcc) { + await testBoundsWithContent(docAcc, "p1", browser); + await testBoundsWithContent(docAcc, "p2", browser); + }, + { topLevel: true, iframe: true, remoteIframe: true } +); + +// test basic rotation +addAccessibleTask( + `

hello world

`, + async function (browser, iframeDocAcc, contentDocAcc) { + ok(iframeDocAcc, "IFRAME document accessible is present"); + await testBoundsWithContent(iframeDocAcc, "rotate", browser); + + await invokeContentTask(browser, [], () => { + let p = content.document.getElementById("rotate"); + p.style = "transform: rotate(-40deg);"; + }); + + await waitForContentPaint(browser); + await testBoundsWithContent(iframeDocAcc, "rotate", browser); + }, + { topLevel: true, iframe: true, remoteIframe: true } +); + +// test basic scale +addAccessibleTask( + `

hello world

`, + async function (browser, iframeDocAcc, contentDocAcc) { + ok(iframeDocAcc, "IFRAME document accessible is present"); + await testBoundsWithContent(iframeDocAcc, "scale", browser); + + await invokeContentTask(browser, [], () => { + let p = content.document.getElementById("scale"); + p.style = "transform: scale(2);"; + }); + + await waitForContentPaint(browser); + await testBoundsWithContent(iframeDocAcc, "scale", browser); + }, + { topLevel: true, iframe: true, remoteIframe: true } +); + +// Test will-change: transform with no transform. +addAccessibleTask( + ` +
+

hello

+

world

+
+
+
+

hello

+

world

+
+
+ `, + async function (browser, docAcc) { + // Even though willChangeTop has no transform, it has + // will-change: transform, which means nsIFrame::IsTransformed returns + // true. We don't cache identity matrices, but because there is an offset + // to the root frame, layout includes this in the returned transform + // matrix. That means we get a non-identity matrix and thus we cache it. + // This is why we only test the identity matrix cache optimization for + // willChangeInner. + let hasTransform; + try { + const willChangeInner = findAccessibleChildByID( + docAcc, + "willChangeInner" + ); + willChangeInner.cache.getStringProperty("transform"); + hasTransform = true; + } catch (e) { + hasTransform = false; + } + ok(!hasTransform, "willChangeInner has no cached transform"); + await testBoundsWithContent(docAcc, "willChangeTopP2", browser); + await testBoundsWithContent(docAcc, "willChangeInnerP2", browser); + }, + { topLevel: true, iframe: true, remoteIframe: true } +); + +// Verify that a transform forces creation of an accessible. +addAccessibleTask( + ` +
+
+

test

+
+
+ + + `, + async function (browser, docAcc) { + const tree = { TEXT_CONTAINER: [{ PARAGRAPH: [{ TEXT_LEAF: [] }] }] }; + + const divWithTransform = findAccessibleChildByID( + docAcc, + "container" + ).firstChild; + testAccessibleTree(divWithTransform, tree); + // testBoundsWithContent takes an id, but divWithTransform doesn't have one, + // so we can't test the bounds for it. + + // An accessible should still be created, even if the role is "presentation." + const divPresentational = findAccessibleChildByID( + docAcc, + "div-presentational" + ); + testAccessibleTree(divPresentational, tree); + await testBoundsWithContent(docAcc, "div-presentational", browser); + }, + { topLevel: true, iframe: true, remoteIframe: true } +); + +// Verify that adding a transform on the fly forces creation of an accessible. +addAccessibleTask( + ` +
+

test

+
+ `, + async function (browser, docAcc) { + let divToTransform = findAccessibleChildByID(docAcc, "div-to-transform"); + ok(!divToTransform, "There should not be a div accessible."); + + // Translate the div. + await invokeContentTask(browser, [], () => { + let div = content.document.getElementById("div-to-transform"); + div.style.transform = "translate(100%, 100%)"; + }); + await waitForContentPaint(browser); + + // Verify that the SECTION accessible appeared after we gave it a transform. + divToTransform = findAccessibleChildByID(docAcc, "div-to-transform"); + const tree = { + TEXT_CONTAINER: [{ PARAGRAPH: [{ TEXT_LEAF: [] }] }], + }; + testAccessibleTree(divToTransform, tree); + + // Verify that the bounds of the div are correctly modified. + await testBoundsWithContent(docAcc, "div-to-transform", browser); + }, + { topLevel: true, iframe: true, remoteIframe: true } +); + +// Test translated, position: absolute Accessible in a container. +addAccessibleTask( + ` +
+
+

test

+
+
+ `, + async function (browser, docAcc) { + await testBoundsWithContent(docAcc, "transform", browser); + await testBoundsWithContent(docAcc, "p", browser); + }, + { topLevel: true, iframe: true, remoteIframe: true } +); + +// Test bounds of a rotated element after scroll. +addAccessibleTask( + ` +
+

hello world

+
+ `, + async function (browser, docAcc) { + info( + "Testing that the unscrolled bounds of a transformed element are correct." + ); + await testBoundsWithContent(docAcc, "test", browser); + + await invokeContentTask(browser, [], () => { + // Scroll the scrollable region down (scrolls up due to the transform). + let elem = content.document.getElementById("scrollable"); + elem.scrollTo(0, elem.scrollHeight); + }); + + info( + "Testing that the scrolled bounds of a transformed element are correct." + ); + await testBoundsWithContent(docAcc, "test", browser); + }, + { topLevel: true, iframe: true, remoteIframe: true } +); diff --git a/accessible/tests/browser/bounds/browser_test_zoom.js b/accessible/tests/browser/bounds/browser_test_zoom.js new file mode 100644 index 0000000000..ac84e485a4 --- /dev/null +++ b/accessible/tests/browser/bounds/browser_test_zoom.js @@ -0,0 +1,65 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/* import-globals-from ../../mochitest/layout.js */ + +async function testContentBounds(browser, acc) { + let [expectedX, expectedY, expectedWidth, expectedHeight] = + await getContentBoundsForDOMElm(browser, getAccessibleDOMNodeID(acc)); + + let contentDPR = await getContentDPR(browser); + let [x, y, width, height] = getBounds(acc, contentDPR); + let prettyAccName = prettyName(acc); + is(x, expectedX, "Wrong x coordinate of " + prettyAccName); + is(y, expectedY, "Wrong y coordinate of " + prettyAccName); + is(width, expectedWidth, "Wrong width of " + prettyAccName); + ok(height >= expectedHeight, "Wrong height of " + prettyAccName); +} + +async function runTests(browser, accDoc) { + let p1 = findAccessibleChildByID(accDoc, "p1"); + let p2 = findAccessibleChildByID(accDoc, "p2"); + let imgmap = findAccessibleChildByID(accDoc, "imgmap"); + if (!imgmap.childCount) { + // An image map may not be available even after the doc and image load + // is complete. We don't recieve any DOM events for this change either, + // so we need to wait for a REORDER. + await waitForEvent(EVENT_REORDER, "imgmap"); + } + let area = imgmap.firstChild; + + await testContentBounds(browser, p1); + await testContentBounds(browser, p2); + await testContentBounds(browser, area); + + await SpecialPowers.spawn(browser, [], () => { + const { Layout } = ChromeUtils.importESModule( + "chrome://mochitests/content/browser/accessible/tests/browser/Layout.sys.mjs" + ); + Layout.zoomDocument(content.document, 2.0); + }); + + await testContentBounds(browser, p1); + await testContentBounds(browser, p2); + await testContentBounds(browser, area); +} + +/** + * Test accessible boundaries when page is zoomed + */ +addAccessibleTask( + ` +

para 1

para 2

+ + mozilla.org + +`, + runTests, + { iframe: true, remoteIframe: true } +); diff --git a/accessible/tests/browser/bounds/browser_test_zoom_text.js b/accessible/tests/browser/bounds/browser_test_zoom_text.js new file mode 100644 index 0000000000..3f40b698bf --- /dev/null +++ b/accessible/tests/browser/bounds/browser_test_zoom_text.js @@ -0,0 +1,86 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/* import-globals-from ../../mochitest/layout.js */ + +async function runTests(browser, accDoc) { + async function testTextNode(id) { + let hyperTextNode = findAccessibleChildByID(accDoc, id); + let textNode = hyperTextNode.firstChild; + + let contentDPR = await getContentDPR(browser); + let [x, y, width, height] = getBounds(textNode, contentDPR); + testTextBounds( + hyperTextNode, + 0, + -1, + [x, y, width, height], + COORDTYPE_SCREEN_RELATIVE + ); + // A 0 range should return an empty rect. + testTextBounds( + hyperTextNode, + 0, + 0, + [0, 0, 0, 0], + COORDTYPE_SCREEN_RELATIVE + ); + } + + async function testEmptyInputNode(id) { + let inputNode = findAccessibleChildByID(accDoc, id); + + let [x, y, width, height] = getBounds(inputNode); + testTextBounds( + inputNode, + 0, + -1, + [x, y, width, height], + COORDTYPE_SCREEN_RELATIVE + ); + // A 0 range in an empty input should still return + // rect of input node. + testTextBounds( + inputNode, + 0, + 0, + [x, y, width, height], + COORDTYPE_SCREEN_RELATIVE + ); + } + + await testTextNode("p1"); + await testTextNode("p2"); + await testEmptyInputNode("i1"); + + await SpecialPowers.spawn(browser, [], () => { + const { Layout } = ChromeUtils.importESModule( + "chrome://mochitests/content/browser/accessible/tests/browser/Layout.sys.mjs" + ); + Layout.zoomDocument(content.document, 2.0); + }); + + await testTextNode("p1"); + + await SpecialPowers.spawn(browser, [], () => { + const { Layout } = ChromeUtils.importESModule( + "chrome://mochitests/content/browser/accessible/tests/browser/Layout.sys.mjs" + ); + Layout.zoomDocument(content.document, 1.0); + }); +} + +/** + * Test the text range boundary when page is zoomed + */ +addAccessibleTask( + ` +

Tilimilitryamdiya

+

ل

+
`, + runTests, + { iframe: true, remoteIframe: true } +); diff --git a/accessible/tests/browser/bounds/browser_zero_area.js b/accessible/tests/browser/bounds/browser_zero_area.js new file mode 100644 index 0000000000..c0f9db2673 --- /dev/null +++ b/accessible/tests/browser/bounds/browser_zero_area.js @@ -0,0 +1,118 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/* import-globals-from ../../mochitest/layout.js */ + +async function testContentBounds(browser, acc, expectedWidth, expectedHeight) { + let [expectedX, expectedY] = await getContentBoundsForDOMElm( + browser, + getAccessibleDOMNodeID(acc) + ); + + let contentDPR = await getContentDPR(browser); + let [x, y, width, height] = getBounds(acc, contentDPR); + let prettyAccName = prettyName(acc); + is(x, expectedX, "Wrong x coordinate of " + prettyAccName); + is(y, expectedY, "Wrong y coordinate of " + prettyAccName); + is(width, expectedWidth, "Wrong width of " + prettyAccName); + is(height, expectedHeight, "Wrong height of " + prettyAccName); +} +/** + * Test accessible bounds with different combinations of overflow and + * non-zero frame area. + */ +addAccessibleTask( + ` +
+
+
+ `, + async function (browser, accDoc) { + const a1 = findAccessibleChildByID(accDoc, "a1"); + const a2 = findAccessibleChildByID(accDoc, "a2"); + const a3 = findAccessibleChildByID(accDoc, "a3"); + await testContentBounds(browser, a1, 100, 100); + await testContentBounds(browser, a2, 100, 100); + await testContentBounds(browser, a3, 200, 200); + } +); + +/** + * Ensure frames with zero area have their x, y coordinates correctly reported + * in bounds() + */ +addAccessibleTask( + ` +
+
+`, + async function (browser, accDoc) { + const a = findAccessibleChildByID(accDoc, "a"); + await testContentBounds(browser, a, 0, 0); + } +); + +/** + * Ensure accessibles have accurately signed dimensions and position when + * offscreen. + */ +addAccessibleTask( + ` + +`, + async function (browser, accDoc) { + const radio = findAccessibleChildByID(accDoc, "radio"); + const contentDPR = await getContentDPR(browser); + const [x, y, width, height] = getBounds(radio, contentDPR); + ok(x < 0, "X coordinate should be negative"); + ok(y > 0, "Y coordinate should be positive"); + ok(width > 0, "Width should be positive"); + ok(height > 0, "Height should be positive"); + // Note: the exact values of x, y, width, and height + // are inconsistent with the DOM element values of those + // fields, so we don't check our bounds against them with + // `testContentBounds` here. DOM reports a negative width, + // positive height, and a slightly different (+/- 20) + // x and y. + } +); + +/** + * Test height: 0 with align-items: flex-end. This causes the content to + * overflow above the frame's main rect. + */ +addAccessibleTask( + ` + + + `, + async function (browser, docAcc) { + await testBoundsWithContent(docAcc, "inner0", browser); + await testBoundsWithContent(docAcc, "inner1", browser); + }, + { chrome: true, topLevel: true, remoteIframe: true } +); + +/** + * Test a div (block) inside a span (inline). This causes the span's primary + * frame to have an empty rect offset from its visible content. + */ +addAccessibleTask( + ` + +
Testing
+ + `, + async function (browser, docAcc) { + await testBoundsWithContent(docAcc, "span", browser); + await testBoundsWithContent(docAcc, "div", browser); + }, + { chrome: true, topLevel: true, remoteIframe: true } +); diff --git a/accessible/tests/browser/bounds/head.js b/accessible/tests/browser/bounds/head.js new file mode 100644 index 0000000000..c1882b9495 --- /dev/null +++ b/accessible/tests/browser/bounds/head.js @@ -0,0 +1,19 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +// Load the shared-head file first. +Services.scriptloader.loadSubScript( + "chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js", + this +); + +// Loading and common.js from accessible/tests/mochitest/ for all tests, as +// well as events.js. +loadScripts( + { name: "common.js", dir: MOCHITESTS_DIR }, + { name: "layout.js", dir: MOCHITESTS_DIR }, + { name: "promisified-events.js", dir: MOCHITESTS_DIR } +); diff --git a/accessible/tests/browser/browser.ini b/accessible/tests/browser/browser.ini new file mode 100644 index 0000000000..c7bc851086 --- /dev/null +++ b/accessible/tests/browser/browser.ini @@ -0,0 +1,39 @@ +[DEFAULT] +skip-if = a11y_checks # 1534855 +subsuite = a11y +support-files = + !/accessible/tests/mochitest/*.js + *.sys.mjs + head.js + shared-head.js +prefs = + javascript.options.asyncstack_capture_debuggee_only=false + +[browser_shutdown_acc_reference.js] +[browser_shutdown_doc_acc_reference.js] +[browser_shutdown_multi_acc_reference_doc.js] +[browser_shutdown_multi_acc_reference_obj.js] +[browser_shutdown_multi_proxy_acc_reference_doc.js] +skip-if = + os == "linux" && verify && debug +[browser_shutdown_multi_proxy_acc_reference_obj.js] +skip-if = + os == "linux" && verify && debug +[browser_shutdown_multi_reference.js] +[browser_shutdown_parent_own_reference.js] +skip-if = + os == "win" && verify && debug +[browser_shutdown_pref.js] +[browser_shutdown_proxy_acc_reference.js] +[browser_shutdown_proxy_doc_acc_reference.js] +skip-if = + os == "win" && verify && debug +[browser_shutdown_remote_no_reference.js] +skip-if = + os == "win" && verify && debug +[browser_shutdown_remote_only.js] +[browser_shutdown_remote_own_reference.js] +[browser_shutdown_scope_lifecycle.js] +[browser_shutdown_start_restart.js] +skip-if = + verify && debug diff --git a/accessible/tests/browser/browser_shutdown_acc_reference.js b/accessible/tests/browser/browser_shutdown_acc_reference.js new file mode 100644 index 0000000000..1768095f94 --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_acc_reference.js @@ -0,0 +1,64 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Create a11y service. + const [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + + await a11yInit; + ok(accService, "Service initialized"); + + // Accessible object reference will live longer than the scope of this + // function. + let acc = await new Promise(resolve => { + let intervalId = setInterval(() => { + let tabAcc = accService.getAccessibleFor(gBrowser.selectedTab); + if (tabAcc) { + clearInterval(intervalId); + resolve(tabAcc); + } + }, 10); + }); + ok(acc, "Accessible object is created"); + + let canShutdown = false; + // This promise will resolve only if canShutdown flag is set to true. If + // 'a11y-init-or-shutdown' event with '0' flag comes before it can be shut + // down, the promise will reject. + const [a11yShutdownObserver, a11yShutdownPromise] = shutdownAccService(); + await a11yShutdownObserver; + const a11yShutdown = new Promise((resolve, reject) => + a11yShutdownPromise.then(flag => + canShutdown + ? resolve() + : reject("Accessible service was shut down incorrectly") + ) + ); + + accService = null; + ok(!accService, "Service is removed"); + + // Force garbage collection that should not trigger shutdown because there is + // a reference to an accessible object. + forceGC(); + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Now allow a11y service to shutdown. + canShutdown = true; + // Remove a reference to an accessible object. + acc = null; + ok(!acc, "Accessible object is removed"); + + // Force garbage collection that should now trigger shutdown. + forceGC(); + await a11yShutdown; +}); diff --git a/accessible/tests/browser/browser_shutdown_doc_acc_reference.js b/accessible/tests/browser/browser_shutdown_doc_acc_reference.js new file mode 100644 index 0000000000..8f7bf6d423 --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_doc_acc_reference.js @@ -0,0 +1,56 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Create a11y service. + const [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + + await a11yInit; + ok(accService, "Service initialized"); + + // Accessible document reference will live longer than the scope of this + // function. + let docAcc = accService.getAccessibleFor(document); + ok(docAcc, "Accessible document is created"); + + let canShutdown = false; + // This promise will resolve only if canShutdown flag is set to true. If + // 'a11y-init-or-shutdown' event with '0' flag comes before it can be shut + // down, the promise will reject. + const [a11yShutdownObserver, a11yShutdownPromise] = shutdownAccService(); + await a11yShutdownObserver; + const a11yShutdown = new Promise((resolve, reject) => + a11yShutdownPromise.then(flag => + canShutdown + ? resolve() + : reject("Accessible service was shut down incorrectly") + ) + ); + + accService = null; + ok(!accService, "Service is removed"); + + // Force garbage collection that should not trigger shutdown because there is + // a reference to an accessible document. + forceGC(); + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Now allow a11y service to shutdown. + canShutdown = true; + // Remove a reference to an accessible document. + docAcc = null; + ok(!docAcc, "Accessible document is removed"); + + // Force garbage collection that should now trigger shutdown. + forceGC(); + await a11yShutdown; +}); diff --git a/accessible/tests/browser/browser_shutdown_multi_acc_reference_doc.js b/accessible/tests/browser/browser_shutdown_multi_acc_reference_doc.js new file mode 100644 index 0000000000..273fc7175d --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_multi_acc_reference_doc.js @@ -0,0 +1,76 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Create a11y service. + const [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + + await a11yInit; + ok(accService, "Service initialized"); + + let docAcc = accService.getAccessibleFor(document); + ok(docAcc, "Accessible document is created"); + + // Accessible object reference will live longer than the scope of this + // function. + let acc = await new Promise(resolve => { + let intervalId = setInterval(() => { + let tabAcc = accService.getAccessibleFor(gBrowser.selectedTab); + if (tabAcc) { + clearInterval(intervalId); + resolve(tabAcc); + } + }, 10); + }); + ok(acc, "Accessible object is created"); + + let canShutdown = false; + // This promise will resolve only if canShutdown flag is set to true. If + // 'a11y-init-or-shutdown' event with '0' flag comes before it can be shut + // down, the promise will reject. + const [a11yShutdownObserver, a11yShutdownPromise] = shutdownAccService(); + await a11yShutdownObserver; + const a11yShutdown = new Promise((resolve, reject) => + a11yShutdownPromise.then(flag => + canShutdown + ? resolve() + : reject("Accessible service was shut down incorrectly") + ) + ); + + accService = null; + ok(!accService, "Service is removed"); + + // Force garbage collection that should not trigger shutdown because there are + // references to accessible objects. + forceGC(); + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Remove a reference to an accessible object. + acc = null; + ok(!acc, "Accessible object is removed"); + // Force garbage collection that should not trigger shutdown because there is + // a reference to an accessible document. + forceGC(); + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Now allow a11y service to shutdown. + canShutdown = true; + // Remove a reference to an accessible document. + docAcc = null; + ok(!docAcc, "Accessible document is removed"); + + // Force garbage collection that should now trigger shutdown. + forceGC(); + await a11yShutdown; +}); diff --git a/accessible/tests/browser/browser_shutdown_multi_acc_reference_obj.js b/accessible/tests/browser/browser_shutdown_multi_acc_reference_obj.js new file mode 100644 index 0000000000..af21b3dc4c --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_multi_acc_reference_obj.js @@ -0,0 +1,76 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Create a11y service. + const [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + + await a11yInit; + ok(accService, "Service initialized"); + + let docAcc = accService.getAccessibleFor(document); + ok(docAcc, "Accessible document is created"); + + // Accessible object reference will live longer than the scope of this + // function. + let acc = await new Promise(resolve => { + let intervalId = setInterval(() => { + let tabAcc = accService.getAccessibleFor(gBrowser.selectedTab); + if (tabAcc) { + clearInterval(intervalId); + resolve(tabAcc); + } + }, 10); + }); + ok(acc, "Accessible object is created"); + + let canShutdown = false; + // This promise will resolve only if canShutdown flag is set to true. If + // 'a11y-init-or-shutdown' event with '0' flag comes before it can be shut + // down, the promise will reject. + const [a11yShutdownObserver, a11yShutdownPromise] = shutdownAccService(); + await a11yShutdownObserver; + const a11yShutdown = new Promise((resolve, reject) => + a11yShutdownPromise.then(flag => + canShutdown + ? resolve() + : reject("Accessible service was shut down incorrectly") + ) + ); + + accService = null; + ok(!accService, "Service is removed"); + + // Force garbage collection that should not trigger shutdown because there are + // references to accessible objects. + forceGC(); + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Remove a reference to an accessible document. + docAcc = null; + ok(!docAcc, "Accessible document is removed"); + // Force garbage collection that should not trigger shutdown because there is + // a reference to an accessible object. + forceGC(); + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Now allow a11y service to shutdown. + canShutdown = true; + // Remove a reference to an accessible object. + acc = null; + ok(!acc, "Accessible object is removed"); + + // Force garbage collection that should now trigger shutdown. + forceGC(); + await a11yShutdown; +}); diff --git a/accessible/tests/browser/browser_shutdown_multi_proxy_acc_reference_doc.js b/accessible/tests/browser/browser_shutdown_multi_proxy_acc_reference_doc.js new file mode 100644 index 0000000000..c09c3f6bf1 --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_multi_proxy_acc_reference_doc.js @@ -0,0 +1,90 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Making sure that the e10s is enabled on Windows for testing. + await setE10sPrefs(); + + let docLoaded = waitForEvent( + Ci.nsIAccessibleEvent.EVENT_DOCUMENT_LOAD_COMPLETE, + "body" + ); + const [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + ok(accService, "Service initialized"); + await a11yInit; + + await BrowserTestUtils.withNewTab( + { + gBrowser, + url: `data:text/html, + + + + Accessibility Test + +
+ `, + }, + async function (browser) { + let docLoadedEvent = await docLoaded; + let docAcc = docLoadedEvent.accessibleDocument; + ok(docAcc, "Accessible document proxy is created"); + // Remove unnecessary dangling references + docLoaded = null; + docLoadedEvent = null; + forceGC(); + + let acc = docAcc.getChildAt(0); + ok(acc, "Accessible proxy is created"); + + let canShutdown = false; + const [a11yShutdownObserver, a11yShutdownPromise] = shutdownAccService(); + await a11yShutdownObserver; + const a11yShutdown = new Promise((resolve, reject) => + a11yShutdownPromise.then(flag => + canShutdown + ? resolve() + : reject("Accessible service was shut down incorrectly") + ) + ); + + accService = null; + ok(!accService, "Service is removed"); + // Force garbage collection that should not trigger shutdown because there + // is a reference to an accessible proxy. + forceGC(); + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Remove a reference to an accessible proxy. + acc = null; + ok(!acc, "Accessible proxy is removed"); + // Force garbage collection that should not trigger shutdown because there is + // a reference to an accessible document proxy. + forceGC(); + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Now allow a11y service to shutdown. + canShutdown = true; + // Remove a last reference to an accessible document proxy. + docAcc = null; + ok(!docAcc, "Accessible document proxy is removed"); + + // Force garbage collection that should now trigger shutdown. + forceGC(); + await a11yShutdown; + } + ); + + // Unsetting e10s related preferences. + await unsetE10sPrefs(); +}); diff --git a/accessible/tests/browser/browser_shutdown_multi_proxy_acc_reference_obj.js b/accessible/tests/browser/browser_shutdown_multi_proxy_acc_reference_obj.js new file mode 100644 index 0000000000..4b0b22f858 --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_multi_proxy_acc_reference_obj.js @@ -0,0 +1,90 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Making sure that the e10s is enabled on Windows for testing. + await setE10sPrefs(); + + let docLoaded = waitForEvent( + Ci.nsIAccessibleEvent.EVENT_DOCUMENT_LOAD_COMPLETE, + "body" + ); + const [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + ok(accService, "Service initialized"); + await a11yInit; + + await BrowserTestUtils.withNewTab( + { + gBrowser, + url: `data:text/html, + + + + Accessibility Test + +
+ `, + }, + async function (browser) { + let docLoadedEvent = await docLoaded; + let docAcc = docLoadedEvent.accessibleDocument; + ok(docAcc, "Accessible document proxy is created"); + // Remove unnecessary dangling references + docLoaded = null; + docLoadedEvent = null; + forceGC(); + + let acc = docAcc.getChildAt(0); + ok(acc, "Accessible proxy is created"); + + let canShutdown = false; + const [a11yShutdownObserver, a11yShutdownPromise] = shutdownAccService(); + await a11yShutdownObserver; + const a11yShutdown = new Promise((resolve, reject) => + a11yShutdownPromise.then(flag => + canShutdown + ? resolve() + : reject("Accessible service was shut down incorrectly") + ) + ); + + accService = null; + ok(!accService, "Service is removed"); + // Force garbage collection that should not trigger shutdown because there + // is a reference to an accessible proxy. + forceGC(); + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Remove a reference to an accessible document proxy. + docAcc = null; + ok(!docAcc, "Accessible document proxy is removed"); + // Force garbage collection that should not trigger shutdown because there is + // a reference to an accessible proxy. + forceGC(); + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Now allow a11y service to shutdown. + canShutdown = true; + // Remove a last reference to an accessible proxy. + acc = null; + ok(!acc, "Accessible proxy is removed"); + + // Force garbage collection that should now trigger shutdown. + forceGC(); + await a11yShutdown; + } + ); + + // Unsetting e10s related preferences. + await unsetE10sPrefs(); +}); diff --git a/accessible/tests/browser/browser_shutdown_multi_reference.js b/accessible/tests/browser/browser_shutdown_multi_reference.js new file mode 100644 index 0000000000..a92f6faf61 --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_multi_reference.js @@ -0,0 +1,58 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + info("Creating a service"); + // Create a11y service. + const [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + let accService1 = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + await a11yInit; + ok(accService1, "Service initialized"); + + // Add another reference to a11y service. This will not trigger + // 'a11y-init-or-shutdown' event + let accService2 = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + ok(accService2, "Service initialized"); + + info("Removing all service references"); + let canShutdown = false; + // This promise will resolve only if canShutdown flag is set to true. If + // 'a11y-init-or-shutdown' event with '0' flag comes before it can be shut + // down, the promise will reject. + const [a11yShutdownObserver, a11yShutdownPromise] = shutdownAccService(); + await a11yShutdownObserver; + const a11yShutdown = new Promise((resolve, reject) => + a11yShutdownPromise.then(flag => + canShutdown + ? resolve() + : reject("Accessible service was shut down incorrectly") + ) + ); + // Remove first a11y service reference. + accService1 = null; + ok(!accService1, "Service is removed"); + // Force garbage collection that should not trigger shutdown because there is + // another reference. + forceGC(); + + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Now allow a11y service to shutdown. + canShutdown = true; + // Remove last a11y service reference. + accService2 = null; + ok(!accService2, "Service is removed"); + // Force garbage collection that should trigger shutdown. + forceGC(); + await a11yShutdown; +}); diff --git a/accessible/tests/browser/browser_shutdown_parent_own_reference.js b/accessible/tests/browser/browser_shutdown_parent_own_reference.js new file mode 100644 index 0000000000..472d5c9c95 --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_parent_own_reference.js @@ -0,0 +1,102 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Making sure that the e10s is enabled on Windows for testing. + await setE10sPrefs(); + + await BrowserTestUtils.withNewTab( + { + gBrowser, + url: `data:text/html, + + + + Accessibility Test + + + `, + }, + async function (browser) { + info( + "Creating a service in parent and waiting for service to be created " + + "in content" + ); + await loadContentScripts(browser, { + script: "Common.sys.mjs", + symbol: "CommonUtils", + }); + // Create a11y service in the main process. This will trigger creating of + // the a11y service in parent as well. + const [parentA11yInitObserver, parentA11yInit] = initAccService(); + const [contentA11yInitObserver, contentA11yInit] = + initAccService(browser); + + await Promise.all([parentA11yInitObserver, contentA11yInitObserver]); + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + ok(accService, "Service initialized in parent"); + await Promise.all([parentA11yInit, contentA11yInit]); + + info( + "Adding additional reference to accessibility service in content " + + "process" + ); + // Add a new reference to the a11y service inside the content process. + await SpecialPowers.spawn(browser, [], () => { + content.CommonUtils.accService; + }); + + info( + "Trying to shut down a service in content and making sure it stays " + + "alive as it was started by parent" + ); + let contentCanShutdown = false; + // This promise will resolve only if contentCanShutdown flag is set to true. + // If 'a11y-init-or-shutdown' event with '0' flag (in content) comes before + // it can be shut down, the promise will reject. + const [contentA11yShutdownObserver, contentA11yShutdownPromise] = + shutdownAccService(browser); + await contentA11yShutdownObserver; + const contentA11yShutdown = new Promise((resolve, reject) => + contentA11yShutdownPromise.then(flag => + contentCanShutdown + ? resolve() + : reject("Accessible service was shut down incorrectly") + ) + ); + // Remove a11y service reference in content and force garbage collection. + // This should not trigger shutdown since a11y was originally initialized by + // the main process. + await SpecialPowers.spawn(browser, [], () => { + content.CommonUtils.clearAccService(); + }); + + // Have some breathing room between a11y service shutdowns. + await TestUtils.waitForTick(); + + info("Removing a service in parent"); + // Now allow a11y service to shutdown in content. + contentCanShutdown = true; + // Remove the a11y service reference in the main process. + const [parentA11yShutdownObserver, parentA11yShutdown] = + shutdownAccService(); + await parentA11yShutdownObserver; + + accService = null; + ok(!accService, "Service is removed in parent"); + // Force garbage collection that should trigger shutdown in both parent and + // content. + forceGC(); + await Promise.all([parentA11yShutdown, contentA11yShutdown]); + + // Unsetting e10s related preferences. + await unsetE10sPrefs(); + } + ); +}); diff --git a/accessible/tests/browser/browser_shutdown_pref.js b/accessible/tests/browser/browser_shutdown_pref.js new file mode 100644 index 0000000000..74cef28b03 --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_pref.js @@ -0,0 +1,72 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +const PREF_ACCESSIBILITY_FORCE_DISABLED = "accessibility.force_disabled"; + +add_task(async function testForceDisable() { + ok( + !Services.appinfo.accessibilityEnabled, + "Accessibility is disabled by default" + ); + + info("Reset force disabled preference"); + Services.prefs.clearUserPref(PREF_ACCESSIBILITY_FORCE_DISABLED); + + info("Enable accessibility service via XPCOM"); + let [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + await a11yInit; + ok(Services.appinfo.accessibilityEnabled, "Accessibility is enabled"); + + info("Force disable a11y service via preference"); + let [a11yShutdownObserver, a11yShutdown] = shutdownAccService(); + await a11yShutdownObserver; + + Services.prefs.setIntPref(PREF_ACCESSIBILITY_FORCE_DISABLED, 1); + await a11yShutdown; + ok(!Services.appinfo.accessibilityEnabled, "Accessibility is disabled"); + + info("Attempt to get an instance of a11y service and call its method."); + accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + try { + accService.getAccesssibleFor(document); + ok(false, "getAccesssibleFor should've triggered an exception."); + } catch (e) { + ok( + true, + "getAccesssibleFor triggers an exception as a11y service is shutdown." + ); + } + ok(!Services.appinfo.accessibilityEnabled, "Accessibility is disabled"); + + info("Reset force disabled preference"); + Services.prefs.clearUserPref(PREF_ACCESSIBILITY_FORCE_DISABLED); + + info("Create a11y service again"); + [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + await a11yInit; + ok(Services.appinfo.accessibilityEnabled, "Accessibility is enabled"); + + info("Remove all references to a11y service"); + [a11yShutdownObserver, a11yShutdown] = shutdownAccService(); + await a11yShutdownObserver; + + accService = null; + forceGC(); + await a11yShutdown; + ok(!Services.appinfo.accessibilityEnabled, "Accessibility is disabled"); +}); diff --git a/accessible/tests/browser/browser_shutdown_proxy_acc_reference.js b/accessible/tests/browser/browser_shutdown_proxy_acc_reference.js new file mode 100644 index 0000000000..f0e93cc188 --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_proxy_acc_reference.js @@ -0,0 +1,76 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Making sure that the e10s is enabled on Windows for testing. + await setE10sPrefs(); + + const [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + ok(accService, "Service initialized"); + await a11yInit; + + await BrowserTestUtils.withNewTab( + { + gBrowser, + url: `data:text/html, + + + + Accessibility Test + + + `, + }, + async function (browser) { + let onShow = waitForEvent(Ci.nsIAccessibleEvent.EVENT_SHOW, "div"); + await invokeSetStyle(browser, "div", "visibility", "visible"); + let showEvent = await onShow; + let divAcc = showEvent.accessible; + ok(divAcc, "Accessible proxy is created"); + // Remove unnecessary dangling references + onShow = null; + showEvent = null; + forceGC(); + + let canShutdown = false; + const [a11yShutdownObserver, a11yShutdownPromise] = shutdownAccService(); + await a11yShutdownObserver; + const a11yShutdown = new Promise((resolve, reject) => + a11yShutdownPromise.then(flag => + canShutdown + ? resolve() + : reject("Accessible service was shut down incorrectly") + ) + ); + + accService = null; + ok(!accService, "Service is removed"); + // Force garbage collection that should not trigger shutdown because there + // is a reference to an accessible proxy. + forceGC(); + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Now allow a11y service to shutdown. + canShutdown = true; + // Remove a last reference to an accessible proxy. + divAcc = null; + ok(!divAcc, "Accessible proxy is removed"); + + // Force garbage collection that should now trigger shutdown. + forceGC(); + await a11yShutdown; + } + ); + + // Unsetting e10s related preferences. + await unsetE10sPrefs(); +}); diff --git a/accessible/tests/browser/browser_shutdown_proxy_doc_acc_reference.js b/accessible/tests/browser/browser_shutdown_proxy_doc_acc_reference.js new file mode 100644 index 0000000000..6d417f71eb --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_proxy_doc_acc_reference.js @@ -0,0 +1,78 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Making sure that the e10s is enabled on Windows for testing. + await setE10sPrefs(); + + let docLoaded = waitForEvent( + Ci.nsIAccessibleEvent.EVENT_DOCUMENT_LOAD_COMPLETE, + "body" + ); + const [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + ok(accService, "Service initialized"); + await a11yInit; + + await BrowserTestUtils.withNewTab( + { + gBrowser, + url: `data:text/html, + + + + Accessibility Test + + + `, + }, + async function (browser) { + let docLoadedEvent = await docLoaded; + let docAcc = docLoadedEvent.accessibleDocument; + ok(docAcc, "Accessible document proxy is created"); + // Remove unnecessary dangling references + docLoaded = null; + docLoadedEvent = null; + forceGC(); + + let canShutdown = false; + const [a11yShutdownObserver, a11yShutdownPromise] = shutdownAccService(); + await a11yShutdownObserver; + const a11yShutdown = new Promise((resolve, reject) => + a11yShutdownPromise.then(flag => + canShutdown + ? resolve() + : reject("Accessible service was shut down incorrectly") + ) + ); + + accService = null; + ok(!accService, "Service is removed"); + // Force garbage collection that should not trigger shutdown because there + // is a reference to an accessible proxy. + forceGC(); + // Have some breathing room when removing a11y service references. + await TestUtils.waitForTick(); + + // Now allow a11y service to shutdown. + canShutdown = true; + // Remove a last reference to an accessible document proxy. + docAcc = null; + ok(!docAcc, "Accessible document proxy is removed"); + + // Force garbage collection that should now trigger shutdown. + forceGC(); + await a11yShutdown; + } + ); + + // Unsetting e10s related preferences. + await unsetE10sPrefs(); +}); diff --git a/accessible/tests/browser/browser_shutdown_remote_no_reference.js b/accessible/tests/browser/browser_shutdown_remote_no_reference.js new file mode 100644 index 0000000000..dc2a7e33e9 --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_remote_no_reference.js @@ -0,0 +1,141 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Making sure that the e10s is enabled on Windows for testing. + await setE10sPrefs(); + + await BrowserTestUtils.withNewTab( + { + gBrowser, + url: `data:text/html, + + + + Accessibility Test + + + `, + }, + async function (browser) { + info( + "Creating a service in parent and waiting for service to be created " + + "in content" + ); + await loadContentScripts(browser, { + script: "Common.sys.mjs", + symbol: "CommonUtils", + }); + // Create a11y service in the main process. This will trigger creating of + // the a11y service in parent as well. + const [parentA11yInitObserver, parentA11yInit] = initAccService(); + const [contentA11yInitObserver, contentA11yInit] = + initAccService(browser); + let [parentConsumersChangedObserver, parentConsumersChanged] = + accConsumersChanged(); + let [contentConsumersChangedObserver, contentConsumersChanged] = + accConsumersChanged(browser); + + await Promise.all([ + parentA11yInitObserver, + contentA11yInitObserver, + parentConsumersChangedObserver, + contentConsumersChangedObserver, + ]); + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + ok(accService, "Service initialized in parent"); + await Promise.all([parentA11yInit, contentA11yInit]); + await parentConsumersChanged.then(data => + Assert.deepEqual( + data, + { + XPCOM: true, + MainProcess: false, + PlatformAPI: false, + }, + "Accessibility service consumers in parent are correct." + ) + ); + await contentConsumersChanged.then(data => + Assert.deepEqual( + data, + { + XPCOM: false, + MainProcess: true, + PlatformAPI: false, + }, + "Accessibility service consumers in content are correct." + ) + ); + + Assert.deepEqual( + JSON.parse(accService.getConsumers()), + { + XPCOM: true, + MainProcess: false, + PlatformAPI: false, + }, + "Accessibility service consumers in parent are correct." + ); + + info( + "Removing a service in parent and waiting for service to be shut " + + "down in content" + ); + // Remove a11y service reference in the main process. + const [parentA11yShutdownObserver, parentA11yShutdown] = + shutdownAccService(); + const [contentA11yShutdownObserver, contentA11yShutdown] = + shutdownAccService(browser); + [parentConsumersChangedObserver, parentConsumersChanged] = + accConsumersChanged(); + [contentConsumersChangedObserver, contentConsumersChanged] = + accConsumersChanged(browser); + + await Promise.all([ + parentA11yShutdownObserver, + contentA11yShutdownObserver, + parentConsumersChangedObserver, + contentConsumersChangedObserver, + ]); + + accService = null; + ok(!accService, "Service is removed in parent"); + // Force garbage collection that should trigger shutdown in both main and + // content process. + forceGC(); + await Promise.all([parentA11yShutdown, contentA11yShutdown]); + await parentConsumersChanged.then(data => + Assert.deepEqual( + data, + { + XPCOM: false, + MainProcess: false, + PlatformAPI: false, + }, + "Accessibility service consumers are correct." + ) + ); + await contentConsumersChanged.then(data => + Assert.deepEqual( + data, + { + XPCOM: false, + MainProcess: false, + PlatformAPI: false, + }, + "Accessibility service consumers are correct." + ) + ); + } + ); + + // Unsetting e10s related preferences. + await unsetE10sPrefs(); +}); diff --git a/accessible/tests/browser/browser_shutdown_remote_only.js b/accessible/tests/browser/browser_shutdown_remote_only.js new file mode 100644 index 0000000000..678031aac0 --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_remote_only.js @@ -0,0 +1,59 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Making sure that the e10s is enabled on Windows for testing. + await setE10sPrefs(); + + await BrowserTestUtils.withNewTab( + { + gBrowser, + url: `data:text/html, + + + + Accessibility Test + + + `, + }, + async function (browser) { + info("Creating a service in content"); + await loadContentScripts(browser, { + script: "Common.sys.mjs", + symbol: "CommonUtils", + }); + // Create a11y service in the content process. + const [a11yInitObserver, a11yInit] = initAccService(browser); + await a11yInitObserver; + await SpecialPowers.spawn(browser, [], () => { + content.CommonUtils.accService; + }); + await a11yInit; + ok( + true, + "Accessibility service is started in content process correctly." + ); + + info("Removing a service in content"); + // Remove a11y service reference from the content process. + const [a11yShutdownObserver, a11yShutdown] = shutdownAccService(browser); + await a11yShutdownObserver; + // Force garbage collection that should trigger shutdown. + await SpecialPowers.spawn(browser, [], () => { + content.CommonUtils.clearAccService(); + }); + await a11yShutdown; + ok( + true, + "Accessibility service is shutdown in content process correctly." + ); + + // Unsetting e10s related preferences. + await unsetE10sPrefs(); + } + ); +}); diff --git a/accessible/tests/browser/browser_shutdown_remote_own_reference.js b/accessible/tests/browser/browser_shutdown_remote_own_reference.js new file mode 100644 index 0000000000..34fdeee3ab --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_remote_own_reference.js @@ -0,0 +1,181 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Making sure that the e10s is enabled on Windows for testing. + await setE10sPrefs(); + + await BrowserTestUtils.withNewTab( + { + gBrowser, + url: `data:text/html, + + + + Accessibility Test + + + `, + }, + async function (browser) { + info( + "Creating a service in parent and waiting for service to be created " + + "in content" + ); + await loadContentScripts(browser, { + script: "Common.sys.mjs", + symbol: "CommonUtils", + }); + // Create a11y service in the main process. This will trigger creating of + // the a11y service in parent as well. + const [parentA11yInitObserver, parentA11yInit] = initAccService(); + const [contentA11yInitObserver, contentA11yInit] = + initAccService(browser); + let [contentConsumersChangedObserver, contentConsumersChanged] = + accConsumersChanged(browser); + + await Promise.all([ + parentA11yInitObserver, + contentA11yInitObserver, + contentConsumersChangedObserver, + ]); + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + ok(accService, "Service initialized in parent"); + await Promise.all([parentA11yInit, contentA11yInit]); + await contentConsumersChanged.then(data => + Assert.deepEqual( + data, + { + XPCOM: false, + MainProcess: true, + PlatformAPI: false, + }, + "Accessibility service consumers in content are correct." + ) + ); + + info( + "Adding additional reference to accessibility service in content " + + "process" + ); + [contentConsumersChangedObserver, contentConsumersChanged] = + accConsumersChanged(browser); + await contentConsumersChangedObserver; + // Add a new reference to the a11y service inside the content process. + await SpecialPowers.spawn(browser, [], () => { + content.CommonUtils.accService; + }); + await contentConsumersChanged.then(data => + Assert.deepEqual( + data, + { + XPCOM: true, + MainProcess: true, + PlatformAPI: false, + }, + "Accessibility service consumers in content are correct." + ) + ); + + const contentConsumers = await SpecialPowers.spawn(browser, [], () => + content.CommonUtils.accService.getConsumers() + ); + Assert.deepEqual( + JSON.parse(contentConsumers), + { + XPCOM: true, + MainProcess: true, + PlatformAPI: false, + }, + "Accessibility service consumers in parent are correct." + ); + + info( + "Shutting down a service in parent and making sure the one in " + + "content stays alive" + ); + let contentCanShutdown = false; + const [parentA11yShutdownObserver, parentA11yShutdown] = + shutdownAccService(); + [contentConsumersChangedObserver, contentConsumersChanged] = + accConsumersChanged(browser); + // This promise will resolve only if contentCanShutdown flag is set to true. + // If 'a11y-init-or-shutdown' event with '0' flag (in content) comes before + // it can be shut down, the promise will reject. + const [contentA11yShutdownObserver, contentA11yShutdownPromise] = + shutdownAccService(browser); + const contentA11yShutdown = new Promise((resolve, reject) => + contentA11yShutdownPromise.then(flag => + contentCanShutdown + ? resolve() + : reject("Accessible service was shut down incorrectly") + ) + ); + + await Promise.all([ + parentA11yShutdownObserver, + contentA11yShutdownObserver, + contentConsumersChangedObserver, + ]); + // Remove a11y service reference in the main process and force garbage + // collection. This should not trigger shutdown in content since a11y + // service is used by XPCOM. + accService = null; + ok(!accService, "Service is removed in parent"); + // Force garbage collection that should not trigger shutdown because there + // is a reference in a content process. + forceGC(); + await SpecialPowers.spawn(browser, [], () => { + SpecialPowers.Cu.forceGC(); + }); + await parentA11yShutdown; + await contentConsumersChanged.then(data => + Assert.deepEqual( + data, + { + XPCOM: true, + MainProcess: false, + PlatformAPI: false, + }, + "Accessibility service consumers in content are correct." + ) + ); + + // Have some breathing room between a11y service shutdowns. + await TestUtils.waitForTick(); + + info("Removing a service in content"); + // Now allow a11y service to shutdown in content. + contentCanShutdown = true; + [contentConsumersChangedObserver, contentConsumersChanged] = + accConsumersChanged(browser); + await contentConsumersChangedObserver; + // Remove last reference to a11y service in content and force garbage + // collection that should trigger shutdown. + await SpecialPowers.spawn(browser, [], () => { + content.CommonUtils.clearAccService(); + }); + await contentA11yShutdown; + await contentConsumersChanged.then(data => + Assert.deepEqual( + data, + { + XPCOM: false, + MainProcess: false, + PlatformAPI: false, + }, + "Accessibility service consumers in content are correct." + ) + ); + + // Unsetting e10s related preferences. + await unsetE10sPrefs(); + } + ); +}); diff --git a/accessible/tests/browser/browser_shutdown_scope_lifecycle.js b/accessible/tests/browser/browser_shutdown_scope_lifecycle.js new file mode 100644 index 0000000000..fafa59bb50 --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_scope_lifecycle.js @@ -0,0 +1,28 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + // Create a11y service inside of the function scope. Its reference should be + // released once the anonimous function is called. + const [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + const a11yInitThenShutdown = a11yInit.then(async () => { + const [a11yShutdownObserver, a11yShutdown] = shutdownAccService(); + await a11yShutdownObserver; + return a11yShutdown; + }); + + (function () { + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + ok(accService, "Service initialized"); + })(); + + // Force garbage collection that should trigger shutdown. + forceGC(); + await a11yInitThenShutdown; +}); diff --git a/accessible/tests/browser/browser_shutdown_start_restart.js b/accessible/tests/browser/browser_shutdown_start_restart.js new file mode 100644 index 0000000000..92d2823388 --- /dev/null +++ b/accessible/tests/browser/browser_shutdown_start_restart.js @@ -0,0 +1,51 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +add_task(async function () { + info("Creating a service"); + // Create a11y service. + let [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + let accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + await a11yInit; + ok(accService, "Service initialized"); + + info("Removing a service"); + // Remove the only reference to an a11y service. + let [a11yShutdownObserver, a11yShutdown] = shutdownAccService(); + await a11yShutdownObserver; + + accService = null; + ok(!accService, "Service is removed"); + // Force garbage collection that should trigger shutdown. + forceGC(); + await a11yShutdown; + + info("Recreating a service"); + // Re-create a11y service. + [a11yInitObserver, a11yInit] = initAccService(); + await a11yInitObserver; + + accService = Cc["@mozilla.org/accessibilityService;1"].getService( + Ci.nsIAccessibilityService + ); + await a11yInit; + ok(accService, "Service initialized again"); + + info("Removing a service again"); + // Remove the only reference to an a11y service again. + [a11yShutdownObserver, a11yShutdown] = shutdownAccService(); + await a11yShutdownObserver; + + accService = null; + ok(!accService, "Service is removed again"); + // Force garbage collection that should trigger shutdown. + forceGC(); + await a11yShutdown; +}); diff --git a/accessible/tests/browser/e10s/browser.ini b/accessible/tests/browser/e10s/browser.ini new file mode 100644 index 0000000000..b9a511bd35 --- /dev/null +++ b/accessible/tests/browser/e10s/browser.ini @@ -0,0 +1,80 @@ +[DEFAULT] +subsuite = a11y +support-files = + head.js + doc_treeupdate_ariadialog.html + doc_treeupdate_ariaowns.html + doc_treeupdate_imagemap.html + doc_treeupdate_removal.xhtml + doc_treeupdate_visibility.html + doc_treeupdate_whitespace.html + fonts/Ahem.sjs + !/accessible/tests/browser/shared-head.js + !/accessible/tests/browser/*.jsm + !/accessible/tests/mochitest/*.js + !/accessible/tests/mochitest/events/slow_image.sjs + !/accessible/tests/mochitest/letters.gif + !/accessible/tests/mochitest/moz.png +prefs = + javascript.options.asyncstack_capture_debuggee_only=false + +# Caching tests +[browser_caching_actions.js] +[browser_caching_attributes.js] +[browser_caching_description.js] +[browser_caching_document_props.js] +[browser_caching_domnodeid.js] +[browser_caching_hyperlink.js] +[browser_caching_innerHTML.js] +skip-if = os != 'win' +[browser_caching_interfaces.js] +[browser_caching_large_update.js] +[browser_caching_name.js] +[browser_caching_position.js] +[browser_caching_relations.js] +[browser_caching_relations_002.js] +[browser_caching_states.js] +[browser_caching_table.js] +[browser_caching_text_bounds.js] +[browser_caching_uniqueid.js] +[browser_caching_value.js] + +# Events tests +[browser_events_announcement.js] +skip-if = os == 'win' # Bug 1288839 +[browser_events_caretmove.js] +[browser_events_hide.js] +[browser_events_show.js] +[browser_events_statechange.js] +[browser_events_textchange.js] +[browser_events_vcchange.js] + +[browser_language.js] + +[browser_obj_group.js] +[browser_obj_group_002.js] + +# Tree update tests +[browser_treeupdate_ariadialog.js] +[browser_treeupdate_ariaowns.js] +[browser_treeupdate_canvas.js] +[browser_treeupdate_csscontentvisibility.js] +[browser_treeupdate_cssoverflow.js] +[browser_treeupdate_doc.js] +[browser_treeupdate_gencontent.js] +[browser_treeupdate_hidden.js] +[browser_treeupdate_image.js] +[browser_treeupdate_imagemap.js] +[browser_treeupdate_list.js] +[browser_treeupdate_list_editabledoc.js] +[browser_treeupdate_listener.js] +[browser_treeupdate_move.js] +skip-if = + os == "win" && os_version == "6.1" # Skip on Azure - frequent failure +[browser_treeupdate_optgroup.js] +[browser_treeupdate_removal.js] +[browser_treeupdate_select_dropdown.js] +[browser_treeupdate_table.js] +[browser_treeupdate_textleaf.js] +[browser_treeupdate_visibility.js] +[browser_treeupdate_whitespace.js] diff --git a/accessible/tests/browser/e10s/browser_caching_actions.js b/accessible/tests/browser/e10s/browser_caching_actions.js new file mode 100644 index 0000000000..8bf3542a03 --- /dev/null +++ b/accessible/tests/browser/e10s/browser_caching_actions.js @@ -0,0 +1,266 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +const gClickEvents = ["mousedown", "mouseup", "click"]; + +const gActionDescrMap = { + jump: "Jump", + press: "Press", + check: "Check", + uncheck: "Uncheck", + select: "Select", + open: "Open", + close: "Close", + switch: "Switch", + click: "Click", + collapse: "Collapse", + expand: "Expand", + activate: "Activate", + cycle: "Cycle", + "click ancestor": "Click ancestor", +}; + +async function testActions(browser, docAcc, id, expectedActions, domEvents) { + const acc = findAccessibleChildByID(docAcc, id); + is(acc.actionCount, expectedActions.length, "Correct action count"); + + let actionNames = []; + let actionDescriptions = []; + for (let i = 0; i < acc.actionCount; i++) { + actionNames.push(acc.getActionName(i)); + actionDescriptions.push(acc.getActionDescription(i)); + } + + is(actionNames.join(","), expectedActions.join(","), "Correct action names"); + is( + actionDescriptions.join(","), + expectedActions.map(a => gActionDescrMap[a]).join(","), + "Correct action descriptions" + ); + + if (!domEvents) { + return; + } + + // We need to set up the listener, and wait for the promise in two separate + // content tasks. + await invokeContentTask(browser, [id, domEvents], (_id, _domEvents) => { + let promises = _domEvents.map( + evtName => + new Promise(resolve => { + const listener = e => { + if (e.target.id == _id) { + content.removeEventListener(evtName, listener); + content.evtPromise = null; + resolve(42); + } + }; + content.addEventListener(evtName, listener); + }) + ); + content.evtPromise = Promise.all(promises); + }); + + acc.doAction(0); + + let eventFired = await invokeContentTask(browser, [], async () => { + await content.evtPromise; + return true; + }); + + ok(eventFired, `DOM events fired '${domEvents}'`); +} + +addAccessibleTask( + ` + + + + linkable textleaf accessible +
linkable textleaf accessible
+ + + image in link + + +
+ + +
+ +

p in clickable div

+ `, + async function (browser, docAcc) { + is(docAcc.actionCount, 0, "Doc should not have any actions"); + + const _testActions = async (id, expectedActions, domEvents) => { + await testActions(browser, docAcc, id, expectedActions, domEvents); + }; + + await _testActions("li_clickable1", ["click"], gClickEvents); + await _testActions("li_clickable2", ["click"], gClickEvents); + await _testActions("li_clickable3", ["click"], gClickEvents); + + await _testActions("onclick_img", ["click"], gClickEvents); + await _testActions("link1", ["jump"], gClickEvents); + await _testActions("link2", ["click"], gClickEvents); + await _testActions("link3", ["jump"], gClickEvents); + await _testActions("link3img", ["click ancestor"], gClickEvents); + await _testActions("label1", ["click"], gClickEvents); + await _testActions("p_in_clickable_div", ["click ancestor"], gClickEvents); + + await invokeContentTask(browser, [], () => { + content.document + .getElementById("li_clickable1") + .removeAttribute("onclick"); + }); + + let acc = findAccessibleChildByID(docAcc, "li_clickable1"); + await untilCacheIs(() => acc.actionCount, 0, "li has no actions"); + let thrown = false; + try { + acc.doAction(0); + } catch (e) { + thrown = true; + } + ok(thrown, "doAction should throw exception"); + + // Remove 'for' from label + await invokeContentTask(browser, [], () => { + content.document.getElementById("label1").removeAttribute("for"); + }); + acc = findAccessibleChildByID(docAcc, "label1"); + await untilCacheIs(() => acc.actionCount, 0, "label has no actions"); + thrown = false; + try { + acc.doAction(0); + ok(false, "doAction should throw exception"); + } catch (e) { + thrown = true; + } + ok(thrown, "doAction should throw exception"); + + // Add 'longdesc' to image + await invokeContentTask(browser, [], () => { + content.document + .getElementById("onclick_img") + // eslint-disable-next-line @microsoft/sdl/no-insecure-url + .setAttribute("longdesc", "http://example.com"); + }); + acc = findAccessibleChildByID(docAcc, "onclick_img"); + await untilCacheIs(() => acc.actionCount, 2, "img has 2 actions"); + await _testActions("onclick_img", ["click", "showlongdesc"]); + + // Remove 'onclick' from image with 'longdesc' + await invokeContentTask(browser, [], () => { + content.document.getElementById("onclick_img").removeAttribute("onclick"); + }); + acc = findAccessibleChildByID(docAcc, "onclick_img"); + await untilCacheIs(() => acc.actionCount, 1, "img has 1 actions"); + await _testActions("onclick_img", ["showlongdesc"]); + + // Remove 'href' from link and test linkable child + const link1Acc = findAccessibleChildByID(docAcc, "link1"); + is( + link1Acc.firstChild.getActionName(0), + "click ancestor", + "linkable child has click ancestor action" + ); + await invokeContentTask(browser, [], () => { + let link1 = content.document.getElementById("link1"); + link1.removeAttribute("href"); + }); + await untilCacheIs(() => link1Acc.actionCount, 0, "link has no actions"); + is(link1Acc.firstChild.actionCount, 0, "linkable child's actions removed"); + + // Add a click handler to the body. Ensure it propagates to descendants. + await invokeContentTask(browser, [], () => { + content.document.body.onclick = () => {}; + }); + await untilCacheIs(() => docAcc.actionCount, 1, "Doc has 1 action"); + await _testActions("link1", ["click ancestor"]); + + await invokeContentTask(browser, [], () => { + content.document.body.onclick = null; + }); + await untilCacheIs(() => docAcc.actionCount, 0, "Doc has no actions"); + is(link1Acc.actionCount, 0, "link has no actions"); + + // Add a click handler to the root element. Ensure it propagates to + // descendants. + await invokeContentTask(browser, [], () => { + content.document.documentElement.onclick = () => {}; + }); + await untilCacheIs(() => docAcc.actionCount, 1, "Doc has 1 action"); + await _testActions("link1", ["click ancestor"]); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +/** + * Test access key. + */ +addAccessibleTask( + ` + + + `, + async function (browser, docAcc) { + const noKey = findAccessibleChildByID(docAcc, "noKey"); + is(noKey.accessKey, "", "noKey has no accesskey"); + const key = findAccessibleChildByID(docAcc, "key"); + is(key.accessKey, MAC ? "⌃⌥a" : "Alt+Shift+a", "key has correct accesskey"); + + info("Changing accesskey"); + await invokeContentTask(browser, [], () => { + content.document.getElementById("key").accessKey = "b"; + }); + await untilCacheIs( + () => key.accessKey, + MAC ? "⌃⌥b" : "Alt+Shift+b", + "Correct accesskey after change" + ); + + info("Removing accesskey"); + await invokeContentTask(browser, [], () => { + content.document.getElementById("key").removeAttribute("accesskey"); + }); + await untilCacheIs( + () => key.accessKey, + "", + "Empty accesskey after removal" + ); + + info("Adding accesskey"); + await invokeContentTask(browser, [], () => { + content.document.getElementById("key").accessKey = "c"; + }); + await untilCacheIs( + () => key.accessKey, + MAC ? "⌃⌥c" : "Alt+Shift+c", + "Correct accesskey after addition" + ); + }, + { + chrome: true, + topLevel: true, + iframe: false, // Bug 1796846 + remoteIframe: false, // Bug 1796846 + } +); diff --git a/accessible/tests/browser/e10s/browser_caching_attributes.js b/accessible/tests/browser/e10s/browser_caching_attributes.js new file mode 100644 index 0000000000..7b20cff49f --- /dev/null +++ b/accessible/tests/browser/e10s/browser_caching_attributes.js @@ -0,0 +1,717 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/* import-globals-from ../../mochitest/attributes.js */ +loadScripts({ name: "attributes.js", dir: MOCHITESTS_DIR }); + +/** + * Default textbox accessible attributes. + */ +const defaultAttributes = { + "margin-top": "0px", + "margin-right": "0px", + "margin-bottom": "0px", + "margin-left": "0px", + "text-align": "start", + "text-indent": "0px", + id: "textbox", + tag: "input", + display: "inline-block", +}; + +/** + * Test data has the format of: + * { + * desc {String} description for better logging + * expected {Object} expected attributes for given accessibles + * unexpected {Object} unexpected attributes for given accessibles + * + * action {?AsyncFunction} an optional action that awaits a change in + * attributes + * attrs {?Array} an optional list of attributes to update + * waitFor {?Number} an optional event to wait for + * } + */ +const attributesTests = [ + { + desc: "Initiall accessible attributes", + expected: defaultAttributes, + unexpected: { + "line-number": "1", + "explicit-name": "true", + "container-live": "polite", + live: "polite", + }, + }, + { + desc: "@line-number attribute is present when textbox is focused", + async action(browser) { + await invokeFocus(browser, "textbox"); + }, + waitFor: EVENT_FOCUS, + expected: Object.assign({}, defaultAttributes, { "line-number": "1" }), + unexpected: { + "explicit-name": "true", + "container-live": "polite", + live: "polite", + }, + }, + { + desc: "@aria-live sets container-live and live attributes", + attrs: [ + { + attr: "aria-live", + value: "polite", + }, + ], + expected: Object.assign({}, defaultAttributes, { + "line-number": "1", + "container-live": "polite", + live: "polite", + }), + unexpected: { + "explicit-name": "true", + }, + }, + { + desc: "@title attribute sets explicit-name attribute to true", + attrs: [ + { + attr: "title", + value: "textbox", + }, + ], + expected: Object.assign({}, defaultAttributes, { + "line-number": "1", + "explicit-name": "true", + "container-live": "polite", + live: "polite", + }), + unexpected: {}, + }, +]; + +/** + * Test caching of accessible object attributes + */ +addAccessibleTask( + ` + `, + async function (browser, accDoc) { + let textbox = findAccessibleChildByID(accDoc, "textbox"); + for (let { + desc, + action, + attrs, + expected, + waitFor, + unexpected, + } of attributesTests) { + info(desc); + let onUpdate; + + if (waitFor) { + onUpdate = waitForEvent(waitFor, "textbox"); + } + + if (action) { + await action(browser); + } else if (attrs) { + for (let { attr, value } of attrs) { + await invokeSetAttribute(browser, "textbox", attr, value); + } + } + + await onUpdate; + testAttrs(textbox, expected); + testAbsentAttrs(textbox, unexpected); + } + }, + { + // These tests don't work yet with the parent process cache. + topLevel: false, + iframe: false, + remoteIframe: false, + } +); + +/** + * Test caching of the tag attribute. + */ +addAccessibleTask( + ` +

text

+ + `, + async function (browser, docAcc) { + testAttrs(docAcc, { tag: "body" }, true); + const p = findAccessibleChildByID(docAcc, "p"); + testAttrs(p, { tag: "p" }, true); + const textLeaf = p.firstChild; + testAbsentAttrs(textLeaf, { tag: "" }); + const textarea = findAccessibleChildByID(docAcc, "textarea"); + testAttrs(textarea, { tag: "textarea" }, true); + }, + { chrome: true, topLevel: true, iframe: true, remoteIframe: true } +); + +/** + * Test caching of the text-input-type attribute. + */ +addAccessibleTask( + ` + + + + + + + + + `, + async function (browser, docAcc) { + function testInputType(id, inputType) { + if (inputType == undefined) { + testAbsentAttrs(findAccessibleChildByID(docAcc, id), { + "text-input-type": "", + }); + } else { + testAttrs( + findAccessibleChildByID(docAcc, id), + { "text-input-type": inputType }, + true + ); + } + } + + testInputType("default"); + testInputType("email", "email"); + testInputType("password", "password"); + testInputType("text", "text"); + testInputType("date", "date"); + testInputType("time", "time"); + testInputType("checkbox"); + testInputType("radio"); + }, + { chrome: true, topLevel: true, iframe: false, remoteIframe: false } +); + +/** + * Test caching of the display attribute. + */ +addAccessibleTask( + ` +
+ a + +
+ `, + async function (browser, docAcc) { + const div = findAccessibleChildByID(docAcc, "div"); + testAttrs(div, { display: "block" }, true); + const ins = findAccessibleChildByID(docAcc, "ins"); + testAttrs(ins, { display: "inline" }, true); + const textLeaf = ins.firstChild; + testAbsentAttrs(textLeaf, { display: "" }); + const button = findAccessibleChildByID(docAcc, "button"); + testAttrs(button, { display: "inline-block" }, true); + + await invokeContentTask(browser, [], () => { + content.document.getElementById("ins").style.display = "block"; + content.document.body.offsetTop; // Flush layout. + }); + await untilCacheIs( + () => ins.attributes.getStringProperty("display"), + "block", + "ins display attribute changed to block" + ); + }, + { chrome: true, topLevel: true, iframe: true, remoteIframe: true } +); + +/** + * Test that there is no display attribute on image map areas. + */ +addAccessibleTask( + ` + + + + + + + `, + async function (browser, docAcc) { + const normalArea = findAccessibleChildByID(docAcc, "normalArea"); + testAbsentAttrs(normalArea, { display: "" }); + const unslottedArea = findAccessibleChildByID(docAcc, "unslottedArea"); + testAbsentAttrs(unslottedArea, { display: "" }); + }, + { topLevel: true } +); + +/** + * Test caching of the explicit-name attribute. + */ +addAccessibleTask( + ` +

content

+ + + + +
+ `, + async function (browser, docAcc) { + const h1 = findAccessibleChildByID(docAcc, "h1"); + testAbsentAttrs(h1, { "explicit-name": "" }); + const buttonContent = findAccessibleChildByID(docAcc, "buttonContent"); + testAbsentAttrs(buttonContent, { "explicit-name": "" }); + const buttonLabel = findAccessibleChildByID(docAcc, "buttonLabel"); + testAttrs(buttonLabel, { "explicit-name": "true" }, true); + const buttonEmpty = findAccessibleChildByID(docAcc, "buttonEmpty"); + testAbsentAttrs(buttonEmpty, { "explicit-name": "" }); + const buttonSummary = findAccessibleChildByID(docAcc, "buttonSummary"); + testAbsentAttrs(buttonSummary, { "explicit-name": "" }); + const div = findAccessibleChildByID(docAcc, "div"); + testAbsentAttrs(div, { "explicit-name": "" }); + + info("Setting aria-label on h1"); + let nameChanged = waitForEvent(EVENT_NAME_CHANGE, h1); + await invokeContentTask(browser, [], () => { + content.document.getElementById("h1").setAttribute("aria-label", "label"); + }); + await nameChanged; + testAttrs(h1, { "explicit-name": "true" }, true); + }, + { chrome: true, topLevel: true, iframe: true, remoteIframe: true } +); + +/** + * Test caching of ARIA attributes that are exposed via object attributes. + */ +addAccessibleTask( + ` +
currentTrue
+
currentFalse
+
currentPage
+
currentBlah
+
haspopup
+
+
+
positive
+
+
+
+
+
negative
+
+
+
+
+
invalid
+
+
+
foo
+
mutate
+ `, + async function (browser, docAcc) { + const currentTrue = findAccessibleChildByID(docAcc, "currentTrue"); + testAttrs(currentTrue, { current: "true" }, true); + const currentFalse = findAccessibleChildByID(docAcc, "currentFalse"); + testAbsentAttrs(currentFalse, { current: "" }); + const currentPage = findAccessibleChildByID(docAcc, "currentPage"); + testAttrs(currentPage, { current: "page" }, true); + // Test that token normalization works. + const currentBlah = findAccessibleChildByID(docAcc, "currentBlah"); + testAttrs(currentBlah, { current: "true" }, true); + const haspopupMenu = findAccessibleChildByID(docAcc, "haspopupMenu"); + testAttrs(haspopupMenu, { haspopup: "menu" }, true); + + // Test normalization of integer values. + const rowColCountPositive = findAccessibleChildByID( + docAcc, + "rowColCountPositive" + ); + testAttrs( + rowColCountPositive, + { rowcount: "1000", colcount: "1000" }, + true + ); + const rowColIndexPositive = findAccessibleChildByID( + docAcc, + "rowColIndexPositive" + ); + testAttrs(rowColIndexPositive, { rowindex: "100", colindex: "100" }, true); + const rowColCountNegative = findAccessibleChildByID( + docAcc, + "rowColCountNegative" + ); + testAttrs(rowColCountNegative, { rowcount: "-1", colcount: "-1" }, true); + const rowColIndexNegative = findAccessibleChildByID( + docAcc, + "rowColIndexNegative" + ); + testAbsentAttrs(rowColIndexNegative, { rowindex: "", colindex: "" }); + const rowColCountInvalid = findAccessibleChildByID( + docAcc, + "rowColCountInvalid" + ); + testAbsentAttrs(rowColCountInvalid, { rowcount: "", colcount: "" }); + const rowColIndexInvalid = findAccessibleChildByID( + docAcc, + "rowColIndexInvalid" + ); + testAbsentAttrs(rowColIndexInvalid, { rowindex: "", colindex: "" }); + + // Test that unknown aria- attributes get exposed. + const foo = findAccessibleChildByID(docAcc, "foo"); + testAttrs(foo, { foo: "bar" }, true); + + const mutate = findAccessibleChildByID(docAcc, "mutate"); + testAttrs(mutate, { current: "true" }, true); + info("mutate: Removing aria-current"); + let changed = waitForEvent(EVENT_OBJECT_ATTRIBUTE_CHANGED, mutate); + await invokeContentTask(browser, [], () => { + content.document.getElementById("mutate").removeAttribute("aria-current"); + }); + await changed; + testAbsentAttrs(mutate, { current: "" }); + info("mutate: Adding aria-current"); + changed = waitForEvent(EVENT_OBJECT_ATTRIBUTE_CHANGED, mutate); + await invokeContentTask(browser, [], () => { + content.document + .getElementById("mutate") + .setAttribute("aria-current", "page"); + }); + await changed; + testAttrs(mutate, { current: "page" }, true); + }, + { chrome: true, topLevel: true, iframe: true, remoteIframe: true } +); + +/** + * Test support for the xml-roles attribute. + */ +addAccessibleTask( + ` +
knownRole
+
emptyRole
+
unknownRole
+
multiRole
+
landmarkMarkup
+
landmarkMarkupWithRole
+
landmarkMarkupWithEmptyRole
+
markup
+ +
markupWithEmptyRole
+ `, + async function (browser, docAcc) { + const knownRole = findAccessibleChildByID(docAcc, "knownRole"); + testAttrs(knownRole, { "xml-roles": "main" }, true); + const emptyRole = findAccessibleChildByID(docAcc, "emptyRole"); + testAbsentAttrs(emptyRole, { "xml-roles": "" }); + const unknownRole = findAccessibleChildByID(docAcc, "unknownRole"); + testAttrs(unknownRole, { "xml-roles": "foo" }, true); + const multiRole = findAccessibleChildByID(docAcc, "multiRole"); + testAttrs(multiRole, { "xml-roles": "foo main" }, true); + const landmarkMarkup = findAccessibleChildByID(docAcc, "landmarkMarkup"); + testAttrs(landmarkMarkup, { "xml-roles": "main" }, true); + const landmarkMarkupWithRole = findAccessibleChildByID( + docAcc, + "landmarkMarkupWithRole" + ); + testAttrs(landmarkMarkupWithRole, { "xml-roles": "banner" }, true); + const landmarkMarkupWithEmptyRole = findAccessibleChildByID( + docAcc, + "landmarkMarkupWithEmptyRole" + ); + testAttrs(landmarkMarkupWithEmptyRole, { "xml-roles": "main" }, true); + const markup = findAccessibleChildByID(docAcc, "markup"); + testAttrs(markup, { "xml-roles": "article" }, true); + const markupWithRole = findAccessibleChildByID(docAcc, "markupWithRole"); + testAttrs(markupWithRole, { "xml-roles": "banner" }, true); + const markupWithEmptyRole = findAccessibleChildByID( + docAcc, + "markupWithEmptyRole" + ); + testAttrs(markupWithEmptyRole, { "xml-roles": "article" }, true); + }, + { chrome: true, topLevel: true, iframe: true, remoteIframe: true } +); + +/** + * Test lie region attributes. + */ +addAccessibleTask( + ` +

noLive

+

liveMarkup

 +

ariaLive

+

liveRole

+

nonLiveRole

+

other

+ `, + async function (browser, docAcc) { + const noLive = findAccessibleChildByID(docAcc, "noLive"); + for (const acc of [noLive, noLive.firstChild]) { + testAbsentAttrs(acc, { + live: "", + "container-live": "", + "container-live-role": "", + atomic: "", + "container-atomic": "", + busy: "", + "container-busy": "", + relevant: "", + "container-relevant": "", + }); + } + const liveMarkup = findAccessibleChildByID(docAcc, "liveMarkup"); + testAttrs(liveMarkup, { live: "polite" }, true); + testAttrs(liveMarkup.firstChild, { "container-live": "polite" }, true); + const ariaLive = findAccessibleChildByID(docAcc, "ariaLive"); + testAttrs(ariaLive, { live: "polite" }, true); + testAttrs(ariaLive.firstChild, { "container-live": "polite" }, true); + const liveRole = findAccessibleChildByID(docAcc, "liveRole"); + testAttrs(liveRole, { live: "polite" }, true); + testAttrs( + liveRole.firstChild, + { "container-live": "polite", "container-live-role": "log" }, + true + ); + const nonLiveRole = findAccessibleChildByID(docAcc, "nonLiveRole"); + testAbsentAttrs(nonLiveRole, { live: "" }); + testAbsentAttrs(nonLiveRole.firstChild, { + "container-live": "", + "container-live-role": "", + }); + const other = findAccessibleChildByID(docAcc, "other"); + testAttrs( + other, + { atomic: "true", busy: "true", relevant: "additions" }, + true + ); + testAttrs( + other.firstChild, + { + "container-atomic": "true", + "container-busy": "true", + "container-relevant": "additions", + }, + true + ); + }, + { chrome: true, topLevel: true, iframe: true, remoteIframe: true } +); + +/** + * Test the id attribute. + */ +addAccessibleTask( + ` +

withId

+

noId

+ `, + async function (browser, docAcc) { + const withId = findAccessibleChildByID(docAcc, "withId"); + testAttrs(withId, { id: "withId" }, true); + const noId = findAccessibleChildByID(docAcc, "noIdParent").firstChild; + testAbsentAttrs(noId, { id: "" }); + }, + { chrome: true, topLevel: true, iframe: true, remoteIframe: true } +); + +/** + * Test the valuetext attribute. + */ +addAccessibleTask( + ` +
+
+
+ `, + async function (browser, docAcc) { + const valuenow = findAccessibleChildByID(docAcc, "valuenow"); + testAttrs(valuenow, { valuetext: "1" }, true); + const valuetext = findAccessibleChildByID(docAcc, "valuetext"); + testAttrs(valuetext, { valuetext: "text" }, true); + const noValue = findAccessibleChildByID(docAcc, "noValue"); + testAbsentAttrs(noValue, { valuetext: "valuetext" }); + }, + { chrome: true, topLevel: true, iframe: true, remoteIframe: true } +); + +function untilCacheAttrIs(acc, attr, val, msg) { + return untilCacheOk(() => { + try { + return acc.attributes.getStringProperty(attr) == val; + } catch (e) { + return false; + } + }, msg); +} + +function untilCacheAttrAbsent(acc, attr, msg) { + return untilCacheOk(() => { + try { + acc.attributes.getStringProperty(attr); + } catch (e) { + return true; + } + return false; + }, msg); +} + +/** + * Test the class attribute. + */ +addAccessibleTask( + ` +
oneClass
+
multiClass
+
noClass
+
mutate
+ `, + async function (browser, docAcc) { + const oneClass = findAccessibleChildByID(docAcc, "oneClass"); + testAttrs(oneClass, { class: "c1" }, true); + const multiClass = findAccessibleChildByID(docAcc, "multiClass"); + testAttrs(multiClass, { class: "c1 c2" }, true); + const noClass = findAccessibleChildByID(docAcc, "noClass"); + testAbsentAttrs(noClass, { class: "" }); + + const mutate = findAccessibleChildByID(docAcc, "mutate"); + testAbsentAttrs(mutate, { class: "" }); + info("Adding class to mutate"); + await invokeContentTask(browser, [], () => { + content.document.getElementById("mutate").className = "c1 c2"; + }); + await untilCacheAttrIs(mutate, "class", "c1 c2", "mutate class correct"); + info("Removing class from mutate"); + await invokeContentTask(browser, [], () => { + content.document.getElementById("mutate").removeAttribute("class"); + }); + await untilCacheAttrAbsent(mutate, "class", "mutate class not present"); + }, + { chrome: true, topLevel: true } +); + +/** + * Test the src attribute. + */ +const kImgUrl = "https://example.com/a11y/accessible/tests/mochitest/moz.png"; +addAccessibleTask( + ` + +alt + + `, + async function (browser, docAcc) { + const noAlt = findAccessibleChildByID(docAcc, "noAlt"); + testAttrs(noAlt, { src: kImgUrl }, true); + if (browser.isRemoteBrowser) { + // To avoid wasting memory, we don't cache src if there's a name. + const alt = findAccessibleChildByID(docAcc, "alt"); + testAbsentAttrs(alt, { src: "" }); + } + + const mutate = findAccessibleChildByID(docAcc, "mutate"); + testAbsentAttrs(mutate, { src: "" }); + info("Adding src to mutate"); + await invokeContentTask(browser, [kImgUrl], url => { + content.document.getElementById("mutate").src = url; + }); + await untilCacheAttrIs(mutate, "src", kImgUrl, "mutate src correct"); + info("Removing src from mutate"); + await invokeContentTask(browser, [], () => { + content.document.getElementById("mutate").removeAttribute("src"); + }); + await untilCacheAttrAbsent(mutate, "src", "mutate src not present"); + }, + { chrome: true, topLevel: true } +); + +/** + * Test the placeholder attribute. + */ +addAccessibleTask( + ` + + + + + + + `, + async function (browser, docAcc) { + const htmlWithLabel = findAccessibleChildByID(docAcc, "htmlWithLabel"); + testAttrs(htmlWithLabel, { placeholder: "HTML" }, true); + const htmlNoLabel = findAccessibleChildByID(docAcc, "htmlNoLabel"); + // placeholder is used as name, so not exposed as attribute. + testAbsentAttrs(htmlNoLabel, { placeholder: "" }); + const ariaWithLabel = findAccessibleChildByID(docAcc, "ariaWithLabel"); + testAttrs(ariaWithLabel, { placeholder: "ARIA" }, true); + const ariaNoLabel = findAccessibleChildByID(docAcc, "ariaNoLabel"); + // No label doesn't impact aria-placeholder. + testAttrs(ariaNoLabel, { placeholder: "ARIA" }, true); + const both = findAccessibleChildByID(docAcc, "both"); + testAttrs(both, { placeholder: "HTML" }, true); + + const mutate = findAccessibleChildByID(docAcc, "mutate"); + testAbsentAttrs(mutate, { placeholder: "" }); + info("Adding label to mutate"); + await invokeContentTask(browser, [], () => { + content.document + .getElementById("mutate") + .setAttribute("aria-label", "label"); + }); + await untilCacheAttrIs( + mutate, + "placeholder", + "HTML", + "mutate placeholder correct" + ); + info("Removing mutate placeholder"); + await invokeContentTask(browser, [], () => { + content.document.getElementById("mutate").removeAttribute("placeholder"); + }); + await untilCacheAttrAbsent( + mutate, + "placeholder", + "mutate placeholder not present" + ); + info("Setting mutate aria-placeholder"); + await invokeContentTask(browser, [], () => { + content.document + .getElementById("mutate") + .setAttribute("aria-placeholder", "ARIA"); + }); + await untilCacheAttrIs( + mutate, + "placeholder", + "ARIA", + "mutate placeholder correct" + ); + info("Setting mutate placeholder"); + await invokeContentTask(browser, [], () => { + content.document + .getElementById("mutate") + .setAttribute("placeholder", "HTML"); + }); + await untilCacheAttrIs( + mutate, + "placeholder", + "HTML", + "mutate placeholder correct" + ); + }, + { chrome: true, topLevel: true } +); diff --git a/accessible/tests/browser/e10s/browser_caching_description.js b/accessible/tests/browser/e10s/browser_caching_description.js new file mode 100644 index 0000000000..d489620e16 --- /dev/null +++ b/accessible/tests/browser/e10s/browser_caching_description.js @@ -0,0 +1,280 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/* import-globals-from ../../mochitest/name.js */ +loadScripts({ name: "name.js", dir: MOCHITESTS_DIR }); + +/** + * Test data has the format of: + * { + * desc {String} description for better logging + * expected {String} expected description value for a given accessible + * attrs {?Array} an optional list of attributes to update + * waitFor {?Array} an optional list of accessible events to wait for when + * attributes are updated + * } + */ +const tests = [ + { + desc: "No description when there are no @alt, @title and @aria-describedby", + expected: "", + }, + { + desc: "Description from @aria-describedby attribute", + attrs: [ + { + attr: "aria-describedby", + value: "description", + }, + ], + waitFor: [[EVENT_DESCRIPTION_CHANGE, "image"]], + expected: "aria description", + }, + { + desc: + "No description from @aria-describedby since it is the same as the " + + "@alt attribute which is used as the name", + attrs: [ + { + attr: "alt", + value: "aria description", + }, + ], + waitFor: [[EVENT_NAME_CHANGE, "image"]], + expected: "", + }, + { + desc: + "Description from @aria-describedby attribute when @alt and " + + "@aria-describedby are not the same", + attrs: [ + { + attr: "aria-describedby", + value: "description2", + }, + ], + waitFor: [[EVENT_DESCRIPTION_CHANGE, "image"]], + expected: "another description", + }, + { + desc: "No description change when @alt is dropped but @aria-describedby remains", + attrs: [ + { + attr: "alt", + }, + ], + waitFor: [[EVENT_NAME_CHANGE, "image"]], + expected: "another description", + }, + { + desc: + "Description from @aria-describedby attribute when @title (used for " + + "name) and @aria-describedby are not the same", + attrs: [ + { + attr: "title", + value: "title", + }, + ], + waitFor: [[EVENT_NAME_CHANGE, "image"]], + expected: "another description", + }, + { + desc: + "No description from @aria-describedby since it is the same as the " + + "@title attribute which is used as the name", + attrs: [ + { + attr: "title", + value: "another description", + }, + ], + waitFor: [[EVENT_NAME_CHANGE, "image"]], + expected: "", + }, + { + desc: "No description with only @title attribute which is used as the name", + attrs: [ + { + attr: "aria-describedby", + }, + ], + waitFor: [[EVENT_DESCRIPTION_CHANGE, "image"]], + expected: "", + }, + { + desc: + "Description from @title attribute when @alt and @atitle are not the " + + "same", + attrs: [ + { + attr: "alt", + value: "aria description", + }, + ], + waitFor: [[EVENT_NAME_CHANGE, "image"]], + expected: "another description", + }, + { + desc: + "No description from @title since it is the same as the @alt " + + "attribute which is used as the name", + attrs: [ + { + attr: "alt", + value: "another description", + }, + ], + waitFor: [[EVENT_NAME_CHANGE, "image"]], + expected: "", + }, + { + desc: + "No description from @aria-describedby since it is the same as the " + + "@alt (used for name) and @title attributes", + attrs: [ + { + attr: "aria-describedby", + value: "description2", + }, + ], + waitFor: [[EVENT_DESCRIPTION_CHANGE, "image"]], + expected: "", + }, + { + desc: + "Description from @aria-describedby attribute when it is different " + + "from @alt (used for name) and @title attributes", + attrs: [ + { + attr: "aria-describedby", + value: "description", + }, + ], + waitFor: [[EVENT_DESCRIPTION_CHANGE, "image"]], + expected: "aria description", + }, + { + desc: + "No description from @aria-describedby since it is the same as the " + + "@alt attribute (used for name) but different from title", + attrs: [ + { + attr: "alt", + value: "aria description", + }, + ], + waitFor: [[EVENT_NAME_CHANGE, "image"]], + expected: "", + }, + { + desc: + "Description from @aria-describedby attribute when @alt (used for " + + "name) and @aria-describedby are not the same but @title and " + + "aria-describedby are", + attrs: [ + { + attr: "aria-describedby", + value: "description2", + }, + ], + waitFor: [[EVENT_DESCRIPTION_CHANGE, "image"]], + expected: "another description", + }, +]; + +/** + * Test caching of accessible object description + */ +addAccessibleTask( + ` +

aria description

+

another description

+ `, + async function (browser, accDoc) { + let imgAcc = findAccessibleChildByID(accDoc, "image"); + + for (let { desc, waitFor, attrs, expected } of tests) { + info(desc); + let onUpdate; + if (waitFor) { + onUpdate = waitForOrderedEvents(waitFor); + } + if (attrs) { + for (let { attr, value } of attrs) { + await invokeSetAttribute(browser, "image", attr, value); + } + } + await onUpdate; + // When attribute change (alt) triggers reorder event, accessible will + // become defunct. + if (isDefunct(imgAcc)) { + imgAcc = findAccessibleChildByID(accDoc, "image"); + } + testDescr(imgAcc, expected); + } + }, + { iframe: true, remoteIframe: true } +); + +/** + * Test that the description is updated when the content of a hidden aria-describedby + * subtree changes. + */ +addAccessibleTask( + ` +`, + async function (browser, docAcc) { + const button = findAccessibleChildByID(docAcc, "button"); + testDescr(button, "a"); + info("Changing aria-description"); + let changed = waitForEvent(EVENT_DESCRIPTION_CHANGE, button); + await invokeSetAttribute(browser, "button", "aria-description", "b"); + await changed; + testDescr(button, "b"); + info("Removing aria-description"); + changed = waitForEvent(EVENT_DESCRIPTION_CHANGE, button); + await invokeSetAttribute(browser, "button", "aria-description"); + await changed; + testDescr(button, ""); + info("Setting aria-description"); + changed = waitForEvent(EVENT_DESCRIPTION_CHANGE, button); + await invokeSetAttribute(browser, "button", "aria-description", "c"); + await changed; + testDescr(button, "c"); + }, + { chrome: true, topLevel: true, iframe: true, remoteIframe: true } +); diff --git a/accessible/tests/browser/e10s/browser_caching_document_props.js b/accessible/tests/browser/e10s/browser_caching_document_props.js new file mode 100644 index 0000000000..787e979045 --- /dev/null +++ b/accessible/tests/browser/e10s/browser_caching_document_props.js @@ -0,0 +1,80 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/* import-globals-from ../../mochitest/role.js */ +loadScripts({ name: "role.js", dir: MOCHITESTS_DIR }); + +addAccessibleTask( + "e10s/doc_treeupdate_whitespace.html", + async function (browser, docAcc) { + info("Testing top level doc"); + queryInterfaces(docAcc, [nsIAccessibleDocument]); + const topUrl = + (browser.isRemoteBrowser ? CURRENT_CONTENT_DIR : CURRENT_DIR) + + "e10s/doc_treeupdate_whitespace.html"; + is(docAcc.URL, topUrl, "Initial URL correct"); + is(docAcc.mimeType, "text/html", "Mime type is correct"); + info("Changing URL"); + await invokeContentTask(browser, [], () => { + content.history.pushState( + null, + "", + content.document.location.href + "/after" + ); + }); + is(docAcc.URL, topUrl + "/after", "URL correct after change"); + + // We can't use the harness to manage iframes for us because it uses data + // URIs for in-process iframes, but data URIs don't support + // history.pushState. + + async function testIframe() { + queryInterfaces(iframeDocAcc, [nsIAccessibleDocument]); + is(iframeDocAcc.URL, src, "Initial URL correct"); + is(iframeDocAcc.mimeType, "text/html", "Mime type is correct"); + info("Changing URL"); + await invokeContentTask(browser, [], async () => { + await SpecialPowers.spawn(content.iframe, [], () => { + content.history.pushState( + null, + "", + content.document.location.href + "/after" + ); + }); + }); + is(iframeDocAcc.URL, src + "/after", "URL correct after change"); + } + + info("Testing same origin (in-process) iframe"); + // eslint-disable-next-line @microsoft/sdl/no-insecure-url + let src = "http://example.com/initial.html"; + let loaded = waitForEvent( + EVENT_DOCUMENT_LOAD_COMPLETE, + evt => evt.accessible.parent.parent == docAcc + ); + await invokeContentTask(browser, [src], cSrc => { + content.iframe = content.document.createElement("iframe"); + content.iframe.src = cSrc; + content.document.body.append(content.iframe); + }); + let iframeDocAcc = (await loaded).accessible; + await testIframe(); + + info("Testing different origin (out-of-process) iframe"); + // eslint-disable-next-line @microsoft/sdl/no-insecure-url + src = "http://example.net/initial.html"; + loaded = waitForEvent( + EVENT_DOCUMENT_LOAD_COMPLETE, + evt => evt.accessible.parent.parent == docAcc + ); + await invokeContentTask(browser, [src], cSrc => { + content.iframe.src = cSrc; + }); + iframeDocAcc = (await await loaded).accessible; + await testIframe(); + }, + { chrome: true, topLevel: true } +); diff --git a/accessible/tests/browser/e10s/browser_caching_domnodeid.js b/accessible/tests/browser/e10s/browser_caching_domnodeid.js new file mode 100644 index 0000000000..722cc9a970 --- /dev/null +++ b/accessible/tests/browser/e10s/browser_caching_domnodeid.js @@ -0,0 +1,32 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/** + * Test DOM ID caching on remotes. + */ +addAccessibleTask( + '
', + async function (browser, accDoc) { + const div = findAccessibleChildByID(accDoc, "div"); + ok(div, "Got accessible with 'div' ID."); + + let contentPromise = invokeContentTask(browser, [], () => { + content.document.getElementById("div").id = "foo"; + }); + // We don't await for content task to return because we want to exercise the + // untilCacheIs function and demonstrate that it can await for a passing + // `is` test. + await untilCacheIs( + () => div.id, + "foo", + "ID is correct and updated in cache" + ); + + // Don't leave test without the content task promise resolved. + await contentPromise; + }, + { iframe: true, remoteIframe: true } +); diff --git a/accessible/tests/browser/e10s/browser_caching_hyperlink.js b/accessible/tests/browser/e10s/browser_caching_hyperlink.js new file mode 100644 index 0000000000..4b3f8a1bda --- /dev/null +++ b/accessible/tests/browser/e10s/browser_caching_hyperlink.js @@ -0,0 +1,228 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at https://mozilla.org/MPL/2.0/. */ + +"use strict"; + +function testLinkIndexAtOffset(id, offset, index) { + let htAcc = getAccessible(id, [nsIAccessibleHyperText]); + is( + htAcc.getLinkIndexAtOffset(offset), + index, + "Wrong link index at offset " + offset + " for ID " + id + "!" + ); +} + +function testThis( + paragraph, + docURI, + id, + charIndex, + expectedLinkIndex, + expectedAnchors, + expectedURIs, + valid = true +) { + testLinkIndexAtOffset(paragraph, charIndex, expectedLinkIndex); + + let linkAcc = paragraph.getLinkAt(expectedLinkIndex); + ok(linkAcc, "No accessible for link " + id + "!"); + + is(linkAcc.valid, valid, `${id} is valid.`); + + let linkIndex = paragraph.getLinkIndex(linkAcc); + is(linkIndex, expectedLinkIndex, "Wrong link index for " + id + "!"); + + is(linkAcc.anchorCount, expectedAnchors.length, "Correct number of anchors"); + for (let i = 0; i < expectedAnchors.length; i++) { + let uri = linkAcc.getURI(i); + is( + (uri ? uri.spec : "").replace(docURI, ""), + expectedURIs[i], + `Wrong anchor URI at ${i} for "${id}"` + ); + is( + getAccessibleDOMNodeID(linkAcc.getAnchor(i)), + expectedAnchors[i], + `Wrong anchor at ${i} for "${id}"` + ); + } +} + +/** + * Test hyperlinks + */ +addAccessibleTask( + ` +


Simple link:
Mozilla Foundation
ARIA link:
Mozilla Foundation Home
Invalid, non-focusable hyperlink:
Invalid link
Image map:

Empty link:

Link with embedded span
Heise Online
Named anchor, must not have "linked" state for it to be exposed correctly:
This should never be of state_linked +

+ `, + function (browser, accDoc) { + const paragraph = findAccessibleChildByID(accDoc, "testParagraph", [ + nsIAccessibleHyperText, + ]); + is(paragraph.linkCount, 7, "Wrong link count for paragraph!"); + + const docURI = accDoc.URL; + // normal hyperlink + testThis( + paragraph, + docURI, + "NormalHyperlink", + 14, + 0, + ["NormalHyperlink"], + ["https://www.mozilla.org/"] + ); + + // ARIA hyperlink + testThis( + paragraph, + docURI, + "AriaHyperlink", + 27, + 1, + ["AriaHyperlink"], + [""] + ); + + // ARIA hyperlink with status invalid + testThis( + paragraph, + docURI, + "InvalidAriaHyperlink", + 63, + 2, + ["InvalidAriaHyperlink"], + [""], + false + ); + + // image map, but not its link children. They are not part of hypertext. + testThis( + paragraph, + docURI, + "imgmap", + 76, + 3, + ["b", "a"], + [ + "https://www.bbc.co.uk/radio4/atoz/index.shtml#b", + "https://www.bbc.co.uk/radio4/atoz/index.shtml#a", + ] + ); + + // empty hyperlink + testThis(paragraph, docURI, "emptyLink", 90, 4, ["emptyLink"], [""]); + + // normal hyperlink with embedded span + testThis( + paragraph, + docURI, + "LinkWithSpan", + 116, + 5, + ["LinkWithSpan"], + ["https://www.heise.de/"] + ); + + // Named anchor + testThis(paragraph, docURI, "namedAnchor", 193, 6, ["namedAnchor"], [""]); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +/** + * Test paragraph with link + */ +addAccessibleTask( + ` +

mozilla.org

+ `, + function (browser, accDoc) { + // Paragraph with link + const p = findAccessibleChildByID(accDoc, "p", [nsIAccessibleHyperText]); + const link = p.getLinkAt(0); + is(link, p.getChildAt(0), "Wrong link for p2"); + is(p.linkCount, 1, "Wrong link count for p2"); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +/** + * Test paragraph with link + */ +addAccessibleTask( + ` +

mozillamozilla text mozilla

+ `, + function (browser, accDoc) { + // Paragraph with link + const p = findAccessibleChildByID(accDoc, "p", [nsIAccessibleHyperText]); + + // getLinkIndexAtOffset, causes the offsets to be cached; + testLinkIndexAtOffset(p, 0, 0); // 1st 'mozilla' link + testLinkIndexAtOffset(p, 1, 1); // 2nd 'mozilla' link + testLinkIndexAtOffset(p, 2, -1); // ' ' of ' te' text node + testLinkIndexAtOffset(p, 3, -1); // 't' of ' te' text node + testLinkIndexAtOffset(p, 5, -1); // 'x' of 'xt ' text node + testLinkIndexAtOffset(p, 7, -1); // ' ' of 'xt ' text node + testLinkIndexAtOffset(p, 8, 2); // 3d 'mozilla' link + testLinkIndexAtOffset(p, 9, 2); // the end, latest link + + // the second pass to make sure link indexes are calculated propertly from + // cached offsets. + testLinkIndexAtOffset(p, 0, 0); // 1st 'mozilla' link + testLinkIndexAtOffset(p, 1, 1); // 2nd 'mozilla' link + testLinkIndexAtOffset(p, 2, -1); // ' ' of ' te' text node + testLinkIndexAtOffset(p, 3, -1); // 't' of ' te' text node + testLinkIndexAtOffset(p, 5, -1); // 'x' of 'xt ' text node + testLinkIndexAtOffset(p, 7, -1); // ' ' of 'xt ' text node + testLinkIndexAtOffset(p, 8, 2); // 3d 'mozilla' link + testLinkIndexAtOffset(p, 9, 2); // the end, latest link + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); diff --git a/accessible/tests/browser/e10s/browser_caching_innerHTML.js b/accessible/tests/browser/e10s/browser_caching_innerHTML.js new file mode 100644 index 0000000000..7baee32e26 --- /dev/null +++ b/accessible/tests/browser/e10s/browser_caching_innerHTML.js @@ -0,0 +1,48 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/** + * Test caching of innerHTML on math elements for Windows clients. + */ +addAccessibleTask( + ` +

test

+xy + `, + async function (browser, docAcc) { + const p = findAccessibleChildByID(docAcc, "p"); + let hasHtml; + try { + p.cache.getStringProperty("html"); + hasHtml = true; + } catch (e) { + hasHtml = false; + } + ok(!hasHtml, "p doesn't have cached html"); + + const math = findAccessibleChildByID(docAcc, "math"); + is( + math.cache.getStringProperty("html"), + "xy", + "math cached html is correct" + ); + + info("Mutating math"); + await invokeContentTask(browser, [], () => { + content.document.querySelectorAll("mi")[1].textContent = "z"; + }); + await untilCacheIs( + () => math.cache.getStringProperty("html"), + "xz", + "math cached html is correct after mutation" + ); + }, + { + topLevel: true, + iframe: true, + remoteIframe: true, + } +); diff --git a/accessible/tests/browser/e10s/browser_caching_interfaces.js b/accessible/tests/browser/e10s/browser_caching_interfaces.js new file mode 100644 index 0000000000..c83d486bc6 --- /dev/null +++ b/accessible/tests/browser/e10s/browser_caching_interfaces.js @@ -0,0 +1,59 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/** + * Test caching of accessible interfaces + */ +addAccessibleTask( + ` + + + + + +
hello
+ `, + async function (browser, accDoc) { + ok( + accDoc instanceof nsIAccessibleDocument, + "Document has Document interface" + ); + ok( + accDoc instanceof nsIAccessibleHyperText, + "Document has HyperText interface" + ); + ok( + findAccessibleChildByID(accDoc, "img") instanceof nsIAccessibleImage, + "img has Image interface" + ); + ok( + findAccessibleChildByID(accDoc, "select") instanceof + nsIAccessibleSelectable, + "select has Selectable interface" + ); + ok( + findAccessibleChildByID(accDoc, "number-input") instanceof + nsIAccessibleValue, + "number-input has Value interface" + ); + ok( + findAccessibleChildByID(accDoc, "table") instanceof nsIAccessibleTable, + "table has Table interface" + ); + ok( + findAccessibleChildByID(accDoc, "cell") instanceof nsIAccessibleTableCell, + "cell has TableCell interface" + ); + ok( + findAccessibleChildByID(accDoc, "link") instanceof nsIAccessibleHyperLink, + "link has HyperLink interface" + ); + ok( + findAccessibleChildByID(accDoc, "link") instanceof nsIAccessibleHyperText, + "link has HyperText interface" + ); + } +); diff --git a/accessible/tests/browser/e10s/browser_caching_large_update.js b/accessible/tests/browser/e10s/browser_caching_large_update.js new file mode 100644 index 0000000000..ccf8a86921 --- /dev/null +++ b/accessible/tests/browser/e10s/browser_caching_large_update.js @@ -0,0 +1,66 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/** + * Test a large update which adds many thousands of Accessibles with a + * lot of content in each. + */ +addAccessibleTask( + `
`, + async function (browser, docAcc) { + let shown = waitForEvent(EVENT_SHOW, "main"); + await invokeContentTask(browser, [], () => { + // Make a long string. + let text = ""; + for (let i = 0; i < 100; ++i) { + text += "a"; + } + // Create lots of nodes which include the long string. + const contMain = content.document.getElementById("main"); + // 15000 children of main. + for (let w = 0; w < 15000; ++w) { + // Each of those goes 9 deep. + let parent = contMain; + for (let d = 0; d < 10; ++d) { + const div = content.document.createElement("div"); + div.setAttribute("aria-label", `${w} ${d} ${text}`); + parent.append(div); + parent = div; + } + } + contMain.hidden = false; + }); + const main = (await shown).accessible; + is(main.childCount, 15000, "main has correct number of children"); + + // We don't want to output passes for every check, since that would output + // hundreds of thousands of lines, which slows the test to a crawl. Instead, + // output any failures and keep track of overall success/failure. + let treeOk = true; + function check(val, msg) { + if (!val) { + ok(false, msg); + treeOk = false; + } + } + + info("Checking tree"); + for (let w = 0; w < 15000; ++w) { + let acc = main.getChildAt(w); + let parent = main; + for (let d = 0; d < 10; ++d) { + check(acc, `Got child ${w} depth ${d}`); + const name = `${w} ${d}`; + check(acc.name.startsWith(name + " "), `${name}: correct name`); + check(acc.parent == parent, `${name}: correct parent`); + parent = acc; + acc = acc.firstChild; + } + } + // check() sets treeOk to false for any failure. + ok(treeOk, "Tree is correct"); + } +); diff --git a/accessible/tests/browser/e10s/browser_caching_name.js b/accessible/tests/browser/e10s/browser_caching_name.js new file mode 100644 index 0000000000..0c1f419b97 --- /dev/null +++ b/accessible/tests/browser/e10s/browser_caching_name.js @@ -0,0 +1,539 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +/* import-globals-from ../../mochitest/name.js */ +loadScripts({ name: "name.js", dir: MOCHITESTS_DIR }); + +/** + * Rules for name tests that are inspired by + * accessible/tests/mochitest/name/markuprules.xul + * + * Each element in the list of rules represents a name calculation rule for a + * particular test case. + * + * The rules have the following format: + * { attr } - calculated from attribute + * { elm } - calculated from another element + * { fromsubtree } - calculated from element's subtree + * + */ +const ARIARule = [{ attr: "aria-labelledby" }, { attr: "aria-label" }]; +const HTMLControlHeadRule = [...ARIARule, { elm: "label" }]; +const rules = { + CSSContent: [{ elm: "style" }, { fromsubtree: true }], + HTMLARIAGridCell: [...ARIARule, { fromsubtree: true }, { attr: "title" }], + HTMLControl: [ + ...HTMLControlHeadRule, + { fromsubtree: true }, + { attr: "title" }, + ], + HTMLElm: [...ARIARule, { attr: "title" }], + HTMLImg: [...ARIARule, { attr: "alt" }, { attr: "title" }], + HTMLImgEmptyAlt: [...ARIARule, { attr: "title" }, { attr: "alt" }], + HTMLInputButton: [ + ...HTMLControlHeadRule, + { attr: "value" }, + { attr: "title" }, + ], + HTMLInputImage: [ + ...HTMLControlHeadRule, + { attr: "alt" }, + { attr: "value" }, + { attr: "title" }, + ], + HTMLInputImageNoValidSrc: [ + ...HTMLControlHeadRule, + { attr: "alt" }, + { attr: "value" }, + ], + HTMLInputReset: [...HTMLControlHeadRule, { attr: "value" }], + HTMLInputSubmit: [...HTMLControlHeadRule, { attr: "value" }], + HTMLLink: [...ARIARule, { fromsubtree: true }, { attr: "title" }], + HTMLLinkImage: [...ARIARule, { fromsubtree: true }, { attr: "title" }], + HTMLOption: [ + ...ARIARule, + { attr: "label" }, + { fromsubtree: true }, + { attr: "title" }, + ], + HTMLTable: [ + ...ARIARule, + { elm: "caption" }, + { attr: "summary" }, + { attr: "title" }, + ], +}; + +const markupTests = [ + { + id: "btn", + ruleset: "HTMLControl", + markup: ` + test2 + test3 + + `, + expected: ["test2 test3", "test1", "test4", "press me", "test5"], + }, + { + id: "btn", + ruleset: "HTMLInputButton", + markup: ` + test2 + test3 + + `, + expected: [ + "test2 test3", + "test1", + "test4", + "name from value", + "name from title", + ], + }, + { + id: "btn-submit", + ruleset: "HTMLInputSubmit", + markup: ` + test2 + test3 + + `, + expected: ["test2 test3", "test1", "test4", "name from value"], + }, + { + id: "btn-reset", + ruleset: "HTMLInputReset", + markup: ` + test2 + test3 + + `, + expected: ["test2 test3", "test1", "test4", "name from value"], + }, + { + id: "btn-image", + ruleset: "HTMLInputImage", + markup: ` + test2 + test3 + + `, + expected: [ + "test2 test3", + "test1", + "test4", + "name from alt", + "name from value", + "name from title", + ], + }, + { + id: "btn-image", + ruleset: "HTMLInputImageNoValidSrc", + markup: ` + test2 + test3 + + `, + expected: [ + "test2 test3", + "test1", + "test4", + "name from alt", + "name from value", + ], + }, + { + id: "opt", + ruleset: "HTMLOption", + markup: ` + test2 + test3 + `, + expected: ["test2 test3", "test1", "test4", "option1", "test5"], + }, + { + id: "img", + ruleset: "HTMLImg", + markup: ` + test2 + test3 + Mozilla logo`, + expected: [ + "test2 test3", + "Logo of Mozilla", + "Mozilla logo", + "This is a logo", + ], + }, + { + id: "tc", + ruleset: "HTMLElm", + markup: ` + test2 + test3 + + + + + +
+

This is a paragraph

+ This is a link +
    +
  • This is a list
    • +
+
`, + expected: ["test2 test3", "test1", "test5"], + }, + { + id: "gc", + ruleset: "HTMLARIAGridCell", + markup: ` + test2 + test3 + + + + + +
+

This is a paragraph

+ This is a link +
    +
  • Listitem1
    • +
  • Listitem2
    • +
+
`, + expected: [ + "test2 test3", + "test1", + "This is a paragraph This is a link \u2022 Listitem1 \u2022 Listitem2", + "This is a paragraph This is a link This is a list", + ], + }, + { + id: "t", + ruleset: "HTMLTable", + markup: ` + lby_tst6_1 + lby_tst6_2 + + + + + + + +
caption_tst6
cell1cell2
`, + expected: [ + "lby_tst6_1 lby_tst6_2", + "arialabel_tst6", + "caption_tst6", + "summary_tst6", + "title_tst6", + ], + }, + { + id: "btn", + ruleset: "CSSContent", + markup: ` +
+ + +
`, + expected: ["do not press me", "press me"], + }, + { + // TODO: uncomment when Bug-1256382 is resoved. + // id: 'li', + // ruleset: 'CSSContent', + // markup: ` + // + // `, + // expected: ['1. Listitem', `${String.fromCharCode(0x2022)} Listitem`] + // }, { + id: "a", + ruleset: "HTMLLink", + markup: ` + test2 + test3 + test5`, + expected: ["test2 test3", "test1", "test5", "test4"], + }, + { + id: "a-img", + ruleset: "HTMLLinkImage", + markup: ` + test2 + test3 + test5`, + expected: ["test2 test3", "test1", "test5", "test4"], + }, +]; + +/** + * Test accessible name that is calculated from an attribute, remove the + * attribute before proceeding to the next name test. If attribute removal + * results in a reorder or text inserted event - wait for it. If accessible + * becomes defunct, update its reference using the one that is attached to one + * of the above events. + * @param {Object} browser current "tabbrowser" element + * @param {Object} target { acc, id } structure that contains an + * accessible and its content element + * id. + * @param {Object} rule current attr rule for name calculation + * @param {[type]} expected expected name value + */ +async function testAttrRule(browser, target, rule, expected) { + let { id, acc } = target; + let { attr } = rule; + + testName(acc, expected); + + let nameChange = waitForEvent(EVENT_NAME_CHANGE, id); + await invokeContentTask(browser, [id, attr], (contentId, contentAttr) => { + content.document.getElementById(contentId).removeAttribute(contentAttr); + }); + let event = await nameChange; + + // Update accessible just in case it is now defunct. + target.acc = findAccessibleChildByID(event.accessible, id); +} + +/** + * Test accessible name that is calculated from an element name, remove the + * element before proceeding to the next name test. If element removal results + * in a reorder event - wait for it. If accessible becomes defunct, update its + * reference using the one that is attached to a possible reorder event. + * @param {Object} browser current "tabbrowser" element + * @param {Object} target { acc, id } structure that contains an + * accessible and its content element + * id. + * @param {Object} rule current elm rule for name calculation + * @param {[type]} expected expected name value + */ +async function testElmRule(browser, target, rule, expected) { + let { id, acc } = target; + let { elm } = rule; + + testName(acc, expected); + let nameChange = waitForEvent(EVENT_NAME_CHANGE, id); + + await invokeContentTask(browser, [elm], contentElm => { + content.document.querySelector(`${contentElm}`).remove(); + }); + let event = await nameChange; + + // Update accessible just in case it is now defunct. + target.acc = findAccessibleChildByID(event.accessible, id); +} + +/** + * Test accessible name that is calculated from its subtree, remove the subtree + * and wait for a reorder event before proceeding to the next name test. If + * accessible becomes defunct, update its reference using the one that is + * attached to a reorder event. + * @param {Object} browser current "tabbrowser" element + * @param {Object} target { acc, id } structure that contains an + * accessible and its content element + * id. + * @param {Object} rule current subtree rule for name calculation + * @param {[type]} expected expected name value + */ +async function testSubtreeRule(browser, target, rule, expected) { + let { id, acc } = target; + + testName(acc, expected); + let nameChange = waitForEvent(EVENT_NAME_CHANGE, id); + + await invokeContentTask(browser, [id], contentId => { + let elm = content.document.getElementById(contentId); + while (elm.firstChild) { + elm.firstChild.remove(); + } + }); + let event = await nameChange; + + // Update accessible just in case it is now defunct. + target.acc = findAccessibleChildByID(event.accessible, id); +} + +/** + * Iterate over a list of rules and test accessible names for each one of the + * rules. + * @param {Object} browser current "tabbrowser" element + * @param {Object} target { acc, id } structure that contains an + * accessible and its content element + * id. + * @param {Array} ruleset A list of rules to test a target with + * @param {Array} expected A list of expected name value for each rule + */ +async function testNameRule(browser, target, ruleset, expected) { + for (let i = 0; i < ruleset.length; ++i) { + let rule = ruleset[i]; + let testFn; + if (rule.attr) { + testFn = testAttrRule; + } else if (rule.elm) { + testFn = testElmRule; + } else if (rule.fromsubtree) { + testFn = testSubtreeRule; + } + await testFn(browser, target, rule, expected[i]); + } +} + +markupTests.forEach(({ id, ruleset, markup, expected }) => + addAccessibleTask( + markup, + async function (browser, accDoc) { + const observer = { + observe(subject, topic, data) { + const event = subject.QueryInterface(nsIAccessibleEvent); + console.log(eventToString(event)); + }, + }; + Services.obs.addObserver(observer, "accessible-event"); + // Find a target accessible from an accessible subtree. + let acc = findAccessibleChildByID(accDoc, id); + let target = { id, acc }; + await testNameRule(browser, target, rules[ruleset], expected); + Services.obs.removeObserver(observer, "accessible-event"); + }, + { iframe: true, remoteIframe: true } + ) +); + +/** + * Test caching of the document title. + */ +addAccessibleTask( + ``, + async function (browser, docAcc) { + let nameChanged = waitForEvent(EVENT_NAME_CHANGE, docAcc); + await invokeContentTask(browser, [], () => { + content.document.title = "new title"; + }); + await nameChanged; + testName(docAcc, "new title"); + }, + { chrome: true, topLevel: true, iframe: true, remoteIframe: true } +); + +/** + * Test that the name is updated when the content of a hidden aria-labelledby + * subtree changes. + */ +addAccessibleTask( + ` + + + `, + async function (browser, docAcc) { + const b1 = findAccessibleChildByID(docAcc, "b1"); + const b2 = findAccessibleChildByID(docAcc, "b2"); + + let focused = waitForEvent(EVENT_FOCUS, b1); + await invokeFocus(browser, "b1"); + await focused; + testStates(docAcc, 0, 0, STATE_FOCUSED); + testStates(b1, STATE_FOCUSED); + testStates(b2, 0, 0, STATE_FOCUSED); + + focused = waitForEvent(EVENT_FOCUS, b2); + await invokeFocus(browser, "b2"); + await focused; + testStates(b2, STATE_FOCUSED); + testStates(b1, 0, 0, STATE_FOCUSED); + }, + { iframe: true, remoteIframe: true } +); + +/** + * Test that the document initially gets the focused state. + * We can't do this in the test above because that test runs in iframes as well + * as a top level document. + */ +addAccessibleTask( + ` + + + `, + async function (browser, docAcc) { + testStates(docAcc, STATE_FOCUSED); + } +); + +/** + * Test caching of the focused state in iframes. + */ +addAccessibleTask( + ` + + `, + async function (browser, iframeDocAcc, topDocAcc) { + testStates(topDocAcc, STATE_FOCUSED); + const button = findAccessibleChildByID(iframeDocAcc, "button"); + testStates(button, 0, 0, STATE_FOCUSED); + let focused = waitForEvent(EVENT_FOCUS, button); + info("Focusing button in iframe"); + button.takeFocus(); + await focused; + testStates(topDocAcc, 0, 0, STATE_FOCUSED); + testStates(button, STATE_FOCUSED); + }, + { topLevel: false, iframe: true, remoteIframe: true } +); + +/** + * Test caching of the focusable state in iframes which are initially visibility: hidden. + */ +addAccessibleTask( + ` + +span`, + async function (browser, topDocAcc) { + info("Changing visibility on iframe"); + let reordered = waitForEvent(EVENT_REORDER, topDocAcc); + await SpecialPowers.spawn(browser, [DEFAULT_IFRAME_ID], iframeId => { + content.document.getElementById(iframeId).style.visibility = ""; + }); + await reordered; + // The iframe doc a11y tree might not be built yet. + const iframeDoc = await TestUtils.waitForCondition(() => + findAccessibleChildByID(topDocAcc, DEFAULT_IFRAME_DOC_BODY_ID) + ); + // Log/verify whether this is an in-process or OOP iframe. + await comparePIDs(browser, gIsRemoteIframe); + const button = findAccessibleChildByID(iframeDoc, "button"); + testStates(button, STATE_FOCUSABLE); + const span = findAccessibleChildByID(iframeDoc, "span"); + ok(span, "span Accessible exists"); + testStates(span, STATE_FOCUSABLE); + }, + { + topLevel: false, + iframe: true, + remoteIframe: true, + iframeAttrs: { style: "visibility: hidden;" }, + skipFissionDocLoad: true, + } +); + +function checkOpacity(acc, present) { + let [, extraState] = getStates(acc); + let currOpacity = extraState & EXT_STATE_OPAQUE; + return present ? currOpacity : !currOpacity; +} + +/** + * Test caching of the OPAQUE1 state. + */ +addAccessibleTask( + ` +
hello world
+ `, + async function (browser, docAcc) { + const div = findAccessibleChildByID(docAcc, "div"); + await untilCacheOk(() => checkOpacity(div, true), "Found opaque state"); + + await invokeContentTask(browser, [], () => { + let elm = content.document.getElementById("div"); + elm.style = "opacity: 0.4;"; + elm.offsetTop; // Flush layout. + }); + + await untilCacheOk( + () => checkOpacity(div, false), + "Did not find opaque state" + ); + + await invokeContentTask(browser, [], () => { + let elm = content.document.getElementById("div"); + elm.style = "opacity: 1;"; + elm.offsetTop; // Flush layout. + }); + + await untilCacheOk(() => checkOpacity(div, true), "Found opaque state"); + }, + { iframe: true, remoteIframe: true, chrome: true } +); + +/** + * Test caching of the editable state. + */ +addAccessibleTask( + `
`, + async function (browser, docAcc) { + const div = findAccessibleChildByID(docAcc, "div"); + testStates(div, 0, EXT_STATE_EDITABLE, 0, 0); + // Ensure that a contentEditable descendant doesn't cause editable to be + // exposed on the document. + testStates(docAcc, STATE_READONLY, 0, 0, EXT_STATE_EDITABLE); + + info("Setting contentEditable on the body"); + let stateChanged = Promise.all([ + waitForStateChange(docAcc, EXT_STATE_EDITABLE, true, true), + waitForStateChange(docAcc, STATE_READONLY, false, false), + ]); + await invokeContentTask(browser, [], () => { + content.document.body.contentEditable = true; + }); + await stateChanged; + testStates(docAcc, 0, EXT_STATE_EDITABLE, STATE_READONLY, 0); + + info("Clearing contentEditable on the body"); + stateChanged = Promise.all([ + waitForStateChange(docAcc, EXT_STATE_EDITABLE, false, true), + waitForStateChange(docAcc, STATE_READONLY, true, false), + ]); + await invokeContentTask(browser, [], () => { + content.document.body.contentEditable = false; + }); + await stateChanged; + testStates(docAcc, STATE_READONLY, 0, 0, EXT_STATE_EDITABLE); + + info("Clearing contentEditable on div"); + stateChanged = waitForStateChange(div, EXT_STATE_EDITABLE, false, true); + await invokeContentTask(browser, [], () => { + content.document.getElementById("div").contentEditable = false; + }); + await stateChanged; + testStates(div, 0, 0, 0, EXT_STATE_EDITABLE); + + info("Setting contentEditable on div"); + stateChanged = waitForStateChange(div, EXT_STATE_EDITABLE, true, true); + await invokeContentTask(browser, [], () => { + content.document.getElementById("div").contentEditable = true; + }); + await stateChanged; + testStates(div, 0, EXT_STATE_EDITABLE, 0, 0); + + info("Setting designMode on document"); + stateChanged = Promise.all([ + waitForStateChange(docAcc, EXT_STATE_EDITABLE, true, true), + waitForStateChange(docAcc, STATE_READONLY, false, false), + ]); + await invokeContentTask(browser, [], () => { + content.document.designMode = "on"; + }); + await stateChanged; + testStates(docAcc, 0, EXT_STATE_EDITABLE, STATE_READONLY, 0); + + info("Clearing designMode on document"); + stateChanged = Promise.all([ + waitForStateChange(docAcc, EXT_STATE_EDITABLE, false, true), + waitForStateChange(docAcc, STATE_READONLY, true, false), + ]); + await invokeContentTask(browser, [], () => { + content.document.designMode = "off"; + }); + await stateChanged; + testStates(docAcc, STATE_READONLY, 0, 0, EXT_STATE_EDITABLE); + }, + { topLevel: true, iframe: true, remoteIframe: true, chrome: true } +); + +/** + * Test caching of the stale and busy states. + */ +addAccessibleTask( + ``, + async function (browser, docAcc) { + const iframe = findAccessibleChildByID(docAcc, "iframe"); + info("Setting iframe src"); + // This iframe won't finish loading. Thus, it will get the stale state and + // won't fire a document load complete event. We use the reorder event on + // the iframe to know when the document has been created. + let reordered = waitForEvent(EVENT_REORDER, iframe); + await invokeContentTask(browser, [], () => { + content.document.getElementById("iframe").src = + 'data:text/html,'; + }); + const iframeDoc = (await reordered).accessible.firstChild; + testStates(iframeDoc, STATE_BUSY, EXT_STATE_STALE, 0, 0); + + info("Finishing load of iframe doc"); + let loadCompleted = waitForEvent(EVENT_DOCUMENT_LOAD_COMPLETE, iframeDoc); + await fetch( + "https://example.com/a11y/accessible/tests/mochitest/events/slow_image.sjs?complete" + ); + await loadCompleted; + testStates(iframeDoc, 0, 0, STATE_BUSY, EXT_STATE_STALE); + }, + { topLevel: true, chrome: true } +); + +/** + * Test implicit selected state. + */ +addAccessibleTask( + ` +
+ + +
+
+
multiNoSel
+
+ `, + async function (browser, docAcc) { + const noSel = findAccessibleChildByID(docAcc, "noSel"); + testStates(noSel, 0, 0, STATE_FOCUSED | STATE_SELECTED, 0); + info("Focusing noSel"); + let focused = waitForEvent(EVENT_FOCUS, noSel); + noSel.takeFocus(); + await focused; + testStates(noSel, STATE_FOCUSED | STATE_SELECTED, 0, 0, 0); + + const selFalse = findAccessibleChildByID(docAcc, "selFalse"); + testStates(selFalse, 0, 0, STATE_FOCUSED | STATE_SELECTED, 0); + info("Focusing selFalse"); + focused = waitForEvent(EVENT_FOCUS, selFalse); + selFalse.takeFocus(); + await focused; + testStates(selFalse, STATE_FOCUSED, 0, STATE_SELECTED, 0); + + const multiNoSel = findAccessibleChildByID(docAcc, "multiNoSel"); + testStates(multiNoSel, 0, 0, STATE_FOCUSED | STATE_SELECTED, 0); + info("Focusing multiNoSel"); + focused = waitForEvent(EVENT_FOCUS, multiNoSel); + multiNoSel.takeFocus(); + await focused; + testStates(multiNoSel, STATE_FOCUSED, 0, STATE_SELECTED, 0); + }, + { topLevel: true, iframe: true, remoteIframe: true, chrome: true } +); + +/** + * Test invalid state determined via DOM. + */ +addAccessibleTask( + ``, + async function (browser, docAcc) { + const email = findAccessibleChildByID(docAcc, "email"); + info("Focusing email"); + let focused = waitForEvent(EVENT_FOCUS, email); + email.takeFocus(); + await focused; + info("Typing a"); + let invalidChanged = waitForStateChange(email, STATE_INVALID, true); + EventUtils.sendString("a"); + await invalidChanged; + testStates(email, STATE_INVALID); + info("Typing @b"); + invalidChanged = waitForStateChange(email, STATE_INVALID, false); + EventUtils.sendString("@b"); + await invalidChanged; + testStates(email, 0, 0, STATE_INVALID); + info("Typing backspace"); + invalidChanged = waitForStateChange(email, STATE_INVALID, true); + EventUtils.synthesizeKey("KEY_Backspace"); + await invalidChanged; + testStates(email, STATE_INVALID); + }, + { chrome: true, topLevel: true, remoteIframe: true } +); diff --git a/accessible/tests/browser/e10s/browser_caching_table.js b/accessible/tests/browser/e10s/browser_caching_table.js new file mode 100644 index 0000000000..fa978c08eb --- /dev/null +++ b/accessible/tests/browser/e10s/browser_caching_table.js @@ -0,0 +1,532 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/** + * Test tables for both local and remote Accessibles. There is more extensive + * coverage in ../../mochitest/table. These tests are primarily to ensure that + * the cache works as expected and that there is consistency between local and + * remote. + */ + +"use strict"; + +/* import-globals-from ../../mochitest/table.js */ +/* import-globals-from ../../mochitest/attributes.js */ +loadScripts( + { name: "table.js", dir: MOCHITESTS_DIR }, + { name: "attributes.js", dir: MOCHITESTS_DIR } +); + +/** + * Test table counts, indexes, extents and implicit headers. + */ +addAccessibleTask( + ` + + + + + + + + +
abcd
eifjgh
k
+ `, + async function (browser, docAcc) { + const table = findAccessibleChildByID(docAcc, "table", [ + nsIAccessibleTable, + ]); + is(table.rowCount, 3, "table rowCount correct"); + is(table.columnCount, 4, "table columnCount correct"); + testTableIndexes(table, [ + [0, 1, 1, 2], + [3, 4, 5, 6], + [3, 4, 7, -1], + ]); + const cells = {}; + for (const id of ["a", "bc", "d", "ei", "fj", "g", "h", "k"]) { + cells[id] = findAccessibleChildByID(docAcc, id, [nsIAccessibleTableCell]); + } + is(cells.a.rowExtent, 1, "a rowExtent correct"); + is(cells.a.columnExtent, 1, "a columnExtent correct"); + is(cells.bc.rowExtent, 1, "bc rowExtent correct"); + is(cells.bc.columnExtent, 2, "bc columnExtent correct"); + is(cells.ei.rowExtent, 2, "ei rowExtent correct"); + is(cells.fj.rowExtent, 2, "fj rowExtent correct"); + testHeaderCells([ + { + cell: cells.ei, + rowHeaderCells: [], + columnHeaderCells: [cells.a], + }, + { + cell: cells.g, + rowHeaderCells: [cells.ei], + columnHeaderCells: [cells.bc], + }, + { + cell: cells.k, + rowHeaderCells: [cells.ei], + columnHeaderCells: [cells.bc], + }, + ]); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +/** + * Test table explicit headers. + */ +addAccessibleTask( + ` + + + + +
ab
cd
ef
+ `, + async function (browser, docAcc) { + const cells = {}; + for (const id of ["a", "b", "c", "d", "e", "f"]) { + cells[id] = findAccessibleChildByID(docAcc, id, [nsIAccessibleTableCell]); + } + testHeaderCells([ + { + cell: cells.c, + rowHeaderCells: [cells.d], + columnHeaderCells: [cells.b], + }, + { + cell: cells.e, + rowHeaderCells: [cells.f], + columnHeaderCells: [cells.c], + }, + ]); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +/** + * Test that an inner table doesn't impact an outer table. + */ +addAccessibleTask( + ` + +
outerCell +
a
+
+ + `, + async function (browser, docAcc) { + const outerTable = findAccessibleChildByID(docAcc, "outerTable", [ + nsIAccessibleTable, + ]); + is(outerTable.rowCount, 1, "outerTable rowCount correct"); + is(outerTable.columnCount, 1, "outerTable columnCount correct"); + const outerCell = findAccessibleChildByID(docAcc, "outerCell"); + is( + outerTable.getCellAt(0, 0), + outerCell, + "outerTable returns correct cell" + ); + const innerTable = findAccessibleChildByID(docAcc, "innerTable", [ + nsIAccessibleTable, + ]); + is(innerTable.rowCount, 1, "innerTable rowCount correct"); + is(innerTable.columnCount, 1, "innerTable columnCount correct"); + const innerCell = findAccessibleChildByID(docAcc, "innerCell"); + is( + innerTable.getCellAt(0, 0), + innerCell, + "innerTable returns correct cell" + ); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +/** + * Test table caption and summary. + */ +addAccessibleTask( + ` + + + +
c1
a
+ + +
a
+ + + +
c3
a
+ `, + async function (browser, docAcc) { + const t1 = findAccessibleChildByID(docAcc, "t1", [nsIAccessibleTable]); + const c1 = findAccessibleChildByID(docAcc, "c1"); + is(t1.caption, c1, "t1 caption correct"); + ok(!t1.summary, "t1 no summary"); + const t2 = findAccessibleChildByID(docAcc, "t2", [nsIAccessibleTable]); + ok(!t2.caption, "t2 caption is null"); + is(t2.summary, "s2", "t2 summary correct"); + const t3 = findAccessibleChildByID(docAcc, "t3", [nsIAccessibleTable]); + const c3 = findAccessibleChildByID(docAcc, "c3"); + is(t3.caption, c3, "t3 caption correct"); + is(t3.summary, "s3", "t3 summary correct"); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +/** + * Test table layout guess. + */ +addAccessibleTask( + ` +
a
+
a
+
ab
+
+ `, + async function (browser, docAcc) { + const layout = findAccessibleChildByID(docAcc, "layout"); + testAttrs(layout, { "layout-guess": "true" }, true); + const data = findAccessibleChildByID(docAcc, "data"); + testAbsentAttrs(data, { "layout-guess": "true" }); + const mutate = findAccessibleChildByID(docAcc, "mutate"); + testAttrs(mutate, { "layout-guess": "true" }, true); + + info("mutate: Adding 5 rows"); + let reordered = waitForEvent(EVENT_REORDER, mutate); + await invokeContentTask(browser, [], () => { + const frag = content.document.createDocumentFragment(); + for (let r = 0; r < 6; ++r) { + const tr = content.document.createElement("tr"); + tr.innerHTML = "ab"; + frag.append(tr); + } + content.document.getElementById("mutate").tBodies[0].append(frag); + }); + await reordered; + testAbsentAttrs(mutate, { "layout-guess": "true" }); + + info("mutate: Removing 5 rows"); + reordered = waitForEvent(EVENT_REORDER, mutate); + await invokeContentTask(browser, [], () => { + // Pause refresh driver so all the children removals below will + // be collated into the same tick and only one 'reorder' event will + // be dispatched. + content.windowUtils.advanceTimeAndRefresh(100); + + let tBody = content.document.getElementById("mutate").tBodies[0]; + for (let r = 0; r < 6; ++r) { + tBody.lastChild.remove(); + } + + // Resume refresh driver + content.windowUtils.restoreNormalRefresh(); + }); + await reordered; + testAttrs(mutate, { "layout-guess": "true" }, true); + + info("mutate: Adding new table"); + let shown = waitForEvent(EVENT_SHOW, "newTable"); + await invokeContentTask(browser, [], () => { + content.document.getElementById( + "newTableContainer" + ).innerHTML = `
a
`; + }); + let newTable = (await shown).accessible; + testAbsentAttrs(newTable, { "layout-guess": "true" }); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +/** + * Test table layout guess with border styling changes. + */ +addAccessibleTask( + ` + +
ab
cd
cd
+ `, + async function (browser, docAcc) { + const layout = findAccessibleChildByID(docAcc, "layout"); + testAttrs(layout, { "layout-guess": "true" }, true); + info("changing border style on table cell"); + await invokeContentTask(browser, [], () => { + content.document.getElementById("cell").style.border = "1px solid black"; + content.document.body.offsetTop; // Flush layout. + }); + await untilCacheOk(() => { + // manually verify the attribute doesn't exist, since `testAbsentAttrs` + // has internal calls to ok() which fail if the cache hasn't yet updated + for (let prop of layout.attributes.enumerate()) { + if (prop.key == "layout-guess") { + return false; + } + } + return true; + }, "Table is a data table"); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +/** + * Test ARIA grid. + */ +addAccessibleTask( + ` +
+
+
a
b
+
+
+
c
d
+
+
+ `, + async function (browser, docAcc) { + const grid = findAccessibleChildByID(docAcc, "grid", [nsIAccessibleTable]); + is(grid.rowCount, 2, "grid rowCount correct"); + is(grid.columnCount, 2, "grid columnCount correct"); + testTableIndexes(grid, [ + [0, 1], + [2, 3], + ]); + const cells = {}; + for (const id of ["a", "b", "c", "d"]) { + cells[id] = findAccessibleChildByID(docAcc, id, [nsIAccessibleTableCell]); + } + is(cells.a.rowExtent, 1, "a rowExtent correct"); + is(cells.a.columnExtent, 1, "a columnExtent correct"); + testHeaderCells([ + { + cell: cells.c, + rowHeaderCells: [], + columnHeaderCells: [cells.a], + }, + { + cell: cells.d, + rowHeaderCells: [cells.c], + columnHeaderCells: [cells.b], + }, + ]); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +function setNodeHidden(browser, id, hidden) { + return invokeContentTask(browser, [id, hidden], (cId, cHidden) => { + content.document.getElementById(cId).hidden = cHidden; + }); +} + +/** + * Test that the table is updated correctly when it is mutated. + */ +addAccessibleTask( + ` + + + +
ab
+
+ `, + async function (browser, docAcc) { + const table = findAccessibleChildByID(docAcc, "table", [ + nsIAccessibleTable, + ]); + is(table.rowCount, 1, "table rowCount correct"); + is(table.columnCount, 2, "table columnCount correct"); + testTableIndexes(table, [[0, 1]]); + info("Showing r2"); + let reordered = waitForEvent(EVENT_REORDER, table); + await setNodeHidden(browser, "r2", false); + await reordered; + is(table.rowCount, 2, "table rowCount correct"); + testTableIndexes(table, [ + [0, 1], + [2, 3], + ]); + info("Hiding r2"); + reordered = waitForEvent(EVENT_REORDER, table); + await setNodeHidden(browser, "r2", true); + await reordered; + is(table.rowCount, 1, "table rowCount correct"); + testTableIndexes(table, [[0, 1]]); + info("Hiding b"); + reordered = waitForEvent(EVENT_REORDER, "r1"); + await setNodeHidden(browser, "b", true); + await reordered; + is(table.columnCount, 1, "table columnCount correct"); + testTableIndexes(table, [[0]]); + info("Showing b"); + reordered = waitForEvent(EVENT_REORDER, "r1"); + await setNodeHidden(browser, "b", false); + await reordered; + is(table.columnCount, 2, "table columnCount correct"); + info("Moving b out of table using aria-owns"); + reordered = waitForEvent(EVENT_REORDER, "r1"); + await invokeContentTask(browser, [], () => { + content.document.getElementById("owner").setAttribute("aria-owns", "b"); + }); + await reordered; + is(table.columnCount, 1, "table columnCount correct"); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +/** + * Test the handling of ARIA tables with display: contents. + */ +addAccessibleTask( + ` +
+
a
+
+ `, + async function (browser, docAcc) { + const table = findAccessibleChildByID(docAcc, "table", [ + nsIAccessibleTable, + ]); + is(table.rowCount, 1, "table rowCount correct"); + is(table.columnCount, 1, "table columnCount correct"); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +/** + * Test a broken ARIA table with an invalid cell. + */ +addAccessibleTask( + ` +
+
+
+
a
+
+
+
+ `, + async function (browser, docAcc) { + const table = findAccessibleChildByID(docAcc, "table", [ + nsIAccessibleTable, + ]); + is(table.rowCount, 0, "table rowCount correct"); + is(table.columnCount, 0, "table columnCount correct"); + const cell = findAccessibleChildByID(docAcc, "cell"); + let queryOk = false; + try { + cell.QueryInterface(nsIAccessibleTableCell); + queryOk = true; + } catch (e) {} + ok(!queryOk, "Got nsIAccessibleTableCell on an invalid cell"); + }, + { + chrome: true, + topLevel: true, + iframe: true, + remoteIframe: true, + } +); + +/** + * Test that building the cache for a malformed table with an iframe inside a + * row doesn't crash (bug 1800780). + */ +addAccessibleTask( + `
`, + async function (browser, docAcc) { + let reordered = waitForEvent(EVENT_REORDER, "tr"); + await invokeContentTask(browser, [], () => { + const iframe = content.document.createElement("iframe"); + content.document.getElementById("tr").append(iframe); + }); + await reordered; + }, + { topLevel: true } +); + +/** + * Verify that we don't crash for authoring error like . + */ +addAccessibleTask( + `
`, + async function (browser, docAcc) { + const table = findAccessibleChildByID(docAcc, "table"); + ok(table, "Retrieved table Accessible"); + }, + { chrome: true, topLevel: true } +); + +/** + * Verify that we don't crash for authoring error like . + */ +addAccessibleTask( + ` +
+ + +
a
b
+ `, + async function (browser, docAcc) { + const table = findAccessibleChildByID(docAcc, "table", [ + nsIAccessibleTable, + ]); + is(table.rowCount, 1, "table rowCount correct"); + is(table.columnCount, 1, "table columnCount correct"); + const b = findAccessibleChildByID(docAcc, "b"); + let queryOk = false; + try { + b.QueryInterface(nsIAccessibleTableCell); + queryOk = true; + } catch (e) {} + ok(!queryOk, "No nsIAccessibleTableCell on invalid cell b"); + } +); diff --git a/accessible/tests/browser/e10s/browser_caching_text_bounds.js b/accessible/tests/browser/e10s/browser_caching_text_bounds.js new file mode 100644 index 0000000000..2d2a857c8f --- /dev/null +++ b/accessible/tests/browser/e10s/browser_caching_text_bounds.js @@ -0,0 +1,696 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; +requestLongerTimeout(3); + +/* import-globals-from ../../mochitest/layout.js */ +loadScripts({ name: "layout.js", dir: MOCHITESTS_DIR }); + +// Note that testTextNode, testChar and testTextRange currently don't handle +// white space in the code that doesn't get rendered on screen. To work around +// this, ensure that containers you want to test are all on a single line in the +// test snippet. + +async function testTextNode(accDoc, browser, id) { + await testTextRange(accDoc, browser, id, 0, -1); +} + +async function testChar(accDoc, browser, id, idx) { + await testTextRange(accDoc, browser, id, idx, idx + 1); +} + +async function testTextRange(accDoc, browser, id, start, end) { + const r = await invokeContentTask( + browser, + [id, start, end], + (_id, _start, _end) => { + const htNode = content.document.getElementById(_id); + let [eX, eY, eW, eH] = [ + Number.MAX_SAFE_INTEGER, + Number.MAX_SAFE_INTEGER, + 0, + 0, + ]; + let traversed = 0; + let localStart = _start; + let endTraversal = false; + for (let element of htNode.childNodes) { + // ignore whitespace, but not embedded elements + let isEmbeddedElement = false; + if (element.length == undefined) { + let potentialTextContainer = element; + while ( + potentialTextContainer && + potentialTextContainer.length == undefined + ) { + potentialTextContainer = element.firstChild; + } + if (potentialTextContainer && potentialTextContainer.length) { + // If we can reach some text from this container, use that as part + // of our range. This is important when testing with intervening inline + // elements. ie. 
ab%0acd
+            element = potentialTextContainer;
+          } else if (element.firstChild) {
+            isEmbeddedElement = true;
+          } else {
+            continue;
+          }
+        }
+        if (element.length + traversed < _start) {
+          // If our start index is not within this
+          // node, keep looking.
+          traversed += element.length;
+          localStart -= element.length;
+          continue;
+        }
+
+        let rect;
+        if (isEmbeddedElement) {
+          rect = element.getBoundingClientRect();
+        } else {
+          const range = content.document.createRange();
+          range.setStart(element, localStart);
+
+          if (_end != -1 && _end - traversed <= element.length) {
+            // If the current node contains
+            // our end index, stop here.
+            endTraversal = true;
+            range.setEnd(element, _end - traversed);
+          } else {
+            range.setEnd(element, element.length);
+          }
+
+          rect = range.getBoundingClientRect();
+        }
+
+        const oldX = eX == Number.MAX_SAFE_INTEGER ? 0 : eX;
+        const oldY = eY == Number.MAX_SAFE_INTEGER ? 0 : eY;
+        eX = Math.min(eX, rect.x);
+        eY = Math.min(eY, rect.y);
+        eW = Math.abs(Math.max(oldX + eW, rect.x + rect.width) - eX);
+        eH = Math.abs(Math.max(oldY + eH, rect.y + rect.height) - eY);
+
+        if (endTraversal) {
+          break;
+        }
+        localStart = 0;
+        traversed += element.length;
+      }
+      return [Math.round(eX), Math.round(eY), Math.round(eW), Math.round(eH)];
+    }
+  );
+  let hyperTextNode = findAccessibleChildByID(accDoc, id);
+
+  // Add in the doc's screen coords because getBoundingClientRect
+  // is relative to the document, not the screen. This assumes the doc's
+  // screen coords are correct. We use getBoundsInCSSPixels to avoid factoring
+  // in the DPR ourselves.
+  let x = {};
+  let y = {};
+  let w = {};
+  let h = {};
+  accDoc.getBoundsInCSSPixels(x, y, w, h);
+  r[0] += x.value;
+  r[1] += y.value;
+  if (end != -1 && end - start == 1) {
+    // If we're only testing a character, use this function because it calls
+    // CharBounds() directly instead of TextBounds().
+    testTextPos(hyperTextNode, start, [r[0], r[1]], COORDTYPE_SCREEN_RELATIVE);
+  } else {
+    testTextBounds(hyperTextNode, start, end, r, COORDTYPE_SCREEN_RELATIVE);
+  }
+}
+
+/**
+ * Test the text range boundary for simple LtR text
+ */
+addAccessibleTask(
+  `
+  
Tilimilitryamdiya

+  
ل

+  
Привіт Світ

+  
a%0abcdef

+  `,
+  async function (browser, accDoc) {
+    info("Testing simple LtR text");
+    await testTextNode(accDoc, browser, "p1");
+    await testTextNode(accDoc, browser, "p2");
+    await testTextNode(accDoc, browser, "p3");
+    await testTextNode(accDoc, browser, "p4");
+  },
+  {
+    iframe: true,
+  }
+);
+
+/**
+ * Test the partial text range boundary for LtR text
+ */
+addAccessibleTask(
+  `
+  
Tilimilitryamdiya

+  
Привіт Світ

+  `,
+  async function (browser, accDoc) {
+    info("Testing partial ranges in LtR text");
+    await testTextRange(accDoc, browser, "p1", 0, 4);
+    await testTextRange(accDoc, browser, "p1", 2, 8);
+    await testTextRange(accDoc, browser, "p1", 12, 17);
+    await testTextRange(accDoc, browser, "p2", 0, 4);
+    await testTextRange(accDoc, browser, "p2", 2, 8);
+    await testTextRange(accDoc, browser, "p2", 6, 11);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test the text boundary for multiline LtR text
+ */
+addAccessibleTask(
+  `
+  
Привіт Світ
Привіт Світ

+  
Привіт Світ
 Я ще трохи тексту в другому рядку

+  
hello world I'm on line one
 and I'm a separate line two with slightly more text

+  
hello world
hello world

+  `,
+  async function (browser, accDoc) {
+    info("Testing multiline LtR text");
+    await testTextNode(accDoc, browser, "p4");
+    await testTextNode(accDoc, browser, "p5");
+    // await testTextNode(accDoc, browser, "p6"); // w/o cache, fails width (a 259, e 250), w/ cache wrong w, h in iframe (line wrapping)
+    await testTextNode(accDoc, browser, "p7");
+  },
+  {
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test the text boundary for simple RtL text
+ */
+addAccessibleTask(
+  `
+  
Tilimilitryamdiya

+  
ل

+  
لل لللل لل

+  
a%0abcdef

+  `,
+  async function (browser, accDoc) {
+    info("Testing simple RtL text");
+    await testTextNode(accDoc, browser, "p1");
+    await testTextNode(accDoc, browser, "p2");
+    await testTextNode(accDoc, browser, "p3");
+    await testTextNode(accDoc, browser, "p4");
+  },
+  {
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test the text boundary for multiline RtL text
+ */
+addAccessibleTask(
+  `
+  
لل لللل لل
لل لللل لل

+  
لل لللل لل
 لل لل  لل لل ل لل لل لل

+  
hello world I'm on line one
 and I'm a separate line two with slightly more text

+  
hello world
hello world

+  `,
+  async function (browser, accDoc) {
+    info("Testing multiline RtL text");
+    await testTextNode(accDoc, browser, "p4");
+    //await testTextNode(accDoc, browser, "p5"); // w/ cache fails x, w - off by one char
+    // await testTextNode(accDoc, browser, "p6"); // w/o cache, fails width (a 259, e 250), w/ cache fails w, h in iframe (line wrapping)
+    await testTextNode(accDoc, browser, "p7");
+  },
+  {
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test the partial text range boundary for RtL text
+ */
+addAccessibleTask(
+  `
+  
Tilimilitryamdiya

+  
لل لللل لل

+  `,
+  async function (browser, accDoc) {
+    info("Testing partial ranges in RtL text");
+    await testTextRange(accDoc, browser, "p1", 0, 4);
+    await testTextRange(accDoc, browser, "p1", 2, 8);
+    await testTextRange(accDoc, browser, "p1", 12, 17);
+    await testTextRange(accDoc, browser, "p2", 0, 4);
+    await testTextRange(accDoc, browser, "p2", 2, 8);
+    await testTextRange(accDoc, browser, "p2", 6, 10);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test simple vertical text in rl and lr layouts
+ */
+addAccessibleTask(
+  `
+  

+    
你好世界

+    
hello world

+    

+    
こんにちは世界

+  

+  

+    
你好世界

+    
hello world

+    

+    
こんにちは世界

+  

+  `,
+  async function (browser, accDoc) {
+    info("Testing vertical-rl");
+    await testTextNode(accDoc, browser, "p1");
+    await testTextNode(accDoc, browser, "p2");
+    await testTextNode(accDoc, browser, "p3");
+    info("Testing vertical-lr");
+    await testTextNode(accDoc, browser, "p4");
+    await testTextNode(accDoc, browser, "p5");
+    await testTextNode(accDoc, browser, "p6");
+  },
+  {
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test multiline vertical-rl text
+ */
+addAccessibleTask(
+  `
+  
你好世界
你好世界

+  
hello world
hello world

+  

+  
你好世界
 你好世界 你好世界

+  
hello world
 hello world hello world

+  `,
+  async function (browser, accDoc) {
+    info("Testing vertical-rl multiline");
+    await testTextNode(accDoc, browser, "p1");
+    await testTextNode(accDoc, browser, "p2");
+    await testTextNode(accDoc, browser, "p3");
+    // await testTextNode(accDoc, browser, "p4"); // off by 4 with caching, iframe
+  },
+  {
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test text with embedded chars
+ */
+addAccessibleTask(
+  `
hello world

+   
hello
world

+   
hello world

+   
hello world

+   
oh
hello world
`,
+  async function (browser, accDoc) {
+    info("Testing embedded chars");
+    await testTextNode(accDoc, browser, "p1");
+    await testTextNode(accDoc, browser, "p2");
+    await testTextNode(accDoc, browser, "d3");
+    await testTextNode(accDoc, browser, "d4");
+    await testTextNode(accDoc, browser, "d5");
+  },
+  {
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test bounds after text mutations.
+ */
+addAccessibleTask(
+  `
a
`,
+  async function (browser, docAcc) {
+    await testTextNode(docAcc, browser, "p");
+    const p = findAccessibleChildByID(docAcc, "p");
+    info("Appending a character to text leaf");
+    let textInserted = waitForEvent(EVENT_TEXT_INSERTED, p);
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("p").firstChild.data = "ab";
+    });
+    await textInserted;
+    await testTextNode(docAcc, browser, "p");
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test character bounds on the insertion point at the end of a text box.
+ */
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    const input = findAccessibleChildByID(docAcc, "input");
+    testTextPos(input, 1, [0, 0], COORDTYPE_SCREEN_RELATIVE);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test character bounds after non-br line break.
+ */
+addAccessibleTask(
+  `
+  
+  
XX
+XXX
`,
+  async function (browser, docAcc) {
+    await testChar(docAcc, browser, "t", 3);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test character bounds in a pre with padding.
+ */
+addAccessibleTask(
+  `
+  
+  
XX
+XXX
`,
+  async function (browser, docAcc) {
+    await testTextNode(docAcc, browser, "t");
+    await testChar(docAcc, browser, "t", 3);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test text bounds with an invalid end offset.
+ */
+addAccessibleTask(
+  `
a
`,
+  async function (browser, docAcc) {
+    const p = findAccessibleChildByID(docAcc, "p");
+    testTextBounds(p, 0, 2, [0, 0, 0, 0], COORDTYPE_SCREEN_RELATIVE);
+  },
+  { chrome: true, topLevel: !true }
+);
+
+/**
+ * Test character bounds in an intervening inline element with non-br line breaks
+ */
+addAccessibleTask(
+  `
+  
+  
XX
+XXX
+XX
+X
`,
+  async function (browser, docAcc) {
+    await testChar(docAcc, browser, "t", 0);
+    await testChar(docAcc, browser, "t", 3);
+    await testChar(docAcc, browser, "t", 7);
+    await testChar(docAcc, browser, "t", 10);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test character bounds in an intervening inline element with margins
+ * and with non-br line breaks
+ */
+addAccessibleTask(
+  `
+  
+  
hello
XX
+XXX
+XX
+X
`,
+  async function (browser, docAcc) {
+    await testChar(docAcc, browser, "t", 0);
+    await testChar(docAcc, browser, "t", 3);
+    await testChar(docAcc, browser, "t", 7);
+    await testChar(docAcc, browser, "t", 10);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+  }
+);
+
+/**
+ * Test text bounds in a textarea after scrolling.
+ */
+addAccessibleTask(
+  `
+
+  `,
+  async function (browser, docAcc) {
+    // We can't use testChar because Range.getBoundingClientRect isn't supported
+    // inside textareas.
+    const textarea = findAccessibleChildByID(docAcc, "textarea");
+    textarea.QueryInterface(nsIAccessibleText);
+    const oldY = {};
+    textarea.getCharacterExtents(
+      4,
+      {},
+      oldY,
+      {},
+      {},
+      COORDTYPE_SCREEN_RELATIVE
+    );
+    info("Moving textarea caret to c");
+    await invokeContentTask(browser, [], () => {
+      const textareaDom = content.document.getElementById("textarea");
+      textareaDom.focus();
+      textareaDom.selectionStart = 4;
+    });
+    await waitForContentPaint(browser);
+    const newY = {};
+    textarea.getCharacterExtents(
+      4,
+      {},
+      newY,
+      {},
+      {},
+      COORDTYPE_SCREEN_RELATIVE
+    );
+    ok(newY.value < oldY.value, "y coordinate smaller after scrolling down");
+  },
+  { chrome: true, topLevel: true, iframe: !true }
+);
+
+/**
+ * Test magic offsets with GetCharacter/RangeExtents.
+ */
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    const input = findAccessibleChildByID(docAcc, "input", [nsIAccessibleText]);
+    info("Setting caret and focusing input");
+    let caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, input);
+    await invokeContentTask(browser, [], () => {
+      const inputDom = content.document.getElementById("input");
+      inputDom.selectionStart = inputDom.selectionEnd = 1;
+      inputDom.focus();
+    });
+    await caretMoved;
+    is(input.caretOffset, 1, "input caretOffset is 1");
+    let expectedX = {};
+    let expectedY = {};
+    let expectedW = {};
+    let expectedH = {};
+    let magicX = {};
+    let magicY = {};
+    let magicW = {};
+    let magicH = {};
+    input.getCharacterExtents(
+      1,
+      expectedX,
+      expectedY,
+      expectedW,
+      expectedH,
+      COORDTYPE_SCREEN_RELATIVE
+    );
+    input.getCharacterExtents(
+      nsIAccessibleText.TEXT_OFFSET_CARET,
+      magicX,
+      magicY,
+      magicW,
+      magicH,
+      COORDTYPE_SCREEN_RELATIVE
+    );
+    Assert.deepEqual(
+      [magicX.value, magicY.value, magicW.value, magicH.value],
+      [expectedX.value, expectedY.value, expectedW.value, expectedH.value],
+      "GetCharacterExtents correct with TEXT_OFFSET_CARET"
+    );
+    input.getRangeExtents(
+      1,
+      3,
+      expectedX,
+      expectedY,
+      expectedW,
+      expectedH,
+      COORDTYPE_SCREEN_RELATIVE
+    );
+    input.getRangeExtents(
+      nsIAccessibleText.TEXT_OFFSET_CARET,
+      nsIAccessibleText.TEXT_OFFSET_END_OF_TEXT,
+      magicX,
+      magicY,
+      magicW,
+      magicH,
+      COORDTYPE_SCREEN_RELATIVE
+    );
+    Assert.deepEqual(
+      [magicX.value, magicY.value, magicW.value, magicH.value],
+      [expectedX.value, expectedY.value, expectedW.value, expectedH.value],
+      "GetRangeExtents correct with TEXT_OFFSET_CARET/END_OF_TEXT"
+    );
+  },
+  { chrome: true, topLevel: true, remoteIframe: !true }
+);
+
+/**
+ * Test wrapped text and pre-formatted text beginning with an empty line.
+ */
+addAccessibleTask(
+  `
+
+
ab cd

+

+foo

+  `,
+  async function (browser, docAcc) {
+    await testChar(docAcc, browser, "wrappedText", 0);
+    await testChar(docAcc, browser, "wrappedText", 1);
+    await testChar(docAcc, browser, "wrappedText", 2);
+    await testChar(docAcc, browser, "wrappedText", 3);
+    await testChar(docAcc, browser, "wrappedText", 4);
+
+    // We can't use testChar for emptyFirstLine because it doesn't handle white
+    // space properly. Instead, verify that the first character is at the top
+    // left of the text leaf.
+    const emptyFirstLine = findAccessibleChildByID(docAcc, "emptyFirstLine", [
+      nsIAccessibleText,
+    ]);
+    const emptyFirstLineLeaf = emptyFirstLine.firstChild;
+    const leafX = {};
+    const leafY = {};
+    emptyFirstLineLeaf.getBounds(leafX, leafY, {}, {});
+    testTextPos(
+      emptyFirstLine,
+      0,
+      [leafX.value, leafY.value],
+      COORDTYPE_SCREEN_RELATIVE
+    );
+  },
+  { chrome: true, topLevel: true, remoteIframe: !true }
+);
+
+/**
+ * Test character bounds in an intervening inline element with non-br line breaks
+ */
+addAccessibleTask(
+  `
+  
+  
XX
+XXX
+XX
+X
`,
+  async function (browser, docAcc) {
+    await testChar(docAcc, browser, "t", 0);
+    await testChar(docAcc, browser, "t", 3);
+    await testChar(docAcc, browser, "t", 7);
+    await testChar(docAcc, browser, "t", 10);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+  }
+);
diff --git a/accessible/tests/browser/e10s/browser_caching_uniqueid.js b/accessible/tests/browser/e10s/browser_caching_uniqueid.js
new file mode 100644
index 0000000000..92eb2fe998
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_caching_uniqueid.js
@@ -0,0 +1,30 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test UniqueID property.
+ */
+addAccessibleTask(
+  '
',
+  async function (browser, accDoc) {
+    const div = findAccessibleChildByID(accDoc, "div");
+    const accUniqueID = await invokeContentTask(browser, [], () => {
+      const accService = Cc["@mozilla.org/accessibilityService;1"].getService(
+        Ci.nsIAccessibilityService
+      );
+
+      return accService.getAccessibleFor(content.document.getElementById("div"))
+        .uniqueID;
+    });
+
+    is(
+      accUniqueID,
+      div.uniqueID,
+      "Both proxy and the accessible return correct unique ID."
+    );
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_caching_value.js b/accessible/tests/browser/e10s/browser_caching_value.js
new file mode 100644
index 0000000000..0e3cda93af
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_caching_value.js
@@ -0,0 +1,415 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/states.js */
+/* import-globals-from ../../mochitest/value.js */
+loadScripts(
+  { name: "states.js", dir: MOCHITESTS_DIR },
+  { name: "value.js", dir: MOCHITESTS_DIR }
+);
+
+/**
+ * Test data has the format of:
+ * {
+ *   desc      {String}            description for better logging
+ *   id        {String}            given accessible DOMNode ID
+ *   expected  {String}            expected value for a given accessible
+ *   action    {?AsyncFunction}    an optional action that awaits a value change
+ *   attrs     {?Array}            an optional list of attributes to update
+ *   waitFor   {?Number}           an optional value change event to wait for
+ * }
+ */
+const valueTests = [
+  {
+    desc: "Initially value is set to 1st element of select",
+    id: "select",
+    expected: "1st",
+  },
+  {
+    desc: "Value should update to 3rd when 3 is pressed",
+    id: "select",
+    async action(browser) {
+      await invokeFocus(browser, "select");
+      await invokeContentTask(browser, [], () => {
+        const { ContentTaskUtils } = ChromeUtils.importESModule(
+          "resource://testing-common/ContentTaskUtils.sys.mjs"
+        );
+        const EventUtils = ContentTaskUtils.getEventUtils(content);
+        EventUtils.synthesizeKey("3", {}, content);
+      });
+    },
+    waitFor: EVENT_TEXT_VALUE_CHANGE,
+    expected: "3rd",
+  },
+  {
+    desc: "Initially value is set to @aria-valuenow for slider",
+    id: "slider",
+    expected: ["5", 5, 0, 7, 0],
+  },
+  {
+    desc: "Value should change when currentValue is called",
+    id: "slider",
+    async action(browser, acc) {
+      acc.QueryInterface(nsIAccessibleValue);
+      acc.currentValue = 4;
+    },
+    waitFor: EVENT_VALUE_CHANGE,
+    expected: ["4", 4, 0, 7, 0],
+  },
+  {
+    desc: "Value should change when @aria-valuenow is updated",
+    id: "slider",
+    attrs: [
+      {
+        attr: "aria-valuenow",
+        value: "6",
+      },
+    ],
+    waitFor: EVENT_VALUE_CHANGE,
+    expected: ["6", 6, 0, 7, 0],
+  },
+  {
+    desc: "Value should change when @aria-valuetext is set",
+    id: "slider",
+    attrs: [
+      {
+        attr: "aria-valuetext",
+        value: "plain",
+      },
+    ],
+    waitFor: EVENT_TEXT_VALUE_CHANGE,
+    expected: ["plain", 6, 0, 7, 0],
+  },
+  {
+    desc: "Value should change when @aria-valuetext is updated",
+    id: "slider",
+    attrs: [
+      {
+        attr: "aria-valuetext",
+        value: "hey!",
+      },
+    ],
+    waitFor: EVENT_TEXT_VALUE_CHANGE,
+    expected: ["hey!", 6, 0, 7, 0],
+  },
+  {
+    desc: "Value should change to @aria-valuetext when @aria-valuenow is removed",
+    id: "slider",
+    attrs: [
+      {
+        attr: "aria-valuenow",
+      },
+    ],
+    expected: ["hey!", 3.5, 0, 7, 0],
+  },
+  {
+    desc: "Initially value is not set for combobox",
+    id: "combobox",
+    expected: "",
+  },
+  {
+    desc: "Value should change when @value attribute is updated",
+    id: "combobox",
+    attrs: [
+      {
+        attr: "value",
+        value: "hello",
+      },
+    ],
+    waitFor: EVENT_TEXT_VALUE_CHANGE,
+    expected: "hello",
+  },
+  {
+    desc: "Initially value corresponds to @value attribute for progress",
+    id: "progress",
+    expected: "22%",
+  },
+  {
+    desc: "Value should change when @value attribute is updated",
+    id: "progress",
+    attrs: [
+      {
+        attr: "value",
+        value: "50",
+      },
+    ],
+    waitFor: EVENT_VALUE_CHANGE,
+    expected: "50%",
+  },
+  {
+    desc: "Setting currentValue on a progress accessible should fail",
+    id: "progress",
+    async action(browser, acc) {
+      acc.QueryInterface(nsIAccessibleValue);
+      try {
+        acc.currentValue = 25;
+        ok(false, "Setting currValue on progress element should fail");
+      } catch (e) {}
+    },
+    expected: "50%",
+  },
+  {
+    desc: "Initially value corresponds to @value attribute for range",
+    id: "range",
+    expected: "6",
+  },
+  {
+    desc: "Value should change when slider is moved",
+    id: "range",
+    async action(browser) {
+      await invokeFocus(browser, "range");
+      await invokeContentTask(browser, [], () => {
+        const { ContentTaskUtils } = ChromeUtils.importESModule(
+          "resource://testing-common/ContentTaskUtils.sys.mjs"
+        );
+        const EventUtils = ContentTaskUtils.getEventUtils(content);
+        EventUtils.synthesizeKey("VK_LEFT", {}, content);
+      });
+    },
+    waitFor: EVENT_VALUE_CHANGE,
+    expected: "5",
+  },
+  {
+    desc: "Value should change when currentValue is called",
+    id: "range",
+    async action(browser, acc) {
+      acc.QueryInterface(nsIAccessibleValue);
+      acc.currentValue = 4;
+    },
+    waitFor: EVENT_VALUE_CHANGE,
+    expected: "4",
+  },
+  {
+    desc: "Initially textbox value is text subtree",
+    id: "textbox",
+    expected: "Some rich text",
+  },
+  {
+    desc: "Textbox value changes when subtree changes",
+    id: "textbox",
+    async action(browser) {
+      await invokeContentTask(browser, [], () => {
+        let boldText = content.document.createElement("strong");
+        boldText.textContent = " bold";
+        content.document.getElementById("textbox").appendChild(boldText);
+      });
+    },
+    waitFor: EVENT_TEXT_VALUE_CHANGE,
+    expected: "Some rich text bold",
+  },
+];
+
+/**
+ * Test caching of accessible object values
+ */
+addAccessibleTask(
+  `
+  
slider

+  
+  
+  
+  
+  
Some rich text
`,
+  async function (browser, accDoc) {
+    for (let { desc, id, action, attrs, expected, waitFor } of valueTests) {
+      info(desc);
+      let acc = findAccessibleChildByID(accDoc, id);
+      let onUpdate;
+
+      if (waitFor) {
+        onUpdate = waitForEvent(waitFor, id);
+      }
+
+      if (action) {
+        await action(browser, acc);
+      } else if (attrs) {
+        for (let { attr, value } of attrs) {
+          await invokeSetAttribute(browser, id, attr, value);
+        }
+      }
+
+      await onUpdate;
+      if (Array.isArray(expected)) {
+        acc.QueryInterface(nsIAccessibleValue);
+        testValue(acc, ...expected);
+      } else {
+        is(acc.value, expected, `Correct value for ${prettyName(acc)}`);
+      }
+    }
+  },
+  { iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test caching of link URL values.
+ */
+addAccessibleTask(
+  `Test`,
+  async function (browser, docAcc) {
+    const link = findAccessibleChildByID(docAcc, "link");
+    is(link.value, "https://example.com/", "link initial value correct");
+    const textLeaf = link.firstChild;
+    is(textLeaf.value, "https://example.com/", "link initial value correct");
+
+    info("Changing link href");
+    await invokeSetAttribute(browser, "link", "href", "https://example.net/");
+    await untilCacheIs(
+      () => link.value,
+      "https://example.net/",
+      "link value correct after change"
+    );
+
+    info("Removing link href");
+    await invokeSetAttribute(browser, "link", "href");
+    await untilCacheIs(() => link.value, "", "link value empty after removal");
+
+    info("Setting link href");
+    await invokeSetAttribute(browser, "link", "href", "https://example.com/");
+    await untilCacheIs(
+      () => link.value,
+      "https://example.com/",
+      "link value correct after change"
+    );
+  },
+  { chrome: true, topLevel: true, iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test caching of active state for select options - see bug 1788143.
+ */
+addAccessibleTask(
+  `
+  `,
+  async function (browser, docAcc) {
+    const select = findAccessibleChildByID(docAcc, "select");
+    is(select.value, "First", "Select initial value correct");
+
+    // Focus the combo box.
+    await invokeFocus(browser, "select");
+
+    // Select the second option (drop-down collapsed).
+    let p = waitForEvents({
+      expected: [
+        [EVENT_SELECTION, "second_option"],
+        [EVENT_TEXT_VALUE_CHANGE, "select"],
+      ],
+      unexpected: [
+        stateChangeEventArgs("second_option", EXT_STATE_ACTIVE, true, true),
+        stateChangeEventArgs("first_option", EXT_STATE_ACTIVE, false, true),
+      ],
+    });
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("select").selectedIndex = 1;
+    });
+    await p;
+
+    is(select.value, "Second", "Select value correct after changing option");
+
+    // Expand the combobox dropdown.
+    p = waitForEvent(EVENT_STATE_CHANGE, "ContentSelectDropdown");
+    EventUtils.synthesizeKey("VK_SPACE");
+    await p;
+
+    p = waitForEvents({
+      expected: [
+        [EVENT_SELECTION, "first_option"],
+        [EVENT_TEXT_VALUE_CHANGE, "select"],
+        [EVENT_HIDE, "ContentSelectDropdown"],
+      ],
+      unexpected: [
+        stateChangeEventArgs("first_option", EXT_STATE_ACTIVE, true, true),
+        stateChangeEventArgs("second_option", EXT_STATE_ACTIVE, false, true),
+      ],
+    });
+
+    // Press the up arrow to select the first option (drop-down expanded).
+    // Then, press Enter to confirm the selection and close the dropdown.
+    // We do both of these together to unify testing across platforms, since
+    // events are not entirely consistent on Windows vs. Linux + macOS.
+    EventUtils.synthesizeKey("VK_UP");
+    EventUtils.synthesizeKey("VK_RETURN");
+    await p;
+
+    is(
+      select.value,
+      "First",
+      "Select value correct after changing option back"
+    );
+  },
+  { chrome: true, topLevel: true, iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test combobox values for non-editable comboboxes.
+ */
+addAccessibleTask(
+  `
+  
value

+  

+    

+      
value

+    

+  

+  

+    
value

+  

+  
foo
+    

+      
bar

+    

+  

+
+  
+  testing
+
+  

+    

+      
value

+    

+  

+`,
+  async function (browser, docAcc) {
+    const comboDiv1 = findAccessibleChildByID(docAcc, "combo-div-1");
+    const comboDiv2 = findAccessibleChildByID(docAcc, "combo-div-2");
+    const comboDiv3 = findAccessibleChildByID(docAcc, "combo-div-3");
+    const comboDiv4 = findAccessibleChildByID(docAcc, "combo-div-4");
+    const comboInput1 = findAccessibleChildByID(docAcc, "combo-input-1");
+    const comboInput2 = findAccessibleChildByID(docAcc, "combo-input-2");
+    const comboDivSelected = findAccessibleChildByID(
+      docAcc,
+      "combo-div-selected"
+    );
+
+    // Text as a descendant of the combobox: included in the value.
+    is(comboDiv1.value, "value", "Combobox value correct");
+
+    // Text as the descendant of a listbox: excluded from the value.
+    is(comboDiv2.value, "", "Combobox value correct");
+
+    // Text as the descendant of some other role that includes text in name computation.
+    // Here, the group role contains the text node with "value" in it.
+    is(comboDiv3.value, "value", "Combobox value correct");
+
+    // Some descendant text included, but text descendant of a listbox excluded.
+    is(comboDiv4.value, "foo", "Combobox value correct");
+
+    // Combobox inputs with explicit value report that value.
+    is(comboInput1.value, "value", "Combobox value correct");
+    is(comboInput2.value, "value", "Combobox value correct");
+
+    // Combobox role with aria-selected reports correct value.
+    is(comboDivSelected.value, "value", "Combobox value correct");
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_events_announcement.js b/accessible/tests/browser/e10s/browser_events_announcement.js
new file mode 100644
index 0000000000..046a7706e3
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_events_announcement.js
@@ -0,0 +1,30 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+addAccessibleTask(
+  `
abc
`,
+  async function (browser, accDoc) {
+    let acc = findAccessibleChildByID(accDoc, "p");
+    let onAnnounce = waitForEvent(EVENT_ANNOUNCEMENT, acc);
+    acc.announce("please", nsIAccessibleAnnouncementEvent.POLITE);
+    let evt = await onAnnounce;
+    evt.QueryInterface(nsIAccessibleAnnouncementEvent);
+    is(evt.announcement, "please", "announcement matches.");
+    is(evt.priority, nsIAccessibleAnnouncementEvent.POLITE, "priority matches");
+
+    onAnnounce = waitForEvent(EVENT_ANNOUNCEMENT, acc);
+    acc.announce("do it", nsIAccessibleAnnouncementEvent.ASSERTIVE);
+    evt = await onAnnounce;
+    evt.QueryInterface(nsIAccessibleAnnouncementEvent);
+    is(evt.announcement, "do it", "announcement matches.");
+    is(
+      evt.priority,
+      nsIAccessibleAnnouncementEvent.ASSERTIVE,
+      "priority matches"
+    );
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_events_caretmove.js b/accessible/tests/browser/e10s/browser_events_caretmove.js
new file mode 100644
index 0000000000..dff6586bf3
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_events_caretmove.js
@@ -0,0 +1,22 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test caret move event and its interface:
+ *   - caretOffset
+ */
+addAccessibleTask(
+  '',
+  async function (browser) {
+    let onCaretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, "textbox");
+    await invokeFocus(browser, "textbox");
+    let event = await onCaretMoved;
+
+    let caretMovedEvent = event.QueryInterface(nsIAccessibleCaretMoveEvent);
+    is(caretMovedEvent.caretOffset, 5, "Correct caret offset.");
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_events_hide.js b/accessible/tests/browser/e10s/browser_events_hide.js
new file mode 100644
index 0000000000..77bd70c0f6
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_events_hide.js
@@ -0,0 +1,44 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test hide event and its interface:
+ *   - targetParent
+ *   - targetNextSibling
+ *   - targetPrevSibling
+ */
+addAccessibleTask(
+  `
+  

+    
+    

+    
+  
`,
+  async function (browser, accDoc) {
+    let acc = findAccessibleChildByID(accDoc, "to-hide");
+    let onHide = waitForEvent(EVENT_HIDE, acc);
+    await invokeSetStyle(browser, "to-hide", "visibility", "hidden");
+    let event = await onHide;
+    let hideEvent = event.QueryInterface(Ci.nsIAccessibleHideEvent);
+
+    is(
+      getAccessibleDOMNodeID(hideEvent.targetParent),
+      "parent",
+      "Correct target parent."
+    );
+    is(
+      getAccessibleDOMNodeID(hideEvent.targetNextSibling),
+      "next",
+      "Correct target next sibling."
+    );
+    is(
+      getAccessibleDOMNodeID(hideEvent.targetPrevSibling),
+      "previous",
+      "Correct target previous sibling."
+    );
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_events_show.js b/accessible/tests/browser/e10s/browser_events_show.js
new file mode 100644
index 0000000000..fb03ce2329
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_events_show.js
@@ -0,0 +1,22 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test show event
+ */
+addAccessibleTask(
+  '',
+  async function (browser) {
+    let onShow = waitForEvent(EVENT_SHOW, "div");
+    await invokeSetStyle(browser, "div", "visibility", "visible");
+    let showEvent = await onShow;
+    ok(
+      showEvent.accessibleDocument instanceof nsIAccessibleDocument,
+      "Accessible document not present."
+    );
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_events_statechange.js b/accessible/tests/browser/e10s/browser_events_statechange.js
new file mode 100644
index 0000000000..a510c5b9b5
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_events_statechange.js
@@ -0,0 +1,71 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+function checkStateChangeEvent(event, state, isExtraState, isEnabled) {
+  let scEvent = event.QueryInterface(nsIAccessibleStateChangeEvent);
+  is(scEvent.state, state, "Correct state of the statechange event.");
+  is(
+    scEvent.isExtraState,
+    isExtraState,
+    "Correct extra state bit of the statechange event."
+  );
+  is(scEvent.isEnabled, isEnabled, "Correct state of statechange event state");
+}
+
+// Insert mock source into the iframe to be able to verify the right document
+// body id.
+let iframeSrc = `data:text/html,
+  
+    
+      
+      Inner Iframe
+    
+    
+  `;
+
+/**
+ * Test state change event and its interface:
+ *   - state
+ *   - isExtraState
+ *   - isEnabled
+ */
+addAccessibleTask(
+  `
+  
+  `,
+  async function (browser) {
+    // Test state change
+    let onStateChange = waitForEvent(EVENT_STATE_CHANGE, "checkbox");
+    // Set checked for a checkbox.
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("checkbox").checked = true;
+    });
+    let event = await onStateChange;
+
+    checkStateChangeEvent(event, STATE_CHECKED, false, true);
+    testStates(event.accessible, STATE_CHECKED, 0);
+
+    // Test extra state
+    onStateChange = waitForEvent(EVENT_STATE_CHANGE, "iframe");
+    // Set design mode on.
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("iframe").contentDocument.designMode =
+        "on";
+    });
+    event = await onStateChange;
+
+    checkStateChangeEvent(event, EXT_STATE_EDITABLE, true, true);
+    testStates(event.accessible, 0, EXT_STATE_EDITABLE);
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_events_textchange.js b/accessible/tests/browser/e10s/browser_events_textchange.js
new file mode 100644
index 0000000000..f39ecea8c4
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_events_textchange.js
@@ -0,0 +1,119 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+function checkTextChangeEvent(
+  event,
+  id,
+  text,
+  start,
+  end,
+  isInserted,
+  isFromUserInput
+) {
+  let tcEvent = event.QueryInterface(nsIAccessibleTextChangeEvent);
+  is(tcEvent.start, start, `Correct start offset for ${prettyName(id)}`);
+  is(tcEvent.length, end - start, `Correct length for ${prettyName(id)}`);
+  is(
+    tcEvent.isInserted,
+    isInserted,
+    `Correct isInserted flag for ${prettyName(id)}`
+  );
+  is(tcEvent.modifiedText, text, `Correct text for ${prettyName(id)}`);
+  is(
+    tcEvent.isFromUserInput,
+    isFromUserInput,
+    `Correct value of isFromUserInput for ${prettyName(id)}`
+  );
+  ok(
+    tcEvent.accessibleDocument instanceof nsIAccessibleDocument,
+    "Accessible document not present."
+  );
+}
+
+async function changeText(browser, id, value, events) {
+  let onEvents = waitForOrderedEvents(
+    events.map(({ isInserted }) => {
+      let eventType = isInserted ? EVENT_TEXT_INSERTED : EVENT_TEXT_REMOVED;
+      return [eventType, id];
+    })
+  );
+  // Change text in the subtree.
+  await invokeContentTask(browser, [id, value], (contentId, contentValue) => {
+    content.document.getElementById(contentId).firstChild.textContent =
+      contentValue;
+  });
+  let resolvedEvents = await onEvents;
+
+  events.forEach(({ isInserted, str, offset }, idx) =>
+    checkTextChangeEvent(
+      resolvedEvents[idx],
+      id,
+      str,
+      offset,
+      offset + str.length,
+      isInserted,
+      false
+    )
+  );
+}
+
+async function removeTextFromInput(browser, id, value, start, end) {
+  let onTextRemoved = waitForEvent(EVENT_TEXT_REMOVED, id);
+  // Select text and delete it.
+  await invokeContentTask(
+    browser,
+    [id, start, end],
+    (contentId, contentStart, contentEnd) => {
+      let el = content.document.getElementById(contentId);
+      el.focus();
+      el.setSelectionRange(contentStart, contentEnd);
+    }
+  );
+  await invokeContentTask(browser, [], () => {
+    const { ContentTaskUtils } = ChromeUtils.importESModule(
+      "resource://testing-common/ContentTaskUtils.sys.mjs"
+    );
+    const EventUtils = ContentTaskUtils.getEventUtils(content);
+    EventUtils.sendChar("VK_DELETE", content);
+  });
+
+  let event = await onTextRemoved;
+  checkTextChangeEvent(event, id, value, start, end, false, true);
+}
+
+/**
+ * Test text change event and its interface:
+ *   - start
+ *   - length
+ *   - isInserted
+ *   - modifiedText
+ *   - isFromUserInput
+ */
+addAccessibleTask(
+  `
+  
abc

+  `,
+  async function (browser) {
+    let events = [
+      { isInserted: false, str: "abc", offset: 0 },
+      { isInserted: true, str: "def", offset: 0 },
+    ];
+    await changeText(browser, "p", "def", events);
+
+    // Adding text should not send events with diffs for non-editable text.
+    // We do this to avoid screen readers reading out confusing diffs for
+    // live regions.
+    events = [
+      { isInserted: false, str: "def", offset: 0 },
+      { isInserted: true, str: "deDEFf", offset: 0 },
+    ];
+    await changeText(browser, "p", "deDEFf", events);
+
+    // Test isFromUserInput property.
+    await removeTextFromInput(browser, "input", "n", 1, 2);
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_events_vcchange.js b/accessible/tests/browser/e10s/browser_events_vcchange.js
new file mode 100644
index 0000000000..3571d66212
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_events_vcchange.js
@@ -0,0 +1,87 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+addAccessibleTask(
+  `
+  
abc

+  `,
+  async function (browser) {
+    let onVCChanged = waitForEvent(
+      EVENT_VIRTUALCURSOR_CHANGED,
+      matchContentDoc
+    );
+    await invokeContentTask(browser, [], () => {
+      const { CommonUtils } = ChromeUtils.importESModule(
+        "chrome://mochitests/content/browser/accessible/tests/browser/Common.sys.mjs"
+      );
+      let vc = CommonUtils.getAccessible(
+        content.document,
+        Ci.nsIAccessibleDocument
+      ).virtualCursor;
+      vc.position = CommonUtils.getAccessible(
+        "p1",
+        null,
+        null,
+        null,
+        content.document
+      );
+    });
+    let vccEvent = (await onVCChanged).QueryInterface(
+      nsIAccessibleVirtualCursorChangeEvent
+    );
+    is(vccEvent.newAccessible.id, "p1", "New position is correct");
+    is(vccEvent.newStartOffset, -1, "New start offset is correct");
+    is(vccEvent.newEndOffset, -1, "New end offset is correct");
+    ok(!vccEvent.isFromUserInput, "not user initiated");
+
+    onVCChanged = waitForEvent(EVENT_VIRTUALCURSOR_CHANGED, matchContentDoc);
+    await invokeContentTask(browser, [], () => {
+      const { CommonUtils } = ChromeUtils.importESModule(
+        "chrome://mochitests/content/browser/accessible/tests/browser/Common.sys.mjs"
+      );
+      let vc = CommonUtils.getAccessible(
+        content.document,
+        Ci.nsIAccessibleDocument
+      ).virtualCursor;
+      vc.moveNextByText(Ci.nsIAccessiblePivot.CHAR_BOUNDARY);
+    });
+    vccEvent = (await onVCChanged).QueryInterface(
+      nsIAccessibleVirtualCursorChangeEvent
+    );
+    is(vccEvent.newAccessible.id, vccEvent.oldAccessible.id, "Same position");
+    is(vccEvent.newStartOffset, 0, "New start offset is correct");
+    is(vccEvent.newEndOffset, 1, "New end offset is correct");
+    ok(vccEvent.isFromUserInput, "user initiated");
+
+    onVCChanged = waitForEvent(EVENT_VIRTUALCURSOR_CHANGED, matchContentDoc);
+    await invokeContentTask(browser, [], () => {
+      const { CommonUtils } = ChromeUtils.importESModule(
+        "chrome://mochitests/content/browser/accessible/tests/browser/Common.sys.mjs"
+      );
+      let vc = CommonUtils.getAccessible(
+        content.document,
+        Ci.nsIAccessibleDocument
+      ).virtualCursor;
+      vc.position = CommonUtils.getAccessible(
+        "input1",
+        null,
+        null,
+        null,
+        content.document
+      );
+    });
+    vccEvent = (await onVCChanged).QueryInterface(
+      nsIAccessibleVirtualCursorChangeEvent
+    );
+    isnot(vccEvent.oldAccessible, vccEvent.newAccessible, "positions differ");
+    is(vccEvent.oldAccessible.id, "p1", "Old position is correct");
+    is(vccEvent.newAccessible.id, "input1", "New position is correct");
+    is(vccEvent.newStartOffset, -1, "New start offset is correct");
+    is(vccEvent.newEndOffset, -1, "New end offset is correct");
+    ok(!vccEvent.isFromUserInput, "not user initiated");
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_language.js b/accessible/tests/browser/e10s/browser_language.js
new file mode 100644
index 0000000000..684d915693
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_language.js
@@ -0,0 +1,29 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+addAccessibleTask(
+  `
+
+

+

+  

+  

+

+  `,
+  async function (browser, docAcc) {
+    is(docAcc.language, "en", "Document language correct");
+    const inheritEn = findAccessibleChildByID(docAcc, "inheritEn");
+    is(inheritEn.language, "en", "inheritEn language correct");
+    const de = findAccessibleChildByID(docAcc, "de");
+    is(de.language, "de", "de language correct");
+    const fr = findAccessibleChildByID(docAcc, "fr");
+    is(fr.language, "fr", "fr language correct");
+  },
+  { chrome: true, topLevel: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_obj_group.js b/accessible/tests/browser/e10s/browser_obj_group.js
new file mode 100644
index 0000000000..7e22b8b491
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_obj_group.js
@@ -0,0 +1,430 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/attributes.js */
+loadScripts({ name: "attributes.js", dir: MOCHITESTS_DIR });
+
+/**
+ * select elements
+ */
+addAccessibleTask(
+  `
+
+  
+
+  `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // HTML select with no size attribute.
+    testGroupAttrs(getAcc("opt1-nosize"), 1, 4);
+    testGroupAttrs(getAcc("opt2-nosize"), 2, 4);
+    testGroupAttrs(getAcc("opt3-nosize"), 3, 4);
+    testGroupAttrs(getAcc("opt4-nosize"), 4, 4);
+
+    // Container should have item count and not hierarchical
+    testGroupParentAttrs(getAcc("opt1-nosize").parent, 4, false);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // HTML select
+    testGroupAttrs(getAcc("opt1"), 1, 2);
+    testGroupAttrs(getAcc("opt2"), 2, 2);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // HTML select with optgroup
+    testGroupAttrs(getAcc("select2_opt3"), 1, 2, 1);
+    testGroupAttrs(getAcc("select2_opt4"), 2, 2, 1);
+    testGroupAttrs(getAcc("select2_opt1"), 1, 2, 2);
+    testGroupAttrs(getAcc("select2_opt2"), 2, 2, 2);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+/**
+ * HTML radios
+ */
+addAccessibleTask(
+  `

+    
+    
+  

+
+  
+  
+
+  

+    
+    
+    
+  

+
+  `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // HTML input@type="radio" within form
+    testGroupAttrs(getAcc("radio1"), 1, 2);
+    testGroupAttrs(getAcc("radio2"), 2, 2);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // HTML input@type="radio" within document
+    testGroupAttrs(getAcc("radio3"), 1, 2);
+    // radio4 is wrapped in a label
+    testGroupAttrs(getAcc("radio4"), 2, 2);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // Hidden HTML input@type="radio"
+    testGroupAttrs(getAcc("radio5"), 1, 1);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // HTML input@type="radio" with different name but same parent
+    testGroupAttrs(getAcc("radio6"), 1, 1);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // HTML input@type="radio" with no name
+    testGroupAttrs(getAcc("radio7"), 0, 0);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+/**
+ * lists
+ */
+addAccessibleTask(
+  `
    
+    
  • Oranges
    • 
+    
  • Apples
    • 
+    
  • Bananas
    • 
+  

+
+  
    
+    
  1. Oranges
    2. 
+    
  2. Apples
    3. 
+    
  3. Bananas
+      
      
+        
    • Oranges
      • 
+        
    • Apples
      • 
+        
    • Bananas
      • 
+      
    
+    
    4. 
+  

+
+  
+    Oranges
+    Apples
+    Bananas
+  
+
+  
+    Oranges
+    Apples
+    Bananas
+      
+        Oranges
+        Apples
+        Bananas
+      
+    
+  
+
+  

+    
Item 1
+      

+        
Item 1A

+        
Item 1B

+      

+    

+    
Item 2
+      

+        
Item 2A

+        
Item 2B

+      

+    

+  
`,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // HTML ul/ol
+    testGroupAttrs(getAcc("li1"), 1, 3);
+    testGroupAttrs(getAcc("li2"), 2, 3);
+    testGroupAttrs(getAcc("li3"), 3, 3);
+
+    // ul should have item count and not hierarchical
+    testGroupParentAttrs(getAcc("ul"), 3, false);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // HTML ul/ol (nested lists)
+
+    testGroupAttrs(getAcc("li4"), 1, 3, 1);
+    testGroupAttrs(getAcc("li5"), 2, 3, 1);
+    testGroupAttrs(getAcc("li6"), 3, 3, 1);
+    // ol with nested list should have 1st level item count and be hierarchical
+    testGroupParentAttrs(getAcc("ol"), 3, true);
+
+    testGroupAttrs(getAcc("n_li4"), 1, 3, 2);
+    testGroupAttrs(getAcc("n_li5"), 2, 3, 2);
+    testGroupAttrs(getAcc("n_li6"), 3, 3, 2);
+    // nested ol should have item count and be hierarchical
+    testGroupParentAttrs(getAcc("ol_nested"), 3, true);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA list
+    testGroupAttrs(getAcc("li7"), 1, 3);
+    testGroupAttrs(getAcc("li8"), 2, 3);
+    testGroupAttrs(getAcc("li9"), 3, 3);
+    // simple flat aria list
+    testGroupParentAttrs(getAcc("aria-list_1"), 3, false);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA list (nested lists: list -> listitem -> list -> listitem)
+    testGroupAttrs(getAcc("li10"), 1, 3, 1);
+    testGroupAttrs(getAcc("li11"), 2, 3, 1);
+    testGroupAttrs(getAcc("li12"), 3, 3, 1);
+    // aria list with nested list
+    testGroupParentAttrs(getAcc("aria-list_2"), 3, true);
+
+    testGroupAttrs(getAcc("n_li10"), 1, 3, 2);
+    testGroupAttrs(getAcc("n_li11"), 2, 3, 2);
+    testGroupAttrs(getAcc("n_li12"), 3, 3, 2);
+    // nested aria list.
+    testGroupParentAttrs(getAcc("aria-list_2_1"), 3, true);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA list (nested lists: list -> listitem -> group -> listitem)
+    testGroupAttrs(getAcc("lgt_li1"), 1, 2, 1);
+    testGroupAttrs(getAcc("lgt_li1_nli1"), 1, 2, 2);
+    testGroupAttrs(getAcc("lgt_li1_nli2"), 2, 2, 2);
+    testGroupAttrs(getAcc("lgt_li2"), 2, 2, 1);
+    testGroupAttrs(getAcc("lgt_li2_nli1"), 1, 2, 2);
+    testGroupAttrs(getAcc("lgt_li2_nli2"), 2, 2, 2);
+    // aria list with nested list
+    testGroupParentAttrs(getAcc("aria-list_3"), 2, true);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+addAccessibleTask(
+  ``,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA menu (menuitem, separator, menuitemradio and menuitemcheckbox)
+    testGroupAttrs(getAcc("menu_item1"), 1, 2);
+    testGroupAttrs(getAcc("menu_item2"), 2, 2);
+    testGroupAttrs(getAcc("menu_item1.1"), 1, 2);
+    testGroupAttrs(getAcc("menu_item1.2"), 2, 2);
+    testGroupAttrs(getAcc("menu_item1.3"), 1, 3);
+    testGroupAttrs(getAcc("menu_item1.4"), 2, 3);
+    testGroupAttrs(getAcc("menu_item1.5"), 3, 3);
+    // menu bar item count
+    testGroupParentAttrs(getAcc("menubar"), 2, false);
+    // Bug 1492529. Menu should have total number of items 5 from both sets,
+    // but only has the first 2 item set.
+    todoAttr(getAcc("menu"), "child-item-count", "5");
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+addAccessibleTask(
+  `
    
+    
+    
+    
+  
`,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA tab
+    testGroupAttrs(getAcc("tab_1"), 1, 3);
+    testGroupAttrs(getAcc("tab_2"), 2, 3);
+    testGroupAttrs(getAcc("tab_3"), 3, 3);
+    // tab list tab count
+    testGroupParentAttrs(getAcc("tablist_1"), 3, false);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+addAccessibleTask(
+  `
    
+    
+    
+    
+  
`,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA radio
+    testGroupAttrs(getAcc("r1"), 1, 3);
+    testGroupAttrs(getAcc("r2"), 2, 3);
+    testGroupAttrs(getAcc("r3"), 3, 3);
+    // explicit aria radio group
+    testGroupParentAttrs(getAcc("rg1"), 3, false);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+addAccessibleTask(
+  `
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+    
+      
+    
+  
vegetables
cucumber
carrot
mercedes
BMW
Audi
people

+
+  
    
+    
  • Item 1
+      
      
+        
    • Item 1A
      • 
+        
    • Item 1B
      • 
+      
    
+    
    • 
+    
  • Item 2
+      
      
+        
    • Item 2A
      • 
+        
    • Item 2B
      • 
+      
    
+    
    • 
+  
+
+  
    
+    
    Item 1
    
+    
    
+      
  • Item 1A
    • 
+      
  • Item 1B
    • 
+    
    
+    
    Item 2
    
+    
    
+      
    Item 2A
    
+      
    Item 2B
    
+    
    
+  
    `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA tree
+    testGroupAttrs(getAcc("ti1"), 1, 3, 1);
+    testGroupAttrs(getAcc("ti2"), 1, 2, 2);
+    testGroupAttrs(getAcc("ti3"), 2, 2, 2);
+    testGroupAttrs(getAcc("ti4"), 2, 3, 1);
+    testGroupAttrs(getAcc("ti5"), 1, 3, 2);
+    testGroupAttrs(getAcc("ti6"), 2, 3, 2);
+    testGroupAttrs(getAcc("ti7"), 3, 3, 2);
+    testGroupAttrs(getAcc("ti8"), 3, 3, 1);
+    testGroupParentAttrs(getAcc("tree_1"), 3, true);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA tree (tree -> treeitem -> group -> treeitem)
+    testGroupAttrs(getAcc("tree2_ti1"), 1, 2, 1);
+    testGroupAttrs(getAcc("tree2_ti1a"), 1, 2, 2);
+    testGroupAttrs(getAcc("tree2_ti1b"), 2, 2, 2);
+    testGroupAttrs(getAcc("tree2_ti2"), 2, 2, 1);
+    testGroupAttrs(getAcc("tree2_ti2a"), 1, 2, 2);
+    testGroupAttrs(getAcc("tree2_ti2b"), 2, 2, 2);
+    testGroupParentAttrs(getAcc("tree_2"), 2, true);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA tree (tree -> treeitem, group -> treeitem)
+    testGroupAttrs(getAcc("tree3_ti1"), 1, 2, 1);
+    testGroupAttrs(getAcc("tree3_ti1a"), 1, 2, 2);
+    testGroupAttrs(getAcc("tree3_ti1b"), 2, 2, 2);
+    testGroupAttrs(getAcc("tree3_ti2"), 2, 2, 1);
+    testGroupAttrs(getAcc("tree3_ti2a"), 1, 2, 2);
+    testGroupAttrs(getAcc("tree3_ti2b"), 2, 2, 2);
+    testGroupParentAttrs(getAcc("tree_3"), 2, true);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
diff --git a/accessible/tests/browser/e10s/browser_obj_group_002.js b/accessible/tests/browser/e10s/browser_obj_group_002.js
new file mode 100644
index 0000000000..54cad4a019
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_obj_group_002.js
@@ -0,0 +1,390 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/attributes.js */
+loadScripts({ name: "attributes.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  `
+    
+      
+      
+    
+    
+      
+      
+    
+  
    cell1cell2
    cell3cell4
    `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA grid
+    testGroupAttrs(getAcc("grid_row1"), 1, 2);
+    testAbsentAttrs(getAcc("grid_cell1"), { posinset: "", setsize: "" });
+    testAbsentAttrs(getAcc("grid_cell2"), { posinset: "", setsize: "" });
+
+    testGroupAttrs(getAcc("grid_row2"), 2, 2);
+    testAbsentAttrs(getAcc("grid_cell3"), { posinset: "", setsize: "" });
+    testAbsentAttrs(getAcc("grid_cell4"), { posinset: "", setsize: "" });
+    testGroupParentAttrs(getAcc("grid"), 2, false, false);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+addAccessibleTask(
+  `
    
+    
    
+      
    cell1
    
+      
    cell2
    
+    
    
+    
    
+      
    cell1
    
+      
    cell2
    
+    
    
+    
    
+      
    cell1
    
+      
    cell2
    
+    
    
+  
    `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA treegrid
+    testGroupAttrs(getAcc("treegrid_row1"), 1, 2, 1);
+    testAbsentAttrs(getAcc("treegrid_cell1"), { posinset: "", setsize: "" });
+    testAbsentAttrs(getAcc("treegrid_cell2"), { posinset: "", setsize: "" });
+
+    testGroupAttrs(getAcc("treegrid_row2"), 1, 1, 2);
+    testAbsentAttrs(getAcc("treegrid_cell3"), { posinset: "", setsize: "" });
+    testAbsentAttrs(getAcc("treegrid_cell4"), { posinset: "", setsize: "" });
+
+    testGroupAttrs(getAcc("treegrid_row3"), 2, 2, 1);
+    testAbsentAttrs(getAcc("treegrid_cell5"), { posinset: "", setsize: "" });
+    testAbsentAttrs(getAcc("treegrid_cell6"), { posinset: "", setsize: "" });
+
+    testGroupParentAttrs(getAcc("treegrid"), 2, true);
+    // row child item count provided by parent grid's aria-colcount
+    testGroupParentAttrs(getAcc("treegrid_row1"), 4, false);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+addAccessibleTask(
+  `
    
+    
    heading1
    
+    
    heading2
    
+    
    heading3
    
+    
    heading4
    
+    
    heading5
    
+    
    heading6
    
+    
    ariaHeadingNoLevel
    
+  
    `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // HTML headings
+    testGroupAttrs(getAcc("h1"), 0, 0, 1);
+    testGroupAttrs(getAcc("h2"), 0, 0, 2);
+    testGroupAttrs(getAcc("h3"), 0, 0, 3);
+    testGroupAttrs(getAcc("h4"), 0, 0, 4);
+    testGroupAttrs(getAcc("h5"), 0, 0, 5);
+    testGroupAttrs(getAcc("h6"), 0, 0, 6);
+    testGroupAttrs(getAcc("ariaHeadingNoLevel"), 0, 0, 2);
+    // No child item counts or "tree" flag for parent of headings
+    testAbsentAttrs(getAcc("headings"), { "child-item-count": "", tree: "" });
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+addAccessibleTask(
+  `
      Password
+    
    • Xyzzy
      • 
+    
    • Plughs
      • 
+    
    • Shazaam
      • 
+    
    • JoeSentMe
      • 
+  
    `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA combobox
+    testGroupAttrs(getAcc("combo1_opt1"), 1, 4);
+    testGroupAttrs(getAcc("combo1_opt2"), 2, 4);
+    testGroupAttrs(getAcc("combo1_opt3"), 3, 4);
+    testGroupAttrs(getAcc("combo1_opt4"), 4, 4);
+    testGroupParentAttrs(getAcc("combo1"), 4, false);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+addAccessibleTask(
+  `
    
+    
    
+      
    cell
    
+    
    
+  
    `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA table
+    testGroupAttrs(getAcc("table_cell"), 3, 4);
+    testGroupAttrs(getAcc("table_row"), 2, 2);
+
+    // grid child item count provided by aria-rowcount
+    testGroupParentAttrs(getAcc("table"), 2, false);
+    // row child item count provided by parent grid's aria-colcount
+    testGroupParentAttrs(getAcc("table_row"), 4, false);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+addAccessibleTask(
+  `
    
+    
    
+      
    
+        
    cell content
    
+      
    
+    
    
+    
    
+      
    
+        
    cell content
    
+      
    
+    
    
+  
    `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // Attributes calculated even when row is wrapped in a div.
+    testGroupAttrs(getAcc("wrapped_row_1"), 1, 2, null);
+    testGroupAttrs(getAcc("wrapped_row_2"), 2, 2, null);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+addAccessibleTask(
+  `
    
+    
    Apples
    
+    
    Oranges
    
+  
    
+  
    Bananas
    `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // ////////////////////////////////////////////////////////////////////////
+    // ARIA list constructed by ARIA owns
+    testGroupAttrs(getAcc("t1_li1"), 1, 3);
+    testGroupAttrs(getAcc("t1_li2"), 2, 3);
+    testGroupAttrs(getAcc("t1_li3"), 3, 3);
+    testGroupParentAttrs(getAcc("aria-list_4"), 3, false);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+addAccessibleTask(
+  `
+  
    
+    
+    
+  
    
+
+  
+  
    
+    
+    
+    
+  
    `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // Test group attributes of ARIA comments
+    testGroupAttrs(getAcc("comm_single_1"), 1, 2, 1);
+    testGroupAttrs(getAcc("comm_single_2"), 2, 2, 1);
+    testGroupAttrs(getAcc("comm_nested_1"), 1, 3, 1);
+    testGroupAttrs(getAcc("comm_nested_1_1"), 1, 2, 2);
+    testGroupAttrs(getAcc("comm_nested_1_2"), 2, 2, 2);
+    testGroupAttrs(getAcc("comm_nested_2"), 2, 3, 1);
+    testGroupAttrs(getAcc("comm_nested_2_1"), 1, 1, 2);
+    testGroupAttrs(getAcc("comm_nested_2_1_1"), 1, 1, 3);
+    testGroupAttrs(getAcc("comm_nested_3"), 3, 3, 1);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+addAccessibleTask(
+  `
    Item 1
    Item 2
    `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    // Test that group position information updates after deleting node.
+    testGroupAttrs(getAcc("tree4_ti1"), 1, 2, 1);
+    testGroupAttrs(getAcc("tree4_ti2"), 2, 2, 1);
+    testGroupParentAttrs(getAcc("tree4"), 2, true);
+
+    let p = waitForEvent(EVENT_REORDER, "tree4");
+    invokeContentTask(browser, [], () => {
+      content.document.getElementById("tree4_ti1").remove();
+    });
+
+    await p;
+    testGroupAttrs(getAcc("tree4_ti2"), 1, 1, 1);
+    testGroupParentAttrs(getAcc("tree4"), 1, true);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+// Verify that intervening SECTION accs in ARIA compound widgets do not split
+// up the group info for descendant owned elements. Test various types of
+// widgets that should all be treated the same.
+addAccessibleTask(
+  `
    
+    
    
+      
    treeitem 1
    
+    
    
+    
    
+      
    treeitem 2
    
+    
    
+  
    
+  
    
+    
    
+      
    option 1
    
+    
    
+    
    
+      
    option 2
    
+    
    
+  
    
+  
    
+    
    
+      
    listitem 1
    
+    
    
+    
    
+      
    listitem 2
    
+    
    
+  
    
+  
+  
    
+    
    
+      
+    
    
+    
    
+      
+    
    
+  
    
+`,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    testGroupAttrs(getAcc("ti1"), 1, 2, 1);
+    testGroupAttrs(getAcc("ti2"), 2, 2, 1);
+
+    testGroupAttrs(getAcc("opt1"), 1, 2, 0);
+    testGroupAttrs(getAcc("opt2"), 2, 2, 0);
+
+    testGroupAttrs(getAcc("li1"), 1, 2, 0);
+    testGroupAttrs(getAcc("li2"), 2, 2, 0);
+
+    testGroupAttrs(getAcc("mi1"), 1, 2, 0);
+    testGroupAttrs(getAcc("mi2"), 2, 2, 0);
+
+    testGroupAttrs(getAcc("r1"), 1, 2, 0);
+    testGroupAttrs(getAcc("r2"), 2, 2, 0);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
+
+// Verify that non-generic accessibles (like buttons) correctly split the group
+// info of descendant owned elements.
+addAccessibleTask(
+  `
    
+    
    
+      
    first
    
+    
    
+    
    
+      
    second
    
+    
    
+  
    `,
+  async function (browser, accDoc) {
+    let getAcc = id => findAccessibleChildByID(accDoc, id);
+
+    testGroupAttrs(getAcc("ti1"), 1, 1, 1);
+    testGroupAttrs(getAcc("ti2"), 1, 1, 1);
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_ariadialog.js b/accessible/tests/browser/e10s/browser_treeupdate_ariadialog.js
new file mode 100644
index 0000000000..6d5995531e
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_ariadialog.js
@@ -0,0 +1,45 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+// Test ARIA Dialog
+addAccessibleTask(
+  "e10s/doc_treeupdate_ariadialog.html",
+  async function (browser, accDoc) {
+    testAccessibleTree(accDoc, {
+      role: ROLE_DOCUMENT,
+      children: [],
+    });
+
+    // Make dialog visible and update its inner content.
+    let onShow = waitForEvent(EVENT_SHOW, "dialog");
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("dialog").style.display = "block";
+    });
+    await onShow;
+
+    testAccessibleTree(accDoc, {
+      role: ROLE_DOCUMENT,
+      children: [
+        {
+          role: ROLE_DIALOG,
+          children: [
+            {
+              role: ROLE_PUSHBUTTON,
+              children: [{ role: ROLE_TEXT_LEAF }],
+            },
+            {
+              role: ROLE_ENTRY,
+            },
+          ],
+        },
+      ],
+    });
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_ariaowns.js b/accessible/tests/browser/e10s/browser_treeupdate_ariaowns.js
new file mode 100644
index 0000000000..c8fb7e5488
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_ariaowns.js
@@ -0,0 +1,325 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+async function testContainer1(browser, accDoc) {
+  const id = "t1_container";
+  const docID = getAccessibleDOMNodeID(accDoc);
+  const acc = findAccessibleChildByID(accDoc, id);
+
+  /* ================= Initial tree test ==================================== */
+  // children are swapped by ARIA owns
+  let tree = {
+    SECTION: [{ CHECKBUTTON: [{ SECTION: [] }] }, { PUSHBUTTON: [] }],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================ Change ARIA owns ====================================== */
+  let onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeSetAttribute(browser, id, "aria-owns", "t1_button t1_subdiv");
+  await onReorder;
+
+  // children are swapped again, button and subdiv are appended to
+  // the children.
+  tree = {
+    SECTION: [
+      { CHECKBUTTON: [] }, // checkbox, native order
+      { PUSHBUTTON: [] }, // button, rearranged by ARIA own
+      { SECTION: [] }, // subdiv from the subtree, ARIA owned
+    ],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================ Remove ARIA owns ====================================== */
+  onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeSetAttribute(browser, id, "aria-owns");
+  await onReorder;
+
+  // children follow the DOM order
+  tree = {
+    SECTION: [{ PUSHBUTTON: [] }, { CHECKBUTTON: [{ SECTION: [] }] }],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================ Set ARIA owns ========================================= */
+  onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeSetAttribute(browser, id, "aria-owns", "t1_button t1_subdiv");
+  await onReorder;
+
+  // children are swapped again, button and subdiv are appended to
+  // the children.
+  tree = {
+    SECTION: [
+      { CHECKBUTTON: [] }, // checkbox
+      { PUSHBUTTON: [] }, // button, rearranged by ARIA own
+      { SECTION: [] }, // subdiv from the subtree, ARIA owned
+    ],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================ Add ID to ARIA owns =================================== */
+  onReorder = waitForEvent(EVENT_REORDER, docID);
+  await invokeSetAttribute(
+    browser,
+    id,
+    "aria-owns",
+    "t1_button t1_subdiv t1_group"
+  );
+  await onReorder;
+
+  // children are swapped again, button and subdiv are appended to
+  // the children.
+  tree = {
+    SECTION: [
+      { CHECKBUTTON: [] }, // t1_checkbox
+      { PUSHBUTTON: [] }, // button, t1_button
+      { SECTION: [] }, // subdiv from the subtree, t1_subdiv
+      { GROUPING: [] }, // group from outside, t1_group
+    ],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================ Append element ======================================== */
+  onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeContentTask(browser, [id], contentId => {
+    let div = content.document.createElement("div");
+    div.setAttribute("id", "t1_child3");
+    div.setAttribute("role", "radio");
+    content.document.getElementById(contentId).appendChild(div);
+  });
+  await onReorder;
+
+  // children are invalidated, they includes aria-owns swapped kids and
+  // newly inserted child.
+  tree = {
+    SECTION: [
+      { CHECKBUTTON: [] }, // existing explicit, t1_checkbox
+      { RADIOBUTTON: [] }, // new explicit, t1_child3
+      { PUSHBUTTON: [] }, // ARIA owned, t1_button
+      { SECTION: [] }, // ARIA owned, t1_subdiv
+      { GROUPING: [] }, // ARIA owned, t1_group
+    ],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================ Remove element ======================================== */
+  onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeContentTask(browser, [], () => {
+    content.document.getElementById("t1_span").remove();
+  });
+  await onReorder;
+
+  // subdiv should go away
+  tree = {
+    SECTION: [
+      { CHECKBUTTON: [] }, // explicit, t1_checkbox
+      { RADIOBUTTON: [] }, // explicit, t1_child3
+      { PUSHBUTTON: [] }, // ARIA owned, t1_button
+      { GROUPING: [] }, // ARIA owned, t1_group
+    ],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================ Remove ID ============================================= */
+  onReorder = waitForEvent(EVENT_REORDER, docID);
+  await invokeSetAttribute(browser, "t1_group", "id");
+  await onReorder;
+
+  tree = {
+    SECTION: [
+      { CHECKBUTTON: [] },
+      { RADIOBUTTON: [] },
+      { PUSHBUTTON: [] }, // ARIA owned, t1_button
+    ],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================ Set ID ================================================ */
+  onReorder = waitForEvent(EVENT_REORDER, docID);
+  await invokeSetAttribute(browser, "t1_grouptmp", "id", "t1_group");
+  await onReorder;
+
+  tree = {
+    SECTION: [
+      { CHECKBUTTON: [] },
+      { RADIOBUTTON: [] },
+      { PUSHBUTTON: [] }, // ARIA owned, t1_button
+      { GROUPING: [] }, // ARIA owned, t1_group, previously t1_grouptmp
+    ],
+  };
+  testAccessibleTree(acc, tree);
+}
+
+async function removeContainer(browser, accDoc) {
+  const id = "t2_container1";
+  const acc = findAccessibleChildByID(accDoc, id);
+
+  let tree = {
+    SECTION: [
+      { CHECKBUTTON: [] }, // ARIA owned, 't2_owned'
+    ],
+  };
+  testAccessibleTree(acc, tree);
+
+  let onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeContentTask(browser, [], () => {
+    content.document
+      .getElementById("t2_container2")
+      .removeChild(content.document.getElementById("t2_container3"));
+  });
+  await onReorder;
+
+  tree = {
+    SECTION: [],
+  };
+  testAccessibleTree(acc, tree);
+}
+
+async function stealAndRecacheChildren(browser, accDoc) {
+  const id1 = "t3_container1";
+  const id2 = "t3_container2";
+  const acc1 = findAccessibleChildByID(accDoc, id1);
+  const acc2 = findAccessibleChildByID(accDoc, id2);
+
+  /* ================ Attempt to steal from other ARIA owns ================= */
+  let onReorder = waitForEvent(EVENT_REORDER, id2);
+  await invokeSetAttribute(browser, id2, "aria-owns", "t3_child");
+  await invokeContentTask(browser, [id2], id => {
+    let div = content.document.createElement("div");
+    div.setAttribute("role", "radio");
+    content.document.getElementById(id).appendChild(div);
+  });
+  await onReorder;
+
+  let tree = {
+    SECTION: [
+      { CHECKBUTTON: [] }, // ARIA owned
+    ],
+  };
+  testAccessibleTree(acc1, tree);
+
+  tree = {
+    SECTION: [{ RADIOBUTTON: [] }],
+  };
+  testAccessibleTree(acc2, tree);
+}
+
+async function showHiddenElement(browser, accDoc) {
+  const id = "t4_container1";
+  const acc = findAccessibleChildByID(accDoc, id);
+
+  let tree = {
+    SECTION: [{ RADIOBUTTON: [] }],
+  };
+  testAccessibleTree(acc, tree);
+
+  let onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeSetStyle(browser, "t4_child1", "display", "block");
+  await onReorder;
+
+  tree = {
+    SECTION: [{ CHECKBUTTON: [] }, { RADIOBUTTON: [] }],
+  };
+  testAccessibleTree(acc, tree);
+}
+
+async function rearrangeARIAOwns(browser, accDoc) {
+  const id = "t5_container";
+  const acc = findAccessibleChildByID(accDoc, id);
+  const tests = [
+    {
+      val: "t5_checkbox t5_radio t5_button",
+      roleList: ["CHECKBUTTON", "RADIOBUTTON", "PUSHBUTTON"],
+    },
+    {
+      val: "t5_radio t5_button t5_checkbox",
+      roleList: ["RADIOBUTTON", "PUSHBUTTON", "CHECKBUTTON"],
+    },
+  ];
+
+  for (let { val, roleList } of tests) {
+    let onReorder = waitForEvent(EVENT_REORDER, id);
+    await invokeSetAttribute(browser, id, "aria-owns", val);
+    await onReorder;
+
+    let tree = { SECTION: [] };
+    for (let role of roleList) {
+      let ch = {};
+      ch[role] = [];
+      tree.SECTION.push(ch);
+    }
+    testAccessibleTree(acc, tree);
+  }
+}
+
+async function removeNotARIAOwnedEl(browser, accDoc) {
+  const id = "t6_container";
+  const acc = findAccessibleChildByID(accDoc, id);
+
+  let tree = {
+    SECTION: [{ TEXT_LEAF: [] }, { GROUPING: [] }],
+  };
+  testAccessibleTree(acc, tree);
+
+  let onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeContentTask(browser, [id], contentId => {
+    content.document
+      .getElementById(contentId)
+      .removeChild(content.document.getElementById("t6_span"));
+  });
+  await onReorder;
+
+  tree = {
+    SECTION: [{ GROUPING: [] }],
+  };
+  testAccessibleTree(acc, tree);
+}
+
+addAccessibleTask(
+  "e10s/doc_treeupdate_ariaowns.html",
+  async function (browser, accDoc) {
+    await testContainer1(browser, accDoc);
+    await removeContainer(browser, accDoc);
+    await stealAndRecacheChildren(browser, accDoc);
+    await showHiddenElement(browser, accDoc);
+    await rearrangeARIAOwns(browser, accDoc);
+    await removeNotARIAOwnedEl(browser, accDoc);
+  },
+  { iframe: true, remoteIframe: true }
+);
+
+// Test owning an ancestor which isn't created yet with an iframe in the
+// subtree.
+addAccessibleTask(
+  `
+  
+    
    
+      
+  
    
+    
+  
    
+  
+  `,
+  async function (browser, accDoc) {
+    testAccessibleTree(accDoc, {
+      DOCUMENT: [
+        {
+          // b
+          SECTION: [
+            {
+              // c
+              SECTION: [{ INTERNAL_FRAME: [{ DOCUMENT: [] }] }],
+            },
+          ],
+        },
+      ],
+    });
+  }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_canvas.js b/accessible/tests/browser/e10s/browser_treeupdate_canvas.js
new file mode 100644
index 0000000000..ad7338f725
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_canvas.js
@@ -0,0 +1,28 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  `
+  
+    
+  `,
+  async function (browser, accDoc) {
+    let canvas = findAccessibleChildByID(accDoc, "canvas");
+    let dialog = findAccessibleChildByID(accDoc, "dialog");
+
+    testAccessibleTree(canvas, { CANVAS: [] });
+
+    let onShow = waitForEvent(EVENT_SHOW, "dialog");
+    await invokeSetStyle(browser, "dialog", "display", "block");
+    await onShow;
+
+    testAccessibleTree(dialog, { DIALOG: [] });
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_csscontentvisibility.js b/accessible/tests/browser/e10s/browser_treeupdate_csscontentvisibility.js
new file mode 100644
index 0000000000..0af583a96c
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_csscontentvisibility.js
@@ -0,0 +1,72 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+const snippet = `
+  
+  
+  `;
+
+add_setup(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [["layout.css.content-visibility.enabled", true]],
+  });
+});
+
+async function setContentVisibility(browser, id, value) {
+  let onReorder = waitForEvent(EVENT_REORDER, id);
+
+  // Change the value of `content-visibility` property for the target
+  info(`Setting content-visibility: ${value} on ${id}`);
+  await invokeSetAttribute(browser, id, "class", value);
+  await onReorder;
+}
+
+addAccessibleTask(
+  snippet,
+  async function (browser, accDoc) {
+    const targetId = "target";
+    const target = findAccessibleChildByID(accDoc, targetId);
+
+    info("Initial Accessibility Structure Test");
+    testAccessibleTree(target, { SECTION: [] });
+
+    await setContentVisibility(browser, targetId, "auto");
+    testAccessibleTree(target, { SECTION: [{ SECTION: [] }, { SECTION: [] }] });
+
+    await setContentVisibility(browser, targetId, "hidden");
+    testAccessibleTree(target, { SECTION: [] });
+  },
+  { iframe: true, remoteIframe: true, chrome: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_cssoverflow.js b/accessible/tests/browser/e10s/browser_treeupdate_cssoverflow.js
new file mode 100644
index 0000000000..4d18f1c08d
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_cssoverflow.js
@@ -0,0 +1,60 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  `
+  
    `,
+  async function (browser, accDoc) {
+    const id1 = "container";
+    const container = findAccessibleChildByID(accDoc, id1);
+
+    /* ================= Change scroll range ================================== */
+    let tree = {
+      SECTION: [
+        {
+          // container
+          SECTION: [
+            {
+              // scroll area
+              ENTRY: [], // child content
+            },
+          ],
+        },
+      ],
+    };
+    testAccessibleTree(container, tree);
+
+    let onReorder = waitForEvent(EVENT_REORDER, id1);
+    await invokeContentTask(browser, [id1], id => {
+      let doc = content.document;
+      doc.getElementById("scrollarea").style.width = "20px";
+      doc.getElementById(id).appendChild(doc.createElement("input"));
+    });
+    await onReorder;
+
+    tree = {
+      SECTION: [
+        {
+          // container
+          SECTION: [
+            {
+              // scroll area
+              ENTRY: [], // child content
+            },
+          ],
+        },
+        {
+          ENTRY: [], // inserted input
+        },
+      ],
+    };
+    testAccessibleTree(container, tree);
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_doc.js b/accessible/tests/browser/e10s/browser_treeupdate_doc.js
new file mode 100644
index 0000000000..982b039762
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_doc.js
@@ -0,0 +1,320 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+const iframeSrc = `data:text/html,
+  
+    
+      
+      Inner Iframe
+    
+    
+  `;
+
+addAccessibleTask(
+  `
+  `,
+  async function (browser, accDoc) {
+    // ID of the iframe that is being tested
+    const id = "inner-iframe";
+
+    let iframe = findAccessibleChildByID(accDoc, id);
+
+    /* ================= Initial tree check =================================== */
+    let tree = {
+      role: ROLE_DOCUMENT,
+      children: [],
+    };
+    testAccessibleTree(iframe, tree);
+
+    /* ================= Write iframe document ================================ */
+    let reorderEventPromise = waitForEvent(EVENT_REORDER, id);
+    await invokeContentTask(browser, [id], contentId => {
+      let docNode = content.document.getElementById("iframe").contentDocument;
+      let newHTMLNode = docNode.createElement("html");
+      let newBodyNode = docNode.createElement("body");
+      let newTextNode = docNode.createTextNode("New Wave");
+      newBodyNode.id = contentId;
+      newBodyNode.appendChild(newTextNode);
+      newHTMLNode.appendChild(newBodyNode);
+      docNode.replaceChild(newHTMLNode, docNode.documentElement);
+    });
+    await reorderEventPromise;
+
+    tree = {
+      role: ROLE_DOCUMENT,
+      children: [
+        {
+          role: ROLE_TEXT_LEAF,
+          name: "New Wave",
+        },
+      ],
+    };
+    testAccessibleTree(iframe, tree);
+
+    /* ================= Replace iframe HTML element ========================== */
+    reorderEventPromise = waitForEvent(EVENT_REORDER, id);
+    await invokeContentTask(browser, [id], contentId => {
+      let docNode = content.document.getElementById("iframe").contentDocument;
+      // We can't use open/write/close outside of iframe document because of
+      // security error.
+      let script = docNode.createElement("script");
+      script.textContent = `
+      document.open();
+      document.write('hello');
+      document.close();`;
+      docNode.body.appendChild(script);
+    });
+    await reorderEventPromise;
+
+    tree = {
+      role: ROLE_DOCUMENT,
+      children: [
+        {
+          role: ROLE_TEXT_LEAF,
+          name: "hello",
+        },
+      ],
+    };
+    testAccessibleTree(iframe, tree);
+
+    /* ================= Replace iframe body ================================== */
+    reorderEventPromise = waitForEvent(EVENT_REORDER, id);
+    await invokeContentTask(browser, [id], contentId => {
+      let docNode = content.document.getElementById("iframe").contentDocument;
+      let newBodyNode = docNode.createElement("body");
+      let newTextNode = docNode.createTextNode("New Hello");
+      newBodyNode.id = contentId;
+      newBodyNode.appendChild(newTextNode);
+      newBodyNode.setAttribute("role", "application");
+      docNode.documentElement.replaceChild(newBodyNode, docNode.body);
+    });
+    await reorderEventPromise;
+
+    tree = {
+      role: ROLE_APPLICATION,
+      children: [
+        {
+          role: ROLE_TEXT_LEAF,
+          name: "New Hello",
+        },
+      ],
+    };
+    testAccessibleTree(iframe, tree);
+
+    /* ================= Open iframe document ================================= */
+    reorderEventPromise = waitForEvent(EVENT_REORDER, id);
+    await invokeContentTask(browser, [id], contentId => {
+      // Open document.
+      let docNode = content.document.getElementById("iframe").contentDocument;
+      let script = docNode.createElement("script");
+      script.textContent = `
+      function closeMe() {
+        document.write('Works?');
+        document.close();
+      }
+      window.closeMe = closeMe;
+      document.open();
+      document.write('');`;
+      docNode.body.appendChild(script);
+    });
+    await reorderEventPromise;
+
+    tree = {
+      role: ROLE_DOCUMENT,
+      children: [],
+    };
+    testAccessibleTree(iframe, tree);
+
+    /* ================= Close iframe document ================================ */
+    reorderEventPromise = waitForEvent(EVENT_REORDER, id);
+    await invokeContentTask(browser, [], () => {
+      // Write and close document.
+      let docNode = content.document.getElementById("iframe").contentDocument;
+      docNode.write("Works?");
+      docNode.close();
+    });
+    await reorderEventPromise;
+
+    tree = {
+      role: ROLE_DOCUMENT,
+      children: [
+        {
+          role: ROLE_TEXT_LEAF,
+          name: "Works?",
+        },
+      ],
+    };
+    testAccessibleTree(iframe, tree);
+
+    /* ================= Remove HTML from iframe document ===================== */
+    reorderEventPromise = waitForEvent(EVENT_REORDER, iframe);
+    await invokeContentTask(browser, [], () => {
+      // Remove HTML element.
+      let docNode = content.document.getElementById("iframe").contentDocument;
+      docNode.firstChild.remove();
+    });
+    let event = await reorderEventPromise;
+
+    ok(
+      event.accessible instanceof nsIAccessibleDocument,
+      "Reorder should happen on the document"
+    );
+    tree = {
+      role: ROLE_DOCUMENT,
+      children: [],
+    };
+    testAccessibleTree(iframe, tree);
+
+    /* ================= Insert HTML to iframe document ======================= */
+    reorderEventPromise = waitForEvent(EVENT_REORDER, id);
+    await invokeContentTask(browser, [id], contentId => {
+      // Insert HTML element.
+      let docNode = content.document.getElementById("iframe").contentDocument;
+      let html = docNode.createElement("html");
+      let body = docNode.createElement("body");
+      let text = docNode.createTextNode("Haha");
+      body.appendChild(text);
+      body.id = contentId;
+      html.appendChild(body);
+      docNode.appendChild(html);
+    });
+    await reorderEventPromise;
+
+    tree = {
+      role: ROLE_DOCUMENT,
+      children: [
+        {
+          role: ROLE_TEXT_LEAF,
+          name: "Haha",
+        },
+      ],
+    };
+    testAccessibleTree(iframe, tree);
+
+    /* ================= Remove body from iframe document ===================== */
+    reorderEventPromise = waitForEvent(EVENT_REORDER, iframe);
+    await invokeContentTask(browser, [], () => {
+      // Remove body element.
+      let docNode = content.document.getElementById("iframe").contentDocument;
+      docNode.documentElement.removeChild(docNode.body);
+    });
+    event = await reorderEventPromise;
+
+    ok(
+      event.accessible instanceof nsIAccessibleDocument,
+      "Reorder should happen on the document"
+    );
+    tree = {
+      role: ROLE_DOCUMENT,
+      children: [],
+    };
+    testAccessibleTree(iframe, tree);
+
+    /* ================ Insert element under document element while body missed */
+    reorderEventPromise = waitForEvent(EVENT_REORDER, iframe);
+    await invokeContentTask(browser, [], () => {
+      let docNode = content.document.getElementById("iframe").contentDocument;
+      let inputNode = (content.window.inputNode =
+        docNode.createElement("input"));
+      docNode.documentElement.appendChild(inputNode);
+    });
+    event = await reorderEventPromise;
+
+    ok(
+      event.accessible instanceof nsIAccessibleDocument,
+      "Reorder should happen on the document"
+    );
+    tree = {
+      DOCUMENT: [{ ENTRY: [] }],
+    };
+    testAccessibleTree(iframe, tree);
+
+    reorderEventPromise = waitForEvent(EVENT_REORDER, iframe);
+    await invokeContentTask(browser, [], () => {
+      let docEl =
+        content.document.getElementById("iframe").contentDocument
+          .documentElement;
+      // Remove aftermath of this test before next test starts.
+      docEl.firstChild.remove();
+    });
+    // Make sure reorder event was fired and that the input was removed.
+    await reorderEventPromise;
+    tree = {
+      role: ROLE_DOCUMENT,
+      children: [],
+    };
+    testAccessibleTree(iframe, tree);
+
+    /* ================= Insert body to iframe document ======================= */
+    reorderEventPromise = waitForEvent(EVENT_REORDER, id);
+    await invokeContentTask(browser, [id], contentId => {
+      // Write and close document.
+      let docNode = content.document.getElementById("iframe").contentDocument;
+      // Insert body element.
+      let body = docNode.createElement("body");
+      let text = docNode.createTextNode("Yo ho ho i butylka roma!");
+      body.appendChild(text);
+      body.id = contentId;
+      docNode.documentElement.appendChild(body);
+    });
+    await reorderEventPromise;
+
+    tree = {
+      role: ROLE_DOCUMENT,
+      children: [
+        {
+          role: ROLE_TEXT_LEAF,
+          name: "Yo ho ho i butylka roma!",
+        },
+      ],
+    };
+    testAccessibleTree(iframe, tree);
+
+    /* ================= Change source ======================================== */
+    reorderEventPromise = waitForEvent(EVENT_REORDER, "iframe");
+    await invokeSetAttribute(
+      browser,
+      "iframe",
+      "src",
+      `data:text/html,`
+    );
+    event = await reorderEventPromise;
+
+    tree = {
+      INTERNAL_FRAME: [{ DOCUMENT: [{ ENTRY: [] }] }],
+    };
+    testAccessibleTree(event.accessible, tree);
+    iframe = findAccessibleChildByID(event.accessible, id);
+
+    /* ================= Replace iframe body on ARIA role body ================ */
+    reorderEventPromise = waitForEvent(EVENT_REORDER, id);
+    await invokeContentTask(browser, [id], contentId => {
+      let docNode = content.document.getElementById("iframe").contentDocument;
+      let newBodyNode = docNode.createElement("body");
+      let newTextNode = docNode.createTextNode("New Hello");
+      newBodyNode.appendChild(newTextNode);
+      newBodyNode.setAttribute("role", "application");
+      newBodyNode.id = contentId;
+      docNode.documentElement.replaceChild(newBodyNode, docNode.body);
+    });
+    await reorderEventPromise;
+
+    tree = {
+      role: ROLE_APPLICATION,
+      children: [
+        {
+          role: ROLE_TEXT_LEAF,
+          name: "New Hello",
+        },
+      ],
+    };
+    testAccessibleTree(iframe, tree);
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_gencontent.js b/accessible/tests/browser/e10s/browser_treeupdate_gencontent.js
new file mode 100644
index 0000000000..95406d96cf
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_gencontent.js
@@ -0,0 +1,94 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  `
+  
+  
    
+  
    text
    `,
+  async function (browser, accDoc) {
+    const id1 = "container1";
+    const id2 = "container2";
+    let container1 = findAccessibleChildByID(accDoc, id1);
+    let container2 = findAccessibleChildByID(accDoc, id2);
+
+    let tree = {
+      SECTION: [], // container
+    };
+    testAccessibleTree(container1, tree);
+
+    tree = {
+      SECTION: [
+        {
+          // container2
+          SECTION: [
+            {
+              // container2 child
+              TEXT_LEAF: [], // primary text
+            },
+          ],
+        },
+      ],
+    };
+    testAccessibleTree(container2, tree);
+
+    let onReorder = waitForEvent(EVENT_REORDER, id1);
+    // Create and add an element with CSS generated content to container1
+    await invokeContentTask(browser, [id1], id => {
+      let node = content.document.createElement("div");
+      node.textContent = "text";
+      node.setAttribute("class", "gentext");
+      content.document.getElementById(id).appendChild(node);
+    });
+    await onReorder;
+
+    tree = {
+      SECTION: [
+        // container
+        {
+          SECTION: [
+            // inserted node
+            { STATICTEXT: [] }, // :before
+            { TEXT_LEAF: [] }, // primary text
+            { STATICTEXT: [] }, // :after
+          ],
+        },
+      ],
+    };
+    testAccessibleTree(container1, tree);
+
+    onReorder = waitForEvent(EVENT_REORDER, "container2_child");
+    // Add CSS generated content to an element in container2's subtree
+    await invokeSetAttribute(browser, "container2_child", "class", "gentext");
+    await onReorder;
+
+    tree = {
+      SECTION: [
+        // container2
+        {
+          SECTION: [
+            // container2 child
+            { STATICTEXT: [] }, // :before
+            { TEXT_LEAF: [] }, // primary text
+            { STATICTEXT: [] }, // :after
+          ],
+        },
+      ],
+    };
+    testAccessibleTree(container2, tree);
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_hidden.js b/accessible/tests/browser/e10s/browser_treeupdate_hidden.js
new file mode 100644
index 0000000000..d3817a003b
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_hidden.js
@@ -0,0 +1,32 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+async function setHidden(browser, value) {
+  let onReorder = waitForEvent(EVENT_REORDER, "container");
+  await invokeSetAttribute(browser, "child", "hidden", value);
+  await onReorder;
+}
+
+addAccessibleTask(
+  '
    ',
+  async function (browser, accDoc) {
+    let container = findAccessibleChildByID(accDoc, "container");
+
+    testAccessibleTree(container, { SECTION: [{ ENTRY: [] }] });
+
+    // Set @hidden attribute
+    await setHidden(browser, "true");
+    testAccessibleTree(container, { SECTION: [] });
+
+    // Remove @hidden attribute
+    await setHidden(browser);
+    testAccessibleTree(container, { SECTION: [{ ENTRY: [] }] });
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_image.js b/accessible/tests/browser/e10s/browser_treeupdate_image.js
new file mode 100644
index 0000000000..cf45de65e0
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_image.js
@@ -0,0 +1,192 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+const IMG_ID = "img";
+const ALT_TEXT = "some-text";
+const ARIA_LABEL = "some-label";
+
+// Verify that granting alt text adds the graphic accessible.
+addAccessibleTask(
+  ``,
+  async function (browser, accDoc) {
+    // Test initial state; the img has empty alt text so it should not be in the tree.
+    const acc = findAccessibleChildByID(accDoc, IMG_ID);
+    ok(!acc, "Image has no Accessible");
+
+    // Add the alt text. The graphic should have been inserted into the tree.
+    info(`Adding alt text "${ALT_TEXT}" to img id '${IMG_ID}'`);
+    const shown = waitForEvent(EVENT_SHOW, IMG_ID);
+    await invokeSetAttribute(browser, IMG_ID, "alt", ALT_TEXT);
+    await shown;
+    let tree = {
+      role: ROLE_GRAPHIC,
+      name: ALT_TEXT,
+      children: [],
+    };
+    testAccessibleTree(acc, tree);
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+// Verify that the graphic accessible exists even with a missing alt attribute.
+addAccessibleTask(
+  ``,
+  async function (browser, accDoc) {
+    // Test initial state; the img has no alt attribute so the name is empty.
+    const acc = findAccessibleChildByID(accDoc, IMG_ID);
+    let tree = {
+      role: ROLE_GRAPHIC,
+      name: null,
+      children: [],
+    };
+    testAccessibleTree(acc, tree);
+
+    // Add the alt text. The graphic should still be present in the tree.
+    info(`Adding alt attribute with text "${ALT_TEXT}" to id ${IMG_ID}`);
+    const shown = waitForEvent(EVENT_NAME_CHANGE, IMG_ID);
+    await invokeSetAttribute(browser, IMG_ID, "alt", ALT_TEXT);
+    await shown;
+    tree = {
+      role: ROLE_GRAPHIC,
+      name: ALT_TEXT,
+      children: [],
+    };
+    testAccessibleTree(acc, tree);
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+// Verify that removing alt text removes the graphic accessible.
+addAccessibleTask(
+  `${ALT_TEXT}`,
+  async function (browser, accDoc) {
+    // Test initial state; the img has alt text so it should be in the tree.
+    let acc = findAccessibleChildByID(accDoc, IMG_ID);
+    let tree = {
+      role: ROLE_GRAPHIC,
+      name: ALT_TEXT,
+      children: [],
+    };
+    testAccessibleTree(acc, tree);
+
+    // Set the alt text empty. The graphic should have been removed from the tree.
+    info(`Setting empty alt text for img id ${IMG_ID}`);
+    const hidden = waitForEvent(EVENT_HIDE, acc);
+    await invokeContentTask(browser, [IMG_ID, "alt", ""], (id, attr, value) => {
+      let elm = content.document.getElementById(id);
+      elm.setAttribute(attr, value);
+    });
+    await hidden;
+    acc = findAccessibleChildByID(accDoc, IMG_ID);
+    ok(!acc, "Image has no Accessible");
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+// Verify that the presence of an aria-label creates an accessible, even if
+// there is no alt text.
+addAccessibleTask(
+  ``,
+  async function (browser, accDoc) {
+    // Test initial state; the img has empty alt text, but it does have an
+    // aria-label, so it should be in the tree.
+    const acc = findAccessibleChildByID(accDoc, IMG_ID);
+    let tree = {
+      role: ROLE_GRAPHIC,
+      name: ARIA_LABEL,
+      children: [],
+    };
+    testAccessibleTree(acc, tree);
+
+    // Add the alt text. The graphic should still be in the tree.
+    info(`Adding alt text "${ALT_TEXT}" to img id '${IMG_ID}'`);
+    await invokeSetAttribute(browser, IMG_ID, "alt", ALT_TEXT);
+    tree = {
+      role: ROLE_GRAPHIC,
+      name: ARIA_LABEL,
+      children: [],
+    };
+    testAccessibleTree(acc, tree);
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+// Verify that the presence of a click listener results in the graphic
+// accessible's presence in the tree.
+addAccessibleTask(
+  ``,
+  async function (browser, accDoc) {
+    // Add a click listener to the img element.
+    info(`Adding click listener to img id '${IMG_ID}'`);
+    const shown = waitForEvent(EVENT_SHOW, IMG_ID);
+    await invokeContentTask(browser, [IMG_ID], id => {
+      content.document.getElementById(id).addEventListener("click", () => {});
+    });
+    await shown;
+
+    // Test initial state; the img has empty alt text, but it does have a click
+    // listener, so it should be in the tree.
+    let acc = findAccessibleChildByID(accDoc, IMG_ID);
+    let tree = {
+      role: ROLE_GRAPHIC,
+      name: null,
+      children: [],
+    };
+    testAccessibleTree(acc, tree);
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+// Verify that the presentation role prevents creation of the graphic accessible.
+addAccessibleTask(
+  ``,
+  async function (browser, accDoc) {
+    // Test initial state; the img is presentational and should not be in the tree.
+    const acc = findAccessibleChildByID(accDoc, IMG_ID);
+    ok(!acc, "Image has no Accessible");
+
+    // Add some alt text. There should still be no accessible for the img in the tree.
+    info(`Adding alt attribute with text "${ALT_TEXT}" to id ${IMG_ID}`);
+    await invokeSetAttribute(browser, IMG_ID, "alt", ALT_TEXT);
+    ok(!acc, "Image has no Accessible");
+
+    // Remove the presentation role. The accessible should be created.
+    info(`Removing presentation role from img id ${IMG_ID}`);
+    const shown = waitForEvent(EVENT_SHOW, IMG_ID);
+    await invokeSetAttribute(browser, IMG_ID, "role", "");
+    await shown;
+    let tree = {
+      role: ROLE_GRAPHIC,
+      name: ALT_TEXT,
+      children: [],
+    };
+    testAccessibleTree(acc, tree);
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+// Verify that setting empty alt text on a hidden image does not crash.
+// See Bug 1799208 for more info.
+addAccessibleTask(
+  ``,
+  async function (browser, accDoc) {
+    // Test initial state; should be no accessible since img is hidden.
+    const acc = findAccessibleChildByID(accDoc, IMG_ID);
+    ok(!acc, "Image has no Accessible");
+
+    // Add empty alt text. We shouldn't crash.
+    info(`Adding empty alt text "" to img id '${IMG_ID}'`);
+    await invokeContentTask(browser, [IMG_ID, "alt", ""], (id, attr, value) => {
+      let elm = content.document.getElementById(id);
+      elm.setAttribute(attr, value);
+    });
+    ok(true, "Setting empty alt text on a hidden image did not crash");
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_imagemap.js b/accessible/tests/browser/e10s/browser_treeupdate_imagemap.js
new file mode 100644
index 0000000000..82fbd3427e
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_imagemap.js
@@ -0,0 +1,190 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+async function testImageMap(browser, accDoc) {
+  const id = "imgmap";
+  const acc = findAccessibleChildByID(accDoc, id);
+
+  /* ================= Initial tree test ==================================== */
+  let tree = {
+    IMAGE_MAP: [{ role: ROLE_LINK, name: "b", children: [] }],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================= Insert area ========================================== */
+  let onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeContentTask(browser, [], () => {
+    let areaElm = content.document.createElement("area");
+    let mapNode = content.document.getElementById("map");
+    areaElm.setAttribute(
+      "href",
+      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+      "http://www.bbc.co.uk/radio4/atoz/index.shtml#a"
+    );
+    areaElm.setAttribute("coords", "0,0,13,14");
+    areaElm.setAttribute("alt", "a");
+    areaElm.setAttribute("shape", "rect");
+    mapNode.insertBefore(areaElm, mapNode.firstChild);
+  });
+  await onReorder;
+
+  tree = {
+    IMAGE_MAP: [
+      { role: ROLE_LINK, name: "a", children: [] },
+      { role: ROLE_LINK, name: "b", children: [] },
+    ],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================= Append area ========================================== */
+  onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeContentTask(browser, [], () => {
+    let areaElm = content.document.createElement("area");
+    let mapNode = content.document.getElementById("map");
+    areaElm.setAttribute(
+      "href",
+      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+      "http://www.bbc.co.uk/radio4/atoz/index.shtml#c"
+    );
+    areaElm.setAttribute("coords", "34,0,47,14");
+    areaElm.setAttribute("alt", "c");
+    areaElm.setAttribute("shape", "rect");
+    mapNode.appendChild(areaElm);
+  });
+  await onReorder;
+
+  tree = {
+    IMAGE_MAP: [
+      { role: ROLE_LINK, name: "a", children: [] },
+      { role: ROLE_LINK, name: "b", children: [] },
+      { role: ROLE_LINK, name: "c", children: [] },
+    ],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================= Remove area ========================================== */
+  onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeContentTask(browser, [], () => {
+    let mapNode = content.document.getElementById("map");
+    mapNode.removeChild(mapNode.firstElementChild);
+  });
+  await onReorder;
+
+  tree = {
+    IMAGE_MAP: [
+      { role: ROLE_LINK, name: "b", children: [] },
+      { role: ROLE_LINK, name: "c", children: [] },
+    ],
+  };
+  testAccessibleTree(acc, tree);
+}
+
+async function testContainer(browser) {
+  const id = "container";
+  /* ================= Remove name on map =================================== */
+  let onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeSetAttribute(browser, "map", "name");
+  let event = await onReorder;
+  const acc = event.accessible;
+
+  let tree = {
+    SECTION: [{ GRAPHIC: [] }],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================= Restore name on map ================================== */
+  onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeSetAttribute(browser, "map", "name", "atoz_map");
+  // XXX: force repainting of the image (see bug 745788 for details).
+  await invokeContentTask(browser, [], () => {
+    const { ContentTaskUtils } = ChromeUtils.importESModule(
+      "resource://testing-common/ContentTaskUtils.sys.mjs"
+    );
+    const EventUtils = ContentTaskUtils.getEventUtils(content);
+    EventUtils.synthesizeMouse(
+      content.document.getElementById("imgmap"),
+      10,
+      10,
+      { type: "mousemove" },
+      content
+    );
+  });
+  await onReorder;
+
+  tree = {
+    SECTION: [
+      {
+        IMAGE_MAP: [{ LINK: [] }, { LINK: [] }],
+      },
+    ],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================= Remove map =========================================== */
+  onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeContentTask(browser, [], () => {
+    let mapNode = content.document.getElementById("map");
+    mapNode.remove();
+  });
+  await onReorder;
+
+  tree = {
+    SECTION: [{ GRAPHIC: [] }],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================= Insert map =========================================== */
+  onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeContentTask(browser, [id], contentId => {
+    let map = content.document.createElement("map");
+    let area = content.document.createElement("area");
+
+    map.setAttribute("name", "atoz_map");
+    map.setAttribute("id", "map");
+
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    area.setAttribute("href", "http://www.bbc.co.uk/radio4/atoz/index.shtml#b");
+    area.setAttribute("coords", "17,0,30,14");
+    area.setAttribute("alt", "b");
+    area.setAttribute("shape", "rect");
+
+    map.appendChild(area);
+    content.document.getElementById(contentId).appendChild(map);
+  });
+  await onReorder;
+
+  tree = {
+    SECTION: [
+      {
+        IMAGE_MAP: [{ LINK: [] }],
+      },
+    ],
+  };
+  testAccessibleTree(acc, tree);
+
+  /* ================= Hide image map ======================================= */
+  onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeSetStyle(browser, "imgmap", "display", "none");
+  await onReorder;
+
+  tree = {
+    SECTION: [],
+  };
+  testAccessibleTree(acc, tree);
+}
+
+addAccessibleTask(
+  "e10s/doc_treeupdate_imagemap.html",
+  async function (browser, accDoc) {
+    await waitForImageMap(browser, accDoc);
+    await testImageMap(browser, accDoc);
+    await testContainer(browser);
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_list.js b/accessible/tests/browser/e10s/browser_treeupdate_list.js
new file mode 100644
index 0000000000..2ca14d5572
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_list.js
@@ -0,0 +1,52 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+async function setDisplayAndWaitForReorder(browser, value) {
+  let onReorder = waitForEvent(EVENT_REORDER, "ul");
+  await invokeSetStyle(browser, "li", "display", value);
+  return onReorder;
+}
+
+addAccessibleTask(
+  `
+  
      
+    
    • item1
      • 
+  
    `,
+  async function (browser, accDoc) {
+    let li = findAccessibleChildByID(accDoc, "li");
+    let bullet = li.firstChild;
+    let accTree = {
+      role: ROLE_LISTITEM,
+      children: [
+        {
+          role: ROLE_LISTITEM_MARKER,
+          children: [],
+        },
+        {
+          role: ROLE_TEXT_LEAF,
+          children: [],
+        },
+      ],
+    };
+    testAccessibleTree(li, accTree);
+
+    await setDisplayAndWaitForReorder(browser, "none");
+
+    ok(isDefunct(li), "Check that li is defunct.");
+    ok(isDefunct(bullet), "Check that bullet is defunct.");
+
+    let event = await setDisplayAndWaitForReorder(browser, "list-item");
+
+    testAccessibleTree(
+      findAccessibleChildByID(event.accessible, "li"),
+      accTree
+    );
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_list_editabledoc.js b/accessible/tests/browser/e10s/browser_treeupdate_list_editabledoc.js
new file mode 100644
index 0000000000..dd678d93fa
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_list_editabledoc.js
@@ -0,0 +1,48 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  '
      ',
+  async function (browser, accDoc) {
+    let list = findAccessibleChildByID(accDoc, "list");
+
+    testAccessibleTree(list, {
+      role: ROLE_LIST,
+      children: [],
+    });
+
+    await invokeSetAttribute(
+      browser,
+      currentContentDoc(),
+      "contentEditable",
+      "true"
+    );
+    let onReorder = waitForEvent(EVENT_REORDER, "list");
+    await invokeContentTask(browser, [], () => {
+      let li = content.document.createElement("li");
+      li.textContent = "item";
+      content.document.getElementById("list").appendChild(li);
+    });
+    await onReorder;
+
+    testAccessibleTree(list, {
+      role: ROLE_LIST,
+      children: [
+        {
+          role: ROLE_LISTITEM,
+          children: [
+            { role: ROLE_LISTITEM_MARKER, name: "1. ", children: [] },
+            { role: ROLE_TEXT_LEAF, children: [] },
+          ],
+        },
+      ],
+    });
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_listener.js b/accessible/tests/browser/e10s/browser_treeupdate_listener.js
new file mode 100644
index 0000000000..735f7871af
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_listener.js
@@ -0,0 +1,38 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  '',
+  async function (browser, accDoc) {
+    is(
+      findAccessibleChildByID(accDoc, "parent"),
+      null,
+      "Check that parent is not accessible."
+    );
+    is(
+      findAccessibleChildByID(accDoc, "child"),
+      null,
+      "Check that child is not accessible."
+    );
+
+    let onReorder = waitForEvent(EVENT_REORDER, matchContentDoc);
+    // Add an event listener to parent.
+    await invokeContentTask(browser, [], () => {
+      content.window.dummyListener = () => {};
+      content.document
+        .getElementById("parent")
+        .addEventListener("click", content.window.dummyListener);
+    });
+    await onReorder;
+
+    let tree = { TEXT: [] };
+    testAccessibleTree(findAccessibleChildByID(accDoc, "parent"), tree);
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_move.js b/accessible/tests/browser/e10s/browser_treeupdate_move.js
new file mode 100644
index 0000000000..8ed6188ef3
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_move.js
@@ -0,0 +1,84 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+/**
+ * Test moving Accessibles:
+ * 1. A moved Accessible keeps the same Accessible.
+ * 2. If the moved Accessible is focused, it remains focused.
+ * 3. A child of the moved Accessible also keeps the same Accessible.
+ * 4. A child removed at the same time as the move gets shut down.
+ */
+addAccessibleTask(
+  `
+
+  `,
+  async function (browser, docAcc) {
+    const textbox = findAccessibleChildByID(docAcc, "textbox");
+    const heading = findAccessibleChildByID(docAcc, "heading");
+    const para = findAccessibleChildByID(docAcc, "para");
+    const iframe = findAccessibleChildByID(docAcc, "iframe");
+    const iframeDoc = iframe.firstChild;
+    ok(iframeDoc, "iframe contains a document");
+
+    let focused = waitForEvent(EVENT_FOCUS, textbox);
+    textbox.takeFocus();
+    await focused;
+    testStates(textbox, STATE_FOCUSED, 0, 0, EXT_STATE_DEFUNCT);
+
+    let reordered = waitForEvent(EVENT_REORDER, docAcc);
+    await invokeContentTask(browser, [], () => {
+      // scrollable wasn't in the a11y tree, but this will force it to be created.
+      // textbox will be moved inside it.
+      content.document.getElementById("scrollable").style.overflow = "scroll";
+      content.document.getElementById("heading").remove();
+    });
+    await reordered;
+    // Despite the move, ensure textbox is still alive and is focused.
+    testStates(textbox, STATE_FOCUSED, 0, 0, EXT_STATE_DEFUNCT);
+    // Ensure para (a child of textbox) is also still alive.
+    ok(!isDefunct(para), "para is alive");
+    // heading was a child of textbox, but was removed when textbox
+    // was moved. Ensure it is dead.
+    ok(isDefunct(heading), "heading is dead");
+    // Ensure the iframe and its embedded document are alive.
+    ok(!isDefunct(iframe), "iframe is alive");
+    ok(!isDefunct(iframeDoc), "iframeDoc is alive");
+  },
+  { chrome: true, topLevel: true, iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test that moving a subtree containing an iframe doesn't cause assertions or
+ * crashes. Note that aria-owns moves Accessibles even if it is set before load.
+ */
+addAccessibleTask(
+  `
+
      
+  
+  
      
+
      
+  `,
+  async function (browser, docAcc) {
+    const container = findAccessibleChildByID(docAcc, "container");
+    testAccessibleTree(container, {
+      SECTION: [{ SECTION: [{ INTERNAL_FRAME: [{ DOCUMENT: [] }] }] }],
+    });
+  },
+  { topLevel: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_optgroup.js b/accessible/tests/browser/e10s/browser_treeupdate_optgroup.js
new file mode 100644
index 0000000000..ec7eed0919
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_optgroup.js
@@ -0,0 +1,100 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  '',
+  async function (browser, accDoc) {
+    let select = findAccessibleChildByID(accDoc, "select");
+
+    let onEvent = waitForEvent(EVENT_REORDER, "select");
+    // Create a combobox with grouping and 2 standalone options
+    await invokeContentTask(browser, [], () => {
+      let doc = content.document;
+      let contentSelect = doc.getElementById("select");
+      let optGroup = doc.createElement("optgroup");
+
+      for (let i = 0; i < 2; i++) {
+        let opt = doc.createElement("option");
+        opt.value = i;
+        opt.text = "Option: Value " + i;
+        optGroup.appendChild(opt);
+      }
+      contentSelect.add(optGroup, null);
+
+      for (let i = 0; i < 2; i++) {
+        let opt = doc.createElement("option");
+        contentSelect.add(opt, null);
+      }
+      contentSelect.firstChild.firstChild.id = "option1Node";
+    });
+    let event = await onEvent;
+    let option1Node = findAccessibleChildByID(event.accessible, "option1Node");
+
+    let tree = {
+      COMBOBOX: [
+        {
+          COMBOBOX_LIST: [
+            {
+              GROUPING: [{ COMBOBOX_OPTION: [] }, { COMBOBOX_OPTION: [] }],
+            },
+            {
+              COMBOBOX_OPTION: [],
+            },
+            {
+              COMBOBOX_OPTION: [],
+            },
+          ],
+        },
+      ],
+    };
+    testAccessibleTree(select, tree);
+    ok(!isDefunct(option1Node), "option shouldn't be defunct");
+
+    onEvent = waitForEvent(EVENT_REORDER, "select");
+    // Remove grouping from combobox
+    await invokeContentTask(browser, [], () => {
+      let contentSelect = content.document.getElementById("select");
+      contentSelect.firstChild.remove();
+    });
+    await onEvent;
+
+    tree = {
+      COMBOBOX: [
+        {
+          COMBOBOX_LIST: [{ COMBOBOX_OPTION: [] }, { COMBOBOX_OPTION: [] }],
+        },
+      ],
+    };
+    testAccessibleTree(select, tree);
+    ok(
+      isDefunct(option1Node),
+      "removed option shouldn't be accessible anymore!"
+    );
+
+    onEvent = waitForEvent(EVENT_REORDER, "select");
+    // Remove all options from combobox
+    await invokeContentTask(browser, [], () => {
+      let contentSelect = content.document.getElementById("select");
+      while (contentSelect.length) {
+        contentSelect.remove(0);
+      }
+    });
+    await onEvent;
+
+    tree = {
+      COMBOBOX: [
+        {
+          COMBOBOX_LIST: [],
+        },
+      ],
+    };
+    testAccessibleTree(select, tree);
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_removal.js b/accessible/tests/browser/e10s/browser_treeupdate_removal.js
new file mode 100644
index 0000000000..6b5246f0bf
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_removal.js
@@ -0,0 +1,58 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  "e10s/doc_treeupdate_removal.xhtml",
+  async function (browser, accDoc) {
+    ok(
+      isAccessible(findAccessibleChildByID(accDoc, "the_table")),
+      "table should be accessible"
+    );
+
+    // Move the_table element into hidden subtree.
+    let onReorder = waitForEvent(EVENT_REORDER, matchContentDoc);
+    await invokeContentTask(browser, [], () => {
+      content.document
+        .getElementById("the_displaynone")
+        .appendChild(content.document.getElementById("the_table"));
+    });
+    await onReorder;
+
+    ok(
+      !isAccessible(findAccessibleChildByID(accDoc, "the_table")),
+      "table in display none tree shouldn't be accessible"
+    );
+    ok(
+      !isAccessible(findAccessibleChildByID(accDoc, "the_row")),
+      "row shouldn't be accessible"
+    );
+
+    // Remove the_row element (since it did not have accessible, no event needed).
+    await invokeContentTask(browser, [], () => {
+      content.document.body.removeChild(
+        content.document.getElementById("the_row")
+      );
+    });
+
+    // make sure no accessibles have stuck around.
+    ok(
+      !isAccessible(findAccessibleChildByID(accDoc, "the_row")),
+      "row shouldn't be accessible"
+    );
+    ok(
+      !isAccessible(findAccessibleChildByID(accDoc, "the_table")),
+      "table shouldn't be accessible"
+    );
+    ok(
+      !isAccessible(findAccessibleChildByID(accDoc, "the_displayNone")),
+      "display none things shouldn't be accessible"
+    );
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_select_dropdown.js b/accessible/tests/browser/e10s/browser_treeupdate_select_dropdown.js
new file mode 100644
index 0000000000..a82fc4c04d
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_select_dropdown.js
@@ -0,0 +1,73 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+const snippet = `
+
+`;
+
+addAccessibleTask(
+  snippet,
+  async function (browser, accDoc) {
+    await invokeFocus(browser, "select");
+    // Expand the select. A dropdown item should get focus.
+    // Note that the dropdown is rendered in the parent process.
+    let focused = waitForEvent(
+      EVENT_FOCUS,
+      event => event.accessible.role == ROLE_COMBOBOX_OPTION,
+      "Dropdown item focused after select expanded"
+    );
+    await invokeContentTask(browser, [], () => {
+      const { ContentTaskUtils } = ChromeUtils.importESModule(
+        "resource://testing-common/ContentTaskUtils.sys.mjs"
+      );
+      const EventUtils = ContentTaskUtils.getEventUtils(content);
+      EventUtils.synthesizeKey("VK_DOWN", { altKey: true }, content);
+    });
+    info("Waiting for parent focus");
+    let event = await focused;
+    let dropdown = event.accessible.parent;
+
+    let selectedOptionChildren = [];
+    if (MAC) {
+      // Checkmark is part of the Mac menu styling.
+      selectedOptionChildren = [{ STATICTEXT: [] }];
+    }
+    let tree = {
+      COMBOBOX_LIST: [
+        { COMBOBOX_OPTION: selectedOptionChildren },
+        { GROUPING: [{ COMBOBOX_OPTION: [] }, { COMBOBOX_OPTION: [] }] },
+        { GROUPING: [{ COMBOBOX_OPTION: [] }, { COMBOBOX_OPTION: [] }] },
+        { COMBOBOX_OPTION: [] },
+      ],
+    };
+    testAccessibleTree(dropdown, tree);
+
+    // Collapse the select. Focus should return to the select.
+    focused = waitForEvent(
+      EVENT_FOCUS,
+      "select",
+      "select focused after collapsed"
+    );
+    EventUtils.synthesizeKey("VK_ESCAPE", {}, window);
+    info("Waiting for child focus");
+    await focused;
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_table.js b/accessible/tests/browser/e10s/browser_treeupdate_table.js
new file mode 100644
index 0000000000..c188a06044
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_table.js
@@ -0,0 +1,48 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  `
+  
+    
+      
+      
+    
+  
      cell1cell2
      `,
+  async function (browser, accDoc) {
+    let table = findAccessibleChildByID(accDoc, "table");
+
+    let tree = {
+      TABLE: [
+        { ROW: [{ CELL: [{ TEXT_LEAF: [] }] }, { CELL: [{ TEXT_LEAF: [] }] }] },
+      ],
+    };
+    testAccessibleTree(table, tree);
+
+    let onReorder = waitForEvent(EVENT_REORDER, "table");
+    await invokeContentTask(browser, [], () => {
+      // append a caption, it should appear as a first element in the
+      // accessible tree.
+      let doc = content.document;
+      let caption = doc.createElement("caption");
+      caption.textContent = "table caption";
+      doc.getElementById("table").appendChild(caption);
+    });
+    await onReorder;
+
+    tree = {
+      TABLE: [
+        { CAPTION: [{ TEXT_LEAF: [] }] },
+        { ROW: [{ CELL: [{ TEXT_LEAF: [] }] }, { CELL: [{ TEXT_LEAF: [] }] }] },
+      ],
+    };
+    testAccessibleTree(table, tree);
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_textleaf.js b/accessible/tests/browser/e10s/browser_treeupdate_textleaf.js
new file mode 100644
index 0000000000..0c617e7026
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_textleaf.js
@@ -0,0 +1,38 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+async function removeTextData(browser, accessible, id, role) {
+  let tree = {
+    role,
+    children: [{ role: ROLE_TEXT_LEAF, name: "text" }],
+  };
+  testAccessibleTree(accessible, tree);
+
+  let onReorder = waitForEvent(EVENT_REORDER, id);
+  await invokeContentTask(browser, [id], contentId => {
+    content.document.getElementById(contentId).firstChild.textContent = "";
+  });
+  await onReorder;
+
+  tree = { role, children: [] };
+  testAccessibleTree(accessible, tree);
+}
+
+addAccessibleTask(
+  `
+  
      text
      
+  
      text
      `,
+  async function (browser, accDoc) {
+    let p = findAccessibleChildByID(accDoc, "p");
+    let pre = findAccessibleChildByID(accDoc, "pre");
+    await removeTextData(browser, p, "p", ROLE_PARAGRAPH);
+    await removeTextData(browser, pre, "pre", ROLE_TEXT_CONTAINER);
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_visibility.js b/accessible/tests/browser/e10s/browser_treeupdate_visibility.js
new file mode 100644
index 0000000000..636a00e210
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_visibility.js
@@ -0,0 +1,342 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+async function testTreeOnHide(browser, accDoc, containerID, id, before, after) {
+  let acc = findAccessibleChildByID(accDoc, containerID);
+  testAccessibleTree(acc, before);
+
+  let onReorder = waitForEvent(EVENT_REORDER, containerID);
+  await invokeSetStyle(browser, id, "visibility", "hidden");
+  await onReorder;
+
+  testAccessibleTree(acc, after);
+}
+
+async function test3(browser, accessible) {
+  let tree = {
+    SECTION: [
+      // container
+      {
+        SECTION: [
+          // parent
+          {
+            SECTION: [
+              // child
+              { TEXT_LEAF: [] },
+            ],
+          },
+        ],
+      },
+      {
+        SECTION: [
+          // parent2
+          {
+            SECTION: [
+              // child2
+              { TEXT_LEAF: [] },
+            ],
+          },
+        ],
+      },
+    ],
+  };
+  testAccessibleTree(accessible, tree);
+
+  let onReorder = waitForEvent(EVENT_REORDER, "t3_container");
+  await invokeContentTask(browser, [], () => {
+    let doc = content.document;
+    doc.getElementById("t3_container").style.color = "red";
+    doc.getElementById("t3_parent").style.visibility = "hidden";
+    doc.getElementById("t3_parent2").style.visibility = "hidden";
+  });
+  await onReorder;
+
+  tree = {
+    SECTION: [
+      // container
+      {
+        SECTION: [
+          // child
+          { TEXT_LEAF: [] },
+        ],
+      },
+      {
+        SECTION: [
+          // child2
+          { TEXT_LEAF: [] },
+        ],
+      },
+    ],
+  };
+  testAccessibleTree(accessible, tree);
+}
+
+async function test4(browser, accessible) {
+  let tree = {
+    SECTION: [{ TABLE: [{ ROW: [{ CELL: [] }] }] }],
+  };
+  testAccessibleTree(accessible, tree);
+
+  let onReorder = waitForEvent(EVENT_REORDER, "t4_parent");
+  await invokeContentTask(browser, [], () => {
+    let doc = content.document;
+    doc.getElementById("t4_container").style.color = "red";
+    doc.getElementById("t4_child").style.visibility = "visible";
+  });
+  await onReorder;
+
+  tree = {
+    SECTION: [
+      {
+        TABLE: [
+          {
+            ROW: [
+              {
+                CELL: [
+                  {
+                    SECTION: [
+                      {
+                        TEXT_LEAF: [],
+                      },
+                    ],
+                  },
+                ],
+              },
+            ],
+          },
+        ],
+      },
+    ],
+  };
+  testAccessibleTree(accessible, tree);
+}
+
+addAccessibleTask(
+  "e10s/doc_treeupdate_visibility.html",
+  async function (browser, accDoc) {
+    let t3Container = findAccessibleChildByID(accDoc, "t3_container");
+    let t4Container = findAccessibleChildByID(accDoc, "t4_container");
+
+    await testTreeOnHide(
+      browser,
+      accDoc,
+      "t1_container",
+      "t1_parent",
+      {
+        SECTION: [
+          {
+            SECTION: [
+              {
+                SECTION: [{ TEXT_LEAF: [] }],
+              },
+            ],
+          },
+        ],
+      },
+      {
+        SECTION: [
+          {
+            SECTION: [{ TEXT_LEAF: [] }],
+          },
+        ],
+      }
+    );
+
+    await testTreeOnHide(
+      browser,
+      accDoc,
+      "t2_container",
+      "t2_grandparent",
+      {
+        SECTION: [
+          {
+            // container
+            SECTION: [
+              {
+                // grand parent
+                SECTION: [
+                  {
+                    SECTION: [
+                      {
+                        // child
+                        TEXT_LEAF: [],
+                      },
+                    ],
+                  },
+                  {
+                    SECTION: [
+                      {
+                        // child2
+                        TEXT_LEAF: [],
+                      },
+                    ],
+                  },
+                ],
+              },
+            ],
+          },
+        ],
+      },
+      {
+        SECTION: [
+          {
+            // container
+            SECTION: [
+              {
+                // child
+                TEXT_LEAF: [],
+              },
+            ],
+          },
+          {
+            SECTION: [
+              {
+                // child2
+                TEXT_LEAF: [],
+              },
+            ],
+          },
+        ],
+      }
+    );
+
+    await test3(browser, t3Container);
+    await test4(browser, t4Container);
+
+    await testTreeOnHide(
+      browser,
+      accDoc,
+      "t5_container",
+      "t5_subcontainer",
+      {
+        SECTION: [
+          {
+            // container
+            SECTION: [
+              {
+                // subcontainer
+                TABLE: [
+                  {
+                    ROW: [
+                      {
+                        CELL: [
+                          {
+                            SECTION: [
+                              {
+                                // child
+                                TEXT_LEAF: [],
+                              },
+                            ],
+                          },
+                        ],
+                      },
+                    ],
+                  },
+                ],
+              },
+            ],
+          },
+        ],
+      },
+      {
+        SECTION: [
+          {
+            // container
+            SECTION: [
+              {
+                // child
+                TEXT_LEAF: [],
+              },
+            ],
+          },
+        ],
+      }
+    );
+
+    await testTreeOnHide(
+      browser,
+      accDoc,
+      "t6_container",
+      "t6_subcontainer",
+      {
+        SECTION: [
+          {
+            // container
+            SECTION: [
+              {
+                // subcontainer
+                TABLE: [
+                  {
+                    ROW: [
+                      {
+                        CELL: [
+                          {
+                            TABLE: [
+                              {
+                                // nested table
+                                ROW: [
+                                  {
+                                    CELL: [
+                                      {
+                                        SECTION: [
+                                          {
+                                            // child
+                                            TEXT_LEAF: [],
+                                          },
+                                        ],
+                                      },
+                                    ],
+                                  },
+                                ],
+                              },
+                            ],
+                          },
+                        ],
+                      },
+                    ],
+                  },
+                ],
+              },
+              {
+                SECTION: [
+                  {
+                    // child2
+                    TEXT_LEAF: [],
+                  },
+                ],
+              },
+            ],
+          },
+        ],
+      },
+      {
+        SECTION: [
+          {
+            // container
+            SECTION: [
+              {
+                // child
+                TEXT_LEAF: [],
+              },
+            ],
+          },
+          {
+            SECTION: [
+              {
+                // child2
+                TEXT_LEAF: [],
+              },
+            ],
+          },
+        ],
+      }
+    );
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/browser_treeupdate_whitespace.js b/accessible/tests/browser/e10s/browser_treeupdate_whitespace.js
new file mode 100644
index 0000000000..78ab47cd51
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_treeupdate_whitespace.js
@@ -0,0 +1,69 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  "e10s/doc_treeupdate_whitespace.html",
+  async function (browser, accDoc) {
+    let container1 = findAccessibleChildByID(accDoc, "container1");
+    let container2Parent = findAccessibleChildByID(accDoc, "container2-parent");
+
+    let tree = {
+      SECTION: [
+        { GRAPHIC: [] },
+        { TEXT_LEAF: [] },
+        { GRAPHIC: [] },
+        { TEXT_LEAF: [] },
+        { GRAPHIC: [] },
+      ],
+    };
+    testAccessibleTree(container1, tree);
+
+    let onReorder = waitForEvent(EVENT_REORDER, "container1");
+    // Remove img1 from container1
+    await invokeContentTask(browser, [], () => {
+      let doc = content.document;
+      doc.getElementById("container1").removeChild(doc.getElementById("img1"));
+    });
+    await onReorder;
+
+    tree = {
+      SECTION: [{ GRAPHIC: [] }, { TEXT_LEAF: [] }, { GRAPHIC: [] }],
+    };
+    testAccessibleTree(container1, tree);
+
+    tree = {
+      SECTION: [{ LINK: [] }, { LINK: [{ GRAPHIC: [] }] }],
+    };
+    testAccessibleTree(container2Parent, tree);
+
+    onReorder = waitForEvent(EVENT_REORDER, "container2-parent");
+    // Append an img with valid src to container2
+    await invokeContentTask(browser, [], () => {
+      let doc = content.document;
+      let img = doc.createElement("img");
+      img.setAttribute(
+        "src",
+        // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+        "http://example.com/a11y/accessible/tests/mochitest/moz.png"
+      );
+      doc.getElementById("container2").appendChild(img);
+    });
+    await onReorder;
+
+    tree = {
+      SECTION: [
+        { LINK: [{ GRAPHIC: [] }] },
+        { TEXT_LEAF: [] },
+        { LINK: [{ GRAPHIC: [] }] },
+      ],
+    };
+    testAccessibleTree(container2Parent, tree);
+  },
+  { iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/e10s/doc_treeupdate_ariadialog.html b/accessible/tests/browser/e10s/doc_treeupdate_ariadialog.html
new file mode 100644
index 0000000000..089391523d
--- /dev/null
+++ b/accessible/tests/browser/e10s/doc_treeupdate_ariadialog.html
@@ -0,0 +1,23 @@
+
+  
+    
+    Tree Update ARIA Dialog Test
+  
+  
+    
+  
+
diff --git a/accessible/tests/browser/e10s/doc_treeupdate_ariaowns.html b/accessible/tests/browser/e10s/doc_treeupdate_ariaowns.html
new file mode 100644
index 0000000000..38b5c333a1
--- /dev/null
+++ b/accessible/tests/browser/e10s/doc_treeupdate_ariaowns.html
@@ -0,0 +1,44 @@
+
+  
+    
+    Tree Update ARIA Owns Test
+  
+  
+    
      
+      
      
+      
+    
      
+    
      
+    
      
+
+    
      
+    
      
+      
      
+    
      
+
+    
      
+    
+    
      
+
+    
      
+    
      
+      
+      
+    
      
+
+    
      
+      
      
+      
+      
+    
      
+
+    
      
+      hey
+    
      
+    
      
+  
+
diff --git a/accessible/tests/browser/e10s/doc_treeupdate_imagemap.html b/accessible/tests/browser/e10s/doc_treeupdate_imagemap.html
new file mode 100644
index 0000000000..4dd230fc28
--- /dev/null
+++ b/accessible/tests/browser/e10s/doc_treeupdate_imagemap.html
@@ -0,0 +1,21 @@
+
+  
+    
+    Tree Update Imagemap Test
+  
+  
+    
+      b
+    
+
+    
      
+      
      
+  
+
diff --git a/accessible/tests/browser/e10s/doc_treeupdate_removal.xhtml b/accessible/tests/browser/e10s/doc_treeupdate_removal.xhtml
new file mode 100644
index 0000000000..9c59fb9d11
--- /dev/null
+++ b/accessible/tests/browser/e10s/doc_treeupdate_removal.xhtml
@@ -0,0 +1,11 @@
+
+  
+    
+    Tree Update Removal Test
+  
+  
+    
+    
      
+    
+  
+
diff --git a/accessible/tests/browser/e10s/doc_treeupdate_visibility.html b/accessible/tests/browser/e10s/doc_treeupdate_visibility.html
new file mode 100644
index 0000000000..00213b2b70
--- /dev/null
+++ b/accessible/tests/browser/e10s/doc_treeupdate_visibility.html
@@ -0,0 +1,78 @@
+
+  
+    
+    Tree Update Visibility Test
+  
+  
+    
+    
      
+      
      
+        
      text
      
+      
      
+    
      
+
+    
+    
      
+      
      
+        
      
+          
      text
      
+          
      text
      
+        
      
+      
      
+    
      
+
+    
+    
      
+      
      
+        
      text
      
+      
      
+      
      
+        
      text
      
+      
      
+    
      
+
+    
+    
      
+      
+        
+          
+        
+      
      
+            
+          
      
+    
      
+
+    
+    
      
+      
      
+        
+          
+            
+          
+        
      
+              
      text
      
+            
      
+      
      
+    
      
+
+    
+    
      
+      
      
+        
+          
+            
+          
+        
      
+              
+                
+                  
+                
+              
      
+                    
      text
      
+                  
      
+            
      
+        
      text
      
+      
      
+    
      
+  
+
diff --git a/accessible/tests/browser/e10s/doc_treeupdate_whitespace.html b/accessible/tests/browser/e10s/doc_treeupdate_whitespace.html
new file mode 100644
index 0000000000..f17dbbd60e
--- /dev/null
+++ b/accessible/tests/browser/e10s/doc_treeupdate_whitespace.html
@@ -0,0 +1,10 @@
+
+  
+    
+    Whitespace text accessible creation/destruction
+  
+  
+    
              
      
+    
         
      
+  
+
diff --git a/accessible/tests/browser/e10s/fonts/Ahem.sjs b/accessible/tests/browser/e10s/fonts/Ahem.sjs
new file mode 100644
index 0000000000..e801a801ab
--- /dev/null
+++ b/accessible/tests/browser/e10s/fonts/Ahem.sjs
@@ -0,0 +1,241 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/*
+ * A CORS-enabled font resource.
+ */
+
+const FONT_BYTES = atob(
+  "AAEAAAALAIAAAwAwT1MvMnhQSo0AAAE4AAAAYGNtYXAP1hZGAAAFbAAABnJnYXNwABcACQAAMLAA" +
+    "AAAQZ2x5ZkmzdNoAAAvgAAAaZGhlYWTWok4cAAAAvAAAADZoaGVhBwoEFgAAAPQAAAAkaG10eLkg" +
+    "AH0AAAGYAAAD1GxvY2EgdSciAAAmRAAAAextYXhwAPgACQAAARgAAAAgbmFtZX4UjLgAACgwAAAG" +
+    "aHBvc3SN0B2KAAAumAAAAhgAAQAAAAEAQhIXUWdfDzz1AAkD6AAAAACzb19ZAAAAAMAtq0kAAP84" +
+    "A+gDIAAAAAMAAgAAAAAAAAABAAADIP84AAAD6AAAAAAD6AABAAAAAAAAAAAAAAAAAAAA9QABAAAA" +
+    "9QAIAAIAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAID6AGQAAUAAAK8AooAAACPArwCigAAAcUAMgED" +
+    "AAACAAQJAAAAAAAAgAAArxAAIEgAAAAAAAAAAFczQwAAQAAg8AIDIP84AAADIADIIAABEUAAAAAD" +
+    "IAMgAAAAIAAAA+gAfQAAAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAA" +
+    "A+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD" +
+    "6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPo" +
+    "AAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gA" +
+    "AAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAA" +
+    "A+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD" +
+    "6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPo" +
+    "AAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gA" +
+    "AAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAA" +
+    "A+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD" +
+    "6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPo" +
+    "AAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gA" +
+    "AAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAA" +
+    "A+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD" +
+    "6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPo" +
+    "AAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gA" +
+    "AAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAAA+gAAAPoAAAD6AAA" +
+    "A+gAAAPoAAAD6AAAA+gAAAPoAAAAAAADAAAAAwAABEwAAQAAAAAAHAADAAEAAAImAAYCCgAAAAAB" +
+    "AAABAAAAAAAAAAAAAAAAAAAAAQACAAAAAAAAAAIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" +
+    "AAAAAQAAAAAAAwAEAAUABgAHAAgACQAAAAoACwAMAA0ADgAPABAAEQASABMAFAAVABYAFwAYABkA" +
+    "GgAbABwAHQAeAB8AIAAhACIAIwAkACUAJgAnACgAKQAqACsALAAtAC4ALwAwADEAMgAzADQANQA2" +
+    "ADcAOAA5ADoAOwA8AD0APgA/AEAAQQBCAEMARABFAEYARwBIAEkASgBLAEwATQBOAE8AUABRAFIA" +
+    "UwBUAFUAVgBXAFgAWQBaAFsAXABdAF4AXwBgAAAAYQBiAGMAZABlAGYAZwBoAGkAagBrAGwAbQBu" +
+    "AG8AcABxAHIAcwB0AHUAdgB3AHgAeQB6AHsAfAB9AH4AfwCAANsAgQCCAIMAhADdAIUAhgCHAIgA" +
+    "4wCJAIoA6gCLAIwA6ACNAOsA7ACOAI8A5ADmAOUA1ADpAJAAkQDTAJIAkwCUAJUAlgDnANEA7QDS" +
+    "AJcAmADeAAMAmgCbAJwAzgDPANUA1gDYANkAnQCeAJ8A7gCgANAA4gChAOAA4QAAAAAA3ACiANcA" +
+    "2gDfAKMApAClAKYApwCoAKkAqgCrAKwArQAAAK4ArwCwALEAsgCzALQAtQC2ALcAuAC5ALoAuwC8" +
+    "AAQCJgAAAE4AQAAFAA4AJgB+AP8BMQFTAXgBkgLHAskC3QOUA6kDvAPAIBAgFCAaIB4gIiAmIDAg" +
+    "OiBEISIhJiICIgYiDyISIhoiHiIrIkgiYCJlIvIlyvAC//8AAAAgACgAoAExAVIBeAGSAsYCyQLY" +
+    "A5QDqQO8A8AgECATIBggHCAgICYgMCA5IEQhIiEmIgIiBiIPIhEiGSIeIisiSCJgImQi8iXK8AD/" +
+    "///j/+IAAP+B/3z/WP8/AAD97AAA/T79KvzT/RTf/+DCAADgvOC74Ljgr+Cn4J7fwd+t3uLezN7W" +
+    "AAAAAN7K3r7epd6K3ofd+9skEO8AAQAAAAAASgAAAAAAAAAAAQAAAAEAAAAAAAAAAAAAAAAAAP4A" +
+    "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAOwA7gAAAAAAAAAAAAAAAAAAAAAAAACZAJUAggCDAKEAjgC9" +
+    "AIQAigCIAJAAlwCWAMQAhwC1AIEAjQDHAMgAiQCPAIUAogC5AMYAkQCYAMoAyQDLAJQAmgClAKMA" +
+    "mwBhAGIAiwBjAKcAZACkAKYAqwCoAKkAqgC+AGUArgCsAK0AnABmAMUAjACxAK8AsABnAMAAwgCG" +
+    "AGkAaABqAGwAawBtAJIAbgBwAG8AcQByAHQAcwB1AHYAvwB3AHkAeAB6AHwAewCfAJMAfgB9AH8A" +
+    "gADBAMMAoACzALwAtgC3ALgAuwC0ALoAnQCeANcA5gDEAKIA5wAEAiYAAABOAEAABQAOACYAfgD/" +
+    "ATEBUwF4AZICxwLJAt0DlAOpA7wDwCAQIBQgGiAeICIgJiAwIDogRCEiISYiAiIGIg8iEiIaIh4i" +
+    "KyJIImAiZSLyJcrwAv//AAAAIAAoAKABMQFSAXgBkgLGAskC2AOUA6kDvAPAIBAgEyAYIBwgICAm" +
+    "IDAgOSBEISIhJiICIgYiDyIRIhkiHiIrIkgiYCJkIvIlyvAA////4//iAAD/gf98/1j/PwAA/ewA" +
+    "AP0+/Sr80/0U3//gwgAA4Lzgu+C44K/gp+Ce38Hfrd7i3sze1gAAAADeyt6+3qXeit6H3fvbJBDv" +
+    "AAEAAAAAAEoAAAAAAAAAAAEAAAABAAAAAAAAAAAAAAAAAAD+AAAAAAAAAAAAAAAAAAAAAAAAAAAA" +
+    "AADsAO4AAAAAAAAAAAAAAAAAAAAAAAAAmQCVAIIAgwChAI4AvQCEAIoAiACQAJcAlgDEAIcAtQCB" +
+    "AI0AxwDIAIkAjwCFAKIAuQDGAJEAmADKAMkAywCUAJoApQCjAJsAYQBiAIsAYwCnAGQApACmAKsA" +
+    "qACpAKoAvgBlAK4ArACtAJwAZgDFAIwAsQCvALAAZwDAAMIAhgBpAGgAagBsAGsAbQCSAG4AcABv" +
+    "AHEAcgB0AHMAdQB2AL8AdwB5AHgAegB8AHsAnwCTAH4AfQB/AIAAwQDDAKAAswC8ALYAtwC4ALsA" +
+    "tAC6AJ0AngDXAOYAxACiAOcAAAACAH0AAANrAyAAAwAHAAAzESERJSERIX0C7v2PAfT+DAMg/OB9" +
+    "AiYAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgA" +
+    "AAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAA" +
+    "AAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAA" +
+    "AQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAAB" +
+    "AAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEA" +
+    "AP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA" +
+    "/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/" +
+    "OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84" +
+    "A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD" +
+    "6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPo" +
+    "AyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gD" +
+    "IAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMg" +
+    "AAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAA" +
+    "AwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAAD" +
+    "AAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMA" +
+    "ABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAA" +
+    "ESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAAR" +
+    "IREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEh" +
+    "ESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESER" +
+    "IQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREh" +
+    "A+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED" +
+    "6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo" +
+    "/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8" +
+    "GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwY" +
+    "AyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgD" +
+    "IPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg" +
+    "/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8" +
+    "GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwY" +
+    "AAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgA" +
+    "AAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAA" +
+    "AAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAA" +
+    "AQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAAB" +
+    "AAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEA" +
+    "AP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA" +
+    "/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/" +
+    "OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84" +
+    "A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD" +
+    "6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPo" +
+    "AyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AAAAAMAADEhFSED6PwYyAAAAQAA/zgD6AMgAAMA" +
+    "ABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAA" +
+    "ESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAAR" +
+    "IREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEh" +
+    "ESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESER" +
+    "IQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREh" +
+    "A+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED" +
+    "6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo" +
+    "/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8" +
+    "GAMg/BgAAAABAAAAAAPoAyAAAwAAESERIQPo/BgDIPzgAAAAAQAA/zgD6AMgAAMAABEhESED6PwY" +
+    "AyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgD" +
+    "IPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg" +
+    "/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8" +
+    "GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwY" +
+    "AAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgA" +
+    "AAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAA" +
+    "AAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAA" +
+    "AQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAAB" +
+    "AAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEA" +
+    "AP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA" +
+    "/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/" +
+    "OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84" +
+    "A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD" +
+    "6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPo" +
+    "AyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gD" +
+    "IAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMg" +
+    "AAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAA" +
+    "AwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAAD" +
+    "AAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMA" +
+    "ABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAA" +
+    "ESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAAR" +
+    "IREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEh" +
+    "ESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESER" +
+    "IQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREh" +
+    "A+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED" +
+    "6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo" +
+    "/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8" +
+    "GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwY" +
+    "AyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgD" +
+    "IPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg" +
+    "/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8" +
+    "GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwY" +
+    "AAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgA" +
+    "AAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAA" +
+    "AAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAA" +
+    "AQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAAB" +
+    "AAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEA" +
+    "AP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA" +
+    "/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/" +
+    "OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84" +
+    "A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD" +
+    "6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPo" +
+    "AyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gD" +
+    "IAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMg" +
+    "AAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAA" +
+    "AwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAAD" +
+    "AAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMA" +
+    "ABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAA" +
+    "ESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAAR" +
+    "IREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEh" +
+    "ESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESER" +
+    "IQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREh" +
+    "A+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED" +
+    "6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo" +
+    "/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8" +
+    "GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwY" +
+    "AyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgD" +
+    "IPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg" +
+    "/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8" +
+    "GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwY" +
+    "AAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgA" +
+    "AAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAA" +
+    "AAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAA" +
+    "AQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAAB" +
+    "AAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEA" +
+    "AP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA" +
+    "/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/" +
+    "OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84" +
+    "A+gDIAADAAARIREhA+j8GAMg/BgAAAABAAD/OAPoAyAAAwAAESERIQPo/BgDIPwYAAAAAQAA/zgD" +
+    "6AMgAAMAABEhESED6PwYAyD8GAAAAAEAAP84A+gDIAADAAARIREhA+j8GAMg/BgAAAAAABQAFAAU" +
+    "ABQAIgAwAD4ATABaAGgAdgCEAJIAoACuALwAygDYAOYA9AECARABHgEsAToBSAFWAWQBcgGAAY4B" +
+    "nAGqAbgBxgHUAeIB8AH+AgwCGgIoAjYCRAJSAmACbgJ8AooCmAKmArQCwgLQAt4C7AL6AwgDFgMk" +
+    "AzIDQANOA1wDagN4A4YDlAOiA7ADvgPMA9oD6AP2BAQEEgQgBC4EPARKBFgEZARyBIAEjgScBKoE" +
+    "uATGBNQE4gTwBP4FDAUaBSgFNgVEBVIFYAVuBXwFigWYBaYFtAXCBdAF3gXsBfoGCAYWBiQGMgZA" +
+    "Bk4GXAZqBngGhgaUBqIGsAa+BswG2gboBvYHBAcSByAHLgc8B0oHWAdmB3QHggeQB54HrAe6B8gH" +
+    "1gfkB/IIAAgOCBwIKgg4CDgIRghUCGIIcAh+CIwImgioCLYIxAjSCOAI7gj8CQoJGAkmCTQJQglQ" +
+    "CV4JbAl6CYgJlgmkCbIJwAnOCdwJ6gn4CgYKFAoiCjAKPgpMCloKaAp2CoQKkgqgCq4KvArKCtgK" +
+    "5gr0CwILEAseCywLOgtIC1YLZAtyC4ALjgucC6oLuAvGC9QL4gvwC/4MDAwaDCgMNgxEDFIMYAxu" +
+    "DHwMigyYDKYMtAzCDNAM3gzsDPoNCA0WDSQNMgAAABsBSgAAAAAAAAAAAZ4AAAAAAAAAAAABAAgB" +
+    "ngAAAAAAAAACAA4BpgAAAAAAAAADACABtAAAAAAAAAAEAAgB1AAAAAAAAAAFABYB3AAAAAAAAAAG" +
+    "AAgB8gABAAAAAAAAAM8B+gABAAAAAAABAAQCyQABAAAAAAACAAcCzQABAAAAAAADABAC1AABAAAA" +
+    "AAAEAAQC5AABAAAAAAAFAAsC6AABAAAAAAAGAAQC8wABAAAAAAAQAAQC9wABAAAAAAARAAcC+wAB" +
+    "AAAAAAASAAQDAgADAAEECQAAAZ4DBgADAAEECQABAAgEpAADAAEECQACAA4ErAADAAEECQADACAE" +
+    "ugADAAEECQAEAAgE2gADAAEECQAFABYE4gADAAEECQAGAAgE+AADAAEECQAQAAgFAAADAAEECQAR" +
+    "AA4FCAADAAEECQASAAgFFgBNAG8AcwB0ACAAYwBoAGEAcgBhAGMAdABlAHIAcwAgAGEAcgBlACAA" +
+    "dABoAGUAIABlAG0AIABzAHEAdQBhAHIAZQAsACAAZQB4AGMAZQBwAHQAIAAmAEUAQQBjAHUAdABl" +
+    "ACAAYQBuAGQAIAAiAHAAIgAsACAAdwBoAGkAYwBoACAAcwBoAG8AdwAgAGEAcwBjAGUAbgB0AC8A" +
+    "ZABlAHMAYwBlAG4AdAAgAGYAcgBvAG0AIAB0AGgAZQAgAGIAYQBzAGUAbABpAG4AZQAuACAAVQBz" +
+    "AGUAZgB1AGwAIABmAG8AcgAgAHQAZQBzAHQAaQBuAGcAIABjAG8AbQBwAG8AcwBpAHQAaQBvAG4A" +
+    "IABzAHkAcwB0AGUAbQBzAC4AIABQAHIAbwBkAHUAYwBlAGQAIABiAHkAIABUAG8AZABkACAARgBh" +
+    "AGgAcgBuAGUAcgAgAGYAbwByACAAdABoAGUAIABDAFMAUwAgAFMAYQBtAHUAcgBhAGkAJwBzACAA" +
+    "YgByAG8AdwBzAGUAcgAgAHQAZQBzAHQAaQBuAGcALgBBAGgAZQBtAFIAZQBnAHUAbABhAHIAVgBl" +
+    "AHIAcwBpAG8AbgAgADEALgAxACAAQQBoAGUAbQBBAGgAZQBtAFYAZQByAHMAaQBvAG4AIAAxAC4A" +
+    "MQBBAGgAZQBtTW9zdCBjaGFyYWN0ZXJzIGFyZSB0aGUgZW0gc3F1YXJlLCBleGNlcHQgJkVBY3V0" +
+    "ZSBhbmQgInAiLCB3aGljaCBzaG93IGFzY2VudC9kZXNjZW50IGZyb20gdGhlIGJhc2VsaW5lLiBV" +
+    "c2VmdWwgZm9yIHRlc3RpbmcgY29tcG9zaXRpb24gc3lzdGVtcy4gUHJvZHVjZWQgYnkgVG9kZCBG" +
+    "YWhybmVyIGZvciB0aGUgQ1NTIFNhbXVyYWkncyBicm93c2VyIHRlc3RpbmcuQWhlbVJlZ3VsYXJW" +
+    "ZXJzaW9uIDEuMSBBaGVtQWhlbVZlcnNpb24gMS4xQWhlbUFoZW1SZWd1bGFyQWhlbQBNAG8AcwB0" +
+    "ACAAYwBoAGEAcgBhAGMAdABlAHIAcwAgAGEAcgBlACAAdABoAGUAIABlAG0AIABzAHEAdQBhAHIA" +
+    "ZQAsACAAZQB4AGMAZQBwAHQAIAAmAEUAQQBjAHUAdABlACAAYQBuAGQAIAAiAHAAIgAsACAAdwBo" +
+    "AGkAYwBoACAAcwBoAG8AdwAgAGEAcwBjAGUAbgB0AC8AZABlAHMAYwBlAG4AdAAgAGYAcgBvAG0A" +
+    "IAB0AGgAZQAgAGIAYQBzAGUAbABpAG4AZQAuACAAVQBzAGUAZgB1AGwAIABmAG8AcgAgAHQAZQBz" +
+    "AHQAaQBuAGcAIABjAG8AbQBwAG8AcwBpAHQAaQBvAG4AIABzAHkAcwB0AGUAbQBzAC4AIABQAHIA" +
+    "bwBkAHUAYwBlAGQAIABiAHkAIABUAG8AZABkACAARgBhAGgAcgBuAGUAcgAgAGYAbwByACAAdABo" +
+    "AGUAIABDAFMAUwAgAFMAYQBtAHUAcgBhAGkAJwBzACAAYgByAG8AdwBzAGUAcgAgAHQAZQBzAHQA" +
+    "aQBuAGcALgBBAGgAZQBtAFIAZQBnAHUAbABhAHIAVgBlAHIAcwBpAG8AbgAgADEALgAxACAAQQBo" +
+    "AGUAbQBBAGgAZQBtAFYAZQByAHMAaQBvAG4AIAAxAC4AMQBBAGgAZQBtAEEAaABlAG0AUgBlAGcA" +
+    "dQBsAGEAcgBBAGgAZQBtAAIAAAAAAAD/ewAUAAAAAQAAAAAAAAAAAAAAAAAAAAAA9QAAAQIAAgAD" +
+    "AAQABQAGAAcACAAJAAsADAANAA4ADwAQABEAEgATABQAFQAWABcAGAAZABoAGwAcAB0AHgAfACAA" +
+    "IQAiACMAJAAlACYAJwAoACkAKgArACwALQAuAC8AMAAxADIAMwA0ADUANgA3ADgAOQA6ADsAPAA9" +
+    "AD4APwBAAEEAQgBDAEQARQBGAEcASABJAEoASwBMAE0ATgBPAFAAUQBSAFMAVABVAFYAVwBYAFkA" +
+    "WgBbAFwAXQBeAF8AYABhAGIAYwBkAGUAZgBnAGgAaQBqAGsAbABtAG4AbwBwAHEAcgBzAHQAdQB2" +
+    "AHcAeAB5AHoAewB8AH0AfgB/AIAAgQCDAIQAhQCGAIgAiQCKAIsAjQCOAJAAkQCTAJYAlwCdAJ4A" +
+    "oAChAKIAowCkAKkAqgCsAK0ArgCvALYAtwC4ALoAvQDDAMcAyADJAMoAywDMAM0AzgDPANAA0QDT" +
+    "ANQA1QDWANcA2ADZANoA2wDcAN0A3gDfAOAA4QDoAOkA6gDrAOwA7QDuAO8A8ADxAPIA8wD0APUA" +
+    "9gAAAAAAsACxALsApgCoAJ8AmwCyALMAxAC0ALUAxQCCAMIAhwCrAMYAvgC/ALwAjACYAJoAmQCl" +
+    "AJIAnACPAJQAlQCnALkA0gDAAMEBAwACAQQETlVMTAJIVANERUwAAAADAAgAAgAQAAH//wAD"
+);
+
+function handleRequest(request, response) {
+  response.setStatusLine(request.httpVersion, 200, "OK");
+  response.setHeader("Cache-Control", "no-cache", false);
+  response.setHeader("Content-Type", "application/octet-stream", false);
+  response.setHeader("Access-Control-Allow-Origin", "*", false);
+  response.write(FONT_BYTES);
+}
diff --git a/accessible/tests/browser/e10s/head.js b/accessible/tests/browser/e10s/head.js
new file mode 100644
index 0000000000..bdbcb7445f
--- /dev/null
+++ b/accessible/tests/browser/e10s/head.js
@@ -0,0 +1,192 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* exported testCachedRelation, testRelated */
+
+// Load the shared-head file first.
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js",
+  this
+);
+
+// Loading and common.js from accessible/tests/mochitest/ for all tests, as
+// well as promisified-events.js and relations.js.
+/* import-globals-from ../../mochitest/relations.js */
+loadScripts(
+  { name: "common.js", dir: MOCHITESTS_DIR },
+  { name: "promisified-events.js", dir: MOCHITESTS_DIR },
+  { name: "relations.js", dir: MOCHITESTS_DIR }
+);
+
+/**
+ * Test the accessible relation.
+ *
+ * @param identifier          [in] identifier to get an accessible, may be ID
+ *                             attribute or DOM element or accessible object
+ * @param relType             [in] relation type (see constants above)
+ * @param relatedIdentifiers  [in] identifier or array of identifiers of
+ *                             expected related accessibles
+ */
+async function testCachedRelation(identifier, relType, relatedIdentifiers) {
+  const relDescr = getRelationErrorMsg(identifier, relType);
+  const relDescrStart = getRelationErrorMsg(identifier, relType, true);
+  info(`Testing ${relDescr}`);
+
+  if (!relatedIdentifiers) {
+    await untilCacheOk(function () {
+      let r = getRelationByType(identifier, relType);
+      if (r) {
+        info(`Fetched ${r.targetsCount} relations from cache`);
+      } else {
+        info("Could not fetch relations");
+      }
+      return r && !r.targetsCount;
+    }, relDescrStart + " has no targets, as expected");
+    return;
+  }
+
+  const relatedIds =
+    relatedIdentifiers instanceof Array
+      ? relatedIdentifiers
+      : [relatedIdentifiers];
+  await untilCacheOk(function () {
+    let r = getRelationByType(identifier, relType);
+    if (r) {
+      info(
+        `Fetched ${r.targetsCount} relations from cache, looking for ${relatedIds.length}`
+      );
+    } else {
+      info("Could not fetch relations");
+    }
+
+    return r && r.targetsCount == relatedIds.length;
+  }, "Found correct number of expected relations");
+
+  let targets = [];
+  for (let idx = 0; idx < relatedIds.length; idx++) {
+    targets.push(getAccessible(relatedIds[idx]));
+  }
+
+  if (targets.length != relatedIds.length) {
+    return;
+  }
+
+  await untilCacheOk(function () {
+    const relation = getRelationByType(identifier, relType);
+    const actualTargets = relation ? relation.getTargets() : null;
+    if (!actualTargets) {
+      info("Could not fetch relations");
+      return false;
+    }
+
+    // Check if all given related accessibles are targets of obtained relation.
+    for (let idx = 0; idx < targets.length; idx++) {
+      let isFound = false;
+      for (let relatedAcc of actualTargets.enumerate(Ci.nsIAccessible)) {
+        if (targets[idx] == relatedAcc) {
+          isFound = true;
+          break;
+        }
+      }
+
+      if (!isFound) {
+        info(
+          prettyName(relatedIds[idx]) +
+            " could not be found in relation: " +
+            relDescr
+        );
+        return false;
+      }
+    }
+
+    return true;
+  }, "All given related accessibles are targets of fetched relation.");
+
+  await untilCacheOk(function () {
+    const relation = getRelationByType(identifier, relType);
+    const actualTargets = relation ? relation.getTargets() : null;
+    if (!actualTargets) {
+      info("Could not fetch relations");
+      return false;
+    }
+
+    // Check if all obtained targets are given related accessibles.
+    for (let relatedAcc of actualTargets.enumerate(Ci.nsIAccessible)) {
+      let wasFound = false;
+      for (let idx = 0; idx < targets.length; idx++) {
+        if (relatedAcc == targets[idx]) {
+          wasFound = true;
+        }
+      }
+      if (!wasFound) {
+        info(
+          prettyName(relatedAcc) +
+            " was found, but shouldn't be in relation: " +
+            relDescr
+        );
+        return false;
+      }
+    }
+    return true;
+  }, "No unexpected targets found.");
+}
+
+async function testRelated(
+  browser,
+  accDoc,
+  attr,
+  hostRelation,
+  dependantRelation
+) {
+  let host = findAccessibleChildByID(accDoc, "host");
+  let dependant1 = findAccessibleChildByID(accDoc, "dependant1");
+  let dependant2 = findAccessibleChildByID(accDoc, "dependant2");
+
+  /**
+   * Test data has the format of:
+   * {
+   *   desc      {String}   description for better logging
+   *   attrs     {?Array}   an optional list of attributes to update
+   *   expected  {Array}    expected relation values for dependant1, dependant2
+   *                        and host respectively.
+   * }
+   */
+  const tests = [
+    {
+      desc: "No attribute",
+      expected: [null, null, null],
+    },
+    {
+      desc: "Set attribute",
+      attrs: [{ key: attr, value: "dependant1" }],
+      expected: [host, null, dependant1],
+    },
+    {
+      desc: "Change attribute",
+      attrs: [{ key: attr, value: "dependant2" }],
+      expected: [null, host, dependant2],
+    },
+    {
+      desc: "Remove attribute",
+      attrs: [{ key: attr }],
+      expected: [null, null, null],
+    },
+  ];
+
+  for (let { desc, attrs, expected } of tests) {
+    info(desc);
+
+    if (attrs) {
+      for (let { key, value } of attrs) {
+        await invokeSetAttribute(browser, "host", key, value);
+      }
+    }
+
+    await testCachedRelation(dependant1, dependantRelation, expected[0]);
+    await testCachedRelation(dependant2, dependantRelation, expected[1]);
+    await testCachedRelation(host, hostRelation, expected[2]);
+  }
+}
diff --git a/accessible/tests/browser/events/browser.ini b/accessible/tests/browser/events/browser.ini
new file mode 100644
index 0000000000..576d3e53ab
--- /dev/null
+++ b/accessible/tests/browser/events/browser.ini
@@ -0,0 +1,24 @@
+[DEFAULT]
+subsuite = a11y
+support-files =
+  head.js
+  !/accessible/tests/browser/shared-head.js
+  !/accessible/tests/mochitest/*.js
+  !/accessible/tests/browser/*.jsm
+prefs =
+  javascript.options.asyncstack_capture_debuggee_only=false
+
+[browser_test_A11yUtils_announce.js]
+[browser_test_caret_move_granularity.js]
+[browser_test_docload.js]
+skip-if = true
+[browser_test_focus_browserui.js]
+[browser_test_focus_dialog.js]
+[browser_test_focus_urlbar.js]
+skip-if =
+  os == "linux" # Bug 1782783
+  os == "win" # Bug 1818994
+[browser_test_panel.js]
+[browser_test_scrolling.js]
+[browser_test_selection_urlbar.js]
+[browser_test_textcaret.js]
diff --git a/accessible/tests/browser/events/browser_test_A11yUtils_announce.js b/accessible/tests/browser/events/browser_test_A11yUtils_announce.js
new file mode 100644
index 0000000000..b2848f35c2
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_A11yUtils_announce.js
@@ -0,0 +1,57 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+// Check that the browser A11yUtils.announce() function works correctly.
+// Note that this does not use mozilla::a11y::Accessible::Announce and a11y
+// announcement events, as these aren't yet supported on desktop.
+async function runTests() {
+  const alert = document.getElementById("a11y-announcement");
+  let alerted = waitForEvent(EVENT_ALERT, alert);
+  A11yUtils.announce({ raw: "first" });
+  let event = await alerted;
+  const alertAcc = event.accessible;
+  is(alertAcc.role, ROLE_ALERT);
+  ok(!alertAcc.name);
+  is(alertAcc.childCount, 1);
+  is(alertAcc.firstChild.name, "first");
+
+  alerted = waitForEvent(EVENT_ALERT, alertAcc);
+  A11yUtils.announce({ raw: "second" });
+  event = await alerted;
+  ok(!alertAcc.name);
+  is(alertAcc.childCount, 1);
+  is(alertAcc.firstChild.name, "second");
+
+  info("Testing Fluent message");
+  // We need a simple Fluent message here without arguments or attributes.
+  const fluentId = "search-one-offs-with-title";
+  const fluentMessage = await document.l10n.formatValue(fluentId);
+  alerted = waitForEvent(EVENT_ALERT, alertAcc);
+  A11yUtils.announce({ id: fluentId });
+  event = await alerted;
+  ok(!alertAcc.name);
+  is(alertAcc.childCount, 1);
+  is(alertAcc.firstChild.name, fluentMessage);
+
+  info("Ensuring Fluent message is cancelled if announce is re-entered");
+  alerted = waitForEvent(EVENT_ALERT, alertAcc);
+  // This call runs async.
+  let asyncAnnounce = A11yUtils.announce({ id: fluentId });
+  // Before the async call finishes, call announce again.
+  A11yUtils.announce({ raw: "third" });
+  // Wait for the async call to complete.
+  await asyncAnnounce;
+  event = await alerted;
+  ok(!alertAcc.name);
+  is(alertAcc.childCount, 1);
+  // The async call should have been cancelled. If it wasn't, we would get
+  // fluentMessage here instead of "third".
+  is(alertAcc.firstChild.name, "third");
+}
+
+addAccessibleTask(``, runTests);
diff --git a/accessible/tests/browser/events/browser_test_caret_move_granularity.js b/accessible/tests/browser/events/browser_test_caret_move_granularity.js
new file mode 100644
index 0000000000..c72ae42d85
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_caret_move_granularity.js
@@ -0,0 +1,102 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const CLUSTER_AMOUNT = Ci.nsISelectionListener.CLUSTER_AMOUNT;
+const WORD_AMOUNT = Ci.nsISelectionListener.WORD_AMOUNT;
+const LINE_AMOUNT = Ci.nsISelectionListener.LINE_AMOUNT;
+const BEGINLINE_AMOUNT = Ci.nsISelectionListener.BEGINLINE_AMOUNT;
+const ENDLINE_AMOUNT = Ci.nsISelectionListener.ENDLINE_AMOUNT;
+
+const isMac = AppConstants.platform == "macosx";
+
+function matchCaretMoveEvent(id, caretOffset) {
+  return evt => {
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    return (
+      getAccessibleDOMNodeID(evt.accessible) == id &&
+      evt.caretOffset == caretOffset
+    );
+  };
+}
+
+addAccessibleTask(
+  ``,
+  async function (browser, accDoc) {
+    const textarea = findAccessibleChildByID(accDoc, "textarea");
+    let caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 0)
+    );
+    textarea.takeFocus();
+    let evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 1)
+    );
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    is(evt.granularity, CLUSTER_AMOUNT, "Caret moved by cluster");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 15)
+    );
+    EventUtils.synthesizeKey("KEY_ArrowDown");
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    todo(!evt.isAtEndOfLine, "Caret is not at end of line");
+    is(evt.granularity, LINE_AMOUNT, "Caret moved by line");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 14)
+    );
+    if (isMac) {
+      EventUtils.synthesizeKey("KEY_ArrowLeft", { metaKey: true });
+    } else {
+      EventUtils.synthesizeKey("KEY_Home");
+    }
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    is(evt.granularity, BEGINLINE_AMOUNT, "Caret moved to line start");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 28)
+    );
+    if (isMac) {
+      EventUtils.synthesizeKey("KEY_ArrowRight", { metaKey: true });
+    } else {
+      EventUtils.synthesizeKey("KEY_End");
+    }
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(evt.isAtEndOfLine, "Caret is at end of line");
+    is(evt.granularity, ENDLINE_AMOUNT, "Caret moved to line end");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 24)
+    );
+    if (isMac) {
+      EventUtils.synthesizeKey("KEY_ArrowLeft", { altKey: true });
+    } else {
+      EventUtils.synthesizeKey("KEY_ArrowLeft", { ctrlKey: true });
+    }
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    is(evt.granularity, WORD_AMOUNT, "Caret moved by word");
+  }
+);
diff --git a/accessible/tests/browser/events/browser_test_docload.js b/accessible/tests/browser/events/browser_test_docload.js
new file mode 100644
index 0000000000..11ba90db19
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_docload.js
@@ -0,0 +1,122 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+function busyChecker(isBusy) {
+  return function (event) {
+    let scEvent;
+    try {
+      scEvent = event.QueryInterface(nsIAccessibleStateChangeEvent);
+    } catch (e) {
+      return false;
+    }
+
+    return scEvent.state == STATE_BUSY && scEvent.isEnabled == isBusy;
+  };
+}
+
+function inIframeChecker(iframeId) {
+  return function (event) {
+    return getAccessibleDOMNodeID(event.accessibleDocument.parent) == iframeId;
+  };
+}
+
+function urlChecker(url) {
+  return function (event) {
+    info(`${event.accessibleDocument.URL} == ${url}`);
+    return event.accessibleDocument.URL == url;
+  };
+}
+
+async function runTests(browser, accDoc) {
+  let onLoadEvents = waitForEvents({
+    expected: [
+      [EVENT_REORDER, getAccessible(browser)],
+      [EVENT_DOCUMENT_LOAD_COMPLETE, "body2"],
+      [EVENT_STATE_CHANGE, busyChecker(false)],
+    ],
+    unexpected: [
+      [EVENT_DOCUMENT_LOAD_COMPLETE, inIframeChecker("iframe1")],
+      [EVENT_STATE_CHANGE, inIframeChecker("iframe1")],
+    ],
+  });
+
+  BrowserTestUtils.loadURIString(
+    browser,
+    `data:text/html;charset=utf-8,
+    
+      
+    `
+  );
+
+  await onLoadEvents;
+
+  onLoadEvents = waitForEvents([
+    [EVENT_DOCUMENT_LOAD_COMPLETE, urlChecker("about:about")],
+    [EVENT_STATE_CHANGE, busyChecker(false)],
+    [EVENT_REORDER, getAccessible(browser)],
+  ]);
+
+  BrowserTestUtils.loadURIString(browser, "about:about");
+
+  await onLoadEvents;
+
+  onLoadEvents = waitForEvents([
+    [EVENT_DOCUMENT_RELOAD, evt => evt.isFromUserInput],
+    [EVENT_REORDER, getAccessible(browser)],
+    [EVENT_STATE_CHANGE, busyChecker(false)],
+  ]);
+
+  EventUtils.synthesizeKey("VK_F5", {}, browser.ownerGlobal);
+
+  await onLoadEvents;
+
+  onLoadEvents = waitForEvents([
+    [EVENT_DOCUMENT_LOAD_COMPLETE, urlChecker("about:mozilla")],
+    [EVENT_STATE_CHANGE, busyChecker(false)],
+    [EVENT_REORDER, getAccessible(browser)],
+  ]);
+
+  BrowserTestUtils.loadURIString(browser, "about:mozilla");
+
+  await onLoadEvents;
+
+  onLoadEvents = waitForEvents([
+    [EVENT_DOCUMENT_RELOAD, evt => !evt.isFromUserInput],
+    [EVENT_REORDER, getAccessible(browser)],
+    [EVENT_STATE_CHANGE, busyChecker(false)],
+  ]);
+
+  browser.reload();
+
+  await onLoadEvents;
+
+  onLoadEvents = waitForEvents([
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    [EVENT_DOCUMENT_LOAD_COMPLETE, urlChecker("http://www.wronguri.wronguri/")],
+    [EVENT_STATE_CHANGE, busyChecker(false)],
+    [EVENT_REORDER, getAccessible(browser)],
+  ]);
+
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  BrowserTestUtils.loadURIString(browser, "http://www.wronguri.wronguri/");
+
+  await onLoadEvents;
+
+  onLoadEvents = waitForEvents([
+    [EVENT_DOCUMENT_LOAD_COMPLETE, urlChecker("https://nocert.example.com/")],
+    [EVENT_STATE_CHANGE, busyChecker(false)],
+    [EVENT_REORDER, getAccessible(browser)],
+  ]);
+
+  BrowserTestUtils.loadURIString(browser, "https://nocert.example.com:443/");
+
+  await onLoadEvents;
+}
+
+/**
+ * Test caching of accessible object states
+ */
+addAccessibleTask("", runTests);
diff --git a/accessible/tests/browser/events/browser_test_focus_browserui.js b/accessible/tests/browser/events/browser_test_focus_browserui.js
new file mode 100644
index 0000000000..969d336c74
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_focus_browserui.js
@@ -0,0 +1,57 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/states.js */
+/* import-globals-from ../../mochitest/role.js */
+loadScripts(
+  { name: "states.js", dir: MOCHITESTS_DIR },
+  { name: "role.js", dir: MOCHITESTS_DIR }
+);
+
+async function runTests(browser, accDoc) {
+  await SpecialPowers.pushPrefEnv({
+    // If Fission is disabled, the pref is no-op.
+    set: [["fission.bfcacheInParent", true]],
+  });
+
+  let onFocus = waitForEvent(EVENT_FOCUS, "input");
+  EventUtils.synthesizeKey("VK_TAB", {}, browser.ownerGlobal);
+  let evt = await onFocus;
+  testStates(evt.accessible, STATE_FOCUSED);
+
+  onFocus = waitForEvent(EVENT_FOCUS, "buttonInputDoc");
+  let url = snippetToURL(``, {
+    contentDocBodyAttrs: { id: "buttonInputDoc" },
+  });
+  browser.loadURI(Services.io.newURI(url), {
+    triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
+  });
+  evt = await onFocus;
+  testStates(evt.accessible, STATE_FOCUSED);
+
+  onFocus = waitForEvent(EVENT_FOCUS, "input");
+  browser.goBack();
+  evt = await onFocus;
+  testStates(evt.accessible, STATE_FOCUSED);
+
+  onFocus = waitForEvent(
+    EVENT_FOCUS,
+    event => event.accessible.DOMNode == gURLBar.inputField
+  );
+  EventUtils.synthesizeKey("t", { accelKey: true }, browser.ownerGlobal);
+  evt = await onFocus;
+  testStates(evt.accessible, STATE_FOCUSED);
+
+  onFocus = waitForEvent(EVENT_FOCUS, "input");
+  EventUtils.synthesizeKey("w", { accelKey: true }, browser.ownerGlobal);
+  evt = await onFocus;
+  testStates(evt.accessible, STATE_FOCUSED);
+}
+
+/**
+ * Accessibility loading document events test.
+ */
+addAccessibleTask(``, runTests);
diff --git a/accessible/tests/browser/events/browser_test_focus_dialog.js b/accessible/tests/browser/events/browser_test_focus_dialog.js
new file mode 100644
index 0000000000..71485a678d
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_focus_dialog.js
@@ -0,0 +1,76 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/states.js */
+/* import-globals-from ../../mochitest/role.js */
+loadScripts(
+  { name: "states.js", dir: MOCHITESTS_DIR },
+  { name: "role.js", dir: MOCHITESTS_DIR }
+);
+
+async function runTests(browser, accDoc) {
+  let onFocus = waitForEvent(EVENT_FOCUS, "button");
+  await SpecialPowers.spawn(browser, [], () => {
+    content.document.getElementById("button").focus();
+  });
+  let button = (await onFocus).accessible;
+  testStates(button, STATE_FOCUSED);
+
+  // Bug 1377942 - The target of the focus event changes under different
+  // circumstances.
+  // In e10s the focus event is the new window, in non-e10s it's the doc.
+  onFocus = waitForEvent(EVENT_FOCUS, () => true);
+  let newWin = await BrowserTestUtils.openNewBrowserWindow();
+  // button should be blurred
+  await onFocus;
+  testStates(button, 0, 0, STATE_FOCUSED);
+
+  onFocus = waitForEvent(EVENT_FOCUS, "button");
+  await BrowserTestUtils.closeWindow(newWin);
+  testStates((await onFocus).accessible, STATE_FOCUSED);
+
+  onFocus = waitForEvent(EVENT_FOCUS, "body2");
+  await SpecialPowers.spawn(browser, [], () => {
+    content.document
+      .getElementById("editabledoc")
+      .contentWindow.document.body.focus();
+  });
+  testStates((await onFocus).accessible, STATE_FOCUSED);
+
+  onFocus = waitForEvent(EVENT_FOCUS, "body2");
+  newWin = await BrowserTestUtils.openNewBrowserWindow();
+  await BrowserTestUtils.closeWindow(newWin);
+  testStates((await onFocus).accessible, STATE_FOCUSED);
+
+  let onShow = waitForEvent(EVENT_SHOW, "alertdialog");
+  onFocus = waitForEvent(EVENT_FOCUS, "alertdialog");
+  await SpecialPowers.spawn(browser, [], () => {
+    let alertDialog = content.document.getElementById("alertdialog");
+    alertDialog.style.display = "block";
+    alertDialog.focus();
+  });
+  await onShow;
+  testStates((await onFocus).accessible, STATE_FOCUSED);
+}
+
+/**
+ * Accessible dialog focus testing
+ */
+addAccessibleTask(
+  `
+  
+  
+  `,
+  runTests
+);
diff --git a/accessible/tests/browser/events/browser_test_focus_urlbar.js b/accessible/tests/browser/events/browser_test_focus_urlbar.js
new file mode 100644
index 0000000000..68b2b07f3c
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_focus_urlbar.js
@@ -0,0 +1,438 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/states.js */
+/* import-globals-from ../../mochitest/role.js */
+loadScripts(
+  { name: "states.js", dir: MOCHITESTS_DIR },
+  { name: "role.js", dir: MOCHITESTS_DIR }
+);
+
+ChromeUtils.defineESModuleGetters(this, {
+  PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
+  PlacesUtils: "resource://gre/modules/PlacesUtils.sys.mjs",
+  UrlbarProvider: "resource:///modules/UrlbarUtils.sys.mjs",
+  UrlbarProvidersManager: "resource:///modules/UrlbarProvidersManager.sys.mjs",
+  UrlbarResult: "resource:///modules/UrlbarResult.sys.mjs",
+  UrlbarTestUtils: "resource://testing-common/UrlbarTestUtils.sys.mjs",
+  UrlbarUtils: "resource:///modules/UrlbarUtils.sys.mjs",
+});
+
+function isEventForAutocompleteItem(event) {
+  return event.accessible.role == ROLE_COMBOBOX_OPTION;
+}
+
+function isEventForButton(event) {
+  return event.accessible.role == ROLE_PUSHBUTTON;
+}
+
+function isEventForOneOffEngine(event) {
+  let parent = event.accessible.parent;
+  return (
+    event.accessible.role == ROLE_PUSHBUTTON &&
+    parent &&
+    parent.role == ROLE_GROUPING &&
+    parent.name
+  );
+}
+
+function isEventForMenuPopup(event) {
+  return event.accessible.role == ROLE_MENUPOPUP;
+}
+
+function isEventForMenuItem(event) {
+  return event.accessible.role == ROLE_MENUITEM;
+}
+
+function isEventForResultButton(event) {
+  let parent = event.accessible.parent;
+  return (
+    event.accessible.role == ROLE_PUSHBUTTON &&
+    parent?.role == ROLE_COMBOBOX_LIST
+  );
+}
+
+/**
+ * A test provider.
+ */
+class TipTestProvider extends UrlbarProvider {
+  constructor(matches) {
+    super();
+    this._matches = matches;
+  }
+  get name() {
+    return "TipTestProvider";
+  }
+  get type() {
+    return UrlbarUtils.PROVIDER_TYPE.PROFILE;
+  }
+  isActive(context) {
+    return true;
+  }
+  isRestricting(context) {
+    return true;
+  }
+  async startQuery(context, addCallback) {
+    this._context = context;
+    for (const match of this._matches) {
+      addCallback(this, match);
+    }
+  }
+}
+
+// Check that the URL bar manages accessibility focus appropriately.
+async function runTests() {
+  registerCleanupFunction(async function () {
+    await UrlbarTestUtils.promisePopupClose(window);
+    await PlacesUtils.history.clear();
+  });
+
+  await PlacesTestUtils.addVisits([
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example1.com/blah",
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example2.com/blah",
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example1.com/",
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example2.com/",
+  ]);
+
+  // Ensure initial state.
+  await UrlbarTestUtils.promisePopupClose(window);
+
+  let focused = waitForEvent(
+    EVENT_FOCUS,
+    event => event.accessible.role == ROLE_ENTRY
+  );
+  gURLBar.focus();
+  let event = await focused;
+  let textBox = event.accessible;
+  // Ensure the URL bar is ready for a new URL to be typed.
+  // Sometimes, when this test runs, the existing text isn't selected when the
+  // URL bar is focused. Pressing escape twice ensures that the popup is
+  // closed and that the existing text is selected.
+  EventUtils.synthesizeKey("KEY_Escape");
+  EventUtils.synthesizeKey("KEY_Escape");
+
+  info("Ensuring no focus change when first text is typed");
+  await UrlbarTestUtils.promiseAutocompleteResultPopup({
+    window,
+    waitForFocus,
+    value: "example",
+    fireInputEvent: true,
+  });
+  // Wait a tick for a11y events to fire.
+  await TestUtils.waitForTick();
+  testStates(textBox, STATE_FOCUSED);
+
+  info("Ensuring no focus change on backspace");
+  EventUtils.synthesizeKey("KEY_Backspace");
+  await UrlbarTestUtils.promiseSearchComplete(window);
+  // Wait a tick for a11y events to fire.
+  await TestUtils.waitForTick();
+  testStates(textBox, STATE_FOCUSED);
+
+  info("Ensuring no focus change on text selection and delete");
+  EventUtils.synthesizeKey("KEY_ArrowLeft", { shiftKey: true });
+  EventUtils.synthesizeKey("KEY_Delete");
+  await UrlbarTestUtils.promiseSearchComplete(window);
+  // Wait a tick for a11y events to fire.
+  await TestUtils.waitForTick();
+  testStates(textBox, STATE_FOCUSED);
+
+  info("Ensuring autocomplete focus on down arrow (1)");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring focus of another autocomplete item on down arrow");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring previous arrow selection state doesn't get stale on input");
+  focused = waitForEvent(EVENT_FOCUS, textBox);
+  EventUtils.sendString("z");
+  await focused;
+  EventUtils.synthesizeKey("KEY_Backspace");
+  await UrlbarTestUtils.promiseSearchComplete(window);
+  testStates(textBox, STATE_FOCUSED);
+
+  info("Ensuring focus of another autocomplete item on down arrow");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  if (AppConstants.platform == "macosx") {
+    info("Ensuring focus of another autocomplete item on ctrl-n");
+    focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+    EventUtils.synthesizeKey("n", { ctrlKey: true });
+    event = await focused;
+    testStates(event.accessible, STATE_FOCUSED);
+
+    info("Ensuring focus of another autocomplete item on ctrl-p");
+    focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+    EventUtils.synthesizeKey("p", { ctrlKey: true });
+    event = await focused;
+    testStates(event.accessible, STATE_FOCUSED);
+  }
+
+  info("Ensuring focus of another autocomplete item on up arrow");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring text box focus on left arrow");
+  focused = waitForEvent(EVENT_FOCUS, textBox);
+  EventUtils.synthesizeKey("KEY_ArrowLeft");
+  await focused;
+  testStates(textBox, STATE_FOCUSED);
+
+  gURLBar.view.close();
+  // On Mac, down arrow when not at the end of the field moves to the end.
+  // Move back to the end so the next press of down arrow opens the popup.
+  EventUtils.synthesizeKey("KEY_ArrowRight");
+
+  info("Ensuring autocomplete focus on down arrow (2)");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring autocomplete focus on arrow up for search settings button");
+  focused = waitForEvent(EVENT_FOCUS, isEventForButton);
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring text box focus when text is typed");
+  focused = waitForEvent(EVENT_FOCUS, textBox);
+  EventUtils.sendString("z");
+  await focused;
+  testStates(textBox, STATE_FOCUSED);
+  EventUtils.synthesizeKey("KEY_Backspace");
+  await UrlbarTestUtils.promiseSearchComplete(window);
+
+  info("Ensuring autocomplete focus on down arrow (3)");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring text box focus on backspace");
+  focused = waitForEvent(EVENT_FOCUS, textBox);
+  EventUtils.synthesizeKey("KEY_Backspace");
+  await focused;
+  testStates(textBox, STATE_FOCUSED);
+  await UrlbarTestUtils.promiseSearchComplete(window);
+
+  info("Ensuring autocomplete focus on arrow down (4)");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  // Arrow down to the last result.
+  const resultCount = UrlbarTestUtils.getResultCount(window);
+  while (UrlbarTestUtils.getSelectedRowIndex(window) != resultCount - 1) {
+    EventUtils.synthesizeKey("KEY_ArrowDown");
+  }
+
+  info("Ensuring one-off search button focus on arrow down");
+  focused = waitForEvent(EVENT_FOCUS, isEventForOneOffEngine);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring autocomplete focus on arrow up");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring text box focus on text selection");
+  focused = waitForEvent(EVENT_FOCUS, textBox);
+  EventUtils.synthesizeKey("KEY_ArrowLeft", { shiftKey: true });
+  await focused;
+  testStates(textBox, STATE_FOCUSED);
+
+  if (AppConstants.platform == "macosx") {
+    // On Mac, ctrl-n after arrow left/right does not re-open the popup.
+    // Type some text so the next press of ctrl-n opens the popup.
+    EventUtils.sendString("ple");
+
+    info("Ensuring autocomplete focus on ctrl-n");
+    focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+    EventUtils.synthesizeKey("n", { ctrlKey: true });
+    event = await focused;
+    testStates(event.accessible, STATE_FOCUSED);
+  }
+
+  if (
+    AppConstants.platform == "macosx" &&
+    Services.prefs.getBoolPref("widget.macos.native-context-menus", false)
+  ) {
+    // With native context menus, we do not observe accessibility events and we
+    // cannot send synthetic key events to the menu.
+    info("Opening and closing context native context menu");
+    let contextMenu = gURLBar.querySelector("menupopup");
+    let popupshown = BrowserTestUtils.waitForEvent(contextMenu, "popupshown");
+    EventUtils.synthesizeMouseAtCenter(gURLBar.querySelector("moz-input-box"), {
+      type: "contextmenu",
+    });
+    await popupshown;
+    let popuphidden = BrowserTestUtils.waitForEvent(contextMenu, "popuphidden");
+    contextMenu.hidePopup();
+    await popuphidden;
+  } else {
+    info(
+      "Ensuring context menu gets menu event on launch, and item focus on down"
+    );
+    let menuEvent = waitForEvent(
+      nsIAccessibleEvent.EVENT_MENUPOPUP_START,
+      isEventForMenuPopup
+    );
+    EventUtils.synthesizeMouseAtCenter(gURLBar.querySelector("moz-input-box"), {
+      type: "contextmenu",
+    });
+    await menuEvent;
+
+    focused = waitForEvent(EVENT_FOCUS, isEventForMenuItem);
+    EventUtils.synthesizeKey("KEY_ArrowDown");
+    event = await focused;
+    testStates(event.accessible, STATE_FOCUSED);
+
+    focused = waitForEvent(EVENT_FOCUS, textBox);
+    let closed = waitForEvent(
+      nsIAccessibleEvent.EVENT_MENUPOPUP_END,
+      isEventForMenuPopup
+    );
+    EventUtils.synthesizeKey("KEY_Escape");
+    await closed;
+    await focused;
+  }
+  info("Ensuring address bar is focused after context menu is dismissed.");
+  testStates(textBox, STATE_FOCUSED);
+}
+
+// We test TIP results in their own test so the spoofed results don't interfere
+// with the main test.
+async function runTipTests() {
+  let matches = [
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.URL,
+      UrlbarUtils.RESULT_SOURCE.HISTORY,
+      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+      { url: "http://mozilla.org/a" }
+    ),
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.TIP,
+      UrlbarUtils.RESULT_SOURCE.OTHER_LOCAL,
+      {
+        // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+        helpUrl: "http://example.com/",
+        type: "test",
+        titleL10n: { id: "urlbar-search-tips-confirm" },
+        buttons: [
+          {
+            // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+            url: "http://example.com/",
+            l10n: { id: "urlbar-search-tips-confirm" },
+          },
+        ],
+      }
+    ),
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.URL,
+      UrlbarUtils.RESULT_SOURCE.HISTORY,
+      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+      { url: "http://mozilla.org/b" }
+    ),
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.URL,
+      UrlbarUtils.RESULT_SOURCE.HISTORY,
+      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+      { url: "http://mozilla.org/c" }
+    ),
+  ];
+
+  // Ensure the tip appears in the expected position.
+  matches[1].suggestedIndex = 2;
+
+  let provider = new TipTestProvider(matches);
+  UrlbarProvidersManager.registerProvider(provider);
+
+  registerCleanupFunction(async function () {
+    UrlbarProvidersManager.unregisterProvider(provider);
+  });
+
+  let focused = waitForEvent(
+    EVENT_FOCUS,
+    event => event.accessible.role == ROLE_ENTRY
+  );
+  gURLBar.focus();
+  let event = await focused;
+  let textBox = event.accessible;
+
+  EventUtils.synthesizeKey("KEY_Escape");
+  EventUtils.synthesizeKey("KEY_Escape");
+
+  info("Ensuring no focus change when first text is typed");
+  await UrlbarTestUtils.promiseAutocompleteResultPopup({
+    window,
+    waitForFocus,
+    value: "example",
+    fireInputEvent: true,
+  });
+  // Wait a tick for a11y events to fire.
+  await TestUtils.waitForTick();
+  testStates(textBox, STATE_FOCUSED);
+
+  info("Ensuring autocomplete focus on down arrow (1)");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring the tip button is focused on down arrow");
+  info("Also ensuring that the tip button is a part of a labelled group");
+  focused = waitForEvent(EVENT_FOCUS, isEventForResultButton);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring the help button is focused on tab");
+  info("Also ensuring that the help button is a part of a labelled group");
+  focused = waitForEvent(EVENT_FOCUS, isEventForResultButton);
+  EventUtils.synthesizeKey("KEY_Tab");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring autocomplete focus on down arrow (2)");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring the help button is focused on shift+tab");
+  focused = waitForEvent(EVENT_FOCUS, isEventForResultButton);
+  EventUtils.synthesizeKey("KEY_Tab", { shiftKey: true });
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring text box focus on left arrow, and not back to the tip button");
+  focused = waitForEvent(EVENT_FOCUS, textBox);
+  EventUtils.synthesizeKey("KEY_ArrowLeft");
+  await focused;
+  testStates(textBox, STATE_FOCUSED);
+}
+
+addAccessibleTask(``, runTests);
+addAccessibleTask(``, runTipTests);
diff --git a/accessible/tests/browser/events/browser_test_panel.js b/accessible/tests/browser/events/browser_test_panel.js
new file mode 100644
index 0000000000..f2d74cc5f9
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_panel.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+// Verify we recieve hide and show notifications when the chrome
+// XUL alert is closed or opened. Mac expects both notifications to
+// properly communicate live region changes.
+async function runTests(browser) {
+  ok(PopupNotifications, "PopupNotifications object exists");
+  ok(PopupNotifications.panel, "PopupNotifications panel exists");
+
+  // When available, the popup panel makes itself a child of the chrome window.
+  // To verify it isn't accessible without reproducing the entirety of the chrome
+  // window tree, we check instead that the panel is not accessible.
+  ok(!isAccessible(PopupNotifications.panel), "Popup panel is not accessible");
+
+  const panelShown = waitForEvent(EVENT_SHOW, PopupNotifications.panel);
+  const notification = PopupNotifications.show(
+    browser,
+    "test-notification",
+    "hello world",
+    PopupNotifications.panel.id
+  );
+
+  await panelShown;
+
+  ok(isAccessible(PopupNotifications.panel), "Popup panel is accessible");
+  testAccessibleTree(PopupNotifications.panel, {
+    ALERT: [
+      {
+        TEXT_CONTAINER: [
+          { LABEL: [{ TEXT_LEAF: [] }] },
+          { PUSHBUTTON: [] },
+          { PUSHBUTTON: [] },
+        ],
+      },
+    ],
+  });
+  // Verify the popup panel is associated with the chrome window.
+  is(
+    PopupNotifications.panel.ownerGlobal,
+    getMainChromeWindow(window),
+    "Popup panel is associated with the chrome window"
+  );
+
+  const panelHidden = waitForEvent(EVENT_HIDE, PopupNotifications.panel);
+  PopupNotifications.remove(notification);
+
+  await panelHidden;
+
+  ok(!isAccessible(PopupNotifications.panel), "Popup panel is not accessible");
+}
+
+addAccessibleTask(``, runTests);
diff --git a/accessible/tests/browser/events/browser_test_scrolling.js b/accessible/tests/browser/events/browser_test_scrolling.js
new file mode 100644
index 0000000000..f1f4b07120
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_scrolling.js
@@ -0,0 +1,113 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+addAccessibleTask(
+  `
+    
      one
      
+    
      two
      
+    
      
+      
      three
      
+    
      
+    
+  `,
+  async function (browser, accDoc) {
+    let onScrolling = waitForEvents([
+      [EVENT_SCROLLING, accDoc],
+      [EVENT_SCROLLING_END, accDoc],
+    ]);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.location.hash = "#two";
+    });
+    let [scrollEvent1, scrollEndEvent1] = await onScrolling;
+    scrollEvent1.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEvent1.maxScrollY >= scrollEvent1.scrollY,
+      "scrollY is within max"
+    );
+    scrollEndEvent1.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEndEvent1.maxScrollY >= scrollEndEvent1.scrollY,
+      "scrollY is within max"
+    );
+
+    onScrolling = waitForEvents([
+      [EVENT_SCROLLING, accDoc],
+      [EVENT_SCROLLING_END, accDoc],
+    ]);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.location.hash = "#three";
+    });
+    let [scrollEvent2, scrollEndEvent2] = await onScrolling;
+    scrollEvent2.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEvent2.scrollY > scrollEvent1.scrollY,
+      `${scrollEvent2.scrollY} > ${scrollEvent1.scrollY}`
+    );
+    scrollEndEvent2.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEndEvent2.maxScrollY >= scrollEndEvent2.scrollY,
+      "scrollY is within max"
+    );
+
+    onScrolling = waitForEvents([
+      [EVENT_SCROLLING, accDoc],
+      [EVENT_SCROLLING_END, accDoc],
+    ]);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.scrollTo(10, 0);
+    });
+    let [scrollEvent3, scrollEndEvent3] = await onScrolling;
+    scrollEvent3.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEvent3.maxScrollX >= scrollEvent3.scrollX,
+      "scrollX is within max"
+    );
+    scrollEndEvent3.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEndEvent3.maxScrollX >= scrollEndEvent3.scrollX,
+      "scrollY is within max"
+    );
+    ok(
+      scrollEvent3.scrollX > scrollEvent2.scrollX,
+      `${scrollEvent3.scrollX} > ${scrollEvent2.scrollX}`
+    );
+
+    // non-doc scrolling
+    onScrolling = waitForEvents([
+      [EVENT_SCROLLING, "three"],
+      [EVENT_SCROLLING_END, "three"],
+    ]);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.querySelector("#three").scrollTo(0, 10);
+    });
+    let [scrollEvent4, scrollEndEvent4] = await onScrolling;
+    scrollEvent4.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEvent4.maxScrollY >= scrollEvent4.scrollY,
+      "scrollY is within max"
+    );
+    scrollEndEvent4.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEndEvent4.maxScrollY >= scrollEndEvent4.scrollY,
+      "scrollY is within max"
+    );
+
+    // textarea scrolling
+    info("Moving textarea caret to c");
+    onScrolling = waitForEvents([
+      [EVENT_SCROLLING, "textarea"],
+      [EVENT_SCROLLING_END, "textarea"],
+    ]);
+    await invokeContentTask(browser, [], () => {
+      const textareaDom = content.document.getElementById("textarea");
+      textareaDom.focus();
+      textareaDom.selectionStart = 4;
+    });
+    await onScrolling;
+  }
+);
diff --git a/accessible/tests/browser/events/browser_test_selection_urlbar.js b/accessible/tests/browser/events/browser_test_selection_urlbar.js
new file mode 100644
index 0000000000..8f8fdb92f7
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_selection_urlbar.js
@@ -0,0 +1,61 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+ChromeUtils.defineESModuleGetters(this, {
+  UrlbarTestUtils: "resource://testing-common/UrlbarTestUtils.sys.mjs",
+});
+
+// Check that the URL bar manages accessibility
+// selection notifications appropriately on startup (new window).
+async function runTests() {
+  let focused = waitForEvent(
+    EVENT_FOCUS,
+    event => event.accessible.role == ROLE_ENTRY
+  );
+  info("Creating new window");
+  let newWin = await BrowserTestUtils.openNewBrowserWindow();
+  let bookmark = await PlacesUtils.bookmarks.insert({
+    parentGuid: PlacesUtils.bookmarks.toolbarGuid,
+    title: "addons",
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    url: Services.io.newURI("http://www.addons.mozilla.org/"),
+  });
+
+  registerCleanupFunction(async function () {
+    await BrowserTestUtils.closeWindow(newWin);
+    await PlacesUtils.bookmarks.remove(bookmark);
+  });
+  info("Focusing window");
+  newWin.focus();
+  await focused;
+
+  // Ensure the URL bar is ready for a new URL to be typed.
+  // Sometimes, when this test runs, the existing text isn't selected when the
+  // URL bar is focused. Pressing escape twice ensures that the popup is
+  // closed and that the existing text is selected.
+  EventUtils.synthesizeKey("KEY_Escape", {}, newWin);
+  EventUtils.synthesizeKey("KEY_Escape", {}, newWin);
+  let caretMoved = waitForEvent(
+    EVENT_TEXT_CARET_MOVED,
+    event => event.accessible.role == ROLE_ENTRY
+  );
+
+  info("Autofilling after typing `a` in new window URL bar.");
+  EventUtils.synthesizeKey("a", {}, newWin);
+  await UrlbarTestUtils.promiseSearchComplete(newWin);
+  Assert.equal(
+    newWin.gURLBar.inputField.value,
+    "addons.mozilla.org/",
+    "autofilled value as expected"
+  );
+
+  info("Ensuring caret moved on text selection");
+  await caretMoved;
+}
+
+addAccessibleTask(``, runTests);
diff --git a/accessible/tests/browser/events/browser_test_textcaret.js b/accessible/tests/browser/events/browser_test_textcaret.js
new file mode 100644
index 0000000000..d5065c81f3
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_textcaret.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Caret move events checker.
+ */
+function caretMoveChecker(target, caretOffset) {
+  return function (event) {
+    let cmEvent = event.QueryInterface(nsIAccessibleCaretMoveEvent);
+    return (
+      cmEvent.accessible == getAccessible(target) &&
+      cmEvent.caretOffset == caretOffset
+    );
+  };
+}
+
+async function checkURLBarCaretEvents() {
+  const kURL = "about:mozilla";
+  let newWin = await BrowserTestUtils.openNewBrowserWindow();
+  BrowserTestUtils.loadURIString(newWin.gBrowser.selectedBrowser, kURL);
+  newWin.gBrowser.selectedBrowser.focus();
+
+  await waitForEvent(EVENT_DOCUMENT_LOAD_COMPLETE, event => {
+    try {
+      return event.accessible.QueryInterface(nsIAccessibleDocument).URL == kURL;
+    } catch (e) {
+      return false;
+    }
+  });
+  info("Loaded " + kURL);
+
+  let urlbarInputEl = newWin.gURLBar.inputField;
+  let urlbarInput = getAccessible(urlbarInputEl, [nsIAccessibleText]);
+
+  let onCaretMove = waitForEvents([
+    [EVENT_TEXT_CARET_MOVED, caretMoveChecker(urlbarInput, kURL.length)],
+    [EVENT_FOCUS, urlbarInput],
+  ]);
+
+  urlbarInput.caretOffset = -1;
+  await onCaretMove;
+  ok(true, "Caret move in URL bar #1");
+
+  onCaretMove = waitForEvent(
+    EVENT_TEXT_CARET_MOVED,
+    caretMoveChecker(urlbarInput, 0)
+  );
+
+  urlbarInput.caretOffset = 0;
+  await onCaretMove;
+  ok(true, "Caret move in URL bar #2");
+
+  await BrowserTestUtils.closeWindow(newWin);
+}
+
+add_task(checkURLBarCaretEvents);
diff --git a/accessible/tests/browser/events/head.js b/accessible/tests/browser/events/head.js
new file mode 100644
index 0000000000..afc50984bd
--- /dev/null
+++ b/accessible/tests/browser/events/head.js
@@ -0,0 +1,18 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+// Load the shared-head file first.
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js",
+  this
+);
+
+// Loading and common.js from accessible/tests/mochitest/ for all tests, as
+// well as promisified-events.js.
+loadScripts(
+  { name: "common.js", dir: MOCHITESTS_DIR },
+  { name: "promisified-events.js", dir: MOCHITESTS_DIR }
+);
diff --git a/accessible/tests/browser/fission/browser.ini b/accessible/tests/browser/fission/browser.ini
new file mode 100644
index 0000000000..c898fb54d2
--- /dev/null
+++ b/accessible/tests/browser/fission/browser.ini
@@ -0,0 +1,20 @@
+[DEFAULT]
+subsuite = a11y
+support-files =
+  head.js
+  !/accessible/tests/browser/shared-head.js
+  !/accessible/tests/browser/*.jsm
+  !/accessible/tests/mochitest/*.js
+prefs =
+  javascript.options.asyncstack_capture_debuggee_only=false
+
+[browser_content_tree.js]
+[browser_hidden_iframe.js]
+https_first_disabled = true
+[browser_nested_iframe.js]
+skip-if =
+  os == "win" && os_version == "6.1" # Skip on Azure - frequent failure
+[browser_reframe_root.js]
+[browser_reframe_visibility.js]
+[browser_src_change.js]
+[browser_take_focus.js]
diff --git a/accessible/tests/browser/fission/browser_content_tree.js b/accessible/tests/browser/fission/browser_content_tree.js
new file mode 100644
index 0000000000..1592ae6a1a
--- /dev/null
+++ b/accessible/tests/browser/fission/browser_content_tree.js
@@ -0,0 +1,75 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  `
+    
+      
+      
+    
+  
      cell1cell2
      
+  
        
+    
      • item1
        • 
+  
      `,
+  async function (browser, iframeDocAcc, contentDocAcc) {
+    ok(iframeDocAcc, "IFRAME document accessible is present");
+    (gIsRemoteIframe ? isnot : is)(
+      browser.browsingContext.currentWindowGlobal.osPid,
+      browser.browsingContext.children[0].currentWindowGlobal.osPid,
+      `Content and IFRAME documents are in ${
+        gIsRemoteIframe ? "separate processes" : "same process"
+      }.`
+    );
+
+    const tree = {
+      DOCUMENT: [
+        {
+          INTERNAL_FRAME: [
+            {
+              DOCUMENT: [
+                {
+                  TABLE: [
+                    {
+                      ROW: [
+                        { CELL: [{ TEXT_LEAF: [] }] },
+                        { CELL: [{ TEXT_LEAF: [] }] },
+                      ],
+                    },
+                  ],
+                },
+                {
+                  LIST: [
+                    {
+                      LISTITEM: [{ LISTITEM_MARKER: [] }, { TEXT_LEAF: [] }],
+                    },
+                  ],
+                },
+              ],
+            },
+          ],
+        },
+      ],
+    };
+    testAccessibleTree(contentDocAcc, tree);
+
+    const iframeAcc = contentDocAcc.getChildAt(0);
+    is(
+      iframeAcc.getChildAt(0),
+      iframeDocAcc,
+      "Document for the IFRAME matches IFRAME's first child."
+    );
+
+    is(
+      iframeDocAcc.parent,
+      iframeAcc,
+      "IFRAME document's parent matches the IFRAME."
+    );
+  },
+  { topLevel: false, iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/fission/browser_hidden_iframe.js b/accessible/tests/browser/fission/browser_hidden_iframe.js
new file mode 100644
index 0000000000..61414b611d
--- /dev/null
+++ b/accessible/tests/browser/fission/browser_hidden_iframe.js
@@ -0,0 +1,70 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/states.js */
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "states.js", dir: MOCHITESTS_DIR });
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  ``,
+  async function (browser, contentDocAcc) {
+    info(
+      "Check that the IFRAME and the IFRAME document are not accessible initially."
+    );
+    let iframeAcc = findAccessibleChildByID(contentDocAcc, DEFAULT_IFRAME_ID);
+    let iframeDocAcc = findAccessibleChildByID(
+      contentDocAcc,
+      DEFAULT_IFRAME_DOC_BODY_ID
+    );
+    ok(!iframeAcc, "IFRAME is hidden and should not be accessible");
+    ok(!iframeDocAcc, "IFRAME document is hidden and should not be accessible");
+
+    info(
+      "Show the IFRAME and check that it's now available in the accessibility tree."
+    );
+
+    const events = [[EVENT_REORDER, contentDocAcc]];
+
+    const onEvents = waitForEvents(events);
+    await SpecialPowers.spawn(browser, [DEFAULT_IFRAME_ID], contentId => {
+      content.document.getElementById(contentId).style.display = "";
+    });
+    await onEvents;
+
+    iframeAcc = findAccessibleChildByID(contentDocAcc, DEFAULT_IFRAME_ID);
+    ok(!isDefunct(iframeAcc), "IFRAME should be accessible");
+
+    // Wait for the child iframe to layout itself. This can happen during or
+    // after the reorder event, depending on timing.
+    iframeDocAcc = await TestUtils.waitForCondition(() => {
+      return findAccessibleChildByID(contentDocAcc, DEFAULT_IFRAME_DOC_BODY_ID);
+    });
+
+    is(iframeAcc.childCount, 1, "IFRAME accessible should have a single child");
+    ok(iframeDocAcc, "IFRAME document exists");
+    ok(!isDefunct(iframeDocAcc), "IFRAME document should be accessible");
+    is(
+      iframeAcc.firstChild,
+      iframeDocAcc,
+      "An accessible for a IFRAME document is the child of the IFRAME accessible"
+    );
+    is(
+      iframeDocAcc.parent,
+      iframeAcc,
+      "IFRAME document's parent matches the IFRAME."
+    );
+  },
+  {
+    topLevel: false,
+    iframe: true,
+    remoteIframe: true,
+    iframeAttrs: {
+      style: "display: none;",
+    },
+    skipFissionDocLoad: true,
+  }
+);
diff --git a/accessible/tests/browser/fission/browser_nested_iframe.js b/accessible/tests/browser/fission/browser_nested_iframe.js
new file mode 100644
index 0000000000..d6600a2d5e
--- /dev/null
+++ b/accessible/tests/browser/fission/browser_nested_iframe.js
@@ -0,0 +1,164 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+const NESTED_IFRAME_DOC_BODY_ID = "nested-iframe-body";
+const NESTED_IFRAME_ID = "nested-iframe";
+// eslint-disable-next-line @microsoft/sdl/no-insecure-url
+const nestedURL = new URL(`http://example.com/document-builder.sjs`);
+nestedURL.searchParams.append(
+  "html",
+  `
+      
+        
+        Accessibility Nested Iframe Frame Test
+      
+      
+        
+          
+            
+            
+          
+        
      cell1cell2
      
+        
        
+          
      • item1
        • 
+        
      
+      
+    `
+);
+
+function getOsPid(browsingContext) {
+  return browsingContext.currentWindowGlobal.osPid;
+}
+
+addAccessibleTask(
+  `
+
      
+
+  `,
+  async function (browser, docAcc) {
+    const dpr = await getContentDPR(browser);
+    // Test getOffsetAtPoint on a container containing no characters. The inner
+    // container does not include the requested point, but the outer one does.
+    const noChars = findAccessibleChildByID(docAcc, "noChars", [
+      Ci.nsIAccessibleText,
+    ]);
+    let [x, y] = Layout.getBounds(noChars, dpr);
+    await testOffsetAtPoint(noChars, x, y, COORDTYPE_SCREEN_RELATIVE, -1);
+
+    // Test that the correct offset is returned for a point in a second text
+    // leaf.
+    const twoText = findAccessibleChildByID(docAcc, "twoText", [
+      Ci.nsIAccessibleText,
+    ]);
+    const text2 = twoText.getChildAt(1);
+    [x, y] = Layout.getBounds(text2, dpr);
+    await testOffsetAtPoint(twoText, x, y, COORDTYPE_SCREEN_RELATIVE, 1);
+
+    // Test offsetAtPoint when there is an iframe at the end of the container.
+    const iframeAtEnd = findAccessibleChildByID(docAcc, "iframeAtEnd", [
+      Ci.nsIAccessibleText,
+    ]);
+    let width;
+    let height;
+    [x, y, width, height] = Layout.getBounds(iframeAtEnd, dpr);
+    x += width - 1;
+    y += height - 1;
+    await testOffsetAtPoint(iframeAtEnd, x, y, COORDTYPE_SCREEN_RELATIVE, -1);
+
+    // Test that 0 is returned if the point is within the container but before
+    // the rectangle at offset 0. This is buggy behavior that some users have
+    // unfortunately come to rely on (bug 1816601).
+    const pointBeforeText = findAccessibleChildByID(docAcc, "pointBeforeText", [
+      Ci.nsIAccessibleText,
+    ]);
+    [x, y, width, height] = Layout.getBounds(pointBeforeText, dpr);
+    await testOffsetAtPoint(
+      pointBeforeText,
+      x + 1,
+      y + 1,
+      COORDTYPE_SCREEN_RELATIVE,
+      0
+    );
+    // But this buggy behavior only applies for a point before offset 0, not
+    // a point after the last offset. So it's asymmetrically buggy. :(
+    await testOffsetAtPoint(
+      pointBeforeText,
+      x + width - 1,
+      y + height - 1,
+      COORDTYPE_SCREEN_RELATIVE,
+      -1
+    );
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
diff --git a/accessible/tests/browser/hittest/browser_test_zoom.js b/accessible/tests/browser/hittest/browser_test_zoom.js
new file mode 100644
index 0000000000..84383df483
--- /dev/null
+++ b/accessible/tests/browser/hittest/browser_test_zoom.js
@@ -0,0 +1,38 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+async function runTests(browser, accDoc) {
+  if (Services.appinfo.OS !== "Darwin") {
+    const p1 = findAccessibleChildByID(accDoc, "p1");
+    const p2 = findAccessibleChildByID(accDoc, "p2");
+    await hitTest(browser, accDoc, p1, p1.firstChild);
+    await hitTest(browser, accDoc, p2, p2.firstChild);
+
+    await invokeContentTask(browser, [], () => {
+      const { Layout } = ChromeUtils.importESModule(
+        "chrome://mochitests/content/browser/accessible/tests/browser/Layout.sys.mjs"
+      );
+
+      Layout.zoomDocument(content.document, 2.0);
+      content.document.body.offsetTop; // getBounds doesn't flush layout on its own.
+    });
+
+    await hitTest(browser, accDoc, p1, p1.firstChild);
+    await hitTest(browser, accDoc, p2, p2.firstChild);
+  } else {
+    todo(
+      false,
+      "Bug 746974 - deepest child must be correct on all platforms, disabling on Mac!"
+    );
+  }
+}
+
+addAccessibleTask(`
      para 1
      para 2
      `, runTests, {
+  iframe: true,
+  remoteIframe: true,
+  // Ensure that all hittest elements are in view.
+  iframeAttrs: { style: "left: 100px; top: 100px;" },
+});
diff --git a/accessible/tests/browser/hittest/browser_test_zoom_text.js b/accessible/tests/browser/hittest/browser_test_zoom_text.js
new file mode 100644
index 0000000000..9e429c16b3
--- /dev/null
+++ b/accessible/tests/browser/hittest/browser_test_zoom_text.js
@@ -0,0 +1,64 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+async function runTests(browser, accDoc) {
+  const expectedLength = await invokeContentTask(browser, [], () => {
+    const { CommonUtils } = ChromeUtils.importESModule(
+      "chrome://mochitests/content/browser/accessible/tests/browser/Common.sys.mjs"
+    );
+    const hyperText = CommonUtils.getNode("paragraph", content.document);
+    return Math.floor(hyperText.textContent.length / 2);
+  });
+  const hyperText = findAccessibleChildByID(accDoc, "paragraph", [
+    Ci.nsIAccessibleText,
+  ]);
+  const textNode = hyperText.firstChild;
+
+  let [x, y, width, height] = Layout.getBounds(
+    textNode,
+    await getContentDPR(browser)
+  );
+
+  await testOffsetAtPoint(
+    hyperText,
+    x + width / 2,
+    y + height / 2,
+    COORDTYPE_SCREEN_RELATIVE,
+    expectedLength
+  );
+
+  await invokeContentTask(browser, [], () => {
+    const { Layout } = ChromeUtils.importESModule(
+      "chrome://mochitests/content/browser/accessible/tests/browser/Layout.sys.mjs"
+    );
+
+    Layout.zoomDocument(content.document, 2.0);
+    content.document.body.offsetTop; // getBounds doesn't flush layout on its own.
+  });
+
+  [x, y, width, height] = Layout.getBounds(
+    textNode,
+    await getContentDPR(browser)
+  );
+
+  await testOffsetAtPoint(
+    hyperText,
+    x + width / 2,
+    y + height / 2,
+    COORDTYPE_SCREEN_RELATIVE,
+    expectedLength
+  );
+}
+
+addAccessibleTask(
+  `
      hello world hello world
      `,
+  runTests,
+  {
+    iframe: true,
+    remoteIframe: true,
+    iframeAttrs: { style: "width: 600px; height: 600px;" },
+  }
+);
diff --git a/accessible/tests/browser/hittest/head.js b/accessible/tests/browser/hittest/head.js
new file mode 100644
index 0000000000..c2904b1578
--- /dev/null
+++ b/accessible/tests/browser/hittest/head.js
@@ -0,0 +1,113 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* exported CommonUtils, testChildAtPoint, Layout, hitTest, testOffsetAtPoint */
+
+// Load the shared-head file first.
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js",
+  this
+);
+
+// Loading and common.js from accessible/tests/mochitest/ for all tests, as
+// well as promisified-events.js.
+loadScripts(
+  { name: "common.js", dir: MOCHITESTS_DIR },
+  { name: "promisified-events.js", dir: MOCHITESTS_DIR }
+);
+
+const { CommonUtils } = ChromeUtils.importESModule(
+  "chrome://mochitests/content/browser/accessible/tests/browser/Common.sys.mjs"
+);
+
+const { Layout } = ChromeUtils.importESModule(
+  "chrome://mochitests/content/browser/accessible/tests/browser/Layout.sys.mjs"
+);
+
+function getChildAtPoint(container, x, y, findDeepestChild) {
+  try {
+    return findDeepestChild
+      ? container.getDeepestChildAtPoint(x, y)
+      : container.getChildAtPoint(x, y);
+  } catch (e) {
+    // Failed to get child at point.
+  }
+  info("could not get child at point");
+  return null;
+}
+
+async function testChildAtPoint(dpr, x, y, container, child, grandChild) {
+  const [containerX, containerY] = Layout.getBounds(container, dpr);
+  x += containerX;
+  y += containerY;
+  let actual = null;
+  await untilCacheIs(
+    () => {
+      actual = getChildAtPoint(container, x, y, false);
+      info(`Got direct child match of ${CommonUtils.prettyName(actual)}`);
+      return actual;
+    },
+    child,
+    `Wrong direct child accessible at the point (${x}, ${y}) of ${CommonUtils.prettyName(
+      container
+    )}, sought ${CommonUtils.prettyName(
+      child
+    )} and got ${CommonUtils.prettyName(actual)}`
+  );
+  actual = null;
+  await untilCacheIs(
+    () => {
+      actual = getChildAtPoint(container, x, y, true);
+      info(`Got deepest child match of ${CommonUtils.prettyName(actual)}`);
+      return actual;
+    },
+    grandChild,
+    `Wrong deepest child accessible at the point (${x}, ${y}) of ${CommonUtils.prettyName(
+      container
+    )}, sought ${CommonUtils.prettyName(
+      grandChild
+    )} and got ${CommonUtils.prettyName(actual)}`
+  );
+}
+
+/**
+ * Test if getChildAtPoint returns the given child and grand child accessibles
+ * at coordinates of child accessible (direct and deep hit test).
+ */
+async function hitTest(browser, container, child, grandChild) {
+  const [childX, childY] = await getContentBoundsForDOMElm(
+    browser,
+    getAccessibleDOMNodeID(child)
+  );
+  const x = childX + 1;
+  const y = childY + 1;
+
+  await untilCacheIs(
+    () => getChildAtPoint(container, x, y, false),
+    child,
+    `Wrong direct child accessible at the point (${x}, ${y}) of ${CommonUtils.prettyName(
+      container
+    )}, sought ${CommonUtils.prettyName(child)}`
+  );
+  await untilCacheIs(
+    () => getChildAtPoint(container, x, y, true),
+    grandChild,
+    `Wrong deepest child accessible at the point (${x}, ${y}) of ${CommonUtils.prettyName(
+      container
+    )}, sought ${CommonUtils.prettyName(grandChild)}`
+  );
+}
+
+/**
+ * Test if getOffsetAtPoint returns the given text offset at given coordinates.
+ */
+async function testOffsetAtPoint(hyperText, x, y, coordType, expectedOffset) {
+  await untilCacheIs(
+    () => hyperText.getOffsetAtPoint(x, y, coordType),
+    expectedOffset,
+    `Wrong offset at given point (${x}, ${y}) for ${prettyName(hyperText)}`
+  );
+}
diff --git a/accessible/tests/browser/mac/browser.ini b/accessible/tests/browser/mac/browser.ini
new file mode 100644
index 0000000000..f88cfc56ca
--- /dev/null
+++ b/accessible/tests/browser/mac/browser.ini
@@ -0,0 +1,58 @@
+[DEFAULT]
+subsuite = a11y
+skip-if = os != 'mac'
+support-files =
+  head.js
+  doc_aria_tabs.html
+  doc_textmarker_test.html
+  doc_rich_listbox.xhtml
+  doc_menulist.xhtml
+  doc_tree.xhtml
+  !/accessible/tests/browser/shared-head.js
+  !/accessible/tests/browser/*.jsm
+  !/accessible/tests/mochitest/*.js
+  !/accessible/tests/mochitest/letters.gif
+  !/accessible/tests/mochitest/moz.png
+prefs =
+  javascript.options.asyncstack_capture_debuggee_only=false
+
+[browser_app.js]
+https_first_disabled = true
+[browser_aria_current.js]
+[browser_aria_expanded.js]
+[browser_details_summary.js]
+[browser_label_title.js]
+[browser_range.js]
+[browser_roles_elements.js]
+[browser_table.js]
+[browser_selectables.js]
+[browser_radio_position.js]
+[browser_toggle_radio_check.js]
+[browser_link.js]
+[browser_aria_haspopup.js]
+[browser_required.js]
+[browser_popupbutton.js]
+[browser_mathml.js]
+[browser_input.js]
+[browser_focus.js]
+[browser_text_leaf.js]
+[browser_webarea.js]
+[browser_text_basics.js]
+[browser_text_input.js]
+skip-if =
+  os == "mac" # Bug 1778821
+[browser_rotor.js]
+[browser_rootgroup.js]
+[browser_text_selection.js]
+[browser_navigate.js]
+[browser_outline.js]
+[browser_outline_xul.js]
+[browser_hierarchy.js]
+[browser_menulist.js]
+[browser_rich_listbox.js]
+[browser_live_regions.js]
+[browser_aria_busy.js]
+[browser_aria_controls_flowto.js]
+[browser_attributed_text.js]
+[browser_bounds.js]
+[browser_heading.js]
diff --git a/accessible/tests/browser/mac/browser_app.js b/accessible/tests/browser/mac/browser_app.js
new file mode 100644
index 0000000000..7bb69e273a
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_app.js
@@ -0,0 +1,351 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+function getMacAccessible(accOrElmOrID) {
+  return new Promise(resolve => {
+    let intervalId = setInterval(() => {
+      let acc = getAccessible(accOrElmOrID);
+      if (acc) {
+        clearInterval(intervalId);
+        resolve(
+          acc.nativeInterface.QueryInterface(Ci.nsIAccessibleMacInterface)
+        );
+      }
+    }, 10);
+  });
+}
+
+/**
+ * Test a11yUtils announcements are exposed to VO
+ */
+add_task(async () => {
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "data:text/html,"
+  );
+  const alert = document.getElementById("a11y-announcement");
+  ok(alert, "Found alert to send announcements");
+
+  const alerted = waitForMacEvent("AXAnnouncementRequested", (iface, data) => {
+    return data.AXAnnouncementKey == "hello world";
+  });
+
+  A11yUtils.announce({
+    raw: "hello world",
+  });
+  await alerted;
+  await BrowserTestUtils.removeTab(tab);
+});
+
+/**
+ * Test browser tabs
+ */
+add_task(async () => {
+  let newTabs = await Promise.all([
+    BrowserTestUtils.openNewForegroundTab(
+      gBrowser,
+      "data:text/html,Two"
+    ),
+    BrowserTestUtils.openNewForegroundTab(
+      gBrowser,
+      "data:text/html,Three"
+    ),
+    BrowserTestUtils.openNewForegroundTab(
+      gBrowser,
+      "data:text/html,Four"
+    ),
+  ]);
+
+  // Mochitests spawn with a tab, and we've opened 3 more for a total of 4 tabs
+  is(gBrowser.tabs.length, 4, "We now have 4 open tabs");
+
+  let tablist = await getMacAccessible("tabbrowser-tabs");
+  is(
+    tablist.getAttributeValue("AXRole"),
+    "AXTabGroup",
+    "Correct role for tablist"
+  );
+
+  let tabMacAccs = tablist.getAttributeValue("AXTabs");
+  is(tabMacAccs.length, 4, "4 items in AXTabs");
+
+  let selectedTabs = tablist.getAttributeValue("AXSelectedChildren");
+  is(selectedTabs.length, 1, "one selected tab");
+
+  let tab = selectedTabs[0];
+  is(tab.getAttributeValue("AXRole"), "AXRadioButton", "Correct role for tab");
+  is(
+    tab.getAttributeValue("AXSubrole"),
+    "AXTabButton",
+    "Correct subrole for tab"
+  );
+  is(tab.getAttributeValue("AXTitle"), "Four", "Correct title for tab");
+
+  let tabToSelect = tabMacAccs[2];
+  is(
+    tabToSelect.getAttributeValue("AXTitle"),
+    "Three",
+    "Correct title for tab"
+  );
+
+  let actions = tabToSelect.actionNames;
+  ok(true, actions);
+  ok(actions.includes("AXPress"), "Has switch action");
+
+  // When tab is clicked selection of tab group changes,
+  // and focus goes to the web area. Wait for both.
+  let evt = Promise.all([
+    waitForMacEvent("AXSelectedChildrenChanged"),
+    waitForMacEvent(
+      "AXFocusedUIElementChanged",
+      iface => iface.getAttributeValue("AXRole") == "AXWebArea"
+    ),
+  ]);
+  tabToSelect.performAction("AXPress");
+  await evt;
+
+  selectedTabs = tablist.getAttributeValue("AXSelectedChildren");
+  is(selectedTabs.length, 1, "one selected tab");
+  is(
+    selectedTabs[0].getAttributeValue("AXTitle"),
+    "Three",
+    "Correct title for tab"
+  );
+
+  // Close all open tabs
+  await Promise.all(newTabs.map(t => BrowserTestUtils.removeTab(t)));
+});
+
+/**
+ * Test ignored invisible items in root
+ */
+add_task(async () => {
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: "about:license",
+    },
+    async browser => {
+      let root = await getMacAccessible(document);
+      let rootChildCount = () => root.getAttributeValue("AXChildren").length;
+
+      // With no popups, the root accessible has 5 visible children:
+      // 1. Tab bar (#TabsToolbar)
+      // 2. Navigation bar (#nav-bar)
+      // 3. Content area (#tabbrowser-tabpanels)
+      // 4. Some fullscreen pointer grabber (#fullscreen-and-pointerlock-wrapper)
+      // 5. Accessibility announcements dialog (#a11y-announcement)
+      let baseRootChildCount = 5;
+      is(
+        rootChildCount(),
+        baseRootChildCount,
+        "Root with no popups has 5 children"
+      );
+
+      // Open a context menu
+      const menu = document.getElementById("contentAreaContextMenu");
+      if (
+        Services.prefs.getBoolPref("widget.macos.native-context-menus", false)
+      ) {
+        // Native context menu - do not expect accessibility notifications.
+        let popupshown = BrowserTestUtils.waitForPopupEvent(menu, "shown");
+        EventUtils.synthesizeMouseAtCenter(document.body, {
+          type: "contextmenu",
+        });
+        await popupshown;
+
+        is(
+          rootChildCount(),
+          baseRootChildCount,
+          "Native context menus do not show up in the root children"
+        );
+
+        // Close context menu
+        let popuphidden = BrowserTestUtils.waitForPopupEvent(menu, "hidden");
+        menu.hidePopup();
+        await popuphidden;
+      } else {
+        // Non-native menu
+        EventUtils.synthesizeMouseAtCenter(document.body, {
+          type: "contextmenu",
+        });
+        await waitForMacEvent("AXMenuOpened");
+
+        // Now root has 1 more child
+        is(rootChildCount(), baseRootChildCount + 1, "Root has 1 more child");
+
+        // Close context menu
+        let closed = waitForMacEvent("AXMenuClosed", "contentAreaContextMenu");
+        EventUtils.synthesizeKey("KEY_Escape");
+        await BrowserTestUtils.waitForPopupEvent(menu, "hidden");
+        await closed;
+      }
+
+      // We're back to base child count
+      is(rootChildCount(), baseRootChildCount, "Root has original child count");
+
+      // Open site identity popup
+      document.getElementById("identity-icon-box").click();
+      const identityPopup = document.getElementById("identity-popup");
+      await BrowserTestUtils.waitForPopupEvent(identityPopup, "shown");
+
+      // Now root has another child
+      is(rootChildCount(), baseRootChildCount + 1, "Root has another child");
+
+      // Close popup
+      EventUtils.synthesizeKey("KEY_Escape");
+      await BrowserTestUtils.waitForPopupEvent(identityPopup, "hidden");
+
+      // We're back to the base child count
+      is(rootChildCount(), baseRootChildCount, "Root has the base child count");
+    }
+  );
+});
+
+/**
+ * Tests for location bar
+ */
+add_task(async () => {
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+      url: "http://example.com",
+    },
+    async browser => {
+      let input = await getMacAccessible("urlbar-input");
+      is(
+        input.getAttributeValue("AXValue"),
+        "example.com",
+        "Location bar has correct value"
+      );
+    }
+  );
+});
+
+/**
+ * Test context menu
+ */
+add_task(async () => {
+  if (Services.prefs.getBoolPref("widget.macos.native-context-menus", false)) {
+    ok(true, "We cannot inspect native context menu contents; skip this test.");
+    return;
+  }
+
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: 'data:text/html,link',
+    },
+    async browser => {
+      if (!Services.search.isInitialized) {
+        let aStatus = await Services.search.init();
+        Assert.ok(Components.isSuccessCode(aStatus));
+        Assert.ok(Services.search.isInitialized);
+      }
+
+      const hasContainers =
+        Services.prefs.getBoolPref("privacy.userContext.enabled") &&
+        !!ContextualIdentityService.getPublicIdentities().length;
+      info(`${hasContainers ? "Do" : "Don't"} expect containers item.`);
+      const hasInspectA11y =
+        Services.prefs.getBoolPref("devtools.everOpened", false) ||
+        Services.prefs.getIntPref("devtools.selfxss.count", 0) > 0;
+      info(`${hasInspectA11y ? "Do" : "Don't"} expect inspect a11y item.`);
+
+      // synthesize a right click on the link to open the link context menu
+      let menu = document.getElementById("contentAreaContextMenu");
+      await BrowserTestUtils.synthesizeMouseAtCenter(
+        "#exampleLink",
+        { type: "contextmenu" },
+        browser
+      );
+      await waitForMacEvent("AXMenuOpened");
+
+      menu = await getMacAccessible(menu);
+      let menuChildren = menu.getAttributeValue("AXChildren");
+      const expectedChildCount = 12 + +hasContainers + +hasInspectA11y;
+      is(
+        menuChildren.length,
+        expectedChildCount,
+        `Context menu on link contains ${expectedChildCount} items.`
+      );
+      // items at indicies 3, 9, and 11 are the splitters when containers exist
+      // everything else should be a menu item, otherwise indicies of splitters are
+      // 3, 8, and 10
+      const splitterIndicies = hasContainers ? [4, 9, 11] : [3, 8, 10];
+      for (let i = 0; i < menuChildren.length; i++) {
+        if (splitterIndicies.includes(i)) {
+          is(
+            menuChildren[i].getAttributeValue("AXRole"),
+            "AXSplitter",
+            "found splitter in menu"
+          );
+        } else {
+          is(
+            menuChildren[i].getAttributeValue("AXRole"),
+            "AXMenuItem",
+            "found menu item in menu"
+          );
+        }
+      }
+
+      // check the containers sub menu in depth if it exists
+      if (hasContainers) {
+        is(
+          menuChildren[1].getAttributeValue("AXVisibleChildren"),
+          null,
+          "Submenu 1 has no visible chldren when hidden"
+        );
+
+        // focus the first submenu
+        EventUtils.synthesizeKey("KEY_ArrowDown");
+        EventUtils.synthesizeKey("KEY_ArrowDown");
+        EventUtils.synthesizeKey("KEY_ArrowRight");
+        await waitForMacEvent("AXMenuOpened");
+
+        // after the submenu is opened, refetch it
+        menu = document.getElementById("contentAreaContextMenu");
+        menu = await getMacAccessible(menu);
+        menuChildren = menu.getAttributeValue("AXChildren");
+
+        // verify submenu-menuitem's attributes
+        is(
+          menuChildren[1].getAttributeValue("AXChildren").length,
+          1,
+          "Submenu 1 has one child when open"
+        );
+        const subMenu = menuChildren[1].getAttributeValue("AXChildren")[0];
+        is(
+          subMenu.getAttributeValue("AXRole"),
+          "AXMenu",
+          "submenu has role of menu"
+        );
+        const subMenuChildren = subMenu.getAttributeValue("AXChildren");
+        is(subMenuChildren.length, 4, "sub menu has 4 children");
+        is(
+          subMenu.getAttributeValue("AXVisibleChildren").length,
+          4,
+          "submenu has 4 visible children"
+        );
+
+        // close context menu
+        EventUtils.synthesizeKey("KEY_Escape");
+        await waitForMacEvent("AXMenuClosed");
+      }
+
+      EventUtils.synthesizeKey("KEY_Escape");
+      await waitForMacEvent("AXMenuClosed");
+    }
+  );
+});
diff --git a/accessible/tests/browser/mac/browser_aria_busy.js b/accessible/tests/browser/mac/browser_aria_busy.js
new file mode 100644
index 0000000000..e75d334e29
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_aria_busy.js
@@ -0,0 +1,44 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+/**
+ * Test aria-busy
+ */
+addAccessibleTask(
+  `
      Hello
      `,
+  async (browser, accDoc) => {
+    let section = getNativeInterface(accDoc, "section");
+
+    ok(!section.getAttributeValue("AXElementBusy"), "section is not busy");
+
+    let busyChanged = waitForMacEvent("AXElementBusyChanged", "section");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("section")
+        .setAttribute("aria-busy", "true");
+    });
+    await busyChanged;
+
+    ok(section.getAttributeValue("AXElementBusy"), "section is busy");
+
+    busyChanged = waitForMacEvent("AXElementBusyChanged", "section");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("section")
+        .setAttribute("aria-busy", "false");
+    });
+    await busyChanged;
+
+    ok(!section.getAttributeValue("AXElementBusy"), "section is not busy");
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_aria_controls_flowto.js b/accessible/tests/browser/mac/browser_aria_controls_flowto.js
new file mode 100644
index 0000000000..5950a60399
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_aria_controls_flowto.js
@@ -0,0 +1,92 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test aria-controls
+ */
+addAccessibleTask(
+  `
+   
      Information.
      
+   
      More information.
      `,
+  async (browser, accDoc) => {
+    const getAriaControls = id =>
+      JSON.stringify(
+        getNativeInterface(accDoc, id)
+          .getAttributeValue("AXARIAControls")
+          .map(e => e.getAttributeValue("AXDOMIdentifier"))
+      );
+
+    await untilCacheIs(
+      () => getAriaControls("info-button"),
+      JSON.stringify(["info"]),
+      "Info-button has correct initial controls"
+    );
+
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("info-button")
+        .setAttribute("aria-controls", "info more-info");
+    });
+
+    await untilCacheIs(
+      () => getAriaControls("info-button"),
+      JSON.stringify(["info", "more-info"]),
+      "Info-button has correct controls after mutation"
+    );
+  }
+);
+
+function getLinkedUIElements(accDoc, id) {
+  return JSON.stringify(
+    getNativeInterface(accDoc, id)
+      .getAttributeValue("AXLinkedUIElements")
+      .map(e => e.getAttributeValue("AXDOMIdentifier"))
+  );
+}
+
+/**
+ * Test aria-flowto
+ */
+addAccessibleTask(
+  `
+   
      Information.
      
+   
      More information.
      `,
+  async (browser, accDoc) => {
+    await untilCacheIs(
+      () => getLinkedUIElements(accDoc, "info-button"),
+      JSON.stringify(["info"]),
+      "Info-button has correct initial linked elements"
+    );
+
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("info-button")
+        .setAttribute("aria-flowto", "info more-info");
+    });
+
+    await untilCacheIs(
+      () => getLinkedUIElements(accDoc, "info-button"),
+      JSON.stringify(["info", "more-info"]),
+      "Info-button has correct linked elements after mutation"
+    );
+  }
+);
+
+/**
+ * Test aria-controls
+ */
+addAccessibleTask(
+  `
+   
+   
      Information.
      `,
+  async (browser, accDoc) => {
+    await untilCacheIs(
+      () => getLinkedUIElements(accDoc, "dog-radio"),
+      JSON.stringify(["cat-radio", "dog-radio", "info"]),
+      "dog-radio has correct linked elements"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_aria_current.js b/accessible/tests/browser/mac/browser_aria_current.js
new file mode 100644
index 0000000000..02c7a71b67
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_aria_current.js
@@ -0,0 +1,58 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+/**
+ * Test aria-current
+ */
+addAccessibleTask(
+  `OneTwo`,
+  async (browser, accDoc) => {
+    let one = getNativeInterface(accDoc, "one");
+    let two = getNativeInterface(accDoc, "two");
+
+    is(
+      one.getAttributeValue("AXARIACurrent"),
+      "page",
+      "Correct aria-current for #one"
+    );
+    is(
+      two.getAttributeValue("AXARIACurrent"),
+      null,
+      "Correct aria-current for #two"
+    );
+
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("one")
+        .setAttribute("aria-current", "step");
+    });
+
+    is(
+      one.getAttributeValue("AXARIACurrent"),
+      "step",
+      "Correct aria-current for #one"
+    );
+
+    let stateChanged = waitForEvent(EVENT_STATE_CHANGE, "one");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("one").removeAttribute("aria-current");
+    });
+    await stateChanged;
+
+    is(
+      one.getAttributeValue("AXARIACurrent"),
+      null,
+      "Correct aria-current for #one"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_aria_expanded.js b/accessible/tests/browser/mac/browser_aria_expanded.js
new file mode 100644
index 0000000000..48fb615266
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_aria_expanded.js
@@ -0,0 +1,45 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/states.js */
+loadScripts({ name: "states.js", dir: MOCHITESTS_DIR });
+
+// Test aria-expanded on a button
+addAccessibleTask(
+  `hello world
      
+  
      
+  goodbye`,
+  async (browser, accDoc) => {
+    let button = getNativeInterface(accDoc, "b");
+    is(button.getAttributeValue("AXExpanded"), 0, "button is not expanded");
+
+    let stateChanged = Promise.all([
+      waitForStateChange("b", STATE_EXPANDED, true),
+      waitForStateChange("b", STATE_COLLAPSED, false),
+    ]);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("b")
+        .setAttribute("aria-expanded", "true");
+    });
+    await stateChanged;
+    is(button.getAttributeValue("AXExpanded"), 1, "button is expanded");
+
+    stateChanged = Promise.all([
+      waitForStateChange("b", STATE_EXPANDED, false),
+      waitForStateChange("b", EXT_STATE_EXPANDABLE, false, true),
+    ]);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("b").removeAttribute("aria-expanded");
+    });
+    await stateChanged;
+
+    ok(
+      !button.attributeNames.includes("AXExpanded"),
+      "button has no expanded attr"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_aria_haspopup.js b/accessible/tests/browser/mac/browser_aria_haspopup.js
new file mode 100644
index 0000000000..57f1e50f65
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_aria_haspopup.js
@@ -0,0 +1,320 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+/**
+ * Test aria-haspopup
+ */
+addAccessibleTask(
+  `
+  
+
+  
+
+  
+
+  
+
+  
+
+  
+
+  `,
+  async (browser, accDoc) => {
+    // FALSE
+    let falseID = getNativeInterface(accDoc, "false");
+    is(
+      falseID.getAttributeValue("AXHasPopup"),
+      0,
+      "Correct AXHasPopup val for button with false"
+    );
+    is(
+      falseID.getAttributeValue("AXPopupValue"),
+      null,
+      "Correct AXPopupValue val for button with false"
+    );
+    let attrChanged = waitForEvent(EVENT_STATE_CHANGE, "false");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("false")
+        .setAttribute("aria-haspopup", "true");
+    });
+    await attrChanged;
+
+    is(
+      falseID.getAttributeValue("AXPopupValue"),
+      "true",
+      "Correct AXPopupValue after change for false"
+    );
+    is(
+      falseID.getAttributeValue("AXHasPopup"),
+      1,
+      "Correct AXHasPopup val for button with true"
+    );
+
+    let stateChanged = waitForEvent(EVENT_STATE_CHANGE, "false");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("false").removeAttribute("aria-haspopup");
+    });
+    await stateChanged;
+
+    is(
+      falseID.getAttributeValue("AXPopupValue"),
+      null,
+      "Correct AXPopupValue after remove for false"
+    );
+    is(
+      falseID.getAttributeValue("AXHasPopup"),
+      0,
+      "Correct AXHasPopup val for button after remove"
+    );
+
+    // MENU
+    let menuID = getNativeInterface(accDoc, "menu");
+    is(
+      menuID.getAttributeValue("AXPopupValue"),
+      "menu",
+      "Correct AXPopupValue val for button with menu"
+    );
+    is(
+      menuID.getAttributeValue("AXHasPopup"),
+      1,
+      "Correct AXHasPopup val for button with menu"
+    );
+
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("menu")
+        .setAttribute("aria-haspopup", "true");
+    });
+
+    await untilCacheIs(
+      () => menuID.getAttributeValue("AXPopupValue"),
+      "true",
+      "Correct AXPopupValue after change for menu"
+    );
+    is(
+      menuID.getAttributeValue("AXHasPopup"),
+      1,
+      "Correct AXHasPopup val for button with menu"
+    );
+
+    stateChanged = waitForEvent(EVENT_STATE_CHANGE, "menu");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("menu").removeAttribute("aria-haspopup");
+    });
+    await stateChanged;
+
+    await untilCacheIs(
+      () => menuID.getAttributeValue("AXPopupValue"),
+      null,
+      "Correct AXPopupValue after remove for menu"
+    );
+    is(
+      menuID.getAttributeValue("AXHasPopup"),
+      0,
+      "Correct AXHasPopup val for button after remove"
+    );
+
+    // LISTBOX
+    let listboxID = getNativeInterface(accDoc, "listbox");
+    is(
+      listboxID.getAttributeValue("AXPopupValue"),
+      "listbox",
+      "Correct AXPopupValue for button with listbox"
+    );
+    is(
+      listboxID.getAttributeValue("AXHasPopup"),
+      1,
+      "Correct AXHasPopup for button with listbox"
+    );
+
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("listbox")
+        .setAttribute("aria-haspopup", "true");
+    });
+
+    await untilCacheIs(
+      () => listboxID.getAttributeValue("AXPopupValue"),
+      "true",
+      "Correct AXPopupValue after change for listbox"
+    );
+    is(
+      listboxID.getAttributeValue("AXHasPopup"),
+      1,
+      "Correct AXHasPopup for button with listbox"
+    );
+
+    stateChanged = waitForEvent(EVENT_STATE_CHANGE, "listbox");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("listbox")
+        .removeAttribute("aria-haspopup");
+    });
+    await stateChanged;
+
+    is(
+      listboxID.getAttributeValue("AXPopupValue"),
+      null,
+      "Correct AXPopupValue after remove for listbox"
+    );
+    is(
+      listboxID.getAttributeValue("AXHasPopup"),
+      0,
+      "Correct AXHasPopup for button with listbox"
+    );
+
+    // TREE
+    let treeID = getNativeInterface(accDoc, "tree");
+    is(
+      treeID.getAttributeValue("AXPopupValue"),
+      "tree",
+      "Correct AXPopupValue for button with tree"
+    );
+    is(
+      treeID.getAttributeValue("AXHasPopup"),
+      1,
+      "Correct AXHasPopup for button with tree"
+    );
+
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("tree")
+        .setAttribute("aria-haspopup", "true");
+    });
+
+    await untilCacheIs(
+      () => treeID.getAttributeValue("AXPopupValue"),
+      "true",
+      "Correct AXPopupValue after change for tree"
+    );
+    is(
+      treeID.getAttributeValue("AXHasPopup"),
+      1,
+      "Correct AXHasPopup for button with tree"
+    );
+
+    stateChanged = waitForEvent(EVENT_STATE_CHANGE, "tree");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("tree").removeAttribute("aria-haspopup");
+    });
+    await stateChanged;
+
+    is(
+      treeID.getAttributeValue("AXPopupValue"),
+      null,
+      "Correct AXPopupValue after remove for tree"
+    );
+    is(
+      treeID.getAttributeValue("AXHasPopup"),
+      0,
+      "Correct AXHasPopup for button with tree after remove"
+    );
+
+    // GRID
+    let gridID = getNativeInterface(accDoc, "grid");
+    is(
+      gridID.getAttributeValue("AXPopupValue"),
+      "grid",
+      "Correct AXPopupValue for button with grid"
+    );
+    is(
+      gridID.getAttributeValue("AXHasPopup"),
+      1,
+      "Correct AXHasPopup for button with grid"
+    );
+
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("grid")
+        .setAttribute("aria-haspopup", "true");
+    });
+
+    await untilCacheIs(
+      () => gridID.getAttributeValue("AXPopupValue"),
+      "true",
+      "Correct AXPopupValue after change for grid"
+    );
+    is(
+      gridID.getAttributeValue("AXHasPopup"),
+      1,
+      "Correct AXHasPopup for button with grid"
+    );
+
+    stateChanged = waitForEvent(EVENT_STATE_CHANGE, "grid");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("grid").removeAttribute("aria-haspopup");
+    });
+    await stateChanged;
+
+    is(
+      gridID.getAttributeValue("AXPopupValue"),
+      null,
+      "Correct AXPopupValue after remove for grid"
+    );
+    is(
+      gridID.getAttributeValue("AXHasPopup"),
+      0,
+      "Correct AXHasPopup for button with grid after remove"
+    );
+
+    // DIALOG
+    let dialogID = getNativeInterface(accDoc, "dialog");
+    is(
+      dialogID.getAttributeValue("AXPopupValue"),
+      "dialog",
+      "Correct AXPopupValue for button with dialog"
+    );
+    is(
+      dialogID.getAttributeValue("AXHasPopup"),
+      1,
+      "Correct AXHasPopup for button with dialog"
+    );
+
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("dialog")
+        .setAttribute("aria-haspopup", "true");
+    });
+
+    await untilCacheIs(
+      () => dialogID.getAttributeValue("AXPopupValue"),
+      "true",
+      "Correct AXPopupValue after change for dialog"
+    );
+    is(
+      dialogID.getAttributeValue("AXHasPopup"),
+      1,
+      "Correct AXHasPopup for button with dialog"
+    );
+
+    stateChanged = waitForEvent(EVENT_STATE_CHANGE, "dialog");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("dialog")
+        .removeAttribute("aria-haspopup");
+    });
+    await stateChanged;
+
+    is(
+      dialogID.getAttributeValue("AXPopupValue"),
+      null,
+      "Correct AXPopupValue after remove for dialog"
+    );
+    is(
+      dialogID.getAttributeValue("AXHasPopup"),
+      0,
+      "Correct AXHasPopup for button with dialog after remove"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_attributed_text.js b/accessible/tests/browser/mac/browser_attributed_text.js
new file mode 100644
index 0000000000..6f6200751c
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_attributed_text.js
@@ -0,0 +1,144 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+// Test read-only attributed strings
+addAccessibleTask(
+  `
      hello world
      
+   
      this is a test
      `,
+  async (browser, accDoc) => {
+    let macDoc = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+
+    let range = macDoc.getParameterizedAttributeValue(
+      "AXTextMarkerRangeForUnorderedTextMarkers",
+      [
+        macDoc.getAttributeValue("AXStartTextMarker"),
+        macDoc.getAttributeValue("AXEndTextMarker"),
+      ]
+    );
+
+    let attributedText = macDoc.getParameterizedAttributeValue(
+      "AXAttributedStringForTextMarkerRange",
+      range
+    );
+
+    let attributesList = attributedText.map(
+      ({
+        string,
+        AXForegroundColor,
+        AXBackgroundColor,
+        AXUnderline,
+        AXUnderlineColor,
+        AXHeadingLevel,
+        AXFont,
+        AXLink,
+        AXMarkedMisspelled,
+      }) => [
+        string,
+        AXForegroundColor,
+        AXBackgroundColor,
+        AXUnderline,
+        AXUnderlineColor,
+        AXHeadingLevel,
+        AXFont.AXFontSize,
+        AXLink ? AXLink.getAttributeValue("AXDOMIdentifier") : null,
+        AXMarkedMisspelled,
+      ]
+    );
+
+    Assert.deepEqual(attributesList, [
+      // string, fg color, bg color, underline, underline color, heading level, font size, link id, misspelled
+      ["hello ", "#000000", "#ffffff", null, null, 1, 32, null, null],
+      ["world", "#0000ee", "#ffffff", 1, "#0000ee", 1, 32, "a1", null],
+      ["this ", "#000000", "#ffffff", null, null, null, 16, null, null],
+      ["is", "#ff0000", "#ffff00", null, null, null, 16, null, 1],
+      [" ", "#000000", "#ffffff", null, null, null, 16, null, null],
+      ["a", "#000000", "#ffffff", 1, "#008000", null, 16, null, null],
+      [" ", "#000000", "#ffffff", null, null, null, 16, null, null],
+      ["test", "#0000ee", "#ffffff", 1, "#0000ee", null, 16, "a2", null],
+    ]);
+
+    // Test different NSRange parameters for AXAttributedStringForRange
+    let worldLeaf = findAccessibleChildByID(accDoc, "a1").firstChild;
+    let wordStaticText = worldLeaf.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    attributedText = wordStaticText.getParameterizedAttributeValue(
+      "AXAttributedStringForRange",
+      NSRange(4, 1)
+    );
+    is(attributedText.length, 1, "Last character is in single attribute run");
+    is(attributedText[0].string, "d", "Last character matches");
+
+    attributedText = wordStaticText.getParameterizedAttributeValue(
+      "AXAttributedStringForRange",
+      NSRange(5, 1)
+    );
+    is(attributedText.length, 0, "Range is past accessible bounds");
+  }
+);
+
+// Test misspelling in text area
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    let textArea = getNativeInterface(accDoc, "t");
+    let spellDone = waitForEvent(EVENT_TEXT_ATTRIBUTE_CHANGED, "t");
+    textArea.setAttributeValue("AXFocused", true);
+
+    let attributedText = [];
+
+    // For some internal reason we get several text attribute change events
+    // before the attributed text returned provides the misspelling attributes.
+    while (true) {
+      await spellDone;
+
+      let range = textArea.getAttributeValue("AXVisibleCharacterRange");
+      attributedText = textArea.getParameterizedAttributeValue(
+        "AXAttributedStringForRange",
+        NSRange(...range)
+      );
+
+      if (attributedText.length != 3) {
+        spellDone = waitForEvent(EVENT_TEXT_ATTRIBUTE_CHANGED, "t");
+      } else {
+        break;
+      }
+    }
+
+    ok(attributedText[1].AXMarkedMisspelled);
+  }
+);
+
+// Test getting a span of attributed text that includes an empty input element.
+addAccessibleTask(`hello  world`, async (browser, accDoc) => {
+  let macDoc = accDoc.nativeInterface.QueryInterface(
+    Ci.nsIAccessibleMacInterface
+  );
+
+  let range = macDoc.getParameterizedAttributeValue(
+    "AXTextMarkerRangeForUnorderedTextMarkers",
+    [
+      macDoc.getAttributeValue("AXStartTextMarker"),
+      macDoc.getAttributeValue("AXEndTextMarker"),
+    ]
+  );
+
+  let attributedText = macDoc.getParameterizedAttributeValue(
+    "AXAttributedStringForTextMarkerRange",
+    range
+  );
+
+  let text = macDoc.getParameterizedAttributeValue(
+    "AXStringForTextMarkerRange",
+    range
+  );
+
+  is(attributedText.length, 1, "Empty input does not break up attribute run.");
+  is(attributedText[0].string, `hello  world `, "Attributed string is correct");
+  is(text, `hello  world `, "Unattributed string is correct");
+});
diff --git a/accessible/tests/browser/mac/browser_bounds.js b/accessible/tests/browser/mac/browser_bounds.js
new file mode 100644
index 0000000000..09343d7c9d
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_bounds.js
@@ -0,0 +1,77 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test position, size for onscreen content
+ */
+addAccessibleTask(
+  `I am some extra content
      
+   
      hello

      
+   
      hello world
      I am some text
      `,
+  async (browser, accDoc) => {
+    const hello = getNativeInterface(accDoc, "hello");
+    const world = getNativeInterface(accDoc, "world");
+    ok(hello.getAttributeValue("AXFrame"), "Hello's frame attr is not null");
+    ok(world.getAttributeValue("AXFrame"), "World's frame attr is not null");
+
+    // AXSize and AXPosition are composed of AXFrame components, so we
+    // test them here instead of calling AXFrame directly.
+    const [helloWidth, helloHeight] = hello.getAttributeValue("AXSize");
+    const [worldWidth, worldHeight] = world.getAttributeValue("AXSize");
+    ok(helloWidth > 0, "Hello has a positive width");
+    ok(helloHeight > 0, "Hello has a positive height");
+    ok(worldWidth > 0, "World has a positive width");
+    ok(worldHeight > 0, "World has a positive height");
+    ok(helloHeight < worldHeight, "Hello has a smaller height than world");
+    ok(helloWidth < worldWidth, "Hello has a smaller width than world");
+
+    // Note: these are mac screen coords, so our origin is bottom left
+    const [helloX, helloY] = hello.getAttributeValue("AXPosition");
+    const [worldX, worldY] = world.getAttributeValue("AXPosition");
+    ok(helloX > 0, "Hello has a positive X");
+    ok(helloY > 0, "Hello has a positive Y");
+    ok(worldX > 0, "World has a positive X");
+    ok(worldY > 0, "World has a positive Y");
+    ok(helloY > worldY, "Hello has a larger Y than world");
+    ok(helloX == worldX, "Hello and world have the same X");
+  }
+);
+
+/**
+ * Test position, size for offscreen content
+ */
+addAccessibleTask(
+  `I am some extra content
      
+   
      hello

      
+   
      hello world
      I am some text
      `,
+  async (browser, accDoc) => {
+    const hello = getNativeInterface(accDoc, "hello");
+    const world = getNativeInterface(accDoc, "world");
+    ok(hello.getAttributeValue("AXFrame"), "Hello's frame attr is not null");
+    ok(world.getAttributeValue("AXFrame"), "World's frame attr is not null");
+
+    // AXSize and AXPosition are composed of AXFrame components, so we
+    // test them here instead of calling AXFrame directly.
+    const [helloWidth, helloHeight] = hello.getAttributeValue("AXSize");
+    const [worldWidth, worldHeight] = world.getAttributeValue("AXSize");
+    ok(helloWidth > 0, "Hello has a positive width");
+    ok(helloHeight > 0, "Hello has a positive height");
+    ok(worldWidth > 0, "World has a positive width");
+    ok(worldHeight > 0, "World has a positive height");
+    ok(helloHeight < worldHeight, "Hello has a smaller height than world");
+    ok(helloWidth < worldWidth, "Hello has a smaller width than world");
+
+    // Note: these are mac screen coords, so our origin is bottom left
+    const [helloX, helloY] = hello.getAttributeValue("AXPosition");
+    const [worldX, worldY] = world.getAttributeValue("AXPosition");
+    ok(helloX < 0, "Hello has a negative X");
+    ok(helloY > 0, "Hello has a positive Y");
+    ok(worldX < 0, "World has a negative X");
+    ok(worldY > 0, "World has a positive Y");
+    ok(helloY > worldY, "Hello has a larger Y than world");
+    ok(helloX == worldX, "Hello and world have the same X");
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_details_summary.js b/accessible/tests/browser/mac/browser_details_summary.js
new file mode 100644
index 0000000000..6157707f79
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_details_summary.js
@@ -0,0 +1,69 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+/**
+ * Test details/summary
+ */
+addAccessibleTask(
+  `
      Foo
      Bar
      `,
+  async (browser, accDoc) => {
+    let details = getNativeInterface(accDoc, "details");
+    is(
+      details.getAttributeValue("AXRole"),
+      "AXGroup",
+      "Correct role for details"
+    );
+    is(
+      details.getAttributeValue("AXSubrole"),
+      "AXDetails",
+      "Correct subrole for details"
+    );
+
+    let detailsChildren = details.getAttributeValue("AXChildren");
+    is(detailsChildren.length, 1, "collapsed details has only one child");
+
+    let summary = detailsChildren[0];
+    is(
+      summary.getAttributeValue("AXRole"),
+      "AXButton",
+      "Correct role for summary"
+    );
+    is(
+      summary.getAttributeValue("AXSubrole"),
+      "AXSummary",
+      "Correct subrole for summary"
+    );
+    is(summary.getAttributeValue("AXExpanded"), 0, "Summary is collapsed");
+
+    let actions = summary.actionNames;
+    ok(actions.includes("AXPress"), "Summary Has press action");
+
+    let stateChanged = waitForStateChange("summary", STATE_EXPANDED, true);
+    summary.performAction("AXPress");
+    // The reorder gecko event notifies us of a tree change.
+    await stateChanged;
+    is(summary.getAttributeValue("AXExpanded"), 1, "Summary is expanded");
+
+    detailsChildren = details.getAttributeValue("AXChildren");
+    is(detailsChildren.length, 2, "collapsed details has only one child");
+
+    stateChanged = waitForStateChange("summary", STATE_EXPANDED, false);
+    summary.performAction("AXPress");
+    // The reorder gecko event notifies us of a tree change.
+    await stateChanged;
+    is(summary.getAttributeValue("AXExpanded"), 0, "Summary is collapsed 2");
+
+    detailsChildren = details.getAttributeValue("AXChildren");
+    is(detailsChildren.length, 1, "collapsed details has only one child");
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_focus.js b/accessible/tests/browser/mac/browser_focus.js
new file mode 100644
index 0000000000..6bceb06c6c
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_focus.js
@@ -0,0 +1,44 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test focusability
+ */
+addAccessibleTask(
+  `
+  
      hello
       
+  `,
+  async (browser, accDoc) => {
+    let ariabutton = getNativeInterface(accDoc, "ariabutton");
+    let button = getNativeInterface(accDoc, "button");
+
+    is(
+      ariabutton.getAttributeValue("AXFocused"),
+      0,
+      "aria button is not focused"
+    );
+
+    is(button.getAttributeValue("AXFocused"), 0, "button is not focused");
+
+    ok(
+      !ariabutton.isAttributeSettable("AXFocused"),
+      "aria button should not be focusable"
+    );
+
+    ok(button.isAttributeSettable("AXFocused"), "button is focusable");
+
+    let evt = waitForMacEvent(
+      "AXFocusedUIElementChanged",
+      iface => iface.getAttributeValue("AXDOMIdentifier") == "button"
+    );
+
+    button.setAttributeValue("AXFocused", true);
+
+    await evt;
+
+    is(button.getAttributeValue("AXFocused"), 1, "button is focused");
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_heading.js b/accessible/tests/browser/mac/browser_heading.js
new file mode 100644
index 0000000000..fd8c12883d
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_heading.js
@@ -0,0 +1,77 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test whether line break code in text content will be removed
+ * and extra whitespaces will be trimmed.
+ */
+addAccessibleTask(
+  `
+  
      We’re building a richer search experience
      
+  
      
+We’re building a
+richest
+search experience
+  
      
+  `,
+  async (browser, accDoc) => {
+    const singleLineContentHeading = getNativeInterface(
+      accDoc,
+      "single-line-content"
+    );
+    is(
+      singleLineContentHeading.getAttributeValue("AXTitle"),
+      "We’re building a richer search experience"
+    );
+
+    const multiLinesContentHeading = getNativeInterface(
+      accDoc,
+      "multi-lines-content"
+    );
+    is(
+      multiLinesContentHeading.getAttributeValue("AXTitle"),
+      "We’re building a richest search experience"
+    );
+  }
+);
+
+/**
+ * Test AXTitle/AXDescription attributes of heading elements
+ */
+addAccessibleTask(
+  `
+  
      Hello world
      
+  
      Hello
      
+  
      Hello
      
+  `,
+  async (browser, accDoc) => {
+    const a = getNativeInterface(accDoc, "a");
+    is(
+      a.getAttributeValue("AXTitle"),
+      "Hello world",
+      "Correct AXTitle for 'a'"
+    );
+    ok(
+      !a.getAttributeValue("AXDescription"),
+      "'a' Should not have AXDescription"
+    );
+
+    const b = getNativeInterface(accDoc, "b");
+    is(b.getAttributeValue("AXTitle"), "Hello", "Correct AXTitle for 'b'");
+    ok(
+      !b.getAttributeValue("AXDescription"),
+      "'b' Should not have AXDescription"
+    );
+
+    const c = getNativeInterface(accDoc, "c");
+    is(
+      c.getAttributeValue("AXDescription"),
+      "Goodbye",
+      "Correct AXDescription for 'c'"
+    );
+    ok(!c.getAttributeValue("AXTitle"), "'c' Should not have AXTitle");
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_hierarchy.js b/accessible/tests/browser/mac/browser_hierarchy.js
new file mode 100644
index 0000000000..8a97e55c07
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_hierarchy.js
@@ -0,0 +1,75 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test AXIndexForChildUIElement
+ */
+addAccessibleTask(
+  `
      Hello strange world`,
+  (browser, accDoc) => {
+    let p = getNativeInterface(accDoc, "p");
+
+    let children = p.getAttributeValue("AXChildren");
+    is(children.length, 3, "p has 3 children");
+    is(
+      children[1].getAttributeValue("AXDOMIdentifier"),
+      "link",
+      "second child is link"
+    );
+
+    let index = p.getParameterizedAttributeValue(
+      "AXIndexForChildUIElement",
+      children[1]
+    );
+    is(index, 1, "link is second child");
+  }
+);
+
+/**
+ * Test textbox with more than one child
+ */
+addAccessibleTask(
+  `
      Hello strange world
      `,
+  (browser, accDoc) => {
+    let textbox = getNativeInterface(accDoc, "textbox");
+
+    is(
+      textbox.getAttributeValue("AXChildren").length,
+      3,
+      "textbox has 3 children"
+    );
+  }
+);
+
+/**
+ * Test textbox with one child
+ */
+addAccessibleTask(
+  `
      Hello 
      `,
+  async (browser, accDoc) => {
+    let textbox = getNativeInterface(accDoc, "textbox");
+
+    is(
+      textbox.getAttributeValue("AXChildren").length,
+      0,
+      "textbox with one child is pruned"
+    );
+
+    let reorder = waitForEvent(EVENT_REORDER, "textbox");
+    await SpecialPowers.spawn(browser, [], () => {
+      let link = content.document.createElement("a");
+      link.textContent = "World";
+      content.document.getElementById("textbox").appendChild(link);
+    });
+    await reorder;
+
+    is(
+      textbox.getAttributeValue("AXChildren").length,
+      2,
+      "textbox with two child is not pruned"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_input.js b/accessible/tests/browser/mac/browser_input.js
new file mode 100644
index 0000000000..7fa20a9d4b
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_input.js
@@ -0,0 +1,225 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+function selectedTextEventPromises(stateChangeType) {
+  return [
+    waitForMacEventWithInfo("AXSelectedTextChanged", (elem, info) => {
+      return (
+        info.AXTextStateChangeType == stateChangeType &&
+        elem.getAttributeValue("AXDOMIdentifier") == "body"
+      );
+    }),
+    waitForMacEventWithInfo("AXSelectedTextChanged", (elem, info) => {
+      return (
+        info.AXTextStateChangeType == stateChangeType &&
+        elem.getAttributeValue("AXDOMIdentifier") == "input"
+      );
+    }),
+  ];
+}
+
+async function testInput(browser, accDoc) {
+  let input = getNativeInterface(accDoc, "input");
+
+  is(input.getAttributeValue("AXDescription"), "Name", "Correct input label");
+  is(input.getAttributeValue("AXTitle"), "", "Correct input title");
+  is(input.getAttributeValue("AXValue"), "Elmer Fudd", "Correct input value");
+  is(
+    input.getAttributeValue("AXNumberOfCharacters"),
+    10,
+    "Correct length of value"
+  );
+
+  ok(input.attributeNames.includes("AXSelectedText"), "Has AXSelectedText");
+  ok(
+    input.attributeNames.includes("AXSelectedTextRange"),
+    "Has AXSelectedTextRange"
+  );
+
+  let evt = Promise.all([
+    waitForMacEvent("AXFocusedUIElementChanged", "input"),
+    ...selectedTextEventPromises(AXTextStateChangeTypeSelectionMove),
+  ]);
+  await SpecialPowers.spawn(browser, [], () => {
+    content.document.getElementById("input").focus();
+  });
+  await evt;
+
+  evt = Promise.all(
+    selectedTextEventPromises(AXTextStateChangeTypeSelectionExtend)
+  );
+  await SpecialPowers.spawn(browser, [], () => {
+    let elm = content.document.getElementById("input");
+    if (elm.setSelectionRange) {
+      elm.setSelectionRange(6, 9);
+    } else {
+      let r = new content.Range();
+      let textNode = elm.firstElementChild.firstChild;
+      r.setStart(textNode, 6);
+      r.setEnd(textNode, 9);
+
+      let s = content.getSelection();
+      s.removeAllRanges();
+      s.addRange(r);
+    }
+  });
+  await evt;
+
+  is(
+    input.getAttributeValue("AXSelectedText"),
+    "Fud",
+    "Correct text is selected"
+  );
+
+  Assert.deepEqual(
+    input.getAttributeValue("AXSelectedTextRange"),
+    [6, 3],
+    "correct range selected"
+  );
+
+  ok(
+    input.isAttributeSettable("AXSelectedTextRange"),
+    "AXSelectedTextRange is settable"
+  );
+
+  evt = Promise.all(
+    selectedTextEventPromises(AXTextStateChangeTypeSelectionExtend)
+  );
+  input.setAttributeValue("AXSelectedTextRange", NSRange(1, 7));
+  await evt;
+
+  Assert.deepEqual(
+    input.getAttributeValue("AXSelectedTextRange"),
+    [1, 7],
+    "correct range selected"
+  );
+
+  is(
+    input.getAttributeValue("AXSelectedText"),
+    "lmer Fu",
+    "Correct text is selected"
+  );
+
+  let domSelection = await SpecialPowers.spawn(browser, [], () => {
+    let elm = content.document.querySelector("input#input");
+    if (elm) {
+      return elm.value.substring(elm.selectionStart, elm.selectionEnd);
+    }
+
+    return content.getSelection().toString();
+  });
+
+  is(domSelection, "lmer Fu", "correct DOM selection");
+
+  is(
+    input.getParameterizedAttributeValue("AXStringForRange", NSRange(3, 5)),
+    "er Fu",
+    "AXStringForRange works"
+  );
+}
+
+/**
+ * Input selection test
+ */
+addAccessibleTask(
+  ``,
+  testInput
+);
+
+/**
+ * contenteditable selection test
+ */
+addAccessibleTask(
+  `
      
+     
      Elmer Fudd
      
+   
      `,
+  testInput
+);
+
+/**
+ * test contenteditable with selection that extends past editable part
+ */
+addAccessibleTask(
+  `Elmer Fudd is the name`,
+  async (browser, accDoc) => {
+    let evt = Promise.all([
+      waitForMacEvent("AXFocusedUIElementChanged", "input"),
+      waitForMacEvent("AXSelectedTextChanged", "body"),
+      waitForMacEvent("AXSelectedTextChanged", "input"),
+    ]);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("input").focus();
+    });
+    await evt;
+
+    evt = waitForEvent(EVENT_TEXT_CARET_MOVED);
+    await SpecialPowers.spawn(browser, [], () => {
+      let input = content.document.getElementById("input");
+      let notinput = content.document.getElementById("notinput");
+
+      let r = new content.Range();
+      r.setStart(input.firstChild, 4);
+      r.setEnd(notinput.firstChild, 6);
+
+      let s = content.getSelection();
+      s.removeAllRanges();
+      s.addRange(r);
+    });
+    await evt;
+
+    let input = getNativeInterface(accDoc, "input");
+
+    is(
+      input.getAttributeValue("AXSelectedText"),
+      "r Fudd",
+      "Correct text is selected in #input"
+    );
+
+    is(
+      stringForRange(
+        input,
+        input.getAttributeValue("AXSelectedTextMarkerRange")
+      ),
+      "r Fudd is the",
+      "Correct text is selected in document"
+    );
+  }
+);
+
+/**
+ * test nested content editables and their ancestor getters.
+ */
+addAccessibleTask(
+  `
      
+     
      Bob Loblaw's
      
+     
      
+       Law Blog
+     
      
+   
      `,
+  (browser, accDoc) => {
+    let link = getNativeInterface(accDoc, "link");
+    let innerLink = getNativeInterface(accDoc, "inner_link");
+
+    let idmatches = (elem, id) => {
+      is(elem.getAttributeValue("AXDOMIdentifier"), id, "Matches ID");
+    };
+
+    idmatches(link.getAttributeValue("AXEditableAncestor"), "outer");
+    idmatches(link.getAttributeValue("AXFocusableAncestor"), "outer");
+    idmatches(link.getAttributeValue("AXHighestEditableAncestor"), "outer");
+
+    idmatches(innerLink.getAttributeValue("AXEditableAncestor"), "inner");
+    idmatches(innerLink.getAttributeValue("AXFocusableAncestor"), "inner");
+    idmatches(
+      innerLink.getAttributeValue("AXHighestEditableAncestor"),
+      "outer"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_label_title.js b/accessible/tests/browser/mac/browser_label_title.js
new file mode 100644
index 0000000000..2532247e0f
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_label_title.js
@@ -0,0 +1,111 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+/**
+ * Test different labeling/titling schemes for text fields
+ */
+addAccessibleTask(
+  ` 
+     
+   `,
+  (browser, accDoc) => {
+    let n1 = getNativeInterface(accDoc, "n1");
+    let n1Label = n1.getAttributeValue("AXTitleUIElement");
+    // XXX: In Safari the label is an AXText with an AXValue,
+    // here it is an AXGroup witth an AXTitle
+    is(n1Label.getAttributeValue("AXTitle"), "Label");
+
+    let n2 = getNativeInterface(accDoc, "n2");
+    is(n2.getAttributeValue("AXDescription"), "TwoLabels");
+
+    let n3 = getNativeInterface(accDoc, "n3");
+    is(n3.getAttributeValue("AXDescription"), "ARIA Label");
+  }
+);
+
+/**
+ * Test to see that named groups get labels
+ */
+addAccessibleTask(
+  `
      Fields
      `,
+  (browser, accDoc) => {
+    let fieldset = getNativeInterface(accDoc, "fieldset");
+    is(fieldset.getAttributeValue("AXDescription"), "Fields");
+  }
+);
+
+/**
+ * Test to see that list items don't get titled groups
+ */
+addAccessibleTask(
+  `
      • Hello
      
+   
      • World
      `,
+  (browser, accDoc) => {
+    let unstyledItem = getNativeInterface(accDoc, "unstyled-item");
+    is(unstyledItem.getAttributeValue("AXTitle"), "");
+
+    let styledItem = getNativeInterface(accDoc, "unstyled-item");
+    is(styledItem.getAttributeValue("AXTitle"), "");
+  }
+);
+
+/**
+ * Test that we fire a title changed notification
+ */
+addAccessibleTask(
+  `
      `,
+  async (browser, accDoc) => {
+    let elem = getNativeInterface(accDoc, "elem");
+    is(elem.getAttributeValue("AXTitle"), "Hello world");
+    let evt = waitForMacEvent("AXTitleChanged", "elem");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("elem")
+        .setAttribute("aria-label", "Hello universe");
+    });
+    await evt;
+    is(elem.getAttributeValue("AXTitle"), "Hello universe");
+  }
+);
+
+/**
+ * Test articles supply only labels not titles
+ */
+addAccessibleTask(
+  `
      `,
+  async (browser, accDoc) => {
+    let article = getNativeInterface(accDoc, "article");
+    is(article.getAttributeValue("AXDescription"), "Hello world");
+    ok(!article.getAttributeValue("AXTitle"));
+  }
+);
+
+/**
+ * Test text and number inputs supply only labels not titles
+ */
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    let input = getNativeInterface(accDoc, "input");
+    is(input.getAttributeValue("AXDescription"), "The best number you know of");
+    ok(!input.getAttributeValue("AXTitle"));
+    let evt = waitForEvent(EVENT_SHOW, "input");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("input").setAttribute("type", "number");
+    });
+    await evt;
+    input = getNativeInterface(accDoc, "input");
+    is(input.getAttributeValue("AXDescription"), "The best number you know of");
+    ok(!input.getAttributeValue("AXTitle"));
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_link.js b/accessible/tests/browser/mac/browser_link.js
new file mode 100644
index 0000000000..3ec62f4c6d
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_link.js
@@ -0,0 +1,231 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+ChromeUtils.defineESModuleGetters(this, {
+  PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
+});
+
+/**
+ * Test visited link properties.
+ */
+addAccessibleTask(
+  `
+  I am a non-visited link
      
+  `,
+  async (browser, accDoc) => {
+    let link = getNativeInterface(accDoc, "link");
+    let stateChanged = waitForEvent(EVENT_STATE_CHANGE, "link");
+
+    is(link.getAttributeValue("AXVisited"), 0, "Link has not been visited");
+
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    await PlacesTestUtils.addVisits(["http://www.example.com/"]);
+
+    await stateChanged;
+    is(link.getAttributeValue("AXVisited"), 1, "Link has been visited");
+
+    // Ensure history is cleared before running
+    await PlacesUtils.history.clear();
+  }
+);
+
+function waitForLinkedChange(id, isEnabled) {
+  return waitForEvent(EVENT_STATE_CHANGE, e => {
+    e.QueryInterface(nsIAccessibleStateChangeEvent);
+    return (
+      e.state == STATE_LINKED &&
+      !e.isExtraState &&
+      isEnabled == e.isEnabled &&
+      id == getAccessibleDOMNodeID(e.accessible)
+    );
+  });
+}
+
+/**
+ * Test linked vs unlinked anchor tags
+ */
+addAccessibleTask(
+  `
+  I am a link link
+  I am a link-ish link
+  I am a non-link link
+  `,
+  async (browser, accDoc) => {
+    let link1 = getNativeInterface(accDoc, "link1");
+    is(
+      link1.getAttributeValue("AXRole"),
+      "AXLink",
+      "a[href] gets correct link role"
+    );
+    ok(
+      link1.attributeNames.includes("AXVisited"),
+      "Link has visited attribute"
+    );
+    ok(link1.attributeNames.includes("AXURL"), "Link has URL attribute");
+
+    let link2 = getNativeInterface(accDoc, "link2");
+    is(
+      link2.getAttributeValue("AXRole"),
+      "AXLink",
+      "a[onclick] gets correct link role"
+    );
+    ok(
+      link2.attributeNames.includes("AXVisited"),
+      "Link has visited attribute"
+    );
+    ok(link2.attributeNames.includes("AXURL"), "Link has URL attribute");
+
+    let link3 = getNativeInterface(accDoc, "link3");
+    is(
+      link3.getAttributeValue("AXRole"),
+      "AXGroup",
+      "bare  gets correct group role"
+    );
+
+    let stateChanged = waitForLinkedChange("link1", false);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("link1").removeAttribute("href");
+    });
+    await stateChanged;
+    is(
+      link1.getAttributeValue("AXRole"),
+      "AXGroup",
+      " stripped from href gets group role"
+    );
+
+    stateChanged = waitForLinkedChange("link2", false);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("link2").removeAttribute("onclick");
+    });
+    await stateChanged;
+    is(
+      link2.getAttributeValue("AXRole"),
+      "AXGroup",
+      " stripped from onclick gets group role"
+    );
+
+    stateChanged = waitForLinkedChange("link3", true);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("link3")
+        // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+        .setAttribute("href", "http://example.com");
+    });
+    await stateChanged;
+    is(
+      link3.getAttributeValue("AXRole"),
+      "AXLink",
+      "href added to bare a gets link role"
+    );
+
+    ok(
+      link3.attributeNames.includes("AXVisited"),
+      "Link has visited attribute"
+    );
+    ok(link3.attributeNames.includes("AXURL"), "Link has URL attribute");
+  }
+);
+
+/**
+ * Test anchors and linked ui elements attr
+ */
+addAccessibleTask(
+  `
+  I am a link
+  I am a link with an empty anchor
+  I am a link with no corresponding element
+  I am a link with a corresponding element
+  I jump to an empty element
+  I jump to a named element
+  I jump to an empty named element
+  
      I am that element
      
+  
      
+  I have a name
+  
+  
      I have no name and no ID
      
+  
      
+  `,
+  async (browser, accDoc) => {
+    let link0 = getNativeInterface(accDoc, "link0");
+    let link1 = getNativeInterface(accDoc, "link1");
+    let link2 = getNativeInterface(accDoc, "link2");
+    let link3 = getNativeInterface(accDoc, "link3");
+    let link4 = getNativeInterface(accDoc, "link4");
+    let link5 = getNativeInterface(accDoc, "link5");
+    let link6 = getNativeInterface(accDoc, "link6");
+
+    is(
+      link0.getAttributeValue("AXLinkedUIElements").length,
+      0,
+      "Link 0 has no linked UI elements"
+    );
+    is(
+      link1.getAttributeValue("AXLinkedUIElements").length,
+      0,
+      "Link 1 has no linked UI elements"
+    );
+    is(
+      link2.getAttributeValue("AXLinkedUIElements").length,
+      0,
+      "Link 2 has no linked UI elements"
+    );
+    is(
+      link3.getAttributeValue("AXLinkedUIElements").length,
+      1,
+      "Link 3 has one linked UI element"
+    );
+    is(
+      link3
+        .getAttributeValue("AXLinkedUIElements")[0]
+        .getAttributeValue("AXTitle"),
+      "I am that element",
+      "Link 3 is linked to the heading"
+    );
+    is(
+      link4.getAttributeValue("AXLinkedUIElements").length,
+      1,
+      "Link 4 has one linked UI element"
+    );
+    is(
+      link4
+        .getAttributeValue("AXLinkedUIElements")[0]
+        .getAttributeValue("AXTitle"),
+      null,
+      "Link 4 is linked to the heading"
+    );
+    is(
+      link5.getAttributeValue("AXLinkedUIElements").length,
+      1,
+      "Link 5 has one linked UI element"
+    );
+    is(
+      link5
+        .getAttributeValue("AXLinkedUIElements")[0]
+        .getAttributeValue("AXTitle"),
+      "I have a name",
+      "Link 5 is linked to a named element"
+    );
+    is(
+      link6.getAttributeValue("AXLinkedUIElements").length,
+      1,
+      "Link 6 has one linked UI element"
+    );
+    is(
+      link6
+        .getAttributeValue("AXLinkedUIElements")[0]
+        .getAttributeValue("AXTitle"),
+      "",
+      "Link 6 is linked to an empty named element"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_live_regions.js b/accessible/tests/browser/mac/browser_live_regions.js
new file mode 100644
index 0000000000..10a03120f8
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_live_regions.js
@@ -0,0 +1,165 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test live region creation and removal.
+ */
+addAccessibleTask(
+  `
+  
      Polite region
      
+  
      Assertive region
      
+  `,
+  async (browser, accDoc) => {
+    let politeRegion = getNativeInterface(accDoc, "polite");
+    ok(
+      !politeRegion.attributeNames.includes("AXARIALive"),
+      "region is not live"
+    );
+
+    let liveRegionAdded = waitForMacEvent("AXLiveRegionCreated", "polite");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("polite")
+        .setAttribute("aria-atomic", "true");
+      content.document
+        .getElementById("polite")
+        .setAttribute("aria-live", "polite");
+    });
+    await liveRegionAdded;
+    is(
+      politeRegion.getAttributeValue("AXARIALive"),
+      "polite",
+      "region is now live"
+    );
+    ok(politeRegion.getAttributeValue("AXARIAAtomic"), "region is atomic");
+    is(
+      politeRegion.getAttributeValue("AXARIARelevant"),
+      "removals",
+      "region has defined aria-relevant"
+    );
+
+    let assertiveRegion = getNativeInterface(accDoc, "assertive");
+    is(
+      assertiveRegion.getAttributeValue("AXARIALive"),
+      "assertive",
+      "region is assertive"
+    );
+    ok(
+      !assertiveRegion.getAttributeValue("AXARIAAtomic"),
+      "region is not atomic"
+    );
+    is(
+      assertiveRegion.getAttributeValue("AXARIARelevant"),
+      "additions text",
+      "region has default aria-relevant"
+    );
+
+    let liveRegionRemoved = waitForEvent(
+      EVENT_LIVE_REGION_REMOVED,
+      "assertive"
+    );
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("assertive").removeAttribute("aria-live");
+    });
+    await liveRegionRemoved;
+    ok(!assertiveRegion.getAttributeValue("AXARIALive"), "region is not live");
+
+    liveRegionAdded = waitForMacEvent("AXLiveRegionCreated", "new-region");
+    await SpecialPowers.spawn(browser, [], () => {
+      let newRegionElm = content.document.createElement("div");
+      newRegionElm.id = "new-region";
+      newRegionElm.setAttribute("aria-live", "assertive");
+      content.document.body.appendChild(newRegionElm);
+    });
+    await liveRegionAdded;
+
+    let newRegion = getNativeInterface(accDoc, "new-region");
+    is(
+      newRegion.getAttributeValue("AXARIALive"),
+      "assertive",
+      "region is assertive"
+    );
+
+    let loadComplete = Promise.all([
+      waitForMacEvent("AXLoadComplete"),
+      waitForMacEvent("AXLiveRegionCreated", "region-1"),
+      waitForMacEvent("AXLiveRegionCreated", "region-2"),
+      waitForMacEvent("AXLiveRegionCreated", "status"),
+      waitForMacEvent("AXLiveRegionCreated", "output"),
+    ]);
+
+    await SpecialPowers.spawn(browser, [], () => {
+      content.location = `data:text/html;charset=utf-8,
+        
      
+        
      
+        
      
+        
+        
      
+        `;
+    });
+    let webArea = (await loadComplete)[0];
+
+    is(webArea.getAttributeValue("AXRole"), "AXWebArea", "web area yeah");
+    const searchPred = {
+      AXSearchKey: "AXLiveRegionSearchKey",
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+    const liveRegions = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    Assert.deepEqual(
+      liveRegions.map(r => r.getAttributeValue("AXDOMIdentifier")),
+      ["region-1", "region-2", "alert", "status", "output"],
+      "SearchPredicate returned all live regions"
+    );
+  }
+);
+
+/**
+ * Test live region changes
+ */
+addAccessibleTask(
+  `
+  
      
+  The time is 4:55pm
+  
+  
+  
      
+  `,
+  async (browser, accDoc) => {
+    let liveRegionChanged = waitForMacEvent("AXLiveRegionChanged", "live");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("time").textContent = "4:56pm";
+    });
+    await liveRegionChanged;
+    ok(true, "changed textContent");
+
+    liveRegionChanged = waitForMacEvent("AXLiveRegionChanged", "live");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("p").style.display = "block";
+    });
+    await liveRegionChanged;
+    ok(true, "changed display style to block");
+
+    liveRegionChanged = waitForMacEvent("AXLiveRegionChanged", "live");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("p").style.display = "none";
+    });
+    await liveRegionChanged;
+    ok(true, "changed display style to none");
+
+    liveRegionChanged = waitForMacEvent("AXLiveRegionChanged", "live");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("button")
+        .setAttribute("aria-label", "Stop");
+    });
+    await liveRegionChanged;
+    ok(true, "changed aria-label");
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_mathml.js b/accessible/tests/browser/mac/browser_mathml.js
new file mode 100644
index 0000000000..1afaa8399f
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_mathml.js
@@ -0,0 +1,151 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+function testMathAttr(iface, attr, subrole, textLeafValue) {
+  ok(iface.attributeNames.includes(attr), `Object has ${attr} attribute`);
+  let value = iface.getAttributeValue(attr);
+  is(
+    value.getAttributeValue("AXSubrole"),
+    subrole,
+    `${attr} value has correct subrole`
+  );
+
+  if (textLeafValue) {
+    let children = value.getAttributeValue("AXChildren");
+    is(children.length, 1, `${attr} value has one child`);
+
+    is(
+      children[0].getAttributeValue("AXRole"),
+      "AXStaticText",
+      `${attr} value's child is static text`
+    );
+    is(
+      children[0].getAttributeValue("AXValue"),
+      textLeafValue,
+      `${attr} value has correct text`
+    );
+  }
+}
+
+addAccessibleTask(
+  `
+     
+      -1
+    
+    `,
+  async (browser, accDoc) => {
+    let math = getNativeInterface(accDoc, "math");
+    is(
+      math.getAttributeValue("AXSubrole"),
+      "AXDocumentMath",
+      "Math element has correct subrole"
+    );
+
+    let sqrt = getNativeInterface(accDoc, "sqrt");
+    is(
+      sqrt.getAttributeValue("AXSubrole"),
+      "AXMathSquareRoot",
+      "msqrt has correct subrole"
+    );
+
+    testMathAttr(sqrt, "AXMathRootRadicand", "AXMathIdentifier", "-1");
+  }
+);
+
+addAccessibleTask(
+  `
+    
+      x
+      3
+    
+  `,
+  async (browser, accDoc) => {
+    let root = getNativeInterface(accDoc, "root");
+    is(
+      root.getAttributeValue("AXSubrole"),
+      "AXMathRoot",
+      "mroot has correct subrole"
+    );
+
+    testMathAttr(root, "AXMathRootRadicand", "AXMathIdentifier", "x");
+    testMathAttr(root, "AXMathRootIndex", "AXMathNumber", "3");
+  }
+);
+
+addAccessibleTask(
+  `
+    
+      a
+      b
+     
+  `,
+  async (browser, accDoc) => {
+    let fraction = getNativeInterface(accDoc, "fraction");
+    is(
+      fraction.getAttributeValue("AXSubrole"),
+      "AXMathFraction",
+      "mfrac has correct subrole"
+    );
+    ok(fraction.attributeNames.includes("AXMathFractionNumerator"));
+    ok(fraction.attributeNames.includes("AXMathFractionDenominator"));
+    ok(fraction.attributeNames.includes("AXMathLineThickness"));
+
+    // Bug 1639745
+    todo_is(fraction.getAttributeValue("AXMathLineThickness"), 1);
+
+    testMathAttr(fraction, "AXMathFractionNumerator", "AXMathIdentifier", "a");
+    testMathAttr(
+      fraction,
+      "AXMathFractionDenominator",
+      "AXMathIdentifier",
+      "b"
+    );
+  }
+);
+
+addAccessibleTask(
+  `
+  
+    ∫
+    0
+    1
+  
+  `,
+  async (browser, accDoc) => {
+    let subsup = getNativeInterface(accDoc, "subsup");
+    is(
+      subsup.getAttributeValue("AXSubrole"),
+      "AXMathSubscriptSuperscript",
+      "msubsup has correct subrole"
+    );
+
+    testMathAttr(subsup, "AXMathSubscript", "AXMathNumber", "0");
+    testMathAttr(subsup, "AXMathSuperscript", "AXMathNumber", "1");
+    testMathAttr(subsup, "AXMathBase", "AXMathOperator", "∫");
+  }
+);
+
+addAccessibleTask(
+  `
+  
+    ∫
+    0
+    ∞
+  
+  `,
+  async (browser, accDoc) => {
+    let underover = getNativeInterface(accDoc, "underover");
+    is(
+      underover.getAttributeValue("AXSubrole"),
+      "AXMathUnderOver",
+      "munderover has correct subrole"
+    );
+
+    testMathAttr(underover, "AXMathUnder", "AXMathNumber", "0");
+    testMathAttr(underover, "AXMathOver", "AXMathIdentifier", "∞");
+    testMathAttr(underover, "AXMathBase", "AXMathOperator", "∫");
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_menulist.js b/accessible/tests/browser/mac/browser_menulist.js
new file mode 100644
index 0000000000..b26a0be782
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_menulist.js
@@ -0,0 +1,103 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/attributes.js */
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR },
+  { name: "attributes.js", dir: MOCHITESTS_DIR }
+);
+
+addAccessibleTask(
+  "mac/doc_menulist.xhtml",
+  async (browser, accDoc) => {
+    const menulist = getNativeInterface(accDoc, "defaultZoom");
+
+    let actions = menulist.actionNames;
+    ok(actions.includes("AXPress"), "menu has press action");
+
+    let event = waitForMacEvent("AXMenuOpened");
+    menulist.performAction("AXPress");
+    const menupopup = await event;
+
+    const menuItems = menupopup.getAttributeValue("AXChildren");
+    is(menuItems.length, 4, "Found four children in menulist");
+    is(
+      menuItems[0].getAttributeValue("AXTitle"),
+      "50%",
+      "First item has correct title"
+    );
+    is(
+      menuItems[1].getAttributeValue("AXTitle"),
+      "100%",
+      "Second item has correct title"
+    );
+    is(
+      menuItems[2].getAttributeValue("AXTitle"),
+      "150%",
+      "Third item has correct title"
+    );
+    is(
+      menuItems[3].getAttributeValue("AXTitle"),
+      "200%",
+      "Fourth item has correct title"
+    );
+  },
+  { topLevel: false, chrome: true }
+);
+
+addAccessibleTask(
+  "mac/doc_menulist.xhtml",
+  async (browser, accDoc) => {
+    const menulist = getNativeInterface(accDoc, "defaultZoom");
+
+    const actions = menulist.actionNames;
+    ok(actions.includes("AXPress"), "menu has press action");
+    let event = waitForMacEvent("AXMenuOpened");
+    menulist.performAction("AXPress");
+    await event;
+
+    const menu = menulist.getAttributeValue("AXChildren")[0];
+    ok(menu, "Menulist contains menu");
+    const children = menu.getAttributeValue("AXChildren");
+    is(children.length, 4, "Menu has 4 items");
+
+    // Menu is open, initial focus should land on the first item
+    is(
+      children[0].getAttributeValue("AXSelected"),
+      1,
+      "First menu item is selected"
+    );
+    // focus the second item, and verify it is selected
+    event = waitForMacEvent("AXFocusedUIElementChanged", (iface, data) => {
+      try {
+        return iface.getAttributeValue("AXTitle") == "100%";
+      } catch (e) {
+        return false;
+      }
+    });
+    EventUtils.synthesizeKey("KEY_ArrowDown");
+    await event;
+
+    is(
+      children[0].getAttributeValue("AXSelected"),
+      0,
+      "First menu item is no longer selected"
+    );
+    is(
+      children[1].getAttributeValue("AXSelected"),
+      1,
+      "Second menu item is selected"
+    );
+    // press the second item, check for selected event
+    event = waitForMacEvent("AXMenuItemSelected");
+    children[1].performAction("AXPress");
+    await event;
+  },
+  { topLevel: false, chrome: true }
+);
diff --git a/accessible/tests/browser/mac/browser_navigate.js b/accessible/tests/browser/mac/browser_navigate.js
new file mode 100644
index 0000000000..69486676e4
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_navigate.js
@@ -0,0 +1,394 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test navigation of same/different type content
+ */
+addAccessibleTask(
+  `
      hello
      
+  world
      
+  I am a link
+  
      goodbye
      `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXSameTypeSearchKey",
+      AXImmediateDescendantsOnly: 0,
+      AXResultsLimit: 1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const hello = getNativeInterface(accDoc, "hello");
+    const goodbye = getNativeInterface(accDoc, "goodbye");
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+
+    searchPred.AXStartElement = hello;
+
+    let sameItem = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(sameItem.length, 1, "Found one item");
+    is(
+      "goodbye",
+      sameItem[0].getAttributeValue("AXTitle"),
+      "Found correct item of same type"
+    );
+
+    searchPred.AXDirection = "AXDirectionPrevious";
+    searchPred.AXStartElement = goodbye;
+    sameItem = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(sameItem.length, 1, "Found one item");
+    is(
+      "hello",
+      sameItem[0].getAttributeValue("AXTitle"),
+      "Found correct item of same type"
+    );
+
+    searchPred.AXSearchKey = "AXDifferentTypeSearchKey";
+    let diffItem = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(diffItem.length, 1, "Found one item");
+    is(
+      "I am a link",
+      diffItem[0].getAttributeValue("AXValue"),
+      "Found correct item of different type"
+    );
+  }
+);
+
+/**
+ * Test navigation of heading levels
+ */
+addAccessibleTask(
+  `
+  
      a
      
+  
      b
      
+  
      c
      
+  
      d
      
+  
      e
      
+  
      f
      
+  
      g
      
+  
      h
      
+  
      i
      
+  
      j
      
+  
      k
      
+  
      l
      
+  this is some regular text that should be ignored
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXHeadingLevel1SearchKey",
+      AXImmediateDescendantsOnly: 0,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+
+    let h1Count = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(2, h1Count, "Found two h1 items");
+
+    let h1s = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const a = getNativeInterface(accDoc, "a");
+    const g = getNativeInterface(accDoc, "g");
+
+    is(
+      a.getAttributeValue("AXValue"),
+      h1s[0].getAttributeValue("AXValue"),
+      "Found correct h1 heading"
+    );
+
+    is(
+      g.getAttributeValue("AXValue"),
+      h1s[1].getAttributeValue("AXValue"),
+      "Found correct h1 heading"
+    );
+
+    searchPred.AXSearchKey = "AXHeadingLevel2SearchKey";
+
+    let h2Count = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(2, h2Count, "Found two h2 items");
+
+    let h2s = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const b = getNativeInterface(accDoc, "b");
+    const h = getNativeInterface(accDoc, "h");
+
+    is(
+      b.getAttributeValue("AXValue"),
+      h2s[0].getAttributeValue("AXValue"),
+      "Found correct h2 heading"
+    );
+
+    is(
+      h.getAttributeValue("AXValue"),
+      h2s[1].getAttributeValue("AXValue"),
+      "Found correct h2 heading"
+    );
+
+    searchPred.AXSearchKey = "AXHeadingLevel3SearchKey";
+
+    let h3Count = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(2, h3Count, "Found two h3 items");
+
+    let h3s = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const c = getNativeInterface(accDoc, "c");
+    const i = getNativeInterface(accDoc, "i");
+
+    is(
+      c.getAttributeValue("AXValue"),
+      h3s[0].getAttributeValue("AXValue"),
+      "Found correct h3 heading"
+    );
+
+    is(
+      i.getAttributeValue("AXValue"),
+      h3s[1].getAttributeValue("AXValue"),
+      "Found correct h3 heading"
+    );
+
+    searchPred.AXSearchKey = "AXHeadingLevel4SearchKey";
+
+    let h4Count = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(2, h4Count, "Found two h4 items");
+
+    let h4s = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const d = getNativeInterface(accDoc, "d");
+    const j = getNativeInterface(accDoc, "j");
+
+    is(
+      d.getAttributeValue("AXValue"),
+      h4s[0].getAttributeValue("AXValue"),
+      "Found correct h4 heading"
+    );
+
+    is(
+      j.getAttributeValue("AXValue"),
+      h4s[1].getAttributeValue("AXValue"),
+      "Found correct h4 heading"
+    );
+
+    searchPred.AXSearchKey = "AXHeadingLevel5SearchKey";
+
+    let h5Count = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(2, h5Count, "Found two h5 items");
+
+    let h5s = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const e = getNativeInterface(accDoc, "e");
+    const k = getNativeInterface(accDoc, "k");
+
+    is(
+      e.getAttributeValue("AXValue"),
+      h5s[0].getAttributeValue("AXValue"),
+      "Found correct h5 heading"
+    );
+
+    is(
+      k.getAttributeValue("AXValue"),
+      h5s[1].getAttributeValue("AXValue"),
+      "Found correct h5 heading"
+    );
+
+    searchPred.AXSearchKey = "AXHeadingLevel6SearchKey";
+
+    let h6Count = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(2, h6Count, "Found two h6 items");
+
+    let h6s = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const f = getNativeInterface(accDoc, "f");
+    const l = getNativeInterface(accDoc, "l");
+
+    is(
+      f.getAttributeValue("AXValue"),
+      h6s[0].getAttributeValue("AXValue"),
+      "Found correct h6 heading"
+    );
+
+    is(
+      l.getAttributeValue("AXValue"),
+      h6s[1].getAttributeValue("AXValue"),
+      "Found correct h6 heading"
+    );
+  }
+);
+
+/*
+ * Test rotor with blockquotes
+ */
+addAccessibleTask(
+  `
+  
      hello I am a blockquote
      
+  
      
+    I am also a blockquote of the same level
+    
      
+    
      but I have a different level
      
+  
      
+  `,
+  (browser, accDoc) => {
+    let searchPred = {
+      AXSearchKey: "AXBlockquoteSearchKey",
+      AXImmediateDescendantsOnly: 0,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    let bquotes = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(bquotes.length, 3, "Found three blockquotes");
+
+    const first = getNativeInterface(accDoc, "first");
+    const second = getNativeInterface(accDoc, "second");
+    const third = getNativeInterface(accDoc, "third");
+    console.log("values :");
+    console.log(first.getAttributeValue("AXValue"));
+    is(
+      first.getAttributeValue("AXValue"),
+      bquotes[0].getAttributeValue("AXValue"),
+      "Found correct first blockquote"
+    );
+
+    is(
+      second.getAttributeValue("AXValue"),
+      bquotes[1].getAttributeValue("AXValue"),
+      "Found correct second blockquote"
+    );
+
+    is(
+      third.getAttributeValue("AXValue"),
+      bquotes[2].getAttributeValue("AXValue"),
+      "Found correct third blockquote"
+    );
+  }
+);
+
+/*
+ * Test rotor with graphics
+ */
+addAccessibleTask(
+  `
+  image one
      
+  
+    image two
+  
+  
+  `,
+  (browser, accDoc) => {
+    let searchPred = {
+      AXSearchKey: "AXGraphicSearchKey",
+      AXImmediateDescendantsOnly: 0,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    let images = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(images.length, 3, "Found three images");
+
+    const img1 = getNativeInterface(accDoc, "img1");
+    const img2 = getNativeInterface(accDoc, "img2");
+    const img3 = getNativeInterface(accDoc, "img3");
+
+    is(
+      img1.getAttributeValue("AXDescription"),
+      images[0].getAttributeValue("AXDescription"),
+      "Found correct image"
+    );
+
+    is(
+      img2.getAttributeValue("AXDescription"),
+      images[1].getAttributeValue("AXDescription"),
+      "Found correct image"
+    );
+
+    is(
+      img3.getAttributeValue("AXDescription"),
+      images[2].getAttributeValue("AXDescription"),
+      "Found correct image"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_outline.js b/accessible/tests/browser/mac/browser_outline.js
new file mode 100644
index 0000000000..ba211fdf4b
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_outline.js
@@ -0,0 +1,566 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/states.js */
+loadScripts({ name: "states.js", dir: MOCHITESTS_DIR });
+
+/**
+ * Test outline, outline rows with computed properties
+ */
+addAccessibleTask(
+  `
+  
      
+    Foods
+  
      
+  
        
+    
+    
+  
      
+  `,
+  async (browser, accDoc) => {
+    const outline = getNativeInterface(accDoc, "outline");
+    is(
+      outline.getAttributeValue("AXRole"),
+      "AXOutline",
+      "Correct role for outline"
+    );
+
+    const outChildren = outline.getAttributeValue("AXChildren");
+    is(outChildren.length, 2, "Outline has two direct children");
+    is(outChildren[0].getAttributeValue("AXSubrole"), "AXOutlineRow");
+    is(outChildren[1].getAttributeValue("AXSubrole"), "AXOutlineRow");
+
+    const outRows = outline.getAttributeValue("AXRows");
+    is(outRows.length, 4, "Outline has four rows");
+    is(
+      outRows[0].getAttributeValue("AXDisclosing"),
+      0,
+      "Row is not disclosing"
+    );
+    is(
+      outRows[0].getAttributeValue("AXDisclosedByRow"),
+      null,
+      "Row is direct child of outline"
+    );
+    is(
+      outRows[0].getAttributeValue("AXDisclosedRows").length,
+      0,
+      "Row has no row children, only group"
+    );
+    is(
+      outRows[0].getAttributeValue("AXDisclosureLevel"),
+      0,
+      "Row is level zero"
+    );
+
+    is(outRows[1].getAttributeValue("AXDisclosing"), 1, "Row is disclosing");
+    is(
+      outRows[1].getAttributeValue("AXDisclosedByRow"),
+      null,
+      "Row is direct child of group"
+    );
+    is(
+      outRows[1].getAttributeValue("AXDisclosedRows").length,
+      0,
+      "Row has no row children"
+    );
+    is(
+      outRows[1].getAttributeValue("AXDisclosureLevel"),
+      0,
+      "Row is level zero"
+    );
+
+    is(
+      outRows[2].getAttributeValue("AXDisclosing"),
+      0,
+      "Row is not disclosing"
+    );
+    is(
+      outRows[2].getAttributeValue("AXDisclosedByRow"),
+      null,
+      "Row is direct child of outline"
+    );
+    is(
+      outRows[2].getAttributeValue("AXDisclosedRows").length,
+      1,
+      "Row has one row child"
+    );
+    is(
+      outRows[2].getAttributeValue("AXDisclosureLevel"),
+      0,
+      "Row is level zero"
+    );
+
+    is(outRows[3].getAttributeValue("AXDisclosing"), 1, "Row is disclosing");
+    is(
+      outRows[3]
+        .getAttributeValue("AXDisclosedByRow")
+        .getAttributeValue("AXDescription"),
+      outRows[2].getAttributeValue("AXDescription"),
+      "Row is direct child of row[2]"
+    );
+    is(
+      outRows[3].getAttributeValue("AXDisclosedRows").length,
+      0,
+      "Row has no row children"
+    );
+    is(
+      outRows[3].getAttributeValue("AXDisclosureLevel"),
+      1,
+      "Row is level one"
+    );
+
+    let evt = waitForMacEvent("AXRowExpanded", "vegetables");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("vegetables")
+        .setAttribute("aria-expanded", "true");
+    });
+    await evt;
+    is(
+      outRows[2].getAttributeValue("AXDisclosing"),
+      1,
+      "Row is disclosing after being expanded"
+    );
+
+    evt = waitForMacEvent("AXRowCollapsed", "vegetables");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("vegetables")
+        .setAttribute("aria-expanded", "false");
+    });
+    await evt;
+    is(
+      outRows[2].getAttributeValue("AXDisclosing"),
+      0,
+      "Row is not disclosing after being collapsed again"
+    );
+  }
+);
+
+/**
+ * Test outline, outline rows with declared properties
+ */
+addAccessibleTask(
+  `
+  
      
+  Foods
+  
      
+  
        
+    
+    
+  
      
+  `,
+  async (browser, accDoc) => {
+    const outline = getNativeInterface(accDoc, "outline");
+    is(
+      outline.getAttributeValue("AXRole"),
+      "AXOutline",
+      "Correct role for outline"
+    );
+
+    const outChildren = outline.getAttributeValue("AXChildren");
+    is(outChildren.length, 2, "Outline has two direct children");
+    is(outChildren[0].getAttributeValue("AXSubrole"), "AXOutlineRow");
+    is(outChildren[1].getAttributeValue("AXSubrole"), "AXOutlineRow");
+
+    const outRows = outline.getAttributeValue("AXRows");
+    is(outRows.length, 9, "Outline has nine rows");
+    is(
+      outRows[0].getAttributeValue("AXDisclosing"),
+      0,
+      "Row is not disclosing"
+    );
+    is(
+      outRows[0].getAttributeValue("AXDisclosedByRow"),
+      null,
+      "Row is direct child of outline"
+    );
+    is(
+      outRows[0].getAttributeValue("AXDisclosedRows").length,
+      0,
+      "Row has no direct row children, has list"
+    );
+    is(
+      outRows[0].getAttributeValue("AXDisclosureLevel"),
+      0,
+      "Row is level zero"
+    );
+
+    is(outRows[2].getAttributeValue("AXDisclosing"), 1, "Row is disclosing");
+    is(
+      outRows[2].getAttributeValue("AXDisclosedByRow"),
+      null,
+      "Row is direct child of group"
+    );
+    is(
+      outRows[2].getAttributeValue("AXDisclosedRows").length,
+      2,
+      "Row has two row children"
+    );
+    is(
+      outRows[2].getAttributeValue("AXDisclosureLevel"),
+      1,
+      "Row is level one"
+    );
+
+    is(
+      outRows[3].getAttributeValue("AXDisclosing"),
+      0,
+      "Row is not disclosing"
+    );
+    is(
+      outRows[3]
+        .getAttributeValue("AXDisclosedByRow")
+        .getAttributeValue("AXDescription"),
+      outRows[2].getAttributeValue("AXDescription"),
+      "Row is direct child of row 2"
+    );
+
+    is(
+      outRows[3].getAttributeValue("AXDisclosedRows").length,
+      0,
+      "Row has no row children"
+    );
+    is(
+      outRows[3].getAttributeValue("AXDisclosureLevel"),
+      2,
+      "Row is level two"
+    );
+
+    is(
+      outRows[5].getAttributeValue("AXDisclosing"),
+      0,
+      "Row is not disclosing"
+    );
+    is(
+      outRows[5].getAttributeValue("AXDisclosedByRow"),
+      null,
+      "Row is direct child of outline"
+    );
+    is(
+      outRows[5].getAttributeValue("AXDisclosedRows").length,
+      1,
+      "Row has no one row child"
+    );
+    is(
+      outRows[5].getAttributeValue("AXDisclosureLevel"),
+      0,
+      "Row is level zero"
+    );
+
+    is(outRows[6].getAttributeValue("AXDisclosing"), 1, "Row is disclosing");
+    is(
+      outRows[6]
+        .getAttributeValue("AXDisclosedByRow")
+        .getAttributeValue("AXDescription"),
+      outRows[5].getAttributeValue("AXDescription"),
+      "Row is direct child of row 5"
+    );
+    is(
+      outRows[6].getAttributeValue("AXDisclosedRows").length,
+      2,
+      "Row has two row children"
+    );
+    is(
+      outRows[6].getAttributeValue("AXDisclosureLevel"),
+      1,
+      "Row is level one"
+    );
+
+    is(
+      outRows[7].getAttributeValue("AXDisclosing"),
+      0,
+      "Row is not disclosing"
+    );
+    is(
+      outRows[7]
+        .getAttributeValue("AXDisclosedByRow")
+        .getAttributeValue("AXDescription"),
+      outRows[6].getAttributeValue("AXDescription"),
+      "Row is direct child of row 6"
+    );
+    is(
+      outRows[7].getAttributeValue("AXDisclosedRows").length,
+      0,
+      "Row has no row children"
+    );
+    is(
+      outRows[7].getAttributeValue("AXDisclosureLevel"),
+      2,
+      "Row is level two"
+    );
+  }
+);
+
+// Test outline that isn't built with li/uls gets correct desc
+addAccessibleTask(
+  `
+  
      
+    
+    
+  
      
+  `,
+  async (browser, accDoc) => {
+    const tree = getNativeInterface(accDoc, "tree");
+    is(tree.getAttributeValue("AXRole"), "AXOutline", "Correct role for tree");
+
+    const treeItems = tree.getAttributeValue("AXChildren");
+    is(treeItems.length, 2, "Outline has two direct children");
+    is(treeItems[0].getAttributeValue("AXSubrole"), "AXOutlineRow");
+    is(treeItems[1].getAttributeValue("AXSubrole"), "AXOutlineRow");
+
+    const outRows = tree.getAttributeValue("AXRows");
+    is(outRows.length, 2, "Outline has two rows");
+
+    is(
+      outRows[0].getAttributeValue("AXDescription"),
+      "My files",
+      "files labelled correctly"
+    );
+    is(
+      outRows[1].getAttributeValue("AXDescription"),
+      "Shared items",
+      "shared items labelled correctly"
+    );
+  }
+);
+
+// Test outline registers AXDisclosed attr as settable
+addAccessibleTask(
+  `
+  
      
+    
+    
      Shared items
      
+  
      
+  `,
+  async (browser, accDoc) => {
+    const tree = getNativeInterface(accDoc, "tree");
+    const treeItems = tree.getAttributeValue("AXChildren");
+
+    is(treeItems.length, 2, "Outline has two direct children");
+    is(treeItems[0].getAttributeValue("AXDisclosing"), 0);
+    is(treeItems[1].getAttributeValue("AXDisclosing"), 1);
+
+    is(treeItems[0].isAttributeSettable("AXDisclosing"), true);
+    is(treeItems[1].isAttributeSettable("AXDisclosing"), true);
+
+    // attempt to change attribute values
+    treeItems[0].setAttributeValue("AXDisclosing", 1);
+    treeItems[0].setAttributeValue("AXDisclosing", 0);
+
+    // verify they're unchanged
+    is(treeItems[0].getAttributeValue("AXDisclosing"), 0);
+    is(treeItems[1].getAttributeValue("AXDisclosing"), 1);
+  }
+);
+
+// Test outline rows correctly expose checkable, checked/unchecked/mixed status
+addAccessibleTask(
+  `
+  
      
+    
      
+      Leaf 1
+    
      
+    
      
+      Leaf 2
+    
      
+    
      
+      Leaf 3
+    
      
+    
      
+      Leaf 4
+    
      
+  
      
+
+  `,
+  async (browser, accDoc) => {
+    const tree = getNativeInterface(accDoc, "tree");
+    const treeItems = tree.getAttributeValue("AXChildren");
+
+    is(treeItems.length, 4, "Outline has four direct children");
+    is(
+      treeItems[0].getAttributeValue("AXValue"),
+      0,
+      "Child one is not checked"
+    );
+    is(treeItems[1].getAttributeValue("AXValue"), 1, "Child two is checked");
+    is(
+      treeItems[2].getAttributeValue("AXValue"),
+      null,
+      "Child three is not checkable and has no val"
+    );
+    is(treeItems[3].getAttributeValue("AXValue"), 2, "Child four is mixed");
+
+    let stateChanged = Promise.all([
+      waitForMacEvent("AXValueChanged", "l1"),
+      waitForStateChange("l1", STATE_CHECKED, true),
+    ]);
+    // We should get a state change event for checked.
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("l1")
+        .setAttribute("aria-checked", "true");
+    });
+    await stateChanged;
+    is(treeItems[0].getAttributeValue("AXValue"), 1, "Child one is checked");
+
+    stateChanged = Promise.all([
+      waitForMacEvent("AXValueChanged", "l2"),
+      waitForMacEvent("AXValueChanged", "l2"),
+      waitForStateChange("l2", STATE_CHECKED, false),
+      waitForStateChange("l2", STATE_CHECKABLE, false),
+    ]);
+    // We should get a state change event for both checked and checkable,
+    // and value changes for both.
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("l2").removeAttribute("aria-checked");
+    });
+    await stateChanged;
+    is(
+      treeItems[1].getAttributeValue("AXValue"),
+      null,
+      "Child two is not checkable and has no val"
+    );
+
+    stateChanged = Promise.all([
+      waitForMacEvent("AXValueChanged", "l3"),
+      waitForMacEvent("AXValueChanged", "l3"),
+      waitForStateChange("l3", STATE_CHECKED, true),
+      waitForStateChange("l3", STATE_CHECKABLE, true),
+    ]);
+    // We should get a state change event for both checked and checkable,
+    // and value changes for each.
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("l3")
+        .setAttribute("aria-checked", "true");
+    });
+    await stateChanged;
+    is(treeItems[2].getAttributeValue("AXValue"), 1, "Child three is checked");
+
+    stateChanged = Promise.all([
+      waitForMacEvent("AXValueChanged", "l4"),
+      waitForMacEvent("AXValueChanged", "l4"),
+      waitForStateChange("l4", STATE_MIXED, false),
+      waitForStateChange("l4", STATE_CHECKABLE, false),
+    ]);
+    // We should get a state change event for both mixed and checkable,
+    // and value changes for each.
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("l4").removeAttribute("aria-checked");
+    });
+    await stateChanged;
+    is(
+      treeItems[3].getAttributeValue("AXValue"),
+      null,
+      "Child four is not checkable and has no value"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_outline_xul.js b/accessible/tests/browser/mac/browser_outline_xul.js
new file mode 100644
index 0000000000..66eebebf50
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_outline_xul.js
@@ -0,0 +1,274 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/attributes.js */
+loadScripts({ name: "attributes.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  "mac/doc_tree.xhtml",
+  async (browser, accDoc) => {
+    const tree = getNativeInterface(accDoc, "tree");
+    is(
+      tree.getAttributeValue("AXRole"),
+      "AXOutline",
+      "Found tree with role outline"
+    );
+    // XUL trees store all rows as direct children of the outline,
+    // so we should see nine here instead of just three:
+    // (Groceries, Fruits, Veggies)
+    const treeChildren = tree.getAttributeValue("AXChildren");
+    is(treeChildren.length, 9, "Found nine direct children");
+
+    const treeCols = tree.getAttributeValue("AXColumns");
+    is(treeCols.length, 1, "Found one column in tree");
+
+    // Here, we should get only outline rows, not the title
+    const treeRows = tree.getAttributeValue("AXRows");
+    is(treeRows.length, 8, "Found 8 total rows");
+
+    is(
+      treeRows[0].getAttributeValue("AXDescription"),
+      "Fruits",
+      "Located correct first row, row has correct desc"
+    );
+    is(
+      treeRows[0].getAttributeValue("AXDisclosing"),
+      1,
+      "Fruits is disclosing"
+    );
+    is(
+      treeRows[0].getAttributeValue("AXDisclosedByRow"),
+      null,
+      "Fruits is disclosed by outline"
+    );
+    is(
+      treeRows[0].getAttributeValue("AXDisclosureLevel"),
+      0,
+      "Fruits is level zero"
+    );
+    let disclosedRows = treeRows[0].getAttributeValue("AXDisclosedRows");
+    is(disclosedRows.length, 2, "Fruits discloses two rows");
+    is(
+      disclosedRows[0].getAttributeValue("AXDescription"),
+      "Apple",
+      "fruits discloses apple"
+    );
+    is(
+      disclosedRows[1].getAttributeValue("AXDescription"),
+      "Orange",
+      "fruits discloses orange"
+    );
+
+    is(
+      treeRows[1].getAttributeValue("AXDescription"),
+      "Apple",
+      "Located correct second row, row has correct desc"
+    );
+    is(
+      treeRows[1].getAttributeValue("AXDisclosing"),
+      0,
+      "Apple is not disclosing"
+    );
+    is(
+      treeRows[1]
+        .getAttributeValue("AXDisclosedByRow")
+        .getAttributeValue("AXDescription"),
+      "Fruits",
+      "Apple is disclosed by fruits"
+    );
+    is(
+      treeRows[1].getAttributeValue("AXDisclosureLevel"),
+      1,
+      "Apple is level one"
+    );
+    is(
+      treeRows[1].getAttributeValue("AXDisclosedRows").length,
+      0,
+      "Apple does not disclose rows"
+    );
+
+    is(
+      treeRows[2].getAttributeValue("AXDescription"),
+      "Orange",
+      "Located correct third row, row has correct desc"
+    );
+    is(
+      treeRows[2].getAttributeValue("AXDisclosing"),
+      0,
+      "Orange is not disclosing"
+    );
+    is(
+      treeRows[2]
+        .getAttributeValue("AXDisclosedByRow")
+        .getAttributeValue("AXDescription"),
+      "Fruits",
+      "Orange is disclosed by fruits"
+    );
+    is(
+      treeRows[2].getAttributeValue("AXDisclosureLevel"),
+      1,
+      "Orange is level one"
+    );
+    is(
+      treeRows[2].getAttributeValue("AXDisclosedRows").length,
+      0,
+      "Orange does not disclose rows"
+    );
+
+    is(
+      treeRows[3].getAttributeValue("AXDescription"),
+      "Veggies",
+      "Located correct fourth row, row has correct desc"
+    );
+    is(
+      treeRows[3].getAttributeValue("AXDisclosing"),
+      1,
+      "Veggies is disclosing"
+    );
+    is(
+      treeRows[3].getAttributeValue("AXDisclosedByRow"),
+      null,
+      "Veggies is disclosed by outline"
+    );
+    is(
+      treeRows[3].getAttributeValue("AXDisclosureLevel"),
+      0,
+      "Veggies is level zero"
+    );
+    disclosedRows = treeRows[3].getAttributeValue("AXDisclosedRows");
+    is(disclosedRows.length, 2, "Veggies discloses two rows");
+    is(
+      disclosedRows[0].getAttributeValue("AXDescription"),
+      "Green Veggies",
+      "Veggies discloses green veggies"
+    );
+    is(
+      disclosedRows[1].getAttributeValue("AXDescription"),
+      "Squash",
+      "Veggies discloses squash"
+    );
+
+    is(
+      treeRows[4].getAttributeValue("AXDescription"),
+      "Green Veggies",
+      "Located correct fifth row, row has correct desc"
+    );
+    is(
+      treeRows[4].getAttributeValue("AXDisclosing"),
+      1,
+      "Green veggies is disclosing"
+    );
+    is(
+      treeRows[4]
+        .getAttributeValue("AXDisclosedByRow")
+        .getAttributeValue("AXDescription"),
+      "Veggies",
+      "Green Veggies is disclosed by veggies"
+    );
+    is(
+      treeRows[4].getAttributeValue("AXDisclosureLevel"),
+      1,
+      "Green veggies is level one"
+    );
+    disclosedRows = treeRows[4].getAttributeValue("AXDisclosedRows");
+    is(disclosedRows.length, 2, "Green veggies has two rows");
+    is(
+      disclosedRows[0].getAttributeValue("AXDescription"),
+      "Spinach",
+      "Green veggies discloses spinach"
+    );
+    is(
+      disclosedRows[1].getAttributeValue("AXDescription"),
+      "Peas",
+      "Green veggies discloses peas"
+    );
+
+    is(
+      treeRows[5].getAttributeValue("AXDescription"),
+      "Spinach",
+      "Located correct sixth row, row has correct desc"
+    );
+    is(
+      treeRows[5].getAttributeValue("AXDisclosing"),
+      0,
+      "Spinach is not disclosing"
+    );
+    is(
+      treeRows[5]
+        .getAttributeValue("AXDisclosedByRow")
+        .getAttributeValue("AXDescription"),
+      "Green Veggies",
+      "Spinach is disclosed by green veggies"
+    );
+    is(
+      treeRows[5].getAttributeValue("AXDisclosureLevel"),
+      2,
+      "Spinach is level two"
+    );
+    is(
+      treeRows[5].getAttributeValue("AXDisclosedRows").length,
+      0,
+      "Spinach does not disclose rows"
+    );
+
+    is(
+      treeRows[6].getAttributeValue("AXDescription"),
+      "Peas",
+      "Located correct seventh row, row has correct desc"
+    );
+    is(
+      treeRows[6].getAttributeValue("AXDisclosing"),
+      0,
+      "Peas is not disclosing"
+    );
+    is(
+      treeRows[6]
+        .getAttributeValue("AXDisclosedByRow")
+        .getAttributeValue("AXDescription"),
+      "Green Veggies",
+      "Peas is disclosed by green veggies"
+    );
+    is(
+      treeRows[6].getAttributeValue("AXDisclosureLevel"),
+      2,
+      "Peas is level two"
+    );
+    is(
+      treeRows[6].getAttributeValue("AXDisclosedRows").length,
+      0,
+      "Peas does not disclose rows"
+    );
+
+    is(
+      treeRows[7].getAttributeValue("AXDescription"),
+      "Squash",
+      "Located correct eighth row, row has correct desc"
+    );
+    is(
+      treeRows[7].getAttributeValue("AXDisclosing"),
+      0,
+      "Squash is not disclosing"
+    );
+    is(
+      treeRows[7]
+        .getAttributeValue("AXDisclosedByRow")
+        .getAttributeValue("AXDescription"),
+      "Veggies",
+      "Squash is disclosed by veggies"
+    );
+    is(
+      treeRows[7].getAttributeValue("AXDisclosureLevel"),
+      1,
+      "Squash is level one"
+    );
+    is(
+      treeRows[7].getAttributeValue("AXDisclosedRows").length,
+      0,
+      "Squash does not disclose rows"
+    );
+  },
+  { topLevel: false, chrome: true }
+);
diff --git a/accessible/tests/browser/mac/browser_popupbutton.js b/accessible/tests/browser/mac/browser_popupbutton.js
new file mode 100644
index 0000000000..2d5ff1ac35
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_popupbutton.js
@@ -0,0 +1,166 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+// Test dropdown select element
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    // Test combobox
+    let select = getNativeInterface(accDoc, "select");
+    is(
+      select.getAttributeValue("AXRole"),
+      "AXPopUpButton",
+      "select has AXPopupButton role"
+    );
+    ok(select.attributeNames.includes("AXValue"), "select advertises AXValue");
+    is(
+      select.getAttributeValue("AXValue"),
+      "One",
+      "select has correctt initial value"
+    );
+    ok(
+      !select.attributeNames.includes("AXHasPopup"),
+      "select does not advertise AXHasPopup"
+    );
+    is(
+      select.getAttributeValue("AXHasPopup"),
+      null,
+      "select does not provide value for AXHasPopup"
+    );
+
+    ok(select.actionNames.includes("AXPress"), "Selectt has press action");
+    // These four events happen in quick succession when select is pressed
+    let events = Promise.all([
+      waitForMacEvent("AXMenuOpened"),
+      waitForMacEvent("AXSelectedChildrenChanged"),
+      waitForMacEvent(
+        "AXFocusedUIElementChanged",
+        e => e.getAttributeValue("AXRole") == "AXPopUpButton"
+      ),
+      waitForMacEvent(
+        "AXFocusedUIElementChanged",
+        e => e.getAttributeValue("AXRole") == "AXMenuItem"
+      ),
+    ]);
+    select.performAction("AXPress");
+    // Only capture the target of AXMenuOpened (first element)
+    let [menu] = await events;
+
+    is(menu.getAttributeValue("AXRole"), "AXMenu", "dropdown has AXMenu role");
+    is(
+      menu.getAttributeValue("AXSelectedChildren").length,
+      1,
+      "dropdown has single selected child"
+    );
+
+    let selectedChildren = menu.getAttributeValue("AXSelectedChildren");
+    is(selectedChildren.length, 1, "Only one child is selected");
+    is(selectedChildren[0].getAttributeValue("AXRole"), "AXMenuItem");
+    is(selectedChildren[0].getAttributeValue("AXTitle"), "One");
+
+    let menuParent = menu.getAttributeValue("AXParent");
+    is(
+      menuParent.getAttributeValue("AXRole"),
+      "AXPopUpButton",
+      "dropdown parent is a popup button"
+    );
+
+    let menuItems = menu.getAttributeValue("AXChildren").map(c => {
+      return [
+        c.getAttributeValue("AXMenuItemMarkChar"),
+        c.getAttributeValue("AXRole"),
+        c.getAttributeValue("AXTitle"),
+        c.getAttributeValue("AXEnabled"),
+      ];
+    });
+
+    Assert.deepEqual(
+      menuItems,
+      [
+        ["✓", "AXMenuItem", "One", true],
+        [null, "AXMenuItem", "Two", true],
+        [null, "AXMenuItem", "Three", true],
+        [null, "AXMenuItem", "Four", false],
+      ],
+      "Menu items have correct checkmark on current value, correctt roles, correct titles, and correct AXEnabled value"
+    );
+
+    events = Promise.all([
+      waitForMacEvent("AXSelectedChildrenChanged"),
+      waitForMacEvent("AXFocusedUIElementChanged"),
+    ]);
+    EventUtils.synthesizeKey("KEY_ArrowDown");
+    let [, menuItem] = await events;
+    is(
+      menuItem.getAttributeValue("AXTitle"),
+      "Two",
+      "Focused menu item has correct title"
+    );
+
+    selectedChildren = menu.getAttributeValue("AXSelectedChildren");
+    is(selectedChildren.length, 1, "Only one child is selected");
+    is(
+      selectedChildren[0].getAttributeValue("AXTitle"),
+      "Two",
+      "Selected child matches focused item"
+    );
+
+    events = Promise.all([
+      waitForMacEvent("AXSelectedChildrenChanged"),
+      waitForMacEvent("AXFocusedUIElementChanged"),
+    ]);
+    EventUtils.synthesizeKey("KEY_ArrowDown");
+    [, menuItem] = await events;
+    is(
+      menuItem.getAttributeValue("AXTitle"),
+      "Three",
+      "Focused menu item has correct title"
+    );
+
+    selectedChildren = menu.getAttributeValue("AXSelectedChildren");
+    is(selectedChildren.length, 1, "Only one child is selected");
+    is(
+      selectedChildren[0].getAttributeValue("AXTitle"),
+      "Three",
+      "Selected child matches focused item"
+    );
+
+    events = Promise.all([
+      waitForMacEvent("AXMenuClosed"),
+      waitForMacEvent("AXFocusedUIElementChanged"),
+      waitForMacEvent("AXSelectedChildrenChanged"),
+    ]);
+    menuItem.performAction("AXPress");
+    let [, newFocus] = await events;
+    is(
+      newFocus.getAttributeValue("AXRole"),
+      "AXPopUpButton",
+      "Newly focused element is AXPopupButton"
+    );
+    is(
+      newFocus.getAttributeValue("AXDOMIdentifier"),
+      "select",
+      "Should return focus to select"
+    );
+    is(
+      newFocus.getAttributeValue("AXValue"),
+      "Three",
+      "select has correct new value"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_radio_position.js b/accessible/tests/browser/mac/browser_radio_position.js
new file mode 100644
index 0000000000..76f518a91e
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_radio_position.js
@@ -0,0 +1,321 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+function getChildRoles(parent) {
+  return parent
+    .getAttributeValue("AXChildren")
+    .map(c => c.getAttributeValue("AXRole"));
+}
+
+function getLinkedTitles(element) {
+  return element
+    .getAttributeValue("AXLinkedUIElements")
+    .map(c => c.getAttributeValue("AXTitle"));
+}
+
+/**
+ * Test radio group
+ */
+addAccessibleTask(
+  `
      
+    
+    
+    
+  
      `,
+  async (browser, accDoc) => {
+    let item1 = getNativeInterface(accDoc, "radioGroupItem1");
+    let item2 = getNativeInterface(accDoc, "radioGroupItem2");
+    let item3 = getNativeInterface(accDoc, "radioGroupItem3");
+    let titleList = ["Regular crust", "Deep dish", "Thin crust"];
+
+    Assert.deepEqual(
+      titleList,
+      [item1, item2, item3].map(c => c.getAttributeValue("AXTitle")),
+      "Title list matches"
+    );
+
+    let linkedElems = item1.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 3, "Item 1 has three linked UI elems");
+    Assert.deepEqual(
+      getLinkedTitles(item1),
+      titleList,
+      "Item one has correctly ordered linked elements"
+    );
+
+    linkedElems = item2.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 3, "Item 2 has three linked UI elems");
+    Assert.deepEqual(
+      getLinkedTitles(item2),
+      titleList,
+      "Item two has correctly ordered linked elements"
+    );
+
+    linkedElems = item3.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 3, "Item 3 has three linked UI elems");
+    Assert.deepEqual(
+      getLinkedTitles(item3),
+      titleList,
+      "Item three has correctly ordered linked elements"
+    );
+  }
+);
+
+/**
+ * Test dynamic add to a radio group
+ */
+addAccessibleTask(
+  `
      
+    
+  
      `,
+  async (browser, accDoc) => {
+    let item1 = getNativeInterface(accDoc, "radioGroupItem1");
+    let linkedElems = item1.getAttributeValue("AXLinkedUIElements");
+
+    is(linkedElems.length, 1, "Item 1 has one linked UI elem");
+    is(
+      linkedElems[0].getAttributeValue("AXTitle"),
+      item1.getAttributeValue("AXTitle"),
+      "Item 1 is first element"
+    );
+
+    let reorder = waitForEvent(EVENT_REORDER, "radioGroup");
+    await SpecialPowers.spawn(browser, [], () => {
+      let d = content.document.createElement("div");
+      d.setAttribute("role", "radio");
+      content.document.getElementById("radioGroup").appendChild(d);
+    });
+    await reorder;
+
+    let radioGroup = getNativeInterface(accDoc, "radioGroup");
+    let groupMembers = radioGroup.getAttributeValue("AXChildren");
+    is(groupMembers.length, 2, "Radio group has two members");
+    let item2 = groupMembers[1];
+    item1 = getNativeInterface(accDoc, "radioGroupItem1");
+    let titleList = ["Option One", ""];
+
+    Assert.deepEqual(
+      titleList,
+      [item1, item2].map(c => c.getAttributeValue("AXTitle")),
+      "Title list matches"
+    );
+
+    linkedElems = item1.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 2, "Item 1 has two linked UI elems");
+    Assert.deepEqual(
+      getLinkedTitles(item1),
+      titleList,
+      "Item one has correctly ordered linked elements"
+    );
+
+    linkedElems = item2.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 2, "Item 2 has two linked UI elems");
+    Assert.deepEqual(
+      getLinkedTitles(item2),
+      titleList,
+      "Item two has correctly ordered linked elements"
+    );
+  }
+);
+
+/**
+ * Test input[type=radio] for single group
+ */
+addAccessibleTask(
+  `
+   
+   `,
+  async (browser, accDoc) => {
+    let cat = getNativeInterface(accDoc, "cat");
+    let dog = getNativeInterface(accDoc, "dog");
+    let catdog = getNativeInterface(accDoc, "catdog");
+    let titleList = ["Cat", "Dog", "CatDog"];
+
+    Assert.deepEqual(
+      titleList,
+      [cat, dog, catdog].map(x => x.getAttributeValue("AXTitle")),
+      "Title list matches"
+    );
+
+    let linkedElems = cat.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 3, "Cat has three linked UI elems");
+    Assert.deepEqual(
+      getLinkedTitles(cat),
+      titleList,
+      "Cat has correctly ordered linked elements"
+    );
+
+    linkedElems = dog.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 3, "Dog has three linked UI elems");
+    Assert.deepEqual(
+      getLinkedTitles(dog),
+      titleList,
+      "Dog has correctly ordered linked elements"
+    );
+
+    linkedElems = catdog.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 3, "Catdog has three linked UI elems");
+    Assert.deepEqual(
+      getLinkedTitles(catdog),
+      titleList,
+      "catdog has correctly ordered linked elements"
+    );
+  }
+);
+
+/**
+ * Test input[type=radio] for different groups
+ */
+addAccessibleTask(
+  `
+   
+   `,
+  async (browser, accDoc) => {
+    let cat = getNativeInterface(accDoc, "cat");
+    let dog = getNativeInterface(accDoc, "dog");
+    let catdog = getNativeInterface(accDoc, "catdog");
+
+    let linkedElems = cat.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 1, "Cat has one linked UI elem");
+    is(
+      linkedElems[0].getAttributeValue("AXTitle"),
+      cat.getAttributeValue("AXTitle"),
+      "Cat is only element"
+    );
+
+    linkedElems = dog.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 1, "Dog has one linked UI elem");
+    is(
+      linkedElems[0].getAttributeValue("AXTitle"),
+      dog.getAttributeValue("AXTitle"),
+      "Dog is only element"
+    );
+
+    linkedElems = catdog.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 0, "Catdog has no linked UI elem");
+  }
+);
+
+/**
+ * Test input[type=radio] for single group across DOM
+ */
+addAccessibleTask(
+  `
+   
      
+    
+      
+    
+   
      
+   
      
+   
+   
      `,
+  async (browser, accDoc) => {
+    let cat = getNativeInterface(accDoc, "cat");
+    let dog = getNativeInterface(accDoc, "dog");
+    let catdog = getNativeInterface(accDoc, "catdog");
+    let titleList = ["Cat", "Dog", "CatDog"];
+
+    Assert.deepEqual(
+      titleList,
+      [cat, dog, catdog].map(x => x.getAttributeValue("AXTitle")),
+      "Title list matches"
+    );
+
+    let linkedElems = cat.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 3, "Cat has three linked UI elems");
+    Assert.deepEqual(
+      getLinkedTitles(cat),
+      titleList,
+      "cat has correctly ordered linked elements"
+    );
+
+    linkedElems = dog.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 3, "Dog has three linked UI elems");
+    Assert.deepEqual(
+      getLinkedTitles(dog),
+      titleList,
+      "dog has correctly ordered linked elements"
+    );
+
+    linkedElems = catdog.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 3, "Catdog has three linked UI elems");
+    Assert.deepEqual(
+      getLinkedTitles(catdog),
+      titleList,
+      "catdog has correctly ordered linked elements"
+    );
+  }
+);
+
+/**
+ * Test dynamic add of input[type=radio] in a single group
+ */
+addAccessibleTask(
+  `
      `,
+  async (browser, accDoc) => {
+    let cat = getNativeInterface(accDoc, "cat");
+    let container = getNativeInterface(accDoc, "container");
+
+    let containerChildren = container.getAttributeValue("AXChildren");
+    is(containerChildren.length, 1, "container has one button");
+    is(
+      containerChildren[0].getAttributeValue("AXRole"),
+      "AXRadioButton",
+      "Container child is radio button"
+    );
+
+    let linkedElems = cat.getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 1, "Cat has 1 linked UI elem");
+    is(
+      linkedElems[0].getAttributeValue("AXTitle"),
+      cat.getAttributeValue("AXTitle"),
+      "Cat is first element"
+    );
+    let reorder = waitForEvent(EVENT_REORDER, "container");
+    await SpecialPowers.spawn(browser, [], () => {
+      let input = content.document.createElement("input");
+      input.setAttribute("type", "radio");
+      input.setAttribute("name", "animal");
+      content.document.getElementById("container").appendChild(input);
+    });
+    await reorder;
+
+    container = getNativeInterface(accDoc, "container");
+    containerChildren = container.getAttributeValue("AXChildren");
+
+    is(containerChildren.length, 2, "container has two children");
+
+    Assert.deepEqual(
+      getChildRoles(container),
+      ["AXRadioButton", "AXRadioButton"],
+      "Both children are radio buttons"
+    );
+
+    linkedElems = containerChildren[0].getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 2, "Cat has 2 linked elements");
+
+    linkedElems = containerChildren[1].getAttributeValue("AXLinkedUIElements");
+    is(linkedElems.length, 2, "New button has 2 linked elements");
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_range.js b/accessible/tests/browser/mac/browser_range.js
new file mode 100644
index 0000000000..430e41d6ea
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_range.js
@@ -0,0 +1,190 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+/**
+ * Verify that the value of a slider input can be incremented/decremented
+ * Test input[type=range]
+ */
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    let range = getNativeInterface(accDoc, "range");
+    is(range.getAttributeValue("AXRole"), "AXSlider", "Correct AXSlider role");
+    is(range.getAttributeValue("AXValue"), 1, "Correct initial value");
+
+    let actions = range.actionNames;
+    ok(actions.includes("AXDecrement"), "Has decrement action");
+    ok(actions.includes("AXIncrement"), "Has increment action");
+
+    let evt = waitForMacEvent("AXValueChanged");
+    range.performAction("AXIncrement");
+    await evt;
+    is(range.getAttributeValue("AXValue"), 11, "Correct increment value");
+
+    evt = waitForMacEvent("AXValueChanged");
+    range.performAction("AXDecrement");
+    await evt;
+    is(range.getAttributeValue("AXValue"), 1, "Correct decrement value");
+
+    evt = waitForMacEvent("AXValueChanged");
+    // Adjust value via script in content
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("range").value = 41;
+    });
+    await evt;
+    is(
+      range.getAttributeValue("AXValue"),
+      41,
+      "Correct value from content change"
+    );
+  }
+);
+
+/**
+ * Verify that the value of a slider input can be set directly
+ * Test input[type=range]
+ */
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    let nextValue = 21;
+    let range = getNativeInterface(accDoc, "range");
+    is(range.getAttributeValue("AXRole"), "AXSlider", "Correct AXSlider role");
+    is(range.getAttributeValue("AXValue"), 1, "Correct initial value");
+
+    ok(range.isAttributeSettable("AXValue"), "Range AXValue is settable.");
+
+    let evt = waitForMacEvent("AXValueChanged");
+    range.setAttributeValue("AXValue", nextValue);
+    await evt;
+    is(range.getAttributeValue("AXValue"), nextValue, "Correct updated value");
+  }
+);
+
+/**
+ * Verify that the value of a number input can be incremented/decremented
+ * Test input[type=number]
+ */
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    let number = getNativeInterface(accDoc, "number");
+    is(
+      number.getAttributeValue("AXRole"),
+      "AXIncrementor",
+      "Correct AXIncrementor role"
+    );
+    is(number.getAttributeValue("AXValue"), 11, "Correct initial value");
+
+    let actions = number.actionNames;
+    ok(actions.includes("AXDecrement"), "Has decrement action");
+    ok(actions.includes("AXIncrement"), "Has increment action");
+
+    let evt = waitForMacEvent("AXValueChanged");
+    number.performAction("AXIncrement");
+    await evt;
+    is(number.getAttributeValue("AXValue"), 11.05, "Correct increment value");
+
+    evt = waitForMacEvent("AXValueChanged");
+    number.performAction("AXDecrement");
+    await evt;
+    is(number.getAttributeValue("AXValue"), 11, "Correct decrement value");
+
+    evt = waitForMacEvent("AXValueChanged");
+    // Adjust value via script in content
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("number").value = 42;
+    });
+    await evt;
+    is(
+      number.getAttributeValue("AXValue"),
+      42,
+      "Correct value from content change"
+    );
+  }
+);
+
+/**
+ * Test Min, Max, Orientation, ValueDescription
+ */
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    let nextValue = 21;
+    let number = getNativeInterface(accDoc, "number");
+    is(
+      number.getAttributeValue("AXRole"),
+      "AXIncrementor",
+      "Correct AXIncrementor role"
+    );
+    is(number.getAttributeValue("AXValue"), 11, "Correct initial value");
+
+    ok(number.isAttributeSettable("AXValue"), "Range AXValue is settable.");
+
+    let evt = waitForMacEvent("AXValueChanged");
+    number.setAttributeValue("AXValue", nextValue);
+    await evt;
+    is(number.getAttributeValue("AXValue"), nextValue, "Correct updated value");
+  }
+);
+
+/**
+ * Verify that the value of a number input can be set directly
+ * Test input[type=number]
+ */
+addAccessibleTask(
+  `
      `,
+  async (browser, accDoc) => {
+    let slider = getNativeInterface(accDoc, "slider");
+    is(
+      slider.getAttributeValue("AXValueDescription"),
+      "High",
+      "Correct value description"
+    );
+    is(
+      slider.getAttributeValue("AXOrientation"),
+      "AXHorizontalOrientation",
+      "Correct orientation"
+    );
+    is(slider.getAttributeValue("AXMinValue"), 0, "Correct min value");
+    is(slider.getAttributeValue("AXMaxValue"), 3, "Correct max value");
+
+    let evt = waitForMacEvent("AXValueChanged");
+    await invokeContentTask(browser, [], () => {
+      const s = content.document.getElementById("slider");
+      s.setAttribute("aria-valuetext", "Low");
+    });
+    await evt;
+    is(
+      slider.getAttributeValue("AXValueDescription"),
+      "Low",
+      "Correct value description"
+    );
+
+    evt = waitForEvent(EVENT_OBJECT_ATTRIBUTE_CHANGED, "slider");
+    await invokeContentTask(browser, [], () => {
+      const s = content.document.getElementById("slider");
+      s.setAttribute("aria-orientation", "vertical");
+      s.setAttribute("aria-valuemin", "-1");
+      s.setAttribute("aria-valuemax", "5");
+    });
+    await evt;
+    is(
+      slider.getAttributeValue("AXOrientation"),
+      "AXVerticalOrientation",
+      "Correct orientation"
+    );
+    is(slider.getAttributeValue("AXMinValue"), -1, "Correct min value");
+    is(slider.getAttributeValue("AXMaxValue"), 5, "Correct max value");
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_required.js b/accessible/tests/browser/mac/browser_required.js
new file mode 100644
index 0000000000..2109d265ab
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_required.js
@@ -0,0 +1,175 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+/**
+ * Test required and aria-required attributes on checkboxes
+ * and radio buttons.
+ */
+addAccessibleTask(
+  `
+  
      
+    
+   
      
+    
+   
      
+    
+   
      
+    
+  
      
+  `,
+  async (browser, accDoc) => {
+    // Check initial AXRequired values are correct
+    let radio = getNativeInterface(accDoc, "radio");
+    is(
+      radio.getAttributeValue("AXRequired"),
+      1,
+      "Correct required val for radio"
+    );
+
+    let ariaRadio = getNativeInterface(accDoc, "ariaRadio");
+    is(
+      ariaRadio.getAttributeValue("AXRequired"),
+      1,
+      "Correct required val for ariaRadio"
+    );
+
+    let checkbox = getNativeInterface(accDoc, "checkbox");
+    is(
+      checkbox.getAttributeValue("AXRequired"),
+      1,
+      "Correct required val for checkbox"
+    );
+
+    let ariaCheckbox = getNativeInterface(accDoc, "ariaCheckbox");
+    is(
+      ariaCheckbox.getAttributeValue("AXRequired"),
+      1,
+      "Correct required val for ariaCheckbox"
+    );
+
+    // Change aria-required, verify AXRequired is updated
+    let stateChanged = waitForEvent(EVENT_STATE_CHANGE, "ariaCheckbox");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("ariaCheckbox")
+        .setAttribute("aria-required", "false");
+    });
+    await stateChanged;
+
+    is(
+      ariaCheckbox.getAttributeValue("AXRequired"),
+      0,
+      "Correct required after false set for ariaCheckbox"
+    );
+
+    // Change aria-required, verify AXRequired is updated
+    stateChanged = waitForEvent(EVENT_STATE_CHANGE, "ariaCheckbox");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("ariaCheckbox")
+        .setAttribute("aria-required", "true");
+    });
+    await stateChanged;
+
+    is(
+      ariaCheckbox.getAttributeValue("AXRequired"),
+      1,
+      "Correct required after true set for ariaCheckbox"
+    );
+
+    // Remove aria-required, verify AXRequired is updated
+    stateChanged = waitForEvent(EVENT_STATE_CHANGE, "ariaCheckbox");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("ariaCheckbox")
+        .removeAttribute("aria-required");
+    });
+    await stateChanged;
+
+    is(
+      ariaCheckbox.getAttributeValue("AXRequired"),
+      0,
+      "Correct required after removal for ariaCheckbox"
+    );
+
+    // Change aria-required, verify AXRequired is updated
+    stateChanged = waitForEvent(EVENT_STATE_CHANGE, "ariaRadio");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("ariaRadio")
+        .setAttribute("aria-required", "false");
+    });
+    await stateChanged;
+
+    is(
+      ariaRadio.getAttributeValue("AXRequired"),
+      0,
+      "Correct required after false set for ariaRadio"
+    );
+
+    // Change aria-required, verify AXRequired is updated
+    stateChanged = waitForEvent(EVENT_STATE_CHANGE, "ariaRadio");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("ariaRadio")
+        .setAttribute("aria-required", "true");
+    });
+    await stateChanged;
+
+    is(
+      ariaRadio.getAttributeValue("AXRequired"),
+      1,
+      "Correct required after true set for ariaRadio"
+    );
+
+    // Remove aria-required, verify AXRequired is updated
+    stateChanged = waitForEvent(EVENT_STATE_CHANGE, "ariaRadio");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("ariaRadio")
+        .removeAttribute("aria-required");
+    });
+    await stateChanged;
+
+    is(
+      ariaRadio.getAttributeValue("AXRequired"),
+      0,
+      "Correct required after removal for ariaRadio"
+    );
+
+    // Remove required, verify AXRequired is updated
+    stateChanged = waitForEvent(EVENT_STATE_CHANGE, "checkbox");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("checkbox").removeAttribute("required");
+    });
+    await stateChanged;
+
+    is(
+      checkbox.getAttributeValue("AXRequired"),
+      0,
+      "Correct required after removal for checkbox"
+    );
+
+    stateChanged = waitForEvent(EVENT_STATE_CHANGE, "radio");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("radio").removeAttribute("required");
+    });
+    await stateChanged;
+
+    is(
+      checkbox.getAttributeValue("AXRequired"),
+      0,
+      "Correct required after removal for radio"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_rich_listbox.js b/accessible/tests/browser/mac/browser_rich_listbox.js
new file mode 100644
index 0000000000..97dd6785bb
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_rich_listbox.js
@@ -0,0 +1,73 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/attributes.js */
+loadScripts({ name: "attributes.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  "mac/doc_rich_listbox.xhtml",
+  async (browser, accDoc) => {
+    const categories = getNativeInterface(accDoc, "categories");
+    const categoriesChildren = categories.getAttributeValue("AXChildren");
+    is(categoriesChildren.length, 4, "Found listbox and 4 items");
+
+    const general = getNativeInterface(accDoc, "general");
+    is(
+      general.getAttributeValue("AXTitle"),
+      "general",
+      "general has appropriate title"
+    );
+    is(
+      categoriesChildren[0].getAttributeValue("AXTitle"),
+      general.getAttributeValue("AXTitle"),
+      "Found general listitem"
+    );
+    is(
+      general.getAttributeValue("AXEnabled"),
+      1,
+      "general is enabled, not dimmed"
+    );
+
+    const home = getNativeInterface(accDoc, "home");
+    is(home.getAttributeValue("AXTitle"), "home", "home has appropriate title");
+    is(
+      categoriesChildren[1].getAttributeValue("AXTitle"),
+      home.getAttributeValue("AXTitle"),
+      "Found home listitem"
+    );
+    is(home.getAttributeValue("AXEnabled"), 1, "Home is enabled, not dimmed");
+
+    const search = getNativeInterface(accDoc, "search");
+    is(
+      search.getAttributeValue("AXTitle"),
+      "search",
+      "search has appropriate title"
+    );
+    is(
+      categoriesChildren[2].getAttributeValue("AXTitle"),
+      search.getAttributeValue("AXTitle"),
+      "Found search listitem"
+    );
+    is(
+      search.getAttributeValue("AXEnabled"),
+      1,
+      "search is enabled, not dimmed"
+    );
+
+    const privacy = getNativeInterface(accDoc, "privacy");
+    is(
+      privacy.getAttributeValue("AXTitle"),
+      "privacy",
+      "privacy has appropriate title"
+    );
+    is(
+      categoriesChildren[3].getAttributeValue("AXTitle"),
+      privacy.getAttributeValue("AXTitle"),
+      "Found privacy listitem"
+    );
+  },
+  { topLevel: false, chrome: true }
+);
diff --git a/accessible/tests/browser/mac/browser_roles_elements.js b/accessible/tests/browser/mac/browser_roles_elements.js
new file mode 100644
index 0000000000..be9b27367e
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_roles_elements.js
@@ -0,0 +1,334 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+/**
+ * Test different HTML elements for their roles and subroles
+ */
+function testRoleAndSubRole(accDoc, id, axRole, axSubRole, axRoleDescription) {
+  let el = getNativeInterface(accDoc, id);
+  if (axRole) {
+    is(
+      el.getAttributeValue("AXRole"),
+      axRole,
+      "AXRole for " + id + " is " + axRole
+    );
+  }
+  if (axSubRole) {
+    is(
+      el.getAttributeValue("AXSubrole"),
+      axSubRole,
+      "Subrole for " + id + " is " + axSubRole
+    );
+  }
+  if (axRoleDescription) {
+    is(
+      el.getAttributeValue("AXRoleDescription"),
+      axRoleDescription,
+      "Subrole for " + id + " is " + axRoleDescription
+    );
+  }
+}
+
+addAccessibleTask(
+  `
+  
+  
      
+  
+  
+  
+  
      
+  
      
+  
+  
+  
+
+  
+  
      
+  
      
+
+  
+  
+  
      
+  
      
+  
      
+  
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
+  
+  
+  
+
+  
+  
      
+  
      
+  
+  
+
+  
+  
+
+  
+  
+
+  
+  
+
+  
+  Deleted text
+  
      term
      definition
      
+  
      
+  Inserted text
+  meter text here
+  sub text here
+  sup text here
+
+  
+  
+    
+      g
+    
+    
+      rect
+    
+    
+      circle
+    
+    
+      ellipse
+    
+    
+      line
+    
+    
+      polygon
+    
+    
+      polyline
+    
+    
+      path
+    
+    
+      image
+    
+  `,
+  (browser, accDoc) => {
+    // WAI-ARIA landmark subroles, regardless of AXRole
+    testRoleAndSubRole(accDoc, "application", null, "AXLandmarkApplication");
+    testRoleAndSubRole(accDoc, "banner", null, "AXLandmarkBanner");
+    testRoleAndSubRole(
+      accDoc,
+      "complementary",
+      null,
+      "AXLandmarkComplementary"
+    );
+    testRoleAndSubRole(accDoc, "contentinfo", null, "AXLandmarkContentInfo");
+    testRoleAndSubRole(accDoc, "form", null, "AXLandmarkForm");
+    testRoleAndSubRole(accDoc, "main", null, "AXLandmarkMain");
+    testRoleAndSubRole(accDoc, "navigation", null, "AXLandmarkNavigation");
+    testRoleAndSubRole(accDoc, "search", null, "AXLandmarkSearch");
+    testRoleAndSubRole(accDoc, "searchbox", null, "AXSearchField");
+
+    // DPub roles map into two categories, sample one of each
+    testRoleAndSubRole(
+      accDoc,
+      "dPubNavigation",
+      "AXGroup",
+      "AXLandmarkNavigation"
+    );
+    testRoleAndSubRole(accDoc, "dPubRegion", "AXGroup", "AXLandmarkRegion");
+
+    // ARIA widget roles
+    testRoleAndSubRole(accDoc, "alert", null, "AXApplicationAlert");
+    testRoleAndSubRole(
+      accDoc,
+      "alertdialog",
+      "AXGroup",
+      "AXApplicationAlertDialog",
+      "alert dialog"
+    );
+    testRoleAndSubRole(accDoc, "article", null, "AXDocumentArticle");
+    testRoleAndSubRole(accDoc, "code", "AXGroup", "AXCodeStyleGroup");
+    testRoleAndSubRole(accDoc, "dialog", null, "AXApplicationDialog", "dialog");
+    testRoleAndSubRole(accDoc, "ariaDocument", null, "AXDocument");
+    testRoleAndSubRole(accDoc, "log", null, "AXApplicationLog");
+    testRoleAndSubRole(accDoc, "marquee", null, "AXApplicationMarquee");
+    testRoleAndSubRole(accDoc, "ariaMath", null, "AXDocumentMath");
+    testRoleAndSubRole(accDoc, "note", null, "AXDocumentNote");
+    testRoleAndSubRole(accDoc, "ariaRegion", null, "AXLandmarkRegion");
+    testRoleAndSubRole(accDoc, "ariaStatus", "AXGroup", "AXApplicationStatus");
+    testRoleAndSubRole(accDoc, "switch", "AXCheckBox", "AXSwitch");
+    testRoleAndSubRole(accDoc, "timer", null, "AXApplicationTimer");
+    testRoleAndSubRole(accDoc, "tooltip", "AXGroup", "AXUserInterfaceTooltip");
+    testRoleAndSubRole(accDoc, "menuitemradio", "AXMenuItem", null);
+    testRoleAndSubRole(accDoc, "menuitemcheckbox", "AXMenuItem", null);
+    testRoleAndSubRole(accDoc, "datetime", "AXGroup", null);
+    // XXX for datetime elements, we spoof the role via the title, since
+    // providing the correct role results in the internal elements being
+    // unreachable by VO
+    is(
+      getNativeInterface(accDoc, "datetime").getAttributeValue("AXTitle"),
+      "date field"
+    );
+
+    // Text boxes
+    testRoleAndSubRole(accDoc, "textbox_multiline", "AXTextArea");
+    testRoleAndSubRole(accDoc, "textbox_singleline", "AXTextField");
+    testRoleAndSubRole(accDoc, "textArea", "AXTextArea");
+    testRoleAndSubRole(accDoc, "textInput", "AXTextField");
+
+    // True HTML5 search field
+    testRoleAndSubRole(accDoc, "htmlSearch", "AXTextField", "AXSearchField");
+
+    // A button morphed into a toggle by ARIA
+    testRoleAndSubRole(accDoc, "toggle", "AXCheckBox", "AXToggle");
+
+    // A banana button
+    testRoleAndSubRole(accDoc, "banana", "AXButton", null, "banana");
+
+    // Other elements
+    testRoleAndSubRole(accDoc, "deletion", "AXGroup", "AXDeleteStyleGroup");
+    testRoleAndSubRole(accDoc, "dl", "AXList", "AXDescriptionList");
+    testRoleAndSubRole(accDoc, "dt", "AXGroup", "AXTerm");
+    testRoleAndSubRole(accDoc, "dd", "AXGroup", "AXDescription");
+    testRoleAndSubRole(accDoc, "hr", "AXSplitter", "AXContentSeparator");
+    testRoleAndSubRole(accDoc, "insertion", "AXGroup", "AXInsertStyleGroup");
+    testRoleAndSubRole(
+      accDoc,
+      "meter",
+      "AXLevelIndicator",
+      null,
+      "level indicator"
+    );
+    testRoleAndSubRole(accDoc, "sub", "AXGroup", "AXSubscriptStyleGroup");
+    testRoleAndSubRole(accDoc, "sup", "AXGroup", "AXSuperscriptStyleGroup");
+
+    // Some SVG stuff
+    testRoleAndSubRole(accDoc, "svg", "AXImage");
+    testRoleAndSubRole(accDoc, "g", "AXGroup");
+    testRoleAndSubRole(accDoc, "rect", "AXImage");
+    testRoleAndSubRole(accDoc, "circle", "AXImage");
+    testRoleAndSubRole(accDoc, "ellipse", "AXImage");
+    testRoleAndSubRole(accDoc, "line", "AXImage");
+    testRoleAndSubRole(accDoc, "polygon", "AXImage");
+    testRoleAndSubRole(accDoc, "polyline", "AXImage");
+    testRoleAndSubRole(accDoc, "path", "AXImage");
+    testRoleAndSubRole(accDoc, "image", "AXImage");
+  }
+);
+
+addAccessibleTask(
+  `
+  
      
+    Logo
+    
      Non-image figure content
      
+    
      Old Mozilla logo
      
+  
      `,
+  (browser, accDoc) => {
+    let figure = getNativeInterface(accDoc, "figure");
+    ok(!figure.getAttributeValue("AXTitle"), "Figure should not have a title");
+    is(
+      figure.getAttributeValue("AXDescription"),
+      "Old Mozilla logo",
+      "Correct figure label"
+    );
+    is(figure.getAttributeValue("AXRole"), "AXGroup", "Correct figure role");
+    is(
+      figure.getAttributeValue("AXRoleDescription"),
+      "figure",
+      "Correct figure role description"
+    );
+
+    let img = getNativeInterface(accDoc, "img");
+    ok(!img.getAttributeValue("AXTitle"), "img should not have a title");
+    is(img.getAttributeValue("AXDescription"), "Logo", "Correct img label");
+    is(img.getAttributeValue("AXRole"), "AXImage", "Correct img role");
+    is(
+      img.getAttributeValue("AXRoleDescription"),
+      "image",
+      "Correct img role description"
+    );
+
+    let figcaption = getNativeInterface(accDoc, "figcaption");
+    ok(
+      !figcaption.getAttributeValue("AXTitle"),
+      "figcaption should not have a title"
+    );
+    ok(
+      !figcaption.getAttributeValue("AXDescription"),
+      "figcaption should not have a label"
+    );
+    is(
+      figcaption.getAttributeValue("AXRole"),
+      "AXGroup",
+      "Correct figcaption role"
+    );
+    is(
+      figcaption.getAttributeValue("AXRoleDescription"),
+      "group",
+      "Correct figcaption role description"
+    );
+  }
+);
+
+addAccessibleTask(``, async (browser, accDoc) => {
+  const webArea = accDoc.nativeInterface.QueryInterface(
+    Ci.nsIAccessibleMacInterface
+  );
+
+  is(
+    webArea.getAttributeValue("AXRole"),
+    "AXWebArea",
+    "web area should be an AXWebArea"
+  );
+  ok(
+    !webArea.attributeNames.includes("AXSubrole"),
+    "AXWebArea should not have a subrole"
+  );
+
+  let roleChanged = waitForMacEvent("AXMozRoleChanged");
+  await SpecialPowers.spawn(browser, [], () => {
+    content.document.body.setAttribute("role", "application");
+  });
+  await roleChanged;
+
+  is(
+    webArea.getAttributeValue("AXRole"),
+    "AXWebArea",
+    "web area should retain AXWebArea role"
+  );
+  ok(
+    !webArea.attributeNames.includes("AXSubrole"),
+    "AXWebArea should not have a subrole"
+  );
+
+  let rootGroup = webArea.getAttributeValue("AXChildren")[0];
+  is(rootGroup.getAttributeValue("AXRole"), "AXGroup");
+  is(rootGroup.getAttributeValue("AXSubrole"), "AXLandmarkApplication");
+});
diff --git a/accessible/tests/browser/mac/browser_rootgroup.js b/accessible/tests/browser/mac/browser_rootgroup.js
new file mode 100644
index 0000000000..a8f4297d64
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_rootgroup.js
@@ -0,0 +1,246 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test document with no single group child
+ */
+addAccessibleTask(
+  `
      hello
      world
      `,
+  async (browser, accDoc) => {
+    let doc = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    let docChildren = doc.getAttributeValue("AXChildren");
+    is(docChildren.length, 1, "The document contains a root group");
+
+    let rootGroup = docChildren[0];
+    is(
+      rootGroup.getAttributeValue("AXIdentifier"),
+      "root-group",
+      "Is generated root group"
+    );
+
+    is(
+      rootGroup.getAttributeValue("AXChildren").length,
+      2,
+      "Root group has two children"
+    );
+
+    // From bottom-up
+    let p1 = getNativeInterface(accDoc, "p1");
+    rootGroup = p1.getAttributeValue("AXParent");
+    is(
+      rootGroup.getAttributeValue("AXIdentifier"),
+      "root-group",
+      "Is generated root group"
+    );
+  }
+);
+
+/**
+ * Test document with a top-level group
+ */
+addAccessibleTask(
+  `
      hello
      world
      `,
+  async (browser, accDoc) => {
+    let doc = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    let docChildren = doc.getAttributeValue("AXChildren");
+    is(docChildren.length, 1, "The document contains a root group");
+
+    let rootGroup = docChildren[0];
+    is(
+      rootGroup.getAttributeValue("AXDOMIdentifier"),
+      "group",
+      "Root group is a document element"
+    );
+
+    // Adding an 'application' role to the body should
+    // create a root group with an application subrole.
+    let evt = waitForMacEvent("AXMozRoleChanged");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.body.setAttribute("role", "application");
+    });
+    await evt;
+
+    is(
+      doc.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "doc still has web area role"
+    );
+    is(
+      doc.getAttributeValue("AXRoleDescription"),
+      "HTML Content",
+      "doc has correct role description"
+    );
+    ok(
+      !doc.attributeNames.includes("AXSubrole"),
+      "sub role not available on web area"
+    );
+
+    rootGroup = doc.getAttributeValue("AXChildren")[0];
+    is(
+      rootGroup.getAttributeValue("AXIdentifier"),
+      "root-group",
+      "Is generated root group"
+    );
+    is(
+      rootGroup.getAttributeValue("AXRole"),
+      "AXGroup",
+      "root group has AXGroup role"
+    );
+    is(
+      rootGroup.getAttributeValue("AXSubrole"),
+      "AXLandmarkApplication",
+      "root group has application subrole"
+    );
+    is(
+      rootGroup.getAttributeValue("AXRoleDescription"),
+      "application",
+      "root group has application role description"
+    );
+  }
+);
+
+/**
+ * Test document with body[role=application] and a top-level group
+ */
+addAccessibleTask(
+  `
      hello
      world
      `,
+  async (browser, accDoc) => {
+    let doc = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+
+    is(
+      doc.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "doc still has web area role"
+    );
+    is(
+      doc.getAttributeValue("AXRoleDescription"),
+      "HTML Content",
+      "doc has correct role description"
+    );
+    ok(
+      !doc.attributeNames.includes("AXSubrole"),
+      "sub role not available on web area"
+    );
+
+    let rootGroup = doc.getAttributeValue("AXChildren")[0];
+    is(
+      rootGroup.getAttributeValue("AXIdentifier"),
+      "root-group",
+      "Is generated root group"
+    );
+    is(
+      rootGroup.getAttributeValue("AXRole"),
+      "AXGroup",
+      "root group has AXGroup role"
+    );
+    is(
+      rootGroup.getAttributeValue("AXSubrole"),
+      "AXLandmarkApplication",
+      "root group has application subrole"
+    );
+    is(
+      rootGroup.getAttributeValue("AXRoleDescription"),
+      "application",
+      "root group has application role description"
+    );
+  },
+  { contentDocBodyAttrs: { role: "application" } }
+);
+
+/**
+ * Test document with a single button
+ */
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    let doc = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    let docChildren = doc.getAttributeValue("AXChildren");
+    is(docChildren.length, 1, "The document contains a root group");
+
+    let rootGroup = docChildren[0];
+    is(
+      rootGroup.getAttributeValue("AXIdentifier"),
+      "root-group",
+      "Is generated root group"
+    );
+
+    let rootGroupChildren = rootGroup.getAttributeValue("AXChildren");
+    is(rootGroupChildren.length, 1, "Root group has one children");
+
+    is(
+      rootGroupChildren[0].getAttributeValue("AXRole"),
+      "AXButton",
+      "Button is child of root group"
+    );
+
+    // From bottom-up
+    let button = getNativeInterface(accDoc, "button");
+    rootGroup = button.getAttributeValue("AXParent");
+    is(
+      rootGroup.getAttributeValue("AXIdentifier"),
+      "root-group",
+      "Is generated root group"
+    );
+  }
+);
+
+/**
+ * Test document with dialog role and heading
+ */
+addAccessibleTask(
+  `
+    
      
+      We're building a richer search experience
+    
      
+  `,
+  async (browser, accDoc) => {
+    let doc = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    let docChildren = doc.getAttributeValue("AXChildren");
+    is(docChildren.length, 1, "The document contains a root group");
+
+    let rootGroup = docChildren[0];
+    is(
+      rootGroup.getAttributeValue("AXIdentifier"),
+      "root-group",
+      "Is generated root group"
+    );
+
+    is(rootGroup.getAttributeValue("AXRole"), "AXGroup", "Inherits role");
+
+    is(
+      rootGroup.getAttributeValue("AXSubrole"),
+      "AXApplicationDialog",
+      "Inherits subrole"
+    );
+    let rootGroupChildren = rootGroup.getAttributeValue("AXChildren");
+    is(rootGroupChildren.length, 1, "Root group has one child");
+
+    is(
+      rootGroupChildren[0].getAttributeValue("AXRole"),
+      "AXHeading",
+      "Heading is child of root group"
+    );
+
+    // From bottom-up
+    let heading = getNativeInterface(accDoc, "h");
+    rootGroup = heading.getAttributeValue("AXParent");
+    is(
+      rootGroup.getAttributeValue("AXIdentifier"),
+      "root-group",
+      "Parent is generated root group"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_rotor.js b/accessible/tests/browser/mac/browser_rotor.js
new file mode 100644
index 0000000000..3f13506757
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_rotor.js
@@ -0,0 +1,1752 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/states.js */
+loadScripts({ name: "states.js", dir: MOCHITESTS_DIR });
+
+ChromeUtils.defineESModuleGetters(this, {
+  PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
+});
+
+/**
+ * Test rotor with heading
+ */
+addAccessibleTask(
+  `
      hello

      world

      goodbye`,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXHeadingSearchKey",
+      AXImmediateDescendantsOnly: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const headingCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(2, headingCount, "Found two headings");
+
+    const headings = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    const hello = getNativeInterface(accDoc, "hello");
+    const world = getNativeInterface(accDoc, "world");
+    is(
+      hello.getAttributeValue("AXTitle"),
+      headings[0].getAttributeValue("AXTitle"),
+      "Found correct first heading"
+    );
+    is(
+      world.getAttributeValue("AXTitle"),
+      headings[1].getAttributeValue("AXTitle"),
+      "Found correct second heading"
+    );
+  }
+);
+
+/**
+ * Test rotor with heading and empty search text
+ */
+addAccessibleTask(
+  `
      hello

      world

      goodbye`,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXHeadingSearchKey",
+      AXImmediateDescendantsOnly: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+      AXSearchText: "",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const headingCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(headingCount, 2, "Found two headings");
+
+    const headings = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    const hello = getNativeInterface(accDoc, "hello");
+    const world = getNativeInterface(accDoc, "world");
+    is(
+      headings[0].getAttributeValue("AXTitle"),
+      hello.getAttributeValue("AXTitle"),
+      "Found correct first heading"
+    );
+    is(
+      headings[1].getAttributeValue("AXTitle"),
+      world.getAttributeValue("AXTitle"),
+      "Found correct second heading"
+    );
+  }
+);
+
+/**
+ * Test rotor with articles
+ */
+addAccessibleTask(
+  `
      
+  
      Google Chrome
      
+  
      Google Chrome is a web browser developed by Google, released in 2008. Chrome is the world's most popular web browser today!
      
+  
      
+
+  
      
+  
      Mozilla Firefox
      
+  
      Mozilla Firefox is an open-source web browser developed by Mozilla. Firefox has been the second most popular web browser since January, 2018.
      
+  
      
+
+  
      
+  
      Microsoft Edge
      
+  
      Microsoft Edge is a web browser developed by Microsoft, released in 2015. Microsoft Edge replaced Internet Explorer.
      
+  
       `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXArticleSearchKey",
+      AXImmediateDescendantsOnly: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const articleCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(3, articleCount, "Found three articles");
+
+    const articles = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    const google = getNativeInterface(accDoc, "google");
+    const moz = getNativeInterface(accDoc, "moz");
+    const microsoft = getNativeInterface(accDoc, "microsoft");
+
+    is(
+      google.getAttributeValue("AXTitle"),
+      articles[0].getAttributeValue("AXTitle"),
+      "Found correct first article"
+    );
+    is(
+      moz.getAttributeValue("AXTitle"),
+      articles[1].getAttributeValue("AXTitle"),
+      "Found correct second article"
+    );
+    is(
+      microsoft.getAttributeValue("AXTitle"),
+      articles[2].getAttributeValue("AXTitle"),
+      "Found correct third article"
+    );
+  }
+);
+
+/**
+ * Test rotor with tables
+ */
+addAccessibleTask(
+  `
+  
+    
+      
+      
+      
+    
+    
+      
+      
+      
+    
+    
+      
+      
+      
+    
+  
      ShapeColorDo I like it?
      TriangleGreenNo
      SquareRedYes
      
+  
      
+  
+    
+      
+      
+    
+    
+      
+      
+    
+    
+      
+      
+    
+    
+      
+      
+    
+    
+      
+      
+    
+    
+      
+      
+    
+  
      Grocery ItemQuantity
      Onions2
      Yogurt1
      Spinach1
      Cherries12
      Carrots5
      
+  
      
+  
      
+    
      
+      
      
+        I am a tiny aria table
+      
      
+    
      
+  
      
+  
      
+  
+    
+      
+      
+      
+      
+      
+    
+    
+      
+      
+      
+      
+      
+    
+  
      ABCDE
      FGHIJ
      
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXTableSearchKey",
+      AXImmediateDescendantsOnly: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const tableCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(4, tableCount, "Found four tables");
+
+    const tables = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    const shapes = getNativeInterface(accDoc, "shapes");
+    const food = getNativeInterface(accDoc, "food");
+    const ariaTable = getNativeInterface(accDoc, "ariaTable");
+    const grid = getNativeInterface(accDoc, "grid");
+
+    is(
+      shapes.getAttributeValue("AXColumnCount"),
+      tables[0].getAttributeValue("AXColumnCount"),
+      "Found correct first table"
+    );
+    is(
+      food.getAttributeValue("AXColumnCount"),
+      tables[1].getAttributeValue("AXColumnCount"),
+      "Found correct second table"
+    );
+    is(
+      ariaTable.getAttributeValue("AXColumnCount"),
+      tables[2].getAttributeValue("AXColumnCount"),
+      "Found correct third table"
+    );
+    is(
+      grid.getAttributeValue("AXColumnCount"),
+      tables[3].getAttributeValue("AXColumnCount"),
+      "Found correct fourth table"
+    );
+  }
+);
+
+/**
+ * Test rotor with landmarks
+ */
+addAccessibleTask(
+  `
+  
+
+  
+
+  
      
+    I am some text in a main element
+  
      
+
+  
      
+    
      Heading in footer
      
+  
      
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXLandmarkSearchKey",
+      AXImmediateDescendantsOnly: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const landmarkCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(4, landmarkCount, "Found four landmarks");
+
+    const landmarks = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    const header = getNativeInterface(accDoc, "header");
+    const nav = getNativeInterface(accDoc, "nav");
+    const main = getNativeInterface(accDoc, "main");
+    const footer = getNativeInterface(accDoc, "footer");
+
+    is(
+      header.getAttributeValue("AXSubrole"),
+      landmarks[0].getAttributeValue("AXSubrole"),
+      "Found correct first landmark"
+    );
+    is(
+      nav.getAttributeValue("AXSubrole"),
+      landmarks[1].getAttributeValue("AXSubrole"),
+      "Found correct second landmark"
+    );
+    is(
+      main.getAttributeValue("AXSubrole"),
+      landmarks[2].getAttributeValue("AXSubrole"),
+      "Found correct third landmark"
+    );
+    is(
+      footer.getAttributeValue("AXSubrole"),
+      landmarks[3].getAttributeValue("AXSubrole"),
+      "Found correct fourth landmark"
+    );
+  }
+);
+
+/**
+ * Test rotor with aria landmarks
+ */
+addAccessibleTask(
+  `
+  
+
+  
+
+  
      
+    I am some text in a main element
+  
      
+
+  
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXLandmarkSearchKey",
+      AXImmediateDescendantsOnly: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const landmarkCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(4, landmarkCount, "Found four landmarks");
+
+    const landmarks = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    const banner = getNativeInterface(accDoc, "banner");
+    const nav = getNativeInterface(accDoc, "nav");
+    const main = getNativeInterface(accDoc, "main");
+    const contentinfo = getNativeInterface(accDoc, "contentinfo");
+
+    is(
+      banner.getAttributeValue("AXSubrole"),
+      landmarks[0].getAttributeValue("AXSubrole"),
+      "Found correct first landmark"
+    );
+    is(
+      nav.getAttributeValue("AXSubrole"),
+      landmarks[1].getAttributeValue("AXSubrole"),
+      "Found correct second landmark"
+    );
+    is(
+      main.getAttributeValue("AXSubrole"),
+      landmarks[2].getAttributeValue("AXSubrole"),
+      "Found correct third landmark"
+    );
+    is(
+      contentinfo.getAttributeValue("AXSubrole"),
+      landmarks[3].getAttributeValue("AXSubrole"),
+      "Found correct fourth landmark"
+    );
+  }
+);
+
+/**
+ * Test rotor with buttons
+ */
+addAccessibleTask(
+  `
+  
      
+
+  
      
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXButtonSearchKey",
+      AXImmediateDescendantsOnly: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const buttonCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(2, buttonCount, "Found two buttons");
+
+    const buttons = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    const button = getNativeInterface(accDoc, "button");
+    const input = getNativeInterface(accDoc, "input");
+
+    is(
+      button.getAttributeValue("AXRole"),
+      buttons[0].getAttributeValue("AXRole"),
+      "Found correct button"
+    );
+    is(
+      input.getAttributeValue("AXRole"),
+      buttons[1].getAttributeValue("AXRole"),
+      "Found correct input button"
+    );
+  }
+);
+
+/**
+ * Test rotor with heading
+ */
+addAccessibleTask(
+  `
      hello

      world

      goodbye`,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXHeadingSearchKey",
+      AXImmediateDescendants: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const headingCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(2, headingCount, "Found two headings");
+
+    const headings = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    const hello = getNativeInterface(accDoc, "hello");
+    const world = getNativeInterface(accDoc, "world");
+    is(
+      hello.getAttributeValue("AXTitle"),
+      headings[0].getAttributeValue("AXTitle"),
+      "Found correct first heading"
+    );
+    is(
+      world.getAttributeValue("AXTitle"),
+      headings[1].getAttributeValue("AXTitle"),
+      "Found correct second heading"
+    );
+  }
+);
+
+/**
+ * Test rotor with buttons
+ */
+addAccessibleTask(
+  `
+  
      
+    
      input[type=button]
      
+    
+
+    
      input[type=submit]
      
+    
+
+    
      input[type=image]
      
+    
+
+    
      input[type=reset]
      
+    
+
+    
      button element
      
+    
+  
      
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXControlSearchKey",
+      AXImmediateDescendants: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const controlsCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(5, controlsCount, "Found 5 controls");
+
+    const controls = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    const button1 = getNativeInterface(accDoc, "button1");
+    const submit = getNativeInterface(accDoc, "submit");
+    const image = getNativeInterface(accDoc, "image");
+    const reset = getNativeInterface(accDoc, "reset");
+    const button2 = getNativeInterface(accDoc, "button2");
+
+    is(
+      button1.getAttributeValue("AXTitle"),
+      controls[0].getAttributeValue("AXTitle"),
+      "Found correct first control"
+    );
+    is(
+      submit.getAttributeValue("AXTitle"),
+      controls[1].getAttributeValue("AXTitle"),
+      "Found correct second control"
+    );
+    is(
+      image.getAttributeValue("AXTitle"),
+      controls[2].getAttributeValue("AXTitle"),
+      "Found correct third control"
+    );
+    is(
+      reset.getAttributeValue("AXTitle"),
+      controls[3].getAttributeValue("AXTitle"),
+      "Found correct third control"
+    );
+    is(
+      button2.getAttributeValue("AXTitle"),
+      controls[4].getAttributeValue("AXTitle"),
+      "Found correct third control"
+    );
+  }
+);
+
+/**
+ * Test rotor with inputs
+ */
+addAccessibleTask(
+  `
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXControlSearchKey",
+      AXImmediateDescendants: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const controlsCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(13, controlsCount, "Found 13 controls");
+    // the extra controls here come from our time control
+    // we can't filter out its internal buttons/incrementors
+    // like we do with the date entry because the time entry
+    // doesn't have its own specific role -- its just a grouping.
+
+    const controls = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const text = getNativeInterface(accDoc, "text");
+    const implText = getNativeInterface(accDoc, "implText");
+    const textarea = getNativeInterface(accDoc, "textarea");
+    const tel = getNativeInterface(accDoc, "tel");
+    const url = getNativeInterface(accDoc, "url");
+    const email = getNativeInterface(accDoc, "email");
+    const password = getNativeInterface(accDoc, "password");
+    const month = getNativeInterface(accDoc, "month");
+    const week = getNativeInterface(accDoc, "week");
+    const number = getNativeInterface(accDoc, "number");
+    const range = getNativeInterface(accDoc, "range");
+
+    const toCheck = [
+      text,
+      implText,
+      textarea,
+      tel,
+      url,
+      email,
+      password,
+      month,
+      week,
+      number,
+      range,
+    ];
+
+    for (let i = 0; i < toCheck.length; i++) {
+      is(
+        toCheck[i].getAttributeValue("AXValue"),
+        controls[i].getAttributeValue("AXValue"),
+        "Found correct input control"
+      );
+    }
+
+    const date = getNativeInterface(accDoc, "date");
+    const time = getNativeInterface(accDoc, "time");
+
+    is(
+      date.getAttributeValue("AXRole"),
+      controls[11].getAttributeValue("AXRole"),
+      "Found corrent date editor"
+    );
+
+    is(
+      time.getAttributeValue("AXRole"),
+      controls[12].getAttributeValue("AXRole"),
+      "Found corrent time editor"
+    );
+  }
+);
+
+/**
+ * Test rotor with groupings
+ */
+addAccessibleTask(
+  `
+  
      
+    Radios
+    
      
+       Radio 1
+       Radio 2
+    
      
+  
      
+
+  
      
+    Checkboxes
+       Checkbox 1
+      Checkbox 2
+  
      
+
+  
      
+    Switches
+      Switch 1
+      Switch 2
+  
      
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXControlSearchKey",
+      AXImmediateDescendants: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const controlsCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(9, controlsCount, "Found 9 controls");
+
+    const controls = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const radios = getNativeInterface(accDoc, "radios");
+    const radio1 = getNativeInterface(accDoc, "radio1");
+    const radio2 = getNativeInterface(accDoc, "radio2");
+
+    is(
+      radios.getAttributeValue("AXRole"),
+      controls[0].getAttributeValue("AXRole"),
+      "Found correct group of radios"
+    );
+    is(
+      radio1.getAttributeValue("AXRole"),
+      controls[1].getAttributeValue("AXRole"),
+      "Found correct radio 1"
+    );
+    is(
+      radio2.getAttributeValue("AXRole"),
+      controls[2].getAttributeValue("AXRole"),
+      "Found correct radio 2"
+    );
+
+    const checkboxes = getNativeInterface(accDoc, "checkboxes");
+    const checkbox1 = getNativeInterface(accDoc, "checkbox1");
+    const checkbox2 = getNativeInterface(accDoc, "checkbox2");
+
+    is(
+      checkboxes.getAttributeValue("AXRole"),
+      controls[3].getAttributeValue("AXRole"),
+      "Found correct group of checkboxes"
+    );
+    is(
+      checkbox1.getAttributeValue("AXRole"),
+      controls[4].getAttributeValue("AXRole"),
+      "Found correct checkbox 1"
+    );
+    is(
+      checkbox2.getAttributeValue("AXRole"),
+      controls[5].getAttributeValue("AXRole"),
+      "Found correct checkbox 2"
+    );
+
+    const switches = getNativeInterface(accDoc, "switches");
+    const switch1 = getNativeInterface(accDoc, "switch1");
+    const switch2 = getNativeInterface(accDoc, "switch2");
+
+    is(
+      switches.getAttributeValue("AXRole"),
+      controls[6].getAttributeValue("AXRole"),
+      "Found correct group of switches"
+    );
+    is(
+      switch1.getAttributeValue("AXRole"),
+      controls[7].getAttributeValue("AXRole"),
+      "Found correct switch 1"
+    );
+    is(
+      switch2.getAttributeValue("AXRole"),
+      controls[8].getAttributeValue("AXRole"),
+      "Found correct switch 2"
+    );
+  }
+);
+
+/**
+ * Test rotor with misc controls
+ */
+addAccessibleTask(
+  `
+  
+
+  
      
+    Hello
+    world
+  
      
+
+  
        
+    
      • item1
        • 
+    
      • item1
        • 
+  
      
+
+  Click Me
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXControlSearchKey",
+      AXImmediateDescendants: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const controlsCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(4, controlsCount, "Found 4 controls");
+
+    const controls = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const spin = getNativeInterface(accDoc, "spinbutton");
+    const details = getNativeInterface(accDoc, "details");
+    const tree = getNativeInterface(accDoc, "tree");
+    const buttonMenu = getNativeInterface(accDoc, "buttonMenu");
+
+    is(
+      spin.getAttributeValue("AXRole"),
+      controls[0].getAttributeValue("AXRole"),
+      "Found correct spinbutton"
+    );
+    is(
+      details.getAttributeValue("AXRole"),
+      controls[1].getAttributeValue("AXRole"),
+      "Found correct details element"
+    );
+    is(
+      tree.getAttributeValue("AXRole"),
+      controls[2].getAttributeValue("AXRole"),
+      "Found correct tree"
+    );
+    is(
+      buttonMenu.getAttributeValue("AXRole"),
+      controls[3].getAttributeValue("AXRole"),
+      "Found correct button menu"
+    );
+  }
+);
+
+/**
+ * Test rotor with links
+ */
+addAccessibleTask(
+  `
+  empty link
+  Example link
+  link without href
+  `,
+  async (browser, accDoc) => {
+    let searchPred = {
+      AXSearchKey: "AXLinkSearchKey",
+      AXImmediateDescendants: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    let linkCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(2, linkCount, "Found two links");
+
+    let links = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    const empty = getNativeInterface(accDoc, "empty");
+    const href = getNativeInterface(accDoc, "href");
+
+    is(
+      empty.getAttributeValue("AXTitle"),
+      links[0].getAttributeValue("AXTitle"),
+      "Found correct first link"
+    );
+    is(
+      href.getAttributeValue("AXTitle"),
+      links[1].getAttributeValue("AXTitle"),
+      "Found correct second link"
+    );
+
+    // unvisited links
+
+    searchPred = {
+      AXSearchKey: "AXUnvisitedLinkSearchKey",
+      AXImmediateDescendants: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    linkCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(2, linkCount, "Found two links");
+
+    links = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(
+      empty.getAttributeValue("AXTitle"),
+      links[0].getAttributeValue("AXTitle"),
+      "Found correct first link"
+    );
+    is(
+      href.getAttributeValue("AXTitle"),
+      links[1].getAttributeValue("AXTitle"),
+      "Found correct second link"
+    );
+
+    // visited links
+
+    let stateChanged = waitForEvent(EVENT_STATE_CHANGE, "href");
+
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    await PlacesTestUtils.addVisits(["http://www.example.com/"]);
+
+    await stateChanged;
+
+    searchPred = {
+      AXSearchKey: "AXVisitedLinkSearchKey",
+      AXImmediateDescendants: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    linkCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(1, linkCount, "Found one link");
+
+    links = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(
+      href.getAttributeValue("AXTitle"),
+      links[0].getAttributeValue("AXTitle"),
+      "Found correct visited link"
+    );
+
+    // Ensure history is cleared before running again
+    await PlacesUtils.history.clear();
+  }
+);
+
+/*
+ * Test AXAnyTypeSearchKey with root group
+ */
+addAccessibleTask(
+  `
      hello

      world

      goodbye`,
+  (browser, accDoc) => {
+    let searchPred = {
+      AXSearchKey: "AXAnyTypeSearchKey",
+      AXImmediateDescendantsOnly: 1,
+      AXResultsLimit: 1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    let results = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(results.length, 1, "One result for root group");
+    is(
+      results[0].getAttributeValue("AXIdentifier"),
+      "root-group",
+      "Is generated root group"
+    );
+
+    searchPred.AXStartElement = results[0];
+    results = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(results.length, 0, "No more results past root group");
+
+    searchPred.AXDirection = "AXDirectionPrevious";
+    results = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(
+      results.length,
+      0,
+      "Searching backwards from root group should yield no results"
+    );
+
+    const rootGroup = webArea.getAttributeValue("AXChildren")[0];
+    is(
+      rootGroup.getAttributeValue("AXIdentifier"),
+      "root-group",
+      "Is generated root group"
+    );
+
+    searchPred = {
+      AXSearchKey: "AXAnyTypeSearchKey",
+      AXImmediateDescendantsOnly: 1,
+      AXResultsLimit: 1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    results = rootGroup.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(
+      results[0].getAttributeValue("AXRole"),
+      "AXHeading",
+      "Is first heading child"
+    );
+  }
+);
+
+/**
+ * Test rotor with checkboxes
+ */
+addAccessibleTask(
+  `
+  
      
+    Checkboxes
+       Checkbox 1
+      Checkbox 2
+      
+      
+  
      
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXCheckBoxSearchKey",
+      AXImmediateDescendantsOnly: 0,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const checkboxCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(4, checkboxCount, "Found 4 checkboxes");
+
+    const checkboxes = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const checkbox1 = getNativeInterface(accDoc, "checkbox1");
+    const checkbox2 = getNativeInterface(accDoc, "checkbox2");
+    const checkbox3 = getNativeInterface(accDoc, "checkbox3");
+    const checkbox4 = getNativeInterface(accDoc, "checkbox4");
+
+    is(
+      checkbox1.getAttributeValue("AXValue"),
+      checkboxes[0].getAttributeValue("AXValue"),
+      "Found correct checkbox 1"
+    );
+    is(
+      checkbox2.getAttributeValue("AXValue"),
+      checkboxes[1].getAttributeValue("AXValue"),
+      "Found correct checkbox 2"
+    );
+    is(
+      checkbox3.getAttributeValue("AXValue"),
+      checkboxes[2].getAttributeValue("AXValue"),
+      "Found correct checkbox 3"
+    );
+    is(
+      checkbox4.getAttributeValue("AXValue"),
+      checkboxes[3].getAttributeValue("AXValue"),
+      "Found correct checkbox 4"
+    );
+  }
+);
+
+/**
+ * Test rotor with radiogroups
+ */
+addAccessibleTask(
+  `
+  
      
+    
      some radio buttons
      
+    
+    
+  
      
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXRadioGroupSearchKey",
+      AXImmediateDescendants: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const radiogroupCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(1, radiogroupCount, "Found 1 radio group");
+
+    const controls = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const radios = getNativeInterface(accDoc, "radios");
+
+    is(
+      radios.getAttributeValue("AXDescription"),
+      controls[0].getAttributeValue("AXDescription"),
+      "Found correct group of radios"
+    );
+  }
+);
+
+/*
+ * Test rotor with inputs
+ */
+addAccessibleTask(
+  `
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  
      
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXTextFieldSearchKey",
+      AXImmediateDescendants: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const textfieldCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(9, textfieldCount, "Found 9 fields");
+
+    const fields = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const text = getNativeInterface(accDoc, "text");
+    const implText = getNativeInterface(accDoc, "implText");
+    const textarea = getNativeInterface(accDoc, "textarea");
+    const tel = getNativeInterface(accDoc, "tel");
+    const url = getNativeInterface(accDoc, "url");
+    const email = getNativeInterface(accDoc, "email");
+    const password = getNativeInterface(accDoc, "password");
+    const month = getNativeInterface(accDoc, "month");
+    const week = getNativeInterface(accDoc, "week");
+
+    const toCheck = [
+      text,
+      implText,
+      textarea,
+      tel,
+      url,
+      email,
+      password,
+      month,
+      week,
+    ];
+
+    for (let i = 0; i < toCheck.length; i++) {
+      is(
+        toCheck[i].getAttributeValue("AXValue"),
+        fields[i].getAttributeValue("AXValue"),
+        "Found correct input control"
+      );
+    }
+  }
+);
+
+/**
+ * Test rotor with static text
+ */
+addAccessibleTask(
+  `
+  
      Hello I am a heading
      
+  This is some regular text.
      this is some paragraph text

      
+  This is a list:
        
+    
      • List item one
        • 
+    
      • List item two
        • 
+  
      
+
+  This is a link
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXStaticTextSearchKey",
+      AXImmediateDescendants: 0,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const textCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(7, textCount, "Found 7 pieces of text");
+
+    const text = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(
+      "Hello I am a heading",
+      text[0].getAttributeValue("AXValue"),
+      "Found correct text node for heading"
+    );
+    is(
+      "This is some regular text.",
+      text[1].getAttributeValue("AXValue"),
+      "Found correct text node"
+    );
+    is(
+      "this is some paragraph text",
+      text[2].getAttributeValue("AXValue"),
+      "Found correct text node for paragraph"
+    );
+    is(
+      "This is a list:",
+      text[3].getAttributeValue("AXValue"),
+      "Found correct text node for pre-list text node"
+    );
+    is(
+      "List item one",
+      text[4].getAttributeValue("AXValue"),
+      "Found correct text node for list item one"
+    );
+    is(
+      "List item two",
+      text[5].getAttributeValue("AXValue"),
+      "Found correct text node for list item two"
+    );
+    is(
+      "This is a link",
+      text[6].getAttributeValue("AXValue"),
+      "Found correct text node for link"
+    );
+  }
+);
+
+/**
+ * Test rotor with lists
+ */
+addAccessibleTask(
+  `
+  
        
+    
      • hello
        • 
+    
      • world
        • 
+  
      
+
+  
        
+    
      1. item one
        2. 
+    
      2. item two
        3. 
+  
      
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXListSearchKey",
+      AXImmediateDescendants: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const listCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(2, listCount, "Found 2 lists");
+
+    const lists = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    const ordered = getNativeInterface(accDoc, "ordered");
+    const unordered = getNativeInterface(accDoc, "unordered");
+
+    is(
+      unordered.getAttributeValue("AXChildren")[0].getAttributeValue("AXTitle"),
+      lists[0].getAttributeValue("AXChildren")[0].getAttributeValue("AXTitle"),
+      "Found correct unordered list"
+    );
+    is(
+      ordered.getAttributeValue("AXChildren")[0].getAttributeValue("AXTitle"),
+      lists[1].getAttributeValue("AXChildren")[0].getAttributeValue("AXTitle"),
+      "Found correct ordered list"
+    );
+  }
+);
+
+/*
+ * Test rotor with images
+ */
+addAccessibleTask(
+  `
+  image one
      
+  
+    image two
+  
+  
+  `,
+  (browser, accDoc) => {
+    let searchPred = {
+      AXSearchKey: "AXImageSearchKey",
+      AXImmediateDescendantsOnly: 0,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    let images = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(images.length, 3, "Found three images");
+
+    const img1 = getNativeInterface(accDoc, "img1");
+    const img2 = getNativeInterface(accDoc, "img2");
+    const img3 = getNativeInterface(accDoc, "img3");
+
+    is(
+      img1.getAttributeValue("AXDescription"),
+      images[0].getAttributeValue("AXDescription"),
+      "Found correct image"
+    );
+
+    is(
+      img2.getAttributeValue("AXDescription"),
+      images[1].getAttributeValue("AXDescription"),
+      "Found correct image"
+    );
+
+    is(
+      img3.getAttributeValue("AXDescription"),
+      images[2].getAttributeValue("AXDescription"),
+      "Found correct image"
+    );
+  }
+);
+
+/**
+ * Test rotor with frames
+ */
+addAccessibleTask(
+  `
+  
+  
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXFrameSearchKey",
+      AXImmediateDescendantsOnly: 0,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const frameCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(3, frameCount, "Found 3 frames");
+  }
+);
+
+/**
+ * Test rotor with static text
+ */
+addAccessibleTask(
+  `
+  
      Hello I am a heading
      
+  This is some regular text.
      this is some paragraph text

      
+  This is a list:
        
+    
      • List item one
        • 
+    
      • List item two
        • 
+  
      
+
+  This is a link
+  `,
+  async (browser, accDoc) => {
+    const searchPred = {
+      AXSearchKey: "AXStaticTextSearchKey",
+      AXImmediateDescendants: 0,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const textCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(7, textCount, "Found 7 pieces of text");
+
+    const text = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    is(
+      "Hello I am a heading",
+      text[0].getAttributeValue("AXValue"),
+      "Found correct text node for heading"
+    );
+    is(
+      "This is some regular text.",
+      text[1].getAttributeValue("AXValue"),
+      "Found correct text node"
+    );
+    is(
+      "this is some paragraph text",
+      text[2].getAttributeValue("AXValue"),
+      "Found correct text node for paragraph"
+    );
+    is(
+      "This is a list:",
+      text[3].getAttributeValue("AXValue"),
+      "Found correct text node for pre-list text node"
+    );
+    is(
+      "List item one",
+      text[4].getAttributeValue("AXValue"),
+      "Found correct text node for list item one"
+    );
+    is(
+      "List item two",
+      text[5].getAttributeValue("AXValue"),
+      "Found correct text node for list item two"
+    );
+    is(
+      "This is a link",
+      text[6].getAttributeValue("AXValue"),
+      "Found correct text node for link"
+    );
+  }
+);
+
+/**
+ * Test search with non-webarea root
+ */
+addAccessibleTask(
+  `
+  
      hello
      world
      
+  
      goodybe
      
+  `,
+  async (browser, accDoc) => {
+    let searchPred = {
+      AXSearchKey: "AXAnyTypeSearchKey",
+      AXImmediateDescendantsOnly: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+    };
+
+    const searchRoot = getNativeInterface(accDoc, "searchroot");
+    const resultCount = searchRoot.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(resultCount, 2, "Found 2 items");
+
+    const p1 = getNativeInterface(accDoc, "p1");
+    searchPred = {
+      AXSearchKey: "AXAnyTypeSearchKey",
+      AXImmediateDescendantsOnly: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+      AXStartElement: p1,
+    };
+
+    let results = searchRoot.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    Assert.deepEqual(
+      results.map(r => r.getAttributeValue("AXDOMIdentifier")),
+      ["p2"],
+      "Result is next group sibling"
+    );
+
+    searchPred = {
+      AXSearchKey: "AXAnyTypeSearchKey",
+      AXImmediateDescendantsOnly: 1,
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionPrevious",
+    };
+
+    results = searchRoot.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    Assert.deepEqual(
+      results.map(r => r.getAttributeValue("AXDOMIdentifier")),
+      ["p2", "p1"],
+      "A reverse search should return groups in reverse"
+    );
+  }
+);
+
+/**
+ * Test search text
+ */
+addAccessibleTask(
+  `
+  
      It's about the future, isn't it?
      
+  
      Okay, alright, Saturday is good, Saturday's good, I could spend a week in 1955.
      
+  
        
+    
      • I could hang out, you could show me around.
        • 
+    
      • There's that word again, heavy.
        • 
+  
      
+  `,
+  async (browser, f, accDoc) => {
+    let searchPred = {
+      AXSearchKey: "AXAnyTypeSearchKey",
+      AXResultsLimit: -1,
+      AXDirection: "AXDirectionNext",
+      AXSearchText: "could",
+    };
+
+    const webArea = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    is(
+      webArea.getAttributeValue("AXRole"),
+      "AXWebArea",
+      "Got web area accessible"
+    );
+
+    const textSearchCount = webArea.getParameterizedAttributeValue(
+      "AXUIElementCountForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+    is(textSearchCount, 2, "Found 2 matching items in text search");
+
+    const results = webArea.getParameterizedAttributeValue(
+      "AXUIElementsForSearchPredicate",
+      NSDictionary(searchPred)
+    );
+
+    info(results.map(r => r.getAttributeValue("AXMozDebugDescription")));
+
+    Assert.deepEqual(
+      results.map(r => r.getAttributeValue("AXValue")),
+      [
+        "Okay, alright, Saturday is good, Saturday's good, I could spend a week in 1955.",
+        "I could hang out, you could show me around.",
+      ],
+      "Correct text search results"
+    );
+  },
+  { topLevel: false, iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/mac/browser_selectables.js b/accessible/tests/browser/mac/browser_selectables.js
new file mode 100644
index 0000000000..331cd7d21c
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_selectables.js
@@ -0,0 +1,342 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+function getSelectedIds(selectable) {
+  return selectable
+    .getAttributeValue("AXSelectedChildren")
+    .map(c => c.getAttributeValue("AXDOMIdentifier"));
+}
+
+/**
+ * Test aria tabs
+ */
+addAccessibleTask("mac/doc_aria_tabs.html", async (browser, accDoc) => {
+  let tablist = getNativeInterface(accDoc, "tablist");
+  is(
+    tablist.getAttributeValue("AXRole"),
+    "AXTabGroup",
+    "Correct role for tablist"
+  );
+
+  let tabMacAccs = tablist.getAttributeValue("AXTabs");
+  is(tabMacAccs.length, 3, "3 items in AXTabs");
+
+  let selectedTabs = tablist.getAttributeValue("AXSelectedChildren");
+  is(selectedTabs.length, 1, "one selected tab");
+
+  let tab = selectedTabs[0];
+  is(tab.getAttributeValue("AXRole"), "AXRadioButton", "Correct role for tab");
+  is(
+    tab.getAttributeValue("AXSubrole"),
+    "AXTabButton",
+    "Correct subrole for tab"
+  );
+  is(tab.getAttributeValue("AXTitle"), "First Tab", "Correct title for tab");
+
+  let tabToSelect = tabMacAccs[1];
+  is(
+    tabToSelect.getAttributeValue("AXTitle"),
+    "Second Tab",
+    "Correct title for tab"
+  );
+
+  let actions = tabToSelect.actionNames;
+  ok(true, actions);
+  ok(actions.includes("AXPress"), "Has switch action");
+
+  let evt = waitForMacEvent("AXSelectedChildrenChanged");
+  tabToSelect.performAction("AXPress");
+  await evt;
+
+  selectedTabs = tablist.getAttributeValue("AXSelectedChildren");
+  is(selectedTabs.length, 1, "one selected tab");
+  is(
+    selectedTabs[0].getAttributeValue("AXTitle"),
+    "Second Tab",
+    "Correct title for tab"
+  );
+});
+
+addAccessibleTask('
      hello
      ', async (browser, accDoc) => {
+  let p = getNativeInterface(accDoc, "p");
+  ok(
+    p.attributeNames.includes("AXSelected"),
+    "html element includes 'AXSelected' attribute"
+  );
+  is(p.getAttributeValue("AXSelected"), 0, "AX selected is 'false'");
+});
+
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    let select = getNativeInterface(accDoc, "select");
+    let one = getNativeInterface(accDoc, "one");
+    let two = getNativeInterface(accDoc, "two");
+    let three = getNativeInterface(accDoc, "three");
+    let four = getNativeInterface(accDoc, "four");
+
+    is(
+      select.getAttributeValue("AXTitle"),
+      "Choose a number",
+      "Select titled correctly"
+    );
+    ok(
+      select.attributeNames.includes("AXOrientation"),
+      "Have orientation attribute"
+    );
+    ok(
+      select.isAttributeSettable("AXSelectedChildren"),
+      "Select can have AXSelectedChildren set"
+    );
+
+    is(one.getAttributeValue("AXTitle"), "", "Option should not have a title");
+    is(
+      one.getAttributeValue("AXValue"),
+      "One",
+      "Option should have correct value"
+    );
+    is(
+      one.getAttributeValue("AXRole"),
+      "AXStaticText",
+      "Options should have AXStaticText role"
+    );
+    ok(one.isAttributeSettable("AXSelected"), "Option can have AXSelected set");
+
+    is(select.getAttributeValue("AXSelectedChildren").length, 1);
+    let evt = waitForMacEvent("AXSelectedChildrenChanged");
+    one.setAttributeValue("AXSelected", false);
+    await evt;
+    is(select.getAttributeValue("AXSelectedChildren").length, 0);
+    evt = waitForMacEvent("AXSelectedChildrenChanged");
+    three.setAttributeValue("AXSelected", true);
+    await evt;
+    is(select.getAttributeValue("AXSelectedChildren").length, 1);
+    ok(getSelectedIds(select).includes("three"), "'three' is selected");
+    evt = waitForMacEvent("AXSelectedChildrenChanged");
+    select.setAttributeValue("AXSelectedChildren", [one, two]);
+    await evt;
+    await untilCacheOk(() => {
+      let ids = getSelectedIds(select);
+      return ids[0] == "one" && ids[1] == "two";
+    }, "Got correct selected children");
+
+    evt = waitForMacEvent("AXSelectedChildrenChanged");
+    select.setAttributeValue("AXSelectedChildren", [three, two, four]);
+    await evt;
+    await untilCacheOk(() => {
+      let ids = getSelectedIds(select);
+      return ids[0] == "two" && ids[1] == "three";
+    }, "Got correct selected children");
+
+    ok(!four.getAttributeValue("AXEnabled"), "Disabled option is disabled");
+  }
+);
+
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    let select = getNativeInterface(accDoc, "select");
+
+    is(
+      select.getAttributeValue("AXTitle"),
+      "Choose a thing",
+      "Select titled correctly"
+    );
+    ok(
+      select.attributeNames.includes("AXOrientation"),
+      "Have orientation attribute"
+    );
+    ok(
+      select.isAttributeSettable("AXSelectedChildren"),
+      "Select can have AXSelectedChildren set"
+    );
+    let childValueSelectablePairs = select
+      .getAttributeValue("AXChildren")
+      .map(c => [
+        c.getAttributeValue("AXValue"),
+        c.isAttributeSettable("AXSelected"),
+        c.getAttributeValue("AXEnabled"),
+      ]);
+    Assert.deepEqual(
+      childValueSelectablePairs,
+      [
+        ["Fruits", false, false],
+        ["Banana", true, true],
+        ["Apple", true, true],
+        ["Orange", true, true],
+        ["Vegetables", false, false],
+        ["Lettuce", true, true],
+        ["Tomato", true, true],
+        ["Onion", true, true],
+        ["Spices", false, false],
+        ["Cumin", true, true],
+        ["Coriander", true, true],
+        ["Allspice", true, true],
+        ["Everything", true, true],
+      ],
+      "Options are selectable, group labels are not"
+    );
+
+    let allspice = getNativeInterface(accDoc, "allspice");
+    is(
+      allspice.getAttributeValue("AXTitle"),
+      "",
+      "Option should not have a title"
+    );
+    is(
+      allspice.getAttributeValue("AXValue"),
+      "Allspice",
+      "Option should have a value"
+    );
+    is(
+      allspice.getAttributeValue("AXRole"),
+      "AXStaticText",
+      "Options should have AXStaticText role"
+    );
+    ok(
+      allspice.isAttributeSettable("AXSelected"),
+      "Option can have AXSelected set"
+    );
+    is(
+      allspice
+        .getAttributeValue("AXParent")
+        .getAttributeValue("AXDOMIdentifier"),
+      "select",
+      "Select is direct parent of nested option"
+    );
+
+    let groupLabel = select.getAttributeValue("AXChildren")[0];
+    ok(
+      !groupLabel.isAttributeSettable("AXSelected"),
+      "Group label should not be selectable"
+    );
+    is(
+      groupLabel.getAttributeValue("AXValue"),
+      "Fruits",
+      "Group label should have a value"
+    );
+    is(
+      groupLabel.getAttributeValue("AXTitle"),
+      null,
+      "Group label should not have a title"
+    );
+    is(
+      groupLabel.getAttributeValue("AXRole"),
+      "AXStaticText",
+      "Group label should have AXStaticText role"
+    );
+    is(
+      groupLabel
+        .getAttributeValue("AXParent")
+        .getAttributeValue("AXDOMIdentifier"),
+      "select",
+      "Select is direct parent of group label"
+    );
+
+    Assert.deepEqual(getSelectedIds(select), ["banana", "lettuce", "allspice"]);
+  }
+);
+
+addAccessibleTask(
+  `
      
+    
      One
      
+    
      Two
      
+    
      Three
      
+    
      Four
      
+
      `,
+  async (browser, accDoc) => {
+    let select = getNativeInterface(accDoc, "select");
+    let one = getNativeInterface(accDoc, "one");
+    let two = getNativeInterface(accDoc, "two");
+    let three = getNativeInterface(accDoc, "three");
+    let four = getNativeInterface(accDoc, "four");
+
+    is(
+      select.getAttributeValue("AXTitle"),
+      "Choose a number",
+      "Select titled correctly"
+    );
+    ok(
+      select.attributeNames.includes("AXOrientation"),
+      "Have orientation attribute"
+    );
+    ok(
+      select.isAttributeSettable("AXSelectedChildren"),
+      "Select can have AXSelectedChildren set"
+    );
+
+    is(one.getAttributeValue("AXTitle"), "", "Option should not have a title");
+    is(
+      one.getAttributeValue("AXValue"),
+      "One",
+      "Option should have correct value"
+    );
+    is(
+      one.getAttributeValue("AXRole"),
+      "AXStaticText",
+      "Options should have AXStaticText role"
+    );
+    ok(one.isAttributeSettable("AXSelected"), "Option can have AXSelected set");
+
+    is(select.getAttributeValue("AXSelectedChildren").length, 1);
+    let evt = waitForMacEvent("AXSelectedChildrenChanged");
+    // Change selection from content.
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("one").removeAttribute("aria-selected");
+    });
+    await evt;
+    is(select.getAttributeValue("AXSelectedChildren").length, 0);
+    evt = waitForMacEvent("AXSelectedChildrenChanged");
+    three.setAttributeValue("AXSelected", true);
+    await evt;
+    is(select.getAttributeValue("AXSelectedChildren").length, 1);
+    ok(getSelectedIds(select).includes("three"), "'three' is selected");
+    evt = waitForMacEvent("AXSelectedChildrenChanged");
+    select.setAttributeValue("AXSelectedChildren", [one, two]);
+    await evt;
+    await untilCacheOk(() => {
+      let ids = getSelectedIds(select);
+      return ids[0] == "one" && ids[1] == "two";
+    }, "Got correct selected children");
+
+    evt = waitForMacEvent("AXSelectedChildrenChanged");
+    select.setAttributeValue("AXSelectedChildren", [three, two, four]);
+    await evt;
+    await untilCacheOk(() => {
+      let ids = getSelectedIds(select);
+      return ids[0] == "two" && ids[1] == "three";
+    }, "Got correct selected children");
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_table.js b/accessible/tests/browser/mac/browser_table.js
new file mode 100644
index 0000000000..50ae697deb
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_table.js
@@ -0,0 +1,629 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+/* import-globals-from ../../mochitest/attributes.js */
+loadScripts({ name: "attributes.js", dir: MOCHITESTS_DIR });
+
+/**
+ * Helper function to test table consistency.
+ */
+function testTableConsistency(table, expectedRowCount, expectedColumnCount) {
+  is(table.getAttributeValue("AXRole"), "AXTable", "Correct role for table");
+
+  let tableChildren = table.getAttributeValue("AXChildren");
+  // XXX: Should be expectedRowCount+ExpectedColumnCount+1 children, rows (incl headers) + cols + headers
+  // if we're trying to match Safari.
+  is(
+    tableChildren.length,
+    expectedRowCount + expectedColumnCount,
+    "Table has children = rows (4) + cols (3)"
+  );
+  for (let i = 0; i < tableChildren.length; i++) {
+    let currChild = tableChildren[i];
+    if (i < expectedRowCount) {
+      is(
+        currChild.getAttributeValue("AXRole"),
+        "AXRow",
+        "Correct role for row"
+      );
+    } else {
+      is(
+        currChild.getAttributeValue("AXRole"),
+        "AXColumn",
+        "Correct role for col"
+      );
+      is(
+        currChild.getAttributeValue("AXRoleDescription"),
+        "column",
+        "Correct role desc for col"
+      );
+    }
+  }
+
+  is(
+    table.getAttributeValue("AXColumnCount"),
+    expectedColumnCount,
+    "Table has correct column count."
+  );
+  is(
+    table.getAttributeValue("AXRowCount"),
+    expectedRowCount,
+    "Table has correct row count."
+  );
+
+  let cols = table.getAttributeValue("AXColumns");
+  is(cols.length, expectedColumnCount, "Table has col list of correct length");
+  for (let i = 0; i < cols.length; i++) {
+    let currCol = cols[i];
+    let currChildren = currCol.getAttributeValue("AXChildren");
+    is(
+      currChildren.length,
+      expectedRowCount,
+      "Column has correct number of cells"
+    );
+    for (let j = 0; j < currChildren.length; j++) {
+      let currChild = currChildren[j];
+      is(
+        currChild.getAttributeValue("AXRole"),
+        "AXCell",
+        "Column child is cell"
+      );
+    }
+  }
+
+  let rows = table.getAttributeValue("AXRows");
+  is(rows.length, expectedRowCount, "Table has row list of correct length");
+  for (let i = 0; i < rows.length; i++) {
+    let currRow = rows[i];
+    let currChildren = currRow.getAttributeValue("AXChildren");
+    is(
+      currChildren.length,
+      expectedColumnCount,
+      "Row has correct number of cells"
+    );
+    for (let j = 0; j < currChildren.length; j++) {
+      let currChild = currChildren[j];
+      is(currChild.getAttributeValue("AXRole"), "AXCell", "Row child is cell");
+    }
+  }
+}
+
+/**
+ * Test table, columns, rows
+ */
+addAccessibleTask(
+  `
+    
+      
+      
+      
+      
+    
+  
      CompanyContactCountry
      Alfreds FutterkisteMaria AndersGermany
      Centro comercial MoctezumaFrancisco ChangMexico
      Ernst HandelRoland MendelAustria
      `,
+  async (browser, accDoc) => {
+    let table = getNativeInterface(accDoc, "customers");
+    testTableConsistency(table, 4, 3);
+
+    const rowText = [
+      "Madrigal Electromotive GmbH",
+      "Lydia Rodarte-Quayle",
+      "Germany",
+    ];
+    let reorder = waitForEvent(EVENT_REORDER, "customers");
+    await SpecialPowers.spawn(browser, [rowText], _rowText => {
+      let tr = content.document.createElement("tr");
+      for (let t of _rowText) {
+        let td = content.document.createElement("td");
+        td.textContent = t;
+        tr.appendChild(td);
+      }
+      content.document.getElementById("customers").appendChild(tr);
+    });
+    await reorder;
+
+    let cols = table.getAttributeValue("AXColumns");
+    is(cols.length, 3, "Table has col list of correct length");
+    for (let i = 0; i < cols.length; i++) {
+      let currCol = cols[i];
+      let currChildren = currCol.getAttributeValue("AXChildren");
+      is(currChildren.length, 5, "Column has correct number of cells");
+      let lastCell = currChildren[currChildren.length - 1];
+      let cellChildren = lastCell.getAttributeValue("AXChildren");
+      is(cellChildren.length, 1, "Cell has a single text child");
+      is(
+        cellChildren[0].getAttributeValue("AXRole"),
+        "AXStaticText",
+        "Correct role for cell child"
+      );
+      is(
+        cellChildren[0].getAttributeValue("AXValue"),
+        rowText[i],
+        "Correct text for cell"
+      );
+    }
+
+    reorder = waitForEvent(EVENT_REORDER, "firstrow");
+    await SpecialPowers.spawn(browser, [], () => {
+      let td = content.document.createElement("td");
+      td.textContent = "Ticker";
+      content.document.getElementById("firstrow").appendChild(td);
+    });
+    await reorder;
+
+    cols = table.getAttributeValue("AXColumns");
+    is(cols.length, 4, "Table has col list of correct length");
+    is(
+      cols[cols.length - 1].getAttributeValue("AXChildren").length,
+      1,
+      "Last column has single child"
+    );
+
+    reorder = waitForEvent(
+      EVENT_REORDER,
+      e => e.accessible.role == ROLE_DOCUMENT
+    );
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("customers").remove();
+    });
+    await reorder;
+
+    try {
+      cols[0].getAttributeValue("AXChildren");
+      ok(false, "Getting children from column of expired table should fail");
+    } catch (e) {
+      ok(true, "Getting children from column of expired table should fail");
+    }
+  }
+);
+
+addAccessibleTask(
+  `
+    
+      
+      
+    
+    
+      
+      
+      
+    
+    
+    
+    
+  
+  
      Header 1Header 2
      onetwothree
      fourfive
      `,
+  (browser, accDoc) => {
+    let table = getNativeInterface(accDoc, "table");
+
+    let getCellAt = (col, row) =>
+      table.getParameterizedAttributeValue("AXCellForColumnAndRow", [col, row]);
+
+    function testCell(cell, expectedId, expectedColRange, expectedRowRange) {
+      is(
+        cell.getAttributeValue("AXDOMIdentifier"),
+        expectedId,
+        "Correct DOM Identifier"
+      );
+      Assert.deepEqual(
+        cell.getAttributeValue("AXColumnIndexRange"),
+        expectedColRange,
+        "Correct column range"
+      );
+      Assert.deepEqual(
+        cell.getAttributeValue("AXRowIndexRange"),
+        expectedRowRange,
+        "Correct row range"
+      );
+    }
+
+    testCell(getCellAt(0, 0), "header1", [0, 2], [0, 1]);
+    testCell(getCellAt(1, 0), "header1", [0, 2], [0, 1]);
+    testCell(getCellAt(2, 0), "header2", [2, 1], [0, 1]);
+
+    testCell(getCellAt(0, 1), "cell1", [0, 1], [1, 1]);
+    testCell(getCellAt(1, 1), "cell2", [1, 1], [1, 2]);
+    testCell(getCellAt(2, 1), "cell3", [2, 1], [1, 1]);
+
+    testCell(getCellAt(0, 2), "cell4", [0, 1], [2, 1]);
+    testCell(getCellAt(1, 2), "cell2", [1, 1], [1, 2]);
+    testCell(getCellAt(2, 2), "cell5", [2, 1], [2, 1]);
+
+    let colHeaders = table.getAttributeValue("AXColumnHeaderUIElements");
+    Assert.deepEqual(
+      colHeaders.map(c => c.getAttributeValue("AXDOMIdentifier")),
+      ["header1", "header1", "header2"],
+      "Correct column headers"
+    );
+  }
+);
+
+addAccessibleTask(
+  `
+    
+      
+    
+  
      Foo
      `,
+  (browser, accDoc) => {
+    // Make sure we guess this table to be a layout table.
+    testAttrs(
+      findAccessibleChildByID(accDoc, "table"),
+      { "layout-guess": "true" },
+      true
+    );
+
+    let table = getNativeInterface(accDoc, "table");
+    is(
+      table.getAttributeValue("AXRole"),
+      "AXGroup",
+      "Correct role (AXGroup) for layout table"
+    );
+
+    let children = table.getAttributeValue("AXChildren");
+    is(
+      children.length,
+      1,
+      "Layout table has single child (no additional columns)"
+    );
+  }
+);
+
+addAccessibleTask(
+  `
      
+    
+      
      
+        
      Cell 1
      
+        
      Cell 2
      
+      
      
+          
+    
+      
      
+        
+          
      Cell 3
      
+          
      Cell 4
      
+              
+      
      
+          
+  
      `,
+  async (browser, accDoc) => {
+    let table = getNativeInterface(accDoc, "table");
+    testTableConsistency(table, 2, 2);
+  }
+);
+
+/*
+ * After executing function 'change' which operates on 'elem', verify the specified
+ * 'event' (if not null) is fired on elem. After the event, check if the given
+ * native accessible 'table' is a layout or data table by role using 'isLayout'.
+ */
+async function testIsLayout(table, elem, event, change, isLayout) {
+  info(
+    "Changing " +
+      elem +
+      ", expecting table change to " +
+      (isLayout ? "AXGroup" : "AXTable")
+  );
+  const toWait = event ? waitForEvent(event, elem) : null;
+  await change();
+  if (toWait) {
+    await toWait;
+  }
+  let intendedRole = isLayout ? "AXGroup" : "AXTable";
+  await untilCacheIs(
+    () => table.getAttributeValue("AXRole"),
+    intendedRole,
+    "Table role correct after change"
+  );
+}
+
+/*
+ * The following attributes should fire an attribute changed
+ * event, which in turn invalidates the layout-table cache
+ * associated with the given table. After adding and removing
+ * each attr, verify the table is a data or layout table,
+ * appropriately. Attrs: summary, abbr, scope, headers
+ */
+addAccessibleTask(
+  `
+    
+      
+      
+    
+    
+      
+      
+    
+  
      cell1cell2
      cell3cell4
      `,
+  async (browser, accDoc) => {
+    let table = getNativeInterface(accDoc, "table");
+    // summary attr should take precedence over role="presentation" to make this
+    // a data table
+    is(table.getAttributeValue("AXRole"), "AXTable", "Table is data table");
+
+    info("Removing summary attr");
+    // after summary is removed, we should have a layout table
+    await testIsLayout(
+      table,
+      "table",
+      EVENT_OBJECT_ATTRIBUTE_CHANGED,
+      async () => {
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.getElementById("table").removeAttribute("summary");
+        });
+      },
+      true
+    );
+
+    info("Setting abbr attr");
+    // after abbr is set we should have a data table again
+    await testIsLayout(
+      table,
+      "cellThree",
+      EVENT_OBJECT_ATTRIBUTE_CHANGED,
+      async () => {
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document
+            .getElementById("cellThree")
+            .setAttribute("abbr", "hello world");
+        });
+      },
+      false
+    );
+
+    info("Removing abbr attr");
+    // after abbr is removed we should have a layout table again
+    await testIsLayout(
+      table,
+      "cellThree",
+      EVENT_OBJECT_ATTRIBUTE_CHANGED,
+      async () => {
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.getElementById("cellThree").removeAttribute("abbr");
+        });
+      },
+      true
+    );
+
+    info("Setting scope attr");
+    // after scope is set we should have a data table again
+    await testIsLayout(
+      table,
+      "cellThree",
+      EVENT_OBJECT_ATTRIBUTE_CHANGED,
+      async () => {
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document
+            .getElementById("cellThree")
+            .setAttribute("scope", "col");
+        });
+      },
+      false
+    );
+
+    info("Removing scope attr");
+    // remove scope should give layout
+    await testIsLayout(
+      table,
+      "cellThree",
+      EVENT_OBJECT_ATTRIBUTE_CHANGED,
+      async () => {
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.getElementById("cellThree").removeAttribute("scope");
+        });
+      },
+      true
+    );
+
+    info("Setting headers attr");
+    // add headers attr should give data
+    await testIsLayout(
+      table,
+      "cellThree",
+      EVENT_OBJECT_ATTRIBUTE_CHANGED,
+      async () => {
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document
+            .getElementById("cellThree")
+            .setAttribute("headers", "cellOne");
+        });
+      },
+      false
+    );
+
+    info("Removing headers attr");
+    // remove headers attr should give layout
+    await testIsLayout(
+      table,
+      "cellThree",
+      EVENT_OBJECT_ATTRIBUTE_CHANGED,
+      async () => {
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document
+            .getElementById("cellThree")
+            .removeAttribute("headers");
+        });
+      },
+      true
+    );
+  }
+);
+
+/*
+ * The following style changes should fire a table style changed
+ * event, which in turn invalidates the layout-table cache
+ * associated with the given table.
+ */
+addAccessibleTask(
+  `
+    
+      
+      
+    
+    
+      
+      
+    
+  
      cell1cell2
      cell3cell4
      `,
+  async (browser, accDoc) => {
+    let table = getNativeInterface(accDoc, "table");
+    // we should start as a layout table
+    is(table.getAttributeValue("AXRole"), "AXGroup", "Table is layout table");
+
+    info("Adding cell border");
+    // after cell border added, we should have a data table
+    await testIsLayout(
+      table,
+      "cellOne",
+      null,
+      async () => {
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document
+            .getElementById("cellOne")
+            .style.setProperty("border", "5px solid green");
+        });
+      },
+      false
+    );
+
+    info("Removing cell border");
+    // after cell border removed, we should have a layout table
+    await testIsLayout(
+      table,
+      "cellOne",
+      null,
+      async () => {
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document
+            .getElementById("cellOne")
+            .style.removeProperty("border");
+        });
+      },
+      true
+    );
+
+    info("Adding row background");
+    // after row background added, we should have a data table
+    await testIsLayout(
+      table,
+      "rowOne",
+      null,
+      async () => {
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document
+            .getElementById("rowOne")
+            .style.setProperty("background-color", "green");
+        });
+      },
+      false
+    );
+
+    info("Removing row background");
+    // after row background removed, we should have a layout table
+    await testIsLayout(
+      table,
+      "rowOne",
+      null,
+      async () => {
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document
+            .getElementById("rowOne")
+            .style.removeProperty("background-color");
+        });
+      },
+      true
+    );
+  }
+);
+
+/*
+ * thead/tbody elements with click handlers should:
+ * (a) render as AXGroup elements
+ * (b) expose their rows as part of their parent table's AXRows array
+ */
+addAccessibleTask(
+  `
+    
+      
+    
+    
+      
+      
+    
+  
      head row
      body row
      another body row
      `,
+  async (browser, accDoc) => {
+    let table = getNativeInterface(accDoc, "table");
+
+    // No click handlers present on thead/tbody
+    let tableChildren = table.getAttributeValue("AXChildren");
+    let tableRows = table.getAttributeValue("AXRows");
+
+    is(tableChildren.length, 4, "Table has four children (3 row + 1 col)");
+    is(tableRows.length, 3, "Table has three rows");
+
+    for (let i = 0; i < tableChildren.length; i++) {
+      const child = tableChildren[i];
+      if (i < 3) {
+        is(
+          child.getAttributeValue("AXRole"),
+          "AXRow",
+          "Table's first 3 children are rows"
+        );
+      } else {
+        is(
+          child.getAttributeValue("AXRole"),
+          "AXColumn",
+          "Table's last child is a column"
+        );
+      }
+    }
+    const reorder = waitForEvent(EVENT_REORDER);
+    await invokeContentTask(browser, [], () => {
+      const head = content.document.getElementById("thead");
+      const body = content.document.getElementById("tbody");
+
+      head.addEventListener("click", function () {});
+      body.addEventListener("click", function () {});
+    });
+    await reorder;
+
+    // Click handlers present
+    tableChildren = table.getAttributeValue("AXChildren");
+
+    is(tableChildren.length, 3, "Table has three children (2 groups + 1 col)");
+    is(
+      tableChildren[0].getAttributeValue("AXRole"),
+      "AXGroup",
+      "Child one is a group"
+    );
+    is(
+      tableChildren[0].getAttributeValue("AXChildren").length,
+      1,
+      "Child one has one child"
+    );
+
+    is(
+      tableChildren[1].getAttributeValue("AXRole"),
+      "AXGroup",
+      "Child two is a group"
+    );
+    is(
+      tableChildren[1].getAttributeValue("AXChildren").length,
+      2,
+      "Child two has two children"
+    );
+
+    is(
+      tableChildren[2].getAttributeValue("AXRole"),
+      "AXColumn",
+      "Child three is a col"
+    );
+
+    tableRows = table.getAttributeValue("AXRows");
+    is(tableRows.length, 3, "Table has three rows");
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_text_basics.js b/accessible/tests/browser/mac/browser_text_basics.js
new file mode 100644
index 0000000000..e4f0bbfa18
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_text_basics.js
@@ -0,0 +1,380 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+function testRangeAtMarker(macDoc, marker, attribute, expected, msg) {
+  let range = macDoc.getParameterizedAttributeValue(attribute, marker);
+  is(stringForRange(macDoc, range), expected, msg);
+}
+
+function testUIElement(
+  macDoc,
+  marker,
+  msg,
+  expectedRole,
+  expectedValue,
+  expectedRange
+) {
+  let elem = macDoc.getParameterizedAttributeValue(
+    "AXUIElementForTextMarker",
+    marker
+  );
+  is(
+    elem.getAttributeValue("AXRole"),
+    expectedRole,
+    `${msg}: element role matches`
+  );
+  is(elem.getAttributeValue("AXValue"), expectedValue, `${msg}: element value`);
+  let elemRange = macDoc.getParameterizedAttributeValue(
+    "AXTextMarkerRangeForUIElement",
+    elem
+  );
+  is(
+    stringForRange(macDoc, elemRange),
+    expectedRange,
+    `${msg}: element range matches element value`
+  );
+}
+
+function testStyleRun(macDoc, marker, msg, expectedStyleRun) {
+  testRangeAtMarker(
+    macDoc,
+    marker,
+    "AXStyleTextMarkerRangeForTextMarker",
+    expectedStyleRun,
+    `${msg}: style run matches`
+  );
+}
+
+function testParagraph(macDoc, marker, msg, expectedParagraph) {
+  testRangeAtMarker(
+    macDoc,
+    marker,
+    "AXParagraphTextMarkerRangeForTextMarker",
+    expectedParagraph,
+    `${msg}: paragraph matches`
+  );
+}
+
+function testWords(macDoc, marker, msg, expectedLeft, expectedRight) {
+  testRangeAtMarker(
+    macDoc,
+    marker,
+    "AXLeftWordTextMarkerRangeForTextMarker",
+    expectedLeft,
+    `${msg}: left word matches`
+  );
+
+  testRangeAtMarker(
+    macDoc,
+    marker,
+    "AXRightWordTextMarkerRangeForTextMarker",
+    expectedRight,
+    `${msg}: right word matches`
+  );
+}
+
+function testLines(
+  macDoc,
+  marker,
+  msg,
+  expectedLine,
+  expectedLeft,
+  expectedRight
+) {
+  testRangeAtMarker(
+    macDoc,
+    marker,
+    "AXLineTextMarkerRangeForTextMarker",
+    expectedLine,
+    `${msg}: line matches`
+  );
+
+  testRangeAtMarker(
+    macDoc,
+    marker,
+    "AXLeftLineTextMarkerRangeForTextMarker",
+    expectedLeft,
+    `${msg}: left line matches`
+  );
+
+  testRangeAtMarker(
+    macDoc,
+    marker,
+    "AXRightLineTextMarkerRangeForTextMarker",
+    expectedRight,
+    `${msg}: right line matches`
+  );
+}
+
+function* markerIterator(macDoc, reverse = false) {
+  let m = macDoc.getAttributeValue(
+    reverse ? "AXEndTextMarker" : "AXStartTextMarker"
+  );
+  let c = 0;
+  while (m) {
+    yield [m, c++];
+    m = macDoc.getParameterizedAttributeValue(
+      reverse
+        ? "AXPreviousTextMarkerForTextMarker"
+        : "AXNextTextMarkerForTextMarker",
+      m
+    );
+  }
+}
+
+// Tests consistency in text markers between:
+// 1. "Linked list" forward navagation
+// 2. Getting markers by index
+// 3. "Linked list" reverse navagation
+// For each iteration method check that the returned index is consistent
+function testMarkerIntegrity(accDoc, expectedMarkerValues) {
+  let macDoc = accDoc.nativeInterface.QueryInterface(
+    Ci.nsIAccessibleMacInterface
+  );
+
+  // Iterate forward with "AXNextTextMarkerForTextMarker"
+  let prevMarker;
+  let count = 0;
+  for (let [marker, index] of markerIterator(macDoc)) {
+    count++;
+    let markerIndex = macDoc.getParameterizedAttributeValue(
+      "AXIndexForTextMarker",
+      marker
+    );
+    is(
+      markerIndex,
+      index,
+      `Correct index in "AXNextTextMarkerForTextMarker": ${index}`
+    );
+    if (prevMarker) {
+      let range = macDoc.getParameterizedAttributeValue(
+        "AXTextMarkerRangeForUnorderedTextMarkers",
+        [prevMarker, marker]
+      );
+      is(
+        macDoc.getParameterizedAttributeValue(
+          "AXLengthForTextMarkerRange",
+          range
+        ),
+        1,
+        `[${index}] marker moved one character`
+      );
+    }
+    prevMarker = marker;
+
+    testWords(
+      macDoc,
+      marker,
+      `At index ${index}`,
+      ...expectedMarkerValues[index].words
+    );
+    testLines(
+      macDoc,
+      marker,
+      `At index ${index}`,
+      ...expectedMarkerValues[index].lines
+    );
+    testUIElement(
+      macDoc,
+      marker,
+      `At index ${index}`,
+      ...expectedMarkerValues[index].element
+    );
+    testParagraph(
+      macDoc,
+      marker,
+      `At index ${index}`,
+      expectedMarkerValues[index].paragraph
+    );
+    testStyleRun(
+      macDoc,
+      marker,
+      `At index ${index}`,
+      expectedMarkerValues[index].style
+    );
+  }
+
+  is(expectedMarkerValues.length, count, `Correct marker count: ${count}`);
+
+  // Use "AXTextMarkerForIndex" to retrieve all text markers
+  for (let i = 0; i < count; i++) {
+    let marker = macDoc.getParameterizedAttributeValue(
+      "AXTextMarkerForIndex",
+      i
+    );
+    let index = macDoc.getParameterizedAttributeValue(
+      "AXIndexForTextMarker",
+      marker
+    );
+    is(index, i, `Correct index in "AXTextMarkerForIndex": ${i}`);
+
+    if (i == count - 1) {
+      ok(
+        !macDoc.getParameterizedAttributeValue(
+          "AXNextTextMarkerForTextMarker",
+          marker
+        ),
+        "Iterated through all markers"
+      );
+    }
+  }
+
+  count = expectedMarkerValues.length;
+
+  // Iterate backward with "AXPreviousTextMarkerForTextMarker"
+  for (let [marker] of markerIterator(macDoc, true)) {
+    if (count <= 0) {
+      ok(false, "Exceeding marker count");
+      break;
+    }
+    count--;
+    let index = macDoc.getParameterizedAttributeValue(
+      "AXIndexForTextMarker",
+      marker
+    );
+    is(
+      index,
+      count,
+      `Correct index in "AXPreviousTextMarkerForTextMarker": ${count}`
+    );
+  }
+
+  is(count, 0, "Iterated backward through all text markers");
+}
+
+addAccessibleTask("mac/doc_textmarker_test.html", async (browser, accDoc) => {
+  const expectedValues = await SpecialPowers.spawn(browser, [], async () => {
+    return content.wrappedJSObject.EXPECTED;
+  });
+
+  testMarkerIntegrity(accDoc, expectedValues);
+});
+
+// Test text marker lesser-than operator
+addAccessibleTask(
+  `
      hello goodbye world
      `,
+  async (browser, accDoc) => {
+    let macDoc = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+
+    let start = macDoc.getParameterizedAttributeValue(
+      "AXTextMarkerForIndex",
+      1
+    );
+    let end = macDoc.getParameterizedAttributeValue("AXTextMarkerForIndex", 10);
+
+    let range = macDoc.getParameterizedAttributeValue(
+      "AXTextMarkerRangeForUnorderedTextMarkers",
+      [end, start]
+    );
+    is(stringForRange(macDoc, range), "ello good");
+  }
+);
+
+addAccessibleTask(
+  `goodbye`,
+  async (browser, accDoc) => {
+    let macDoc = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+
+    let input = getNativeInterface(accDoc, "input");
+
+    let range = macDoc.getParameterizedAttributeValue(
+      "AXTextMarkerRangeForUIElement",
+      input
+    );
+
+    is(stringForRange(macDoc, range), "", "string value is correct");
+  }
+);
+
+addAccessibleTask(
+  `
      
+    
+    
+  
      `,
+  async (browser, accDoc) => {
+    let box = getNativeInterface(accDoc, "box");
+    const children = box.getAttributeValue("AXChildren");
+    is(children.length, 2, "Listbox contains two items");
+    is(children[0].getAttributeValue("AXValue"), "First item");
+    is(children[1].getAttributeValue("AXValue"), "Second item");
+  }
+);
+
+addAccessibleTask(
+  `
      
+    A link should explain clearly what information the reader will get by clicking on that link.
+  
      `,
+  async (browser, accDoc) => {
+    let t = getNativeInterface(accDoc, "t");
+    const children = t.getAttributeValue("AXChildren");
+    const expectedTitles = [
+      "A link ",
+      "should",
+      " explain ",
+      "clearly",
+      " what information the ",
+      "reader",
+      " will get by clicking on that link. ",
+    ];
+    is(children.length, 7, "container has seven children");
+    children.forEach((child, index) => {
+      is(child.getAttributeValue("AXValue"), expectedTitles[index]);
+    });
+  }
+);
+
+addAccessibleTask(
+  `link `,
+  async (browser, accDoc) => {
+    let macDoc = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+
+    let input = getNativeInterface(accDoc, "input");
+    let range = macDoc.getParameterizedAttributeValue(
+      "AXTextMarkerRangeForUIElement",
+      input
+    );
+
+    let firstMarkerInInput = macDoc.getParameterizedAttributeValue(
+      "AXStartTextMarkerForTextMarkerRange",
+      range
+    );
+
+    let leftWordRange = macDoc.getParameterizedAttributeValue(
+      "AXLeftWordTextMarkerRangeForTextMarker",
+      firstMarkerInInput
+    );
+    let str = macDoc.getParameterizedAttributeValue(
+      "AXStringForTextMarkerRange",
+      leftWordRange
+    );
+    is(str, "hello", "Left word at start of input should be right word");
+  }
+);
+
+addAccessibleTask(`
      hello world
      `, async (browser, accDoc) => {
+  let macDoc = accDoc.nativeInterface.QueryInterface(
+    Ci.nsIAccessibleMacInterface
+  );
+
+  let p = getNativeInterface(accDoc, "p");
+  let range = macDoc.getParameterizedAttributeValue(
+    "AXTextMarkerRangeForUIElement",
+    p
+  );
+
+  let bounds = macDoc.getParameterizedAttributeValue(
+    "AXBoundsForTextMarkerRange",
+    range
+  );
+
+  ok(bounds.origin && bounds.size, "Returned valid bounds");
+});
diff --git a/accessible/tests/browser/mac/browser_text_input.js b/accessible/tests/browser/mac/browser_text_input.js
new file mode 100644
index 0000000000..11a9dc25f1
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_text_input.js
@@ -0,0 +1,657 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+function testValueChangedEventData(
+  macIface,
+  data,
+  expectedId,
+  expectedChangeValue,
+  expectedEditType,
+  expectedWordAtLeft
+) {
+  is(
+    data.AXTextChangeElement.getAttributeValue("AXDOMIdentifier"),
+    expectedId,
+    "Correct AXTextChangeElement"
+  );
+  is(
+    data.AXTextStateChangeType,
+    AXTextStateChangeTypeEdit,
+    "Correct AXTextStateChangeType"
+  );
+
+  let changeValues = data.AXTextChangeValues;
+  is(changeValues.length, 1, "One element in AXTextChangeValues");
+  is(
+    changeValues[0].AXTextChangeValue,
+    expectedChangeValue,
+    "Correct AXTextChangeValue"
+  );
+  is(
+    changeValues[0].AXTextEditType,
+    expectedEditType,
+    "Correct AXTextEditType"
+  );
+
+  let textMarker = changeValues[0].AXTextChangeValueStartMarker;
+  ok(textMarker, "There is a AXTextChangeValueStartMarker");
+  let range = macIface.getParameterizedAttributeValue(
+    "AXLeftWordTextMarkerRangeForTextMarker",
+    textMarker
+  );
+  let str = macIface.getParameterizedAttributeValue(
+    "AXStringForTextMarkerRange",
+    range,
+    "correct word before caret"
+  );
+  is(str, expectedWordAtLeft);
+}
+
+// Return true if the first given object a subset of the second
+function isSubset(subset, superset) {
+  if (typeof subset != "object" || typeof superset != "object") {
+    return superset == subset;
+  }
+
+  for (let [prop, val] of Object.entries(subset)) {
+    if (!isSubset(val, superset[prop])) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function matchWebArea(expectedId, expectedInfo) {
+  return (iface, data) => {
+    if (!data) {
+      return false;
+    }
+
+    let textChangeElemID =
+      data.AXTextChangeElement.getAttributeValue("AXDOMIdentifier");
+
+    return (
+      iface.getAttributeValue("AXRole") == "AXWebArea" &&
+      textChangeElemID == expectedId &&
+      isSubset(expectedInfo, data)
+    );
+  };
+}
+
+function matchInput(expectedId, expectedInfo) {
+  return (iface, data) => {
+    if (!data) {
+      return false;
+    }
+
+    return (
+      iface.getAttributeValue("AXDOMIdentifier") == expectedId &&
+      isSubset(expectedInfo, data)
+    );
+  };
+}
+
+async function synthKeyAndTestSelectionChanged(
+  synthKey,
+  synthEvent,
+  expectedId,
+  expectedSelectionString,
+  expectedSelectionInfo
+) {
+  let selectionChangedEvents = Promise.all([
+    waitForMacEventWithInfo(
+      "AXSelectedTextChanged",
+      matchWebArea(expectedId, expectedSelectionInfo)
+    ),
+    waitForMacEventWithInfo(
+      "AXSelectedTextChanged",
+      matchInput(expectedId, expectedSelectionInfo)
+    ),
+  ]);
+
+  EventUtils.synthesizeKey(synthKey, synthEvent);
+  let [webareaEvent, inputEvent] = await selectionChangedEvents;
+  is(
+    inputEvent.data.AXTextChangeElement.getAttributeValue("AXDOMIdentifier"),
+    expectedId,
+    "Correct AXTextChangeElement"
+  );
+
+  let rangeString = inputEvent.macIface.getParameterizedAttributeValue(
+    "AXStringForTextMarkerRange",
+    inputEvent.data.AXSelectedTextMarkerRange
+  );
+  is(
+    rangeString,
+    expectedSelectionString,
+    `selection has correct value (${expectedSelectionString})`
+  );
+
+  is(
+    webareaEvent.macIface.getAttributeValue("AXDOMIdentifier"),
+    "body",
+    "Input event target is top-level WebArea"
+  );
+  rangeString = webareaEvent.macIface.getParameterizedAttributeValue(
+    "AXStringForTextMarkerRange",
+    inputEvent.data.AXSelectedTextMarkerRange
+  );
+  is(
+    rangeString,
+    expectedSelectionString,
+    `selection has correct value (${expectedSelectionString}) via top document`
+  );
+
+  return inputEvent;
+}
+
+function testSelectionEventLeftChar(event, expectedChar) {
+  const selStart = event.macIface.getParameterizedAttributeValue(
+    "AXStartTextMarkerForTextMarkerRange",
+    event.data.AXSelectedTextMarkerRange
+  );
+  const selLeft = event.macIface.getParameterizedAttributeValue(
+    "AXPreviousTextMarkerForTextMarker",
+    selStart
+  );
+  const leftCharRange = event.macIface.getParameterizedAttributeValue(
+    "AXTextMarkerRangeForUnorderedTextMarkers",
+    [selLeft, selStart]
+  );
+  const leftCharString = event.macIface.getParameterizedAttributeValue(
+    "AXStringForTextMarkerRange",
+    leftCharRange
+  );
+  is(leftCharString, expectedChar, "Left character is correct");
+}
+
+function testSelectionEventLine(event, expectedLine) {
+  const selStart = event.macIface.getParameterizedAttributeValue(
+    "AXStartTextMarkerForTextMarkerRange",
+    event.data.AXSelectedTextMarkerRange
+  );
+  const lineRange = event.macIface.getParameterizedAttributeValue(
+    "AXLineTextMarkerRangeForTextMarker",
+    selStart
+  );
+  const lineString = event.macIface.getParameterizedAttributeValue(
+    "AXStringForTextMarkerRange",
+    lineRange
+  );
+  is(lineString, expectedLine, "Line is correct");
+}
+
+async function synthKeyAndTestValueChanged(
+  synthKey,
+  synthEvent,
+  expectedId,
+  expectedTextSelectionId,
+  expectedChangeValue,
+  expectedEditType,
+  expectedWordAtLeft
+) {
+  let valueChangedEvents = Promise.all([
+    waitForMacEvent(
+      "AXSelectedTextChanged",
+      matchWebArea(expectedTextSelectionId, {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+      })
+    ),
+    waitForMacEvent(
+      "AXSelectedTextChanged",
+      matchInput(expectedTextSelectionId, {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+      })
+    ),
+    waitForMacEventWithInfo(
+      "AXValueChanged",
+      matchWebArea(expectedId, {
+        AXTextStateChangeType: AXTextStateChangeTypeEdit,
+        AXTextChangeValues: [
+          {
+            AXTextChangeValue: expectedChangeValue,
+            AXTextEditType: expectedEditType,
+          },
+        ],
+      })
+    ),
+    waitForMacEventWithInfo(
+      "AXValueChanged",
+      matchInput(expectedId, {
+        AXTextStateChangeType: AXTextStateChangeTypeEdit,
+        AXTextChangeValues: [
+          {
+            AXTextChangeValue: expectedChangeValue,
+            AXTextEditType: expectedEditType,
+          },
+        ],
+      })
+    ),
+  ]);
+
+  EventUtils.synthesizeKey(synthKey, synthEvent);
+  let [, , webareaEvent, inputEvent] = await valueChangedEvents;
+
+  testValueChangedEventData(
+    webareaEvent.macIface,
+    webareaEvent.data,
+    expectedId,
+    expectedChangeValue,
+    expectedEditType,
+    expectedWordAtLeft
+  );
+  testValueChangedEventData(
+    inputEvent.macIface,
+    inputEvent.data,
+    expectedId,
+    expectedChangeValue,
+    expectedEditType,
+    expectedWordAtLeft
+  );
+}
+
+async function focusIntoInput(accDoc, inputId, innerContainerId) {
+  let selectionId = innerContainerId ? innerContainerId : inputId;
+  let input = getNativeInterface(accDoc, inputId);
+  ok(!input.getAttributeValue("AXFocused"), "input is not focused");
+  ok(input.isAttributeSettable("AXFocused"), "input is focusable");
+  let events = Promise.all([
+    waitForMacEvent(
+      "AXFocusedUIElementChanged",
+      iface => iface.getAttributeValue("AXDOMIdentifier") == inputId
+    ),
+    waitForMacEventWithInfo(
+      "AXSelectedTextChanged",
+      matchWebArea(selectionId, {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+      })
+    ),
+    waitForMacEventWithInfo(
+      "AXSelectedTextChanged",
+      matchInput(selectionId, {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+      })
+    ),
+  ]);
+  input.setAttributeValue("AXFocused", true);
+  await events;
+}
+
+async function focusIntoInputAndType(accDoc, inputId, innerContainerId) {
+  let selectionId = innerContainerId ? innerContainerId : inputId;
+  await focusIntoInput(accDoc, inputId, innerContainerId);
+
+  async function testTextInput(
+    synthKey,
+    expectedChangeValue,
+    expectedWordAtLeft
+  ) {
+    await synthKeyAndTestValueChanged(
+      synthKey,
+      null,
+      inputId,
+      selectionId,
+      expectedChangeValue,
+      AXTextEditTypeTyping,
+      expectedWordAtLeft
+    );
+  }
+
+  await testTextInput("h", "h", "h");
+  await testTextInput("e", "e", "he");
+  await testTextInput("l", "l", "hel");
+  await testTextInput("l", "l", "hell");
+  await testTextInput("o", "o", "hello");
+  await testTextInput(" ", " ", "hello");
+  // You would expect this to be useless but this is what VO
+  // consumes. I guess it concats the inserted text data to the
+  // word to the left of the marker.
+  await testTextInput("w", "w", " ");
+  await testTextInput("o", "o", "wo");
+  await testTextInput("r", "r", "wor");
+  await testTextInput("l", "l", "worl");
+  await testTextInput("d", "d", "world");
+
+  async function testTextDelete(expectedChangeValue, expectedWordAtLeft) {
+    await synthKeyAndTestValueChanged(
+      "KEY_Backspace",
+      null,
+      inputId,
+      selectionId,
+      expectedChangeValue,
+      AXTextEditTypeDelete,
+      expectedWordAtLeft
+    );
+  }
+
+  await testTextDelete("d", "worl");
+  await testTextDelete("l", "wor");
+
+  await synthKeyAndTestSelectionChanged(
+    "KEY_ArrowLeft",
+    null,
+    selectionId,
+    "",
+    {
+      AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+      AXTextSelectionDirection: AXTextSelectionDirectionPrevious,
+      AXTextSelectionGranularity: AXTextSelectionGranularityCharacter,
+    }
+  );
+  await synthKeyAndTestSelectionChanged(
+    "KEY_ArrowLeft",
+    { shiftKey: true },
+    selectionId,
+    "o",
+    {
+      AXTextStateChangeType: AXTextStateChangeTypeSelectionExtend,
+      AXTextSelectionDirection: AXTextSelectionDirectionPrevious,
+      AXTextSelectionGranularity: AXTextSelectionGranularityCharacter,
+    }
+  );
+  await synthKeyAndTestSelectionChanged(
+    "KEY_ArrowLeft",
+    { shiftKey: true },
+    selectionId,
+    "wo",
+    {
+      AXTextStateChangeType: AXTextStateChangeTypeSelectionExtend,
+      AXTextSelectionDirection: AXTextSelectionDirectionPrevious,
+      AXTextSelectionGranularity: AXTextSelectionGranularityCharacter,
+    }
+  );
+  await synthKeyAndTestSelectionChanged(
+    "KEY_ArrowLeft",
+    null,
+    selectionId,
+    "",
+    { AXTextStateChangeType: AXTextStateChangeTypeSelectionMove }
+  );
+  await synthKeyAndTestSelectionChanged(
+    "KEY_ArrowLeft",
+    { shiftKey: true, metaKey: true },
+    selectionId,
+    "hello ",
+    {
+      AXTextStateChangeType: AXTextStateChangeTypeSelectionExtend,
+      AXTextSelectionDirection: AXTextSelectionDirectionBeginning,
+      AXTextSelectionGranularity: AXTextSelectionGranularityLine,
+    }
+  );
+  await synthKeyAndTestSelectionChanged(
+    "KEY_ArrowLeft",
+    null,
+    selectionId,
+    "",
+    { AXTextStateChangeType: AXTextStateChangeTypeSelectionMove }
+  );
+  await synthKeyAndTestSelectionChanged(
+    "KEY_ArrowRight",
+    { shiftKey: true, altKey: true },
+    selectionId,
+    "hello",
+    {
+      AXTextStateChangeType: AXTextStateChangeTypeSelectionExtend,
+      AXTextSelectionDirection: AXTextSelectionDirectionNext,
+      AXTextSelectionGranularity: AXTextSelectionGranularityWord,
+    }
+  );
+}
+
+// Test text input
+addAccessibleTask(
+  `link `,
+  async (browser, accDoc) => {
+    await focusIntoInputAndType(accDoc, "input");
+  },
+  { topLevel: true, iframe: true, remoteIframe: true }
+);
+
+// Test content editable
+addAccessibleTask(
+  `

      `,
+  async (browser, accDoc) => {
+    const inner = getNativeInterface(accDoc, "inner");
+    const editableAncestor = inner.getAttributeValue("AXEditableAncestor");
+    is(
+      editableAncestor.getAttributeValue("AXDOMIdentifier"),
+      "input",
+      "Editable ancestor is input"
+    );
+    await focusIntoInputAndType(accDoc, "input");
+  }
+);
+
+// Test input that gets role::EDITCOMBOBOX
+addAccessibleTask(``, async (browser, accDoc) => {
+  const box = getNativeInterface(accDoc, "box");
+  const editableAncestor = box.getAttributeValue("AXEditableAncestor");
+  is(
+    editableAncestor.getAttributeValue("AXDOMIdentifier"),
+    "box",
+    "Editable ancestor is box itself"
+  );
+  await focusIntoInputAndType(accDoc, "box");
+});
+
+// Test multiline caret control in a text area
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    await focusIntoInput(accDoc, "input");
+
+    await synthKeyAndTestSelectionChanged("KEY_ArrowRight", null, "input", "", {
+      AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+      AXTextSelectionDirection: AXTextSelectionDirectionNext,
+      AXTextSelectionGranularity: AXTextSelectionGranularityCharacter,
+    });
+
+    await synthKeyAndTestSelectionChanged("KEY_ArrowDown", null, "input", "", {
+      AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+      AXTextSelectionDirection: AXTextSelectionDirectionNext,
+      AXTextSelectionGranularity: AXTextSelectionGranularityLine,
+    });
+
+    await synthKeyAndTestSelectionChanged(
+      "KEY_ArrowLeft",
+      { metaKey: true },
+      "input",
+      "",
+      {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+        AXTextSelectionDirection: AXTextSelectionDirectionBeginning,
+        AXTextSelectionGranularity: AXTextSelectionGranularityLine,
+      }
+    );
+
+    await synthKeyAndTestSelectionChanged(
+      "KEY_ArrowRight",
+      { metaKey: true },
+      "input",
+      "",
+      {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+        AXTextSelectionDirection: AXTextSelectionDirectionEnd,
+        AXTextSelectionGranularity: AXTextSelectionGranularityLine,
+      }
+    );
+  },
+  { topLevel: true, iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test that the caret returns the correct marker when it is positioned after
+ * the last character (to facilitate appending text).
+ */
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    await focusIntoInput(docAcc, "input");
+
+    let event = await synthKeyAndTestSelectionChanged(
+      "KEY_ArrowRight",
+      null,
+      "input",
+      "",
+      {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+        AXTextSelectionDirection: AXTextSelectionDirectionNext,
+        AXTextSelectionGranularity: AXTextSelectionGranularityCharacter,
+      }
+    );
+    testSelectionEventLeftChar(event, "a");
+    event = await synthKeyAndTestSelectionChanged(
+      "KEY_ArrowRight",
+      null,
+      "input",
+      "",
+      {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+        AXTextSelectionDirection: AXTextSelectionDirectionNext,
+        AXTextSelectionGranularity: AXTextSelectionGranularityCharacter,
+      }
+    );
+    testSelectionEventLeftChar(event, "b");
+    event = await synthKeyAndTestSelectionChanged(
+      "KEY_ArrowRight",
+      null,
+      "input",
+      "",
+      {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+        AXTextSelectionDirection: AXTextSelectionDirectionNext,
+        AXTextSelectionGranularity: AXTextSelectionGranularityCharacter,
+      }
+    );
+    testSelectionEventLeftChar(event, "c");
+  },
+  { chrome: true, topLevel: true }
+);
+
+/**
+ * Test that the caret returns the correct line when the caret is at the start
+ * of the line.
+ */
+addAccessibleTask(
+  `
+
+
      a b c
      
+  `,
+  async function (browser, docAcc) {
+    let hard = getNativeInterface(docAcc, "hard");
+    await focusIntoInput(docAcc, "hard");
+    is(hard.getAttributeValue("AXInsertionPointLineNumber"), 0);
+    let event = await synthKeyAndTestSelectionChanged(
+      "KEY_ArrowDown",
+      null,
+      "hard",
+      "",
+      {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+        AXTextSelectionDirection: AXTextSelectionDirectionNext,
+        AXTextSelectionGranularity: AXTextSelectionGranularityLine,
+      }
+    );
+    testSelectionEventLine(event, "cd");
+    is(hard.getAttributeValue("AXInsertionPointLineNumber"), 1);
+    event = await synthKeyAndTestSelectionChanged(
+      "KEY_ArrowDown",
+      null,
+      "hard",
+      "",
+      {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+        AXTextSelectionDirection: AXTextSelectionDirectionNext,
+        AXTextSelectionGranularity: AXTextSelectionGranularityLine,
+      }
+    );
+    testSelectionEventLine(event, "ef");
+    is(hard.getAttributeValue("AXInsertionPointLineNumber"), 2);
+    event = await synthKeyAndTestSelectionChanged(
+      "KEY_ArrowDown",
+      null,
+      "hard",
+      "",
+      {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+        AXTextSelectionDirection: AXTextSelectionDirectionNext,
+        AXTextSelectionGranularity: AXTextSelectionGranularityLine,
+      }
+    );
+    testSelectionEventLine(event, "");
+    is(hard.getAttributeValue("AXInsertionPointLineNumber"), 3);
+    event = await synthKeyAndTestSelectionChanged(
+      "KEY_ArrowDown",
+      null,
+      "hard",
+      "",
+      {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+        AXTextSelectionDirection: AXTextSelectionDirectionNext,
+        AXTextSelectionGranularity: AXTextSelectionGranularityLine,
+      }
+    );
+    testSelectionEventLine(event, "gh");
+    is(hard.getAttributeValue("AXInsertionPointLineNumber"), 4);
+    event = await synthKeyAndTestSelectionChanged(
+      "KEY_ArrowDown",
+      null,
+      "hard",
+      "",
+      {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+        AXTextSelectionDirection: AXTextSelectionDirectionNext,
+        AXTextSelectionGranularity: AXTextSelectionGranularityLine,
+      }
+    );
+    testSelectionEventLine(event, "");
+    is(hard.getAttributeValue("AXInsertionPointLineNumber"), 5);
+
+    let wrapped = getNativeInterface(docAcc, "wrapped");
+    await focusIntoInput(docAcc, "wrapped");
+    is(wrapped.getAttributeValue("AXInsertionPointLineNumber"), 0);
+    event = await synthKeyAndTestSelectionChanged(
+      "KEY_ArrowDown",
+      null,
+      "wrapped",
+      "",
+      {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+        AXTextSelectionDirection: AXTextSelectionDirectionNext,
+        AXTextSelectionGranularity: AXTextSelectionGranularityLine,
+      }
+    );
+    testSelectionEventLine(event, "b ");
+    is(wrapped.getAttributeValue("AXInsertionPointLineNumber"), 1);
+    event = await synthKeyAndTestSelectionChanged(
+      "KEY_ArrowDown",
+      null,
+      "wrapped",
+      "",
+      {
+        AXTextStateChangeType: AXTextStateChangeTypeSelectionMove,
+        AXTextSelectionDirection: AXTextSelectionDirectionNext,
+        AXTextSelectionGranularity: AXTextSelectionGranularityLine,
+      }
+    );
+    testSelectionEventLine(event, "c");
+    is(wrapped.getAttributeValue("AXInsertionPointLineNumber"), 2);
+  },
+  { chrome: true, topLevel: true }
+);
diff --git a/accessible/tests/browser/mac/browser_text_leaf.js b/accessible/tests/browser/mac/browser_text_leaf.js
new file mode 100644
index 0000000000..21deed6212
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_text_leaf.js
@@ -0,0 +1,83 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+/**
+ * Test accessibles aren't created for linebreaks.
+ */
+addAccessibleTask(
+  `hello
      world`,
+  async (browser, accDoc) => {
+    let doc = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+    let docChildren = doc.getAttributeValue("AXChildren");
+    is(docChildren.length, 1, "The document contains a root group");
+
+    let rootGroup = docChildren[0];
+    let children = rootGroup.getAttributeValue("AXChildren");
+    is(docChildren.length, 1, "The root group contains 2 children");
+
+    // verify first child is correct
+    is(
+      children[0].getAttributeValue("AXRole"),
+      "AXStaticText",
+      "First child is a text node"
+    );
+    is(
+      children[0].getAttributeValue("AXValue"),
+      "hello",
+      "First child is hello text"
+    );
+
+    // verify second child is correct
+    is(
+      children[1].getAttributeValue("AXRole"),
+      "AXStaticText",
+      "Second child is a text node"
+    );
+
+    is(
+      children[1].getAttributeValue("AXValue"),
+      gIsIframe && !gIsRemoteIframe ? "world" : "world ",
+      "Second child is world text"
+    );
+    // we have a trailing space in here due to bug 1577028
+    // but this appears fixed in non-remote iframes
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+addAccessibleTask(
+  `
      hello, this is a test
      `,
+  async (browser, accDoc) => {
+    let p = getNativeInterface(accDoc, "p");
+    let textLeaf = p.getAttributeValue("AXChildren")[0];
+    ok(textLeaf, "paragraph has a text leaf");
+
+    let str = textLeaf.getParameterizedAttributeValue(
+      "AXStringForRange",
+      NSRange(3, 6)
+    );
+
+    is(str, "lo, th", "AXStringForRange matches.");
+
+    let smallBounds = textLeaf.getParameterizedAttributeValue(
+      "AXBoundsForRange",
+      NSRange(3, 6)
+    );
+
+    let largeBounds = textLeaf.getParameterizedAttributeValue(
+      "AXBoundsForRange",
+      NSRange(3, 8)
+    );
+
+    ok(smallBounds.size[0] < largeBounds.size[0], "longer range is wider");
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/mac/browser_text_selection.js b/accessible/tests/browser/mac/browser_text_selection.js
new file mode 100644
index 0000000000..a914adba8e
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_text_selection.js
@@ -0,0 +1,187 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test simple text selection
+ */
+addAccessibleTask(`
      Hello World
      `, async (browser, accDoc) => {
+  let macDoc = accDoc.nativeInterface.QueryInterface(
+    Ci.nsIAccessibleMacInterface
+  );
+
+  let startMarker = macDoc.getAttributeValue("AXStartTextMarker");
+  let endMarker = macDoc.getAttributeValue("AXEndTextMarker");
+  let range = macDoc.getParameterizedAttributeValue(
+    "AXTextMarkerRangeForUnorderedTextMarkers",
+    [startMarker, endMarker]
+  );
+  is(stringForRange(macDoc, range), "Hello World");
+
+  let evt = waitForMacEventWithInfo("AXSelectedTextChanged", (elem, info) => {
+    return (
+      !info.AXTextStateSync &&
+      info.AXTextStateChangeType == AXTextStateChangeTypeSelectionExtend &&
+      elem.getAttributeValue("AXRole") == "AXWebArea"
+    );
+  });
+  await SpecialPowers.spawn(browser, [], () => {
+    let p = content.document.getElementById("p");
+    let r = new content.Range();
+    r.setStart(p.firstChild, 1);
+    r.setEnd(p.firstChild, 8);
+
+    let s = content.getSelection();
+    s.addRange(r);
+  });
+  await evt;
+
+  range = macDoc.getAttributeValue("AXSelectedTextMarkerRange");
+  is(stringForRange(macDoc, range), "ello Wo");
+
+  let firstWordRange = macDoc.getParameterizedAttributeValue(
+    "AXRightWordTextMarkerRangeForTextMarker",
+    startMarker
+  );
+  is(stringForRange(macDoc, firstWordRange), "Hello");
+
+  evt = waitForMacEventWithInfo("AXSelectedTextChanged", (elem, info) => {
+    return (
+      !info.AXTextStateSync &&
+      info.AXTextStateChangeType == AXTextStateChangeTypeSelectionExtend &&
+      elem.getAttributeValue("AXRole") == "AXWebArea"
+    );
+  });
+  macDoc.setAttributeValue("AXSelectedTextMarkerRange", firstWordRange);
+  await evt;
+  range = macDoc.getAttributeValue("AXSelectedTextMarkerRange");
+  is(stringForRange(macDoc, range), "Hello");
+
+  // Collapse selection
+  evt = waitForMacEventWithInfo("AXSelectedTextChanged", (elem, info) => {
+    return (
+      info.AXTextStateSync &&
+      info.AXTextStateChangeType == AXTextStateChangeTypeSelectionMove &&
+      elem.getAttributeValue("AXRole") == "AXWebArea"
+    );
+  });
+  await SpecialPowers.spawn(browser, [], () => {
+    let s = content.getSelection();
+    s.collapseToEnd();
+  });
+  await evt;
+});
+
+/**
+ * Test text selection events caused by focus change
+ */
+addAccessibleTask(
+  `
      
+  Hello World,
+  I love
+  
      `,
+  async (browser, accDoc) => {
+    // Set up an AXSelectedTextChanged listener here. It will get resolved
+    // on the first non-root event it encounters, so if we test its data at the end
+    // of this test it will show us the first text-selectable object that was focused,
+    // which is "link".
+    let selTextChanged = waitForMacEvent(
+      "AXSelectedTextChanged",
+      e => e.getAttributeValue("AXDOMIdentifier") != "body"
+    );
+
+    let focusChanged = waitForMacEvent("AXFocusedUIElementChanged");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("unselectable_link").focus();
+    });
+    let focusChangedTarget = await focusChanged;
+    is(
+      focusChangedTarget.getAttributeValue("AXDOMIdentifier"),
+      "unselectable_link",
+      "Correct event target"
+    );
+
+    focusChanged = waitForMacEvent("AXFocusedUIElementChanged");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("button").focus();
+    });
+    focusChangedTarget = await focusChanged;
+    is(
+      focusChangedTarget.getAttributeValue("AXDOMIdentifier"),
+      "button",
+      "Correct event target"
+    );
+
+    focusChanged = waitForMacEvent("AXFocusedUIElementChanged");
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("link").focus();
+    });
+    focusChangedTarget = await focusChanged;
+    is(
+      focusChangedTarget.getAttributeValue("AXDOMIdentifier"),
+      "link",
+      "Correct event target"
+    );
+
+    let selTextChangedTarget = await selTextChanged;
+    is(
+      selTextChangedTarget.getAttributeValue("AXDOMIdentifier"),
+      "link",
+      "Correct event target"
+    );
+  }
+);
+
+/**
+ * Test text selection with focus change
+ */
+addAccessibleTask(
+  `
      Hello 
      `,
+  async (browser, accDoc) => {
+    let macDoc = accDoc.nativeInterface.QueryInterface(
+      Ci.nsIAccessibleMacInterface
+    );
+
+    let evt = waitForMacEventWithInfo("AXSelectedTextChanged", (elem, info) => {
+      return (
+        !info.AXTextStateSync &&
+        info.AXTextStateChangeType == AXTextStateChangeTypeSelectionExtend &&
+        elem.getAttributeValue("AXRole") == "AXWebArea"
+      );
+    });
+    await SpecialPowers.spawn(browser, [], () => {
+      let p = content.document.getElementById("p");
+      let r = new content.Range();
+      r.setStart(p.firstChild, 1);
+      r.setEnd(p.firstChild, 3);
+
+      let s = content.getSelection();
+      s.addRange(r);
+    });
+    await evt;
+
+    let range = macDoc.getAttributeValue("AXSelectedTextMarkerRange");
+    is(stringForRange(macDoc, range), "el");
+
+    let events = Promise.all([
+      waitForMacEvent("AXFocusedUIElementChanged"),
+      waitForMacEventWithInfo("AXSelectedTextChanged"),
+    ]);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("input").focus();
+    });
+    let [, { data }] = await events;
+    ok(
+      data.AXTextSelectionChangedFocus,
+      "have AXTextSelectionChangedFocus in event info"
+    );
+    ok(!data.AXTextStateSync, "no AXTextStateSync in editables");
+    is(
+      data.AXTextSelectionDirection,
+      AXTextSelectionDirectionDiscontiguous,
+      "discontigous direction"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_toggle_radio_check.js b/accessible/tests/browser/mac/browser_toggle_radio_check.js
new file mode 100644
index 0000000000..1695d73b0d
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_toggle_radio_check.js
@@ -0,0 +1,304 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+/**
+ * Test input[type=checkbox]
+ */
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    let checkbox = getNativeInterface(accDoc, "vehicle");
+    await untilCacheIs(
+      () => checkbox.getAttributeValue("AXValue"),
+      0,
+      "Correct initial value"
+    );
+
+    let actions = checkbox.actionNames;
+    ok(actions.includes("AXPress"), "Has press action");
+
+    let evt = waitForMacEvent("AXValueChanged", "vehicle");
+    checkbox.performAction("AXPress");
+    await evt;
+    await untilCacheIs(
+      () => checkbox.getAttributeValue("AXValue"),
+      1,
+      "Correct checked value"
+    );
+
+    evt = waitForMacEvent("AXValueChanged", "vehicle");
+    checkbox.performAction("AXPress");
+    await evt;
+    await untilCacheIs(
+      () => checkbox.getAttributeValue("AXValue"),
+      0,
+      "Correct checked value"
+    );
+  }
+);
+
+/**
+ * Test aria-pressed toggle buttons
+ */
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    // Set up a callback to change the toggle value
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("toggle").onclick = e => {
+        let curVal = e.target.getAttribute("aria-pressed");
+        let nextVal = curVal == "false" ? "true" : "false";
+        e.target.setAttribute("aria-pressed", nextVal);
+      };
+    });
+
+    let toggle = getNativeInterface(accDoc, "toggle");
+    await untilCacheIs(
+      () => toggle.getAttributeValue("AXValue"),
+      0,
+      "Correct initial value"
+    );
+
+    let actions = toggle.actionNames;
+    ok(actions.includes("AXPress"), "Has press action");
+
+    let evt = waitForMacEvent("AXValueChanged", "toggle");
+    toggle.performAction("AXPress");
+    await evt;
+    await untilCacheIs(
+      () => toggle.getAttributeValue("AXValue"),
+      1,
+      "Correct checked value"
+    );
+
+    evt = waitForMacEvent("AXValueChanged", "toggle");
+    toggle.performAction("AXPress");
+    await evt;
+    await untilCacheIs(
+      () => toggle.getAttributeValue("AXValue"),
+      0,
+      "Correct checked value"
+    );
+  }
+);
+
+/**
+ * Test aria-checked with tri state
+ */
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    // Set up a callback to change the toggle value
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.getElementById("checkbox").onclick = e => {
+        const states = ["false", "true", "mixed"];
+        let currState = e.target.getAttribute("aria-checked");
+        let nextState = states[(states.indexOf(currState) + 1) % states.length];
+        e.target.setAttribute("aria-checked", nextState);
+      };
+    });
+    let checkbox = getNativeInterface(accDoc, "checkbox");
+    await untilCacheIs(
+      () => checkbox.getAttributeValue("AXValue"),
+      0,
+      "Correct initial value"
+    );
+
+    let actions = checkbox.actionNames;
+    ok(actions.includes("AXPress"), "Has press action");
+
+    let evt = waitForMacEvent("AXValueChanged", "checkbox");
+    checkbox.performAction("AXPress");
+    await evt;
+    await untilCacheIs(
+      () => checkbox.getAttributeValue("AXValue"),
+      1,
+      "Correct checked value"
+    );
+
+    // Changing from checked to mixed fires two events. Make sure we wait until
+    // the second so we're asserting based on the latest state.
+    evt = waitForMacEvent("AXValueChanged", (iface, data) => {
+      return (
+        iface.getAttributeValue("AXDOMIdentifier") == "checkbox" &&
+        iface.getAttributeValue("AXValue") == 2
+      );
+    });
+    checkbox.performAction("AXPress");
+    await evt;
+    is(checkbox.getAttributeValue("AXValue"), 2, "Correct checked value");
+  }
+);
+
+/**
+ * Test input[type=radio]
+ */
+addAccessibleTask(
+  `
+   
+   
+   `,
+  async (browser, accDoc) => {
+    let huey = getNativeInterface(accDoc, "huey");
+    await untilCacheIs(
+      () => huey.getAttributeValue("AXValue"),
+      1,
+      "Correct initial value for huey"
+    );
+
+    let dewey = getNativeInterface(accDoc, "dewey");
+    await untilCacheIs(
+      () => dewey.getAttributeValue("AXValue"),
+      0,
+      "Correct initial value for dewey"
+    );
+
+    let actions = dewey.actionNames;
+    ok(actions.includes("AXPress"), "Has press action");
+
+    let evt = Promise.all([
+      waitForMacEvent("AXValueChanged", "huey"),
+      waitForMacEvent("AXValueChanged", "dewey"),
+    ]);
+    dewey.performAction("AXPress");
+    await evt;
+    await untilCacheIs(
+      () => dewey.getAttributeValue("AXValue"),
+      1,
+      "Correct checked value for dewey"
+    );
+    await untilCacheIs(
+      () => huey.getAttributeValue("AXValue"),
+      0,
+      "Correct checked value for huey"
+    );
+  }
+);
+
+/**
+ * Test role=switch
+ */
+addAccessibleTask(
+  `
      hello
      `,
+  async (browser, accDoc) => {
+    let sw = getNativeInterface(accDoc, "sw");
+    await untilCacheIs(
+      () => sw.getAttributeValue("AXValue"),
+      0,
+      "Initially switch is off"
+    );
+    is(sw.getAttributeValue("AXRole"), "AXCheckBox", "Has correct role");
+    is(sw.getAttributeValue("AXSubrole"), "AXSwitch", "Has correct subrole");
+
+    let stateChanged = Promise.all([
+      waitForMacEvent("AXValueChanged", "sw"),
+      waitForStateChange("sw", STATE_CHECKED, true),
+    ]);
+
+    // We should get a state change event, and a value change.
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document
+        .getElementById("sw")
+        .setAttribute("aria-checked", "true");
+    });
+
+    await stateChanged;
+
+    await untilCacheIs(
+      () => sw.getAttributeValue("AXValue"),
+      1,
+      "Switch is now on"
+    );
+  }
+);
+
+/**
+ * Test input[type=checkbox] with role=menuitemcheckbox
+ */
+addAccessibleTask(
+  ``,
+  async (browser, accDoc) => {
+    let checkbox = getNativeInterface(accDoc, "vehicle");
+    await untilCacheIs(
+      () => checkbox.getAttributeValue("AXValue"),
+      0,
+      "Correct initial value"
+    );
+
+    let actions = checkbox.actionNames;
+    ok(actions.includes("AXPress"), "Has press action");
+
+    let evt = waitForMacEvent("AXValueChanged", "vehicle");
+    checkbox.performAction("AXPress");
+    await evt;
+    await untilCacheIs(
+      () => checkbox.getAttributeValue("AXValue"),
+      1,
+      "Correct checked value"
+    );
+
+    evt = waitForMacEvent("AXValueChanged", "vehicle");
+    checkbox.performAction("AXPress");
+    await evt;
+    await untilCacheIs(
+      () => checkbox.getAttributeValue("AXValue"),
+      0,
+      "Correct checked value"
+    );
+  }
+);
+
+/**
+ * Test input[type=radio] with role=menuitemradio
+ */
+addAccessibleTask(
+  `
+   
+   
+   `,
+  async (browser, accDoc) => {
+    let huey = getNativeInterface(accDoc, "huey");
+    await untilCacheIs(
+      () => huey.getAttributeValue("AXValue"),
+      1,
+      "Correct initial value for huey"
+    );
+
+    let dewey = getNativeInterface(accDoc, "dewey");
+    await untilCacheIs(
+      () => dewey.getAttributeValue("AXValue"),
+      0,
+      "Correct initial value for dewey"
+    );
+
+    let actions = dewey.actionNames;
+    ok(actions.includes("AXPress"), "Has press action");
+
+    let evt = Promise.all([
+      waitForMacEvent("AXValueChanged", "huey"),
+      waitForMacEvent("AXValueChanged", "dewey"),
+    ]);
+    dewey.performAction("AXPress");
+    await evt;
+    await untilCacheIs(
+      () => dewey.getAttributeValue("AXValue"),
+      1,
+      "Correct checked value for dewey"
+    );
+    await untilCacheIs(
+      () => huey.getAttributeValue("AXValue"),
+      0,
+      "Correct checked value for huey"
+    );
+  }
+);
diff --git a/accessible/tests/browser/mac/browser_webarea.js b/accessible/tests/browser/mac/browser_webarea.js
new file mode 100644
index 0000000000..ac6122de14
--- /dev/null
+++ b/accessible/tests/browser/mac/browser_webarea.js
@@ -0,0 +1,77 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+// Test web area role and AXLoadComplete event
+addAccessibleTask(``, async (browser, accDoc) => {
+  let evt = waitForMacEvent("AXLoadComplete", (iface, data) => {
+    return iface.getAttributeValue("AXDescription") == "webarea test";
+  });
+  await SpecialPowers.spawn(browser, [], () => {
+    content.location = "data:text/html,webarea test";
+  });
+  let doc = await evt;
+
+  is(
+    doc.getAttributeValue("AXRole"),
+    "AXWebArea",
+    "document has AXWebArea role"
+  );
+  is(doc.getAttributeValue("AXValue"), "", "document has no AXValue");
+  is(doc.getAttributeValue("AXTitle"), null, "document has no AXTitle");
+
+  is(doc.getAttributeValue("AXLoaded"), 1, "document has finished loading");
+});
+
+// Test iframe web area role and AXLayoutComplete event
+addAccessibleTask(`webarea test`, async (browser, accDoc) => {
+  // If the iframe loads before the top level document finishes loading, we'll
+  // get both an AXLayoutComplete event for the iframe and an AXLoadComplete
+  // event for the document. Otherwise, if the iframe loads after the
+  // document, we'll get one AXLoadComplete event.
+  let eventPromise = Promise.race([
+    waitForMacEvent("AXLayoutComplete", (iface, data) => {
+      return iface.getAttributeValue("AXDescription") == "iframe document";
+    }),
+    waitForMacEvent("AXLoadComplete", (iface, data) => {
+      return iface.getAttributeValue("AXDescription") == "webarea test";
+    }),
+  ]);
+  await SpecialPowers.spawn(browser, [], () => {
+    const iframe = content.document.createElement("iframe");
+    iframe.src = "data:text/html,iframe documenthello world";
+    content.document.body.appendChild(iframe);
+  });
+  let doc = await eventPromise;
+
+  if (doc.getAttributeValue("AXTitle")) {
+    // iframe should have no title, so if we get a title here
+    // we've got the main document and need to get the iframe from
+    // the main doc
+    doc = doc.getAttributeValue("AXChildren")[0];
+  }
+
+  is(
+    doc.getAttributeValue("AXRole"),
+    "AXWebArea",
+    "iframe document has AXWebArea role"
+  );
+  is(doc.getAttributeValue("AXValue"), "", "iframe document has no AXValue");
+  is(doc.getAttributeValue("AXTitle"), null, "iframe document has no AXTitle");
+  is(
+    doc.getAttributeValue("AXDescription"),
+    "iframe document",
+    "test has correct label"
+  );
+
+  is(
+    doc.getAttributeValue("AXLoaded"),
+    1,
+    "iframe document has finished loading"
+  );
+});
diff --git a/accessible/tests/browser/mac/doc_aria_tabs.html b/accessible/tests/browser/mac/doc_aria_tabs.html
new file mode 100644
index 0000000000..0c8f2afd6f
--- /dev/null
+++ b/accessible/tests/browser/mac/doc_aria_tabs.html
@@ -0,0 +1,95 @@
+
+
+  
+  
+
+  
+  
+  ARIA: tab role - Example - code sample
+
+
+
+  
      
+    
      
+      
+      
+      
+    
      
+    
      
+      
      Content for the first panel
      
+    
      
+    
+    
+  
      
+
diff --git a/accessible/tests/browser/mac/doc_menulist.xhtml b/accessible/tests/browser/mac/doc_menulist.xhtml
new file mode 100644
index 0000000000..d6751bc8f4
--- /dev/null
+++ b/accessible/tests/browser/mac/doc_menulist.xhtml
@@ -0,0 +1,19 @@
+
+
+
+
+  
+    
+
diff --git a/accessible/tests/browser/mac/doc_rich_listbox.xhtml b/accessible/tests/browser/mac/doc_rich_listbox.xhtml
new file mode 100644
index 0000000000..3acaf3bff8
--- /dev/null
+++ b/accessible/tests/browser/mac/doc_rich_listbox.xhtml
@@ -0,0 +1,22 @@
+
+
+
+
+  
+    
+      
+
+    
+      
+
+    
+      
+
+    
+      
+  
+
diff --git a/accessible/tests/browser/mac/doc_textmarker_test.html b/accessible/tests/browser/mac/doc_textmarker_test.html
new file mode 100644
index 0000000000..10b68b5114
--- /dev/null
+++ b/accessible/tests/browser/mac/doc_textmarker_test.html
@@ -0,0 +1,2424 @@
+
+
+  
+    
+    
+  
+  
+    
      Bob Loblaw Lobs Law Bomb
      
+    
      I love all of my children equally
      
+    
      This is the best free scrapbooking class I have ever taken
      
+    
        
+      
      • Fried cheese with club sauce
        • 
+      
      • Popcorn shrimp with club sauce
        • 
+      
      • Chicken fingers with spicy club sauce
        • 
+    
      
+    
      • Do not order the Skip's Scramble
      
+    
      These are my awards, Mother. From Army.
      
+    
      I , mom.
      
+    
+  
+
diff --git a/accessible/tests/browser/mac/doc_tree.xhtml b/accessible/tests/browser/mac/doc_tree.xhtml
new file mode 100644
index 0000000000..d043fa8923
--- /dev/null
+++ b/accessible/tests/browser/mac/doc_tree.xhtml
@@ -0,0 +1,59 @@
+
+
+
+
+  
+    
+      
+    
+    
+      
+        
+          
+        
+        
+          
+            
+              
+            
+          
+          
+            
+              
+            
+          
+        
+      
+      
+        
+          
+        
+        
+          
+            
+              
+            
+            
+              
+                
+                  
+                
+              
+              
+                
+                  
+                
+              
+            
+          
+          
+            
+              
+            
+          
+        
+      
+    
+  
+
diff --git a/accessible/tests/browser/mac/head.js b/accessible/tests/browser/mac/head.js
new file mode 100644
index 0000000000..f33f86288b
--- /dev/null
+++ b/accessible/tests/browser/mac/head.js
@@ -0,0 +1,133 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* exported getNativeInterface, waitForMacEventWithInfo, waitForMacEvent, waitForStateChange,
+   NSRange, NSDictionary, stringForRange, AXTextStateChangeTypeEdit,
+   AXTextEditTypeDelete, AXTextEditTypeTyping, AXTextStateChangeTypeSelectionMove,
+   AXTextStateChangeTypeSelectionExtend, AXTextSelectionDirectionUnknown,
+   AXTextSelectionDirectionPrevious, AXTextSelectionDirectionNext,
+   AXTextSelectionDirectionDiscontiguous, AXTextSelectionGranularityUnknown,
+   AXTextSelectionDirectionBeginning, AXTextSelectionDirectionEnd,
+   AXTextSelectionGranularityCharacter, AXTextSelectionGranularityWord,
+   AXTextSelectionGranularityLine */
+
+// Load the shared-head file first.
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js",
+  this
+);
+
+// Loading and common.js from accessible/tests/mochitest/ for all tests, as
+// well as promisified-events.js.
+loadScripts(
+  { name: "common.js", dir: MOCHITESTS_DIR },
+  { name: "promisified-events.js", dir: MOCHITESTS_DIR }
+);
+
+// AXTextStateChangeType enum values
+const AXTextStateChangeTypeEdit = 1;
+const AXTextStateChangeTypeSelectionMove = 2;
+const AXTextStateChangeTypeSelectionExtend = 3;
+
+// AXTextEditType enum values
+const AXTextEditTypeDelete = 1;
+const AXTextEditTypeTyping = 3;
+
+// AXTextSelectionDirection enum values
+const AXTextSelectionDirectionUnknown = 0;
+const AXTextSelectionDirectionBeginning = 1;
+const AXTextSelectionDirectionEnd = 2;
+const AXTextSelectionDirectionPrevious = 3;
+const AXTextSelectionDirectionNext = 4;
+const AXTextSelectionDirectionDiscontiguous = 5;
+
+// AXTextSelectionGranularity enum values
+const AXTextSelectionGranularityUnknown = 0;
+const AXTextSelectionGranularityCharacter = 1;
+const AXTextSelectionGranularityWord = 2;
+const AXTextSelectionGranularityLine = 3;
+
+function getNativeInterface(accDoc, id) {
+  return findAccessibleChildByID(accDoc, id).nativeInterface.QueryInterface(
+    Ci.nsIAccessibleMacInterface
+  );
+}
+
+function waitForMacEventWithInfo(notificationType, filter) {
+  let filterFunc = (macIface, data) => {
+    if (!filter) {
+      return true;
+    }
+
+    if (typeof filter == "function") {
+      return filter(macIface, data);
+    }
+
+    return macIface.getAttributeValue("AXDOMIdentifier") == filter;
+  };
+
+  return new Promise(resolve => {
+    let eventObserver = {
+      observe(subject, topic, data) {
+        let macEvent = subject.QueryInterface(Ci.nsIAccessibleMacEvent);
+        if (
+          data === notificationType &&
+          filterFunc(macEvent.macIface, macEvent.data)
+        ) {
+          Services.obs.removeObserver(this, "accessible-mac-event");
+          resolve(macEvent);
+        }
+      },
+    };
+    Services.obs.addObserver(eventObserver, "accessible-mac-event");
+  });
+}
+
+function waitForMacEvent(notificationType, filter) {
+  return waitForMacEventWithInfo(notificationType, filter).then(
+    e => e.macIface
+  );
+}
+
+function NSRange(location, length) {
+  return {
+    valueType: "NSRange",
+    value: [location, length],
+  };
+}
+
+function NSDictionary(dict) {
+  return {
+    objectType: "NSDictionary",
+    object: dict,
+  };
+}
+
+function stringForRange(macDoc, range) {
+  if (!range) {
+    return "";
+  }
+
+  let str = macDoc.getParameterizedAttributeValue(
+    "AXStringForTextMarkerRange",
+    range
+  );
+
+  let attrStr = macDoc.getParameterizedAttributeValue(
+    "AXAttributedStringForTextMarkerRange",
+    range
+  );
+
+  // This is a fly-by test to make sure our attributed strings
+  // always match our flat strings.
+  is(
+    attrStr.map(({ string }) => string).join(""),
+    str,
+    "attributed text matches non-attributed text"
+  );
+
+  return str;
+}
diff --git a/accessible/tests/browser/role/browser.ini b/accessible/tests/browser/role/browser.ini
new file mode 100644
index 0000000000..751f24ecc4
--- /dev/null
+++ b/accessible/tests/browser/role/browser.ini
@@ -0,0 +1,11 @@
+[DEFAULT]
+subsuite = a11y
+support-files =
+  head.js
+  !/accessible/tests/browser/shared-head.js
+  !/accessible/tests/mochitest/*.js
+  !/accessible/tests/browser/*.mjs
+prefs =
+  javascript.options.asyncstack_capture_debuggee_only=false
+
+[browser_computedARIARole.js]
diff --git a/accessible/tests/browser/role/browser_computedARIARole.js b/accessible/tests/browser/role/browser_computedARIARole.js
new file mode 100644
index 0000000000..50cfe43c98
--- /dev/null
+++ b/accessible/tests/browser/role/browser_computedARIARole.js
@@ -0,0 +1,88 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+addAccessibleTask(
+  `
+
      ARIA button
      
+
      ARIA log
      
+
      ARIA main
      
+
      ARIA region
      
+
+
      ARIA directory
      
+
      ARIA alertdialog
      
+
      ARIA feed
      
+
      ARIA rowgroup
      
+
+
      unknown ARIA role
      
+
+
+
      HTML main
      
+
      HTML header
      
+
      
+  
      HTML header inside section
      
+
      
+
      HTML region
      
+
      HTML fieldset
      
+
+  
+
      HTML tbody
      
+
+  
+    
+  
+
      HTML implicit gridcell
      
+
      HTML div
      
+HTML span
+
+  `,
+  async function (browser, docAcc) {
+    function testComputedARIARole(id, role) {
+      const acc = findAccessibleChildByID(docAcc, id);
+      is(acc.computedARIARole, role, `computedARIARole for ${id} is correct`);
+    }
+
+    testComputedARIARole("ariaButton", "button");
+    testComputedARIARole("ariaLog", "log");
+    // Landmarks map to a single Gecko role.
+    testComputedARIARole("ariaMain", "main");
+    testComputedARIARole("ariaRegion", "region");
+    // Unnamed ARIA regions should ignore the ARIA role.
+    testComputedARIARole("ariaUnnamedRegion", "navigation");
+    // The directory ARIA role is an alias of list.
+    testComputedARIARole("ariaDirectory", "list");
+    // alertdialog, feed, rowgroup and searchbox map to a Gecko role, but it
+    // isn't unique.
+    testComputedARIARole("ariaAlertdialog", "alertdialog");
+    testComputedARIARole("ariaFeed", "feed");
+    testComputedARIARole("ariaRowgroup", "rowgroup");
+    testComputedARIARole("ariaSearchbox", "searchbox");
+    testComputedARIARole("ariaUnknown", "generic");
+    testComputedARIARole("htmlButton", "button");
+    // There is only a single ARIA role for buttons, but Gecko uses different
+    // roles depending on states.
+    testComputedARIARole("toggleButton", "button");
+    testComputedARIARole("htmlMain", "main");
+    testComputedARIARole("htmlHeader", "banner");
+    // 
       only maps to the region ARIA role if it has a label.
+    testComputedARIARole("htmlSection", "generic");
+    // 
       only maps to the banner role if it is not a child of a
+    // sectioning element.
+    testComputedARIARole("htmlSectionHeader", "generic");
+    testComputedARIARole("htmlRegion", "region");
+    // Gecko doesn't have a rowgroup role. Ensure we differentiate for
+    // computedARIARole.
+    testComputedARIARole("htmlFieldset", "group");
+    testComputedARIARole("htmlTbody", "rowgroup");
+    //  inside  implicitly maps to ARIA gridcell.
+    testComputedARIARole("htmlGridcell", "gridcell");
+    // Test generics.
+    testComputedARIARole("htmlDiv", "generic");
+    testComputedARIARole("htmlSpan", "generic");
+    // Some roles can't be mapped to ARIA role tokens.
+    testComputedARIARole("iframe", "");
+  },
+  { chrome: true, topLevel: true }
+);
diff --git a/accessible/tests/browser/role/head.js b/accessible/tests/browser/role/head.js
new file mode 100644
index 0000000000..afc50984bd
--- /dev/null
+++ b/accessible/tests/browser/role/head.js
@@ -0,0 +1,18 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+// Load the shared-head file first.
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js",
+  this
+);
+
+// Loading and common.js from accessible/tests/mochitest/ for all tests, as
+// well as promisified-events.js.
+loadScripts(
+  { name: "common.js", dir: MOCHITESTS_DIR },
+  { name: "promisified-events.js", dir: MOCHITESTS_DIR }
+);
diff --git a/accessible/tests/browser/scroll/browser.ini b/accessible/tests/browser/scroll/browser.ini
new file mode 100644
index 0000000000..0cae6a7c0e
--- /dev/null
+++ b/accessible/tests/browser/scroll/browser.ini
@@ -0,0 +1,15 @@
+[DEFAULT]
+subsuite = a11y
+support-files =
+  head.js
+  !/accessible/tests/browser/shared-head.js
+  !/accessible/tests/browser/*.jsm
+  !/accessible/tests/mochitest/*.js
+prefs =
+  javascript.options.asyncstack_capture_debuggee_only=false
+
+[browser_test_zoom_text.js]
+skip-if = os == 'win' # bug 1372296
+[browser_test_scroll_bounds.js]
+[browser_test_scrollTo.js]
+[browser_test_scroll_substring.js]
diff --git a/accessible/tests/browser/scroll/browser_test_scrollTo.js b/accessible/tests/browser/scroll/browser_test_scrollTo.js
new file mode 100644
index 0000000000..43a230b7b8
--- /dev/null
+++ b/accessible/tests/browser/scroll/browser_test_scrollTo.js
@@ -0,0 +1,36 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test nsIAccessible::scrollTo.
+ */
+addAccessibleTask(
+  `
+
      
+  
      a
      
+  
      b
      
+
      
+  `,
+  async function (browser, docAcc) {
+    const scroller = findAccessibleChildByID(docAcc, "scroller");
+    // scroller can only fit one of p1 or p2, not both.
+    // p1 is on screen already.
+    const p2 = findAccessibleChildByID(docAcc, "p2");
+    info("scrollTo p2");
+    let scrolled = waitForEvent(
+      nsIAccessibleEvent.EVENT_SCROLLING_END,
+      scroller
+    );
+    p2.scrollTo(SCROLL_TYPE_ANYWHERE);
+    await scrolled;
+    const p1 = findAccessibleChildByID(docAcc, "p1");
+    info("scrollTo p1");
+    scrolled = waitForEvent(nsIAccessibleEvent.EVENT_SCROLLING_END, scroller);
+    p1.scrollTo(SCROLL_TYPE_ANYWHERE);
+    await scrolled;
+  },
+  { topLevel: true, iframe: true, remoteIframe: true, chrome: true }
+);
diff --git a/accessible/tests/browser/scroll/browser_test_scroll_bounds.js b/accessible/tests/browser/scroll/browser_test_scroll_bounds.js
new file mode 100644
index 0000000000..bd61340aa6
--- /dev/null
+++ b/accessible/tests/browser/scroll/browser_test_scroll_bounds.js
@@ -0,0 +1,606 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts(
+  { name: "layout.js", dir: MOCHITESTS_DIR },
+  { name: "role.js", dir: MOCHITESTS_DIR }
+);
+requestLongerTimeout(2);
+
+const appUnitsPerDevPixel = 60;
+
+function testCachedScrollPosition(acc, expectedX, expectedY) {
+  let cachedPosition = "";
+  try {
+    cachedPosition = acc.cache.getStringProperty("scroll-position");
+  } catch (e) {
+    // If the key doesn't exist, this means 0, 0.
+    cachedPosition = "0, 0";
+  }
+
+  // The value we retrieve from the cache is in app units, but the values
+  // passed in are in pixels. Since the retrieved value is a string,
+  // and harder to modify, adjust our expected x and y values to match its units.
+  return (
+    cachedPosition ==
+    `${expectedX * appUnitsPerDevPixel}, ${expectedY * appUnitsPerDevPixel}`
+  );
+}
+
+function getCachedBounds(acc) {
+  let cachedBounds = "";
+  try {
+    cachedBounds = acc.cache.getStringProperty("relative-bounds");
+  } catch (e) {
+    ok(false, "Unable to fetch cached bounds from cache!");
+  }
+  return cachedBounds;
+}
+
+/**
+ * Test bounds of accessibles after scrolling
+ */
+addAccessibleTask(
+  `
+  
      
+  
      
+
+  
      
+  
      
+  `,
+  async function (browser, docAcc) {
+    ok(docAcc, "iframe document acc is present");
+    await testBoundsWithContent(docAcc, "square", browser);
+    await testBoundsWithContent(docAcc, "rect", browser);
+
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("square").scrollIntoView();
+    });
+
+    await waitForContentPaint(browser);
+
+    await testBoundsWithContent(docAcc, "square", browser);
+    await testBoundsWithContent(docAcc, "rect", browser);
+
+    // Scroll rect into view, but also make it reflow so we can be sure the
+    // bounds are correct for reflowed frames.
+    await invokeContentTask(browser, [], () => {
+      const rect = content.document.getElementById("rect");
+      rect.scrollIntoView();
+      rect.style.width = "300px";
+      rect.offsetTop; // Flush layout.
+      rect.style.width = "200px";
+      rect.offsetTop; // Flush layout.
+    });
+
+    await waitForContentPaint(browser);
+    await testBoundsWithContent(docAcc, "square", browser);
+    await testBoundsWithContent(docAcc, "rect", browser);
+  },
+  { iframe: true, remoteIframe: true, chrome: true }
+);
+
+/**
+ * Test scroll offset on cached accessibles
+ */
+addAccessibleTask(
+  `
+  
      
+  
      
+
+  
      
+  
      
+  `,
+  async function (browser, docAcc) {
+    ok(docAcc, "iframe document acc is present");
+    await untilCacheOk(
+      () => testCachedScrollPosition(docAcc, 0, 0),
+      "Correct initial scroll position."
+    );
+    const rectAcc = findAccessibleChildByID(docAcc, "rect");
+    const rectInitialBounds = getCachedBounds(rectAcc);
+
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("square").scrollIntoView();
+    });
+
+    await waitForContentPaint(browser);
+
+    // The only content to scroll over is `square`'s top margin
+    // so our scroll offset here should be 3000px
+    await untilCacheOk(
+      () => testCachedScrollPosition(docAcc, 0, 3000),
+      "Correct scroll position after first scroll."
+    );
+
+    // Scroll rect into view, but also make it reflow so we can be sure the
+    // bounds are correct for reflowed frames.
+    await invokeContentTask(browser, [], () => {
+      const rect = content.document.getElementById("rect");
+      rect.scrollIntoView();
+      rect.style.width = "300px";
+      rect.offsetTop;
+      rect.style.width = "200px";
+    });
+
+    await waitForContentPaint(browser);
+    // We have to scroll over `square`'s top margin (3000px),
+    // `square` itself (100px), and `square`'s bottom margin (4000px).
+    // This should give us a 7100px offset.
+    await untilCacheOk(
+      () => testCachedScrollPosition(docAcc, 0, 7100),
+      "Correct final scroll position."
+    );
+    await untilCacheIs(
+      () => getCachedBounds(rectAcc),
+      rectInitialBounds,
+      "Cached relative bounds don't change when scrolling"
+    );
+  },
+  { iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test scroll offset fixed-pos acc accs
+ */
+addAccessibleTask(
+  `
+  
      
+    
      
+      
+    
      
+  
      
+  `,
+  async function (browser, docAcc) {
+    const origTopBounds = await testBoundsWithContent(docAcc, "top", browser);
+    const origDBounds = await testBoundsWithContent(docAcc, "d", browser);
+    const e = waitForEvent(EVENT_REORDER, docAcc);
+    await invokeContentTask(browser, [], () => {
+      for (let i = 0; i < 1000; ++i) {
+        const div = content.document.createElement("div");
+        div.innerHTML = "";
+        content.document.body.append(div);
+      }
+    });
+    await e;
+
+    await invokeContentTask(browser, [], () => {
+      // scroll to the bottom of the page
+      content.window.scrollTo(0, content.document.body.scrollHeight);
+    });
+
+    await waitForContentPaint(browser);
+
+    let newTopBounds = await testBoundsWithContent(docAcc, "top", browser);
+    let newDBounds = await testBoundsWithContent(docAcc, "d", browser);
+    is(
+      origTopBounds[0],
+      newTopBounds[0],
+      "x of fixed elem is unaffected by scrolling"
+    );
+    is(
+      origTopBounds[1],
+      newTopBounds[1],
+      "y of fixed elem is unaffected by scrolling"
+    );
+    is(
+      origTopBounds[2],
+      newTopBounds[2],
+      "width of fixed elem is unaffected by scrolling"
+    );
+    is(
+      origTopBounds[3],
+      newTopBounds[3],
+      "height of fixed elem is unaffected by scrolling"
+    );
+    is(
+      origDBounds[0],
+      newTopBounds[0],
+      "x of fixed elem container is unaffected by scrolling"
+    );
+    is(
+      origDBounds[1],
+      newDBounds[1],
+      "y of fixed elem container is unaffected by scrolling"
+    );
+    is(
+      origDBounds[2],
+      newDBounds[2],
+      "width of fixed container elem is unaffected by scrolling"
+    );
+    is(
+      origDBounds[3],
+      newDBounds[3],
+      "height of fixed container elem is unaffected by scrolling"
+    );
+
+    await invokeContentTask(browser, [], () => {
+      // remove position styling
+      content.document.getElementById("d").style = "";
+    });
+
+    await waitForContentPaint(browser);
+
+    newTopBounds = await testBoundsWithContent(docAcc, "top", browser);
+    newDBounds = await testBoundsWithContent(docAcc, "d", browser);
+    is(
+      origTopBounds[0],
+      newTopBounds[0],
+      "x of non-fixed element remains accurate."
+    );
+    ok(newTopBounds[1] < 0, "y coordinate shows item scrolled off page");
+    is(
+      origTopBounds[2],
+      newTopBounds[2],
+      "width of non-fixed element remains accurate."
+    );
+    is(
+      origTopBounds[3],
+      newTopBounds[3],
+      "height of non-fixed element remains accurate."
+    );
+    is(
+      origDBounds[0],
+      newDBounds[0],
+      "x of non-fixed container element remains accurate."
+    );
+    ok(newDBounds[1] < 0, "y coordinate shows container scrolled off page");
+    // Removing the position styling on this acc causes it to be bound by
+    // its parent's bounding box, which alters its width as a block element.
+    // We don't particularly care about width in this test, so skip it.
+    is(
+      origDBounds[3],
+      newDBounds[3],
+      "height of non-fixed container element remains accurate."
+    );
+
+    await invokeContentTask(browser, [], () => {
+      // re-add position styling
+      content.document.getElementById("d").style = "position:fixed;";
+    });
+
+    await waitForContentPaint(browser);
+
+    newTopBounds = await testBoundsWithContent(docAcc, "top", browser);
+    newDBounds = await testBoundsWithContent(docAcc, "d", browser);
+    is(
+      origTopBounds[0],
+      newTopBounds[0],
+      "x correct when position:fixed is added."
+    );
+    is(
+      origTopBounds[1],
+      newTopBounds[1],
+      "y correct when position:fixed is added."
+    );
+    is(
+      origTopBounds[2],
+      newTopBounds[2],
+      "width correct when position:fixed is added."
+    );
+    is(
+      origTopBounds[3],
+      newTopBounds[3],
+      "height correct when position:fixed is added."
+    );
+    is(
+      origDBounds[0],
+      newDBounds[0],
+      "x of container correct when position:fixed is added."
+    );
+    is(
+      origDBounds[1],
+      newDBounds[1],
+      "y of container correct when position:fixed is added."
+    );
+    is(
+      origDBounds[2],
+      newDBounds[2],
+      "width of container correct when position:fixed is added."
+    );
+    is(
+      origDBounds[3],
+      newDBounds[3],
+      "height of container correct when position:fixed is added."
+    );
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test position: fixed for containers that would otherwise be pruned from the
+ * a11y tree.
+ */
+addAccessibleTask(
+  `
+
      
+  
+
+
+
      
+
      bottom
      
+  `,
+  async function (browser, docAcc) {
+    const fixed = findAccessibleChildByID(docAcc, "fixed");
+    ok(fixed, "fixed is accessible");
+    isnot(fixed.role, ROLE_TABLE, "fixed doesn't have ROLE_TABLE");
+    ok(!findAccessibleChildByID(docAcc, "mutate"), "mutate inaccessible");
+    info("Setting position: fixed on mutate");
+    let shown = waitForEvent(EVENT_SHOW, "mutate");
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("mutate").style.position = "fixed";
+    });
+    await shown;
+    const origFixedBounds = await testBoundsWithContent(
+      docAcc,
+      "fixed",
+      browser
+    );
+    const origMutateBounds = await testBoundsWithContent(
+      docAcc,
+      "mutate",
+      browser
+    );
+    info("Scrolling to bottom of page");
+    await invokeContentTask(browser, [], () => {
+      content.window.scrollTo(0, content.document.body.scrollHeight);
+    });
+    await waitForContentPaint(browser);
+    const newFixedBounds = await testBoundsWithContent(
+      docAcc,
+      "fixed",
+      browser
+    );
+    Assert.deepEqual(
+      newFixedBounds,
+      origFixedBounds,
+      "fixed bounds are unchanged"
+    );
+    const newMutateBounds = await testBoundsWithContent(
+      docAcc,
+      "mutate",
+      browser
+    );
+    Assert.deepEqual(
+      newMutateBounds,
+      origMutateBounds,
+      "mutate bounds are unchanged"
+    );
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test scroll offset on sticky-pos acc
+ */
+addAccessibleTask(
+  `
+  
      
+    
+  
      
+  `,
+  async function (browser, docAcc) {
+    const containerBounds = await testBoundsWithContent(docAcc, "d", browser);
+    const e = waitForEvent(EVENT_REORDER, docAcc);
+    await invokeContentTask(browser, [], () => {
+      for (let i = 0; i < 1000; ++i) {
+        const div = content.document.createElement("div");
+        div.innerHTML = "";
+        content.document.body.append(div);
+      }
+    });
+    await e;
+    for (let id of ["d", "top"]) {
+      info(`Verifying bounds for acc with ID ${id}`);
+      const origBounds = await testBoundsWithContent(docAcc, id, browser);
+
+      info("Scrolling partially");
+      await invokeContentTask(browser, [], () => {
+        // scroll some of the window
+        content.window.scrollTo(0, 50);
+      });
+
+      await waitForContentPaint(browser);
+
+      let newBounds = await testBoundsWithContent(docAcc, id, browser);
+      is(
+        origBounds[0],
+        newBounds[0],
+        `x coord of sticky element is unaffected by scrolling`
+      );
+      ok(
+        origBounds[1] > newBounds[1] && newBounds[1] >= 0,
+        "sticky element scrolled, but not off the page"
+      );
+      is(
+        origBounds[2],
+        newBounds[2],
+        `width of sticky element is unaffected by scrolling`
+      );
+      is(
+        origBounds[3],
+        newBounds[3],
+        `height of sticky element is unaffected by scrolling`
+      );
+
+      info("Scrolling to bottom");
+      await invokeContentTask(browser, [], () => {
+        // scroll to the bottom of the page
+        content.window.scrollTo(0, content.document.body.scrollHeight);
+      });
+
+      await waitForContentPaint(browser);
+
+      newBounds = await testBoundsWithContent(docAcc, id, browser);
+      is(
+        origBounds[0],
+        newBounds[0],
+        `x coord of sticky element is unaffected by scrolling`
+      );
+      // Subtract margin from container screen coords to get chrome height
+      // which is where our y pos should be
+      is(
+        newBounds[1],
+        containerBounds[1] - 100,
+        "Sticky element is top of screen"
+      );
+      is(
+        origBounds[2],
+        newBounds[2],
+        `width of sticky element is unaffected by scrolling`
+      );
+      is(
+        origBounds[3],
+        newBounds[3],
+        `height of sticky element is unaffected by scrolling`
+      );
+
+      info("Removing position style on container");
+      await invokeContentTask(browser, [], () => {
+        // remove position styling
+        content.document.getElementById("d").style =
+          "margin-top: 100px; margin-left: 75px;";
+      });
+
+      await waitForContentPaint(browser);
+
+      newBounds = await testBoundsWithContent(docAcc, id, browser);
+
+      is(
+        origBounds[0],
+        newBounds[0],
+        `x coord of non-sticky element remains accurate.`
+      );
+      ok(newBounds[1] < 0, "y coordinate shows item scrolled off page");
+
+      // Removing the position styling on this acc causes it to be bound by
+      // its parent's bounding box, which alters its width as a block element.
+      // We don't particularly care about width in this test, so skip it.
+      is(
+        origBounds[3],
+        newBounds[3],
+        `height of non-sticky element remains accurate.`
+      );
+
+      info("Adding position style on container");
+      await invokeContentTask(browser, [], () => {
+        // re-add position styling
+        content.document.getElementById("d").style =
+          "margin-top: 100px; margin-left: 75px; position:sticky; top:0px;";
+      });
+
+      await waitForContentPaint(browser);
+
+      newBounds = await testBoundsWithContent(docAcc, id, browser);
+      is(
+        origBounds[0],
+        newBounds[0],
+        `x coord of sticky element is unaffected by scrolling`
+      );
+      is(
+        newBounds[1],
+        containerBounds[1] - 100,
+        "Sticky element is top of screen"
+      );
+      is(
+        origBounds[2],
+        newBounds[2],
+        `width of sticky element is unaffected by scrolling`
+      );
+      is(
+        origBounds[3],
+        newBounds[3],
+        `height of sticky element is unaffected by scrolling`
+      );
+
+      info("Scrolling back up to test next ID");
+      await invokeContentTask(browser, [], () => {
+        // scroll some of the window
+        content.window.scrollTo(0, 0);
+      });
+    }
+  },
+  { chrome: false, iframe: false, remoteIframe: false }
+);
+
+/**
+ * Test position: sticky for containers that would otherwise be pruned from the
+ * a11y tree.
+ */
+addAccessibleTask(
+  `
+
      
+
      
+  
+  
      
+  
      stickyEnd
      
+
      
+
      
+  
+  
      
+  
      mutateEnd
      
+
      
+  `,
+  async function (browser, docAcc) {
+    ok(findAccessibleChildByID(docAcc, "sticky"), "sticky is accessible");
+    info("Scrolling to sticky");
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("sticky").scrollIntoView();
+    });
+    await waitForContentPaint(browser);
+    const origStickyBounds = await testBoundsWithContent(
+      docAcc,
+      "sticky",
+      browser
+    );
+    info("Scrolling to stickyEnd");
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("stickyEnd").scrollIntoView();
+    });
+    await waitForContentPaint(browser);
+    const newStickyBounds = await testBoundsWithContent(
+      docAcc,
+      "sticky",
+      browser
+    );
+    Assert.deepEqual(
+      newStickyBounds,
+      origStickyBounds,
+      "sticky bounds are unchanged"
+    );
+
+    ok(!findAccessibleChildByID(docAcc, "mutate"), "mutate inaccessible");
+    info("Setting position: sticky on mutate");
+    let shown = waitForEvent(EVENT_SHOW, "mutate");
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("mutate").style.position = "sticky";
+    });
+    await shown;
+    info("Scrolling to mutate");
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("mutate").scrollIntoView();
+    });
+    await waitForContentPaint(browser);
+    const origMutateBounds = await testBoundsWithContent(
+      docAcc,
+      "mutate",
+      browser
+    );
+    info("Scrolling to mutateEnd");
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("mutateEnd").scrollIntoView();
+    });
+    await waitForContentPaint(browser);
+    const newMutateBounds = await testBoundsWithContent(
+      docAcc,
+      "mutate",
+      browser
+    );
+    assertBoundsFuzzyEqual(newMutateBounds, origMutateBounds);
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/scroll/browser_test_scroll_substring.js b/accessible/tests/browser/scroll/browser_test_scroll_substring.js
new file mode 100644
index 0000000000..e8426d00ca
--- /dev/null
+++ b/accessible/tests/browser/scroll/browser_test_scroll_substring.js
@@ -0,0 +1,67 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/layout.js */
+loadScripts({ name: "layout.js", dir: MOCHITESTS_DIR });
+
+/**
+ * Test nsIAccessibleText::scrollSubstringTo.
+ */
+addAccessibleTask(
+  `
+  
+  
      +
+
+
+
+
+It's a jetpack, Michael. What could possibly go wrong?
+
+
+
+
+
+The only thing I found in the fridge was a dead dove in a bag.
+
      `,
+  async function (browser, docAcc) {
+    let text = findAccessibleChildByID(docAcc, "text", [nsIAccessibleText]);
+    let [, containerY, , containerHeight] = getBounds(text);
+    let getCharY = () => {
+      let objY = {};
+      text.getCharacterExtents(7, {}, objY, {}, {}, COORDTYPE_SCREEN_RELATIVE);
+      return objY.value;
+    };
+    ok(
+      containerHeight < getCharY(),
+      "Character is outside of container bounds"
+    );
+    text.scrollSubstringTo(7, 8, SCROLL_TYPE_TOP_EDGE);
+
+    await waitForContentPaint(browser);
+    await untilCacheIs(
+      getCharY,
+      containerY,
+      "Character is scrolled to top of container"
+    );
+  },
+  {
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+    chrome: true,
+  }
+);
diff --git a/accessible/tests/browser/scroll/browser_test_zoom_text.js b/accessible/tests/browser/scroll/browser_test_zoom_text.js
new file mode 100644
index 0000000000..4fc0a56b43
--- /dev/null
+++ b/accessible/tests/browser/scroll/browser_test_zoom_text.js
@@ -0,0 +1,145 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/layout.js */
+loadScripts({ name: "layout.js", dir: MOCHITESTS_DIR });
+
+async function runTests(browser, accDoc) {
+  await loadContentScripts(browser, {
+    script: "Layout.sys.mjs",
+    symbol: "Layout",
+  });
+
+  let paragraph = findAccessibleChildByID(accDoc, "paragraph", [
+    nsIAccessibleText,
+  ]);
+  let offset = 64; // beginning of 4th stanza
+
+  let [x /* ,y*/] = getPos(paragraph);
+  let [docX, docY] = getPos(accDoc);
+
+  paragraph.scrollSubstringToPoint(
+    offset,
+    offset,
+    COORDTYPE_SCREEN_RELATIVE,
+    docX,
+    docY
+  );
+
+  await waitForContentPaint(browser);
+  testTextPos(paragraph, offset, [x, docY], COORDTYPE_SCREEN_RELATIVE);
+
+  await SpecialPowers.spawn(browser, [], () => {
+    content.Layout.zoomDocument(content.document, 2.0);
+  });
+
+  paragraph = findAccessibleChildByID(accDoc, "paragraph2", [
+    nsIAccessibleText,
+  ]);
+  offset = 52; // // beginning of 4th stanza
+  [x /* ,y*/] = getPos(paragraph);
+  paragraph.scrollSubstringToPoint(
+    offset,
+    offset,
+    COORDTYPE_SCREEN_RELATIVE,
+    docX,
+    docY
+  );
+
+  await waitForContentPaint(browser);
+  testTextPos(paragraph, offset, [x, docY], COORDTYPE_SCREEN_RELATIVE);
+}
+
+/**
+ * Test caching of accessible object states
+ */
+addAccessibleTask(
+  `
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  
      
+    Пошел котик на торжок
      
+    Купил котик пирожок
      
+    Пошел котик на улочку
      
+    Купил котик булочку
      
+  
      
+  










      
+  









      
+  









      
+  









      
+  









      
+  









      
+  
      
+    Самому ли съесть
      
+    Либо Сашеньке снесть
      
+    Я и сам укушу
      
+    Я и Сашеньке снесу
      
+  
      
+  










      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      
+  









      `,
+  runTests
+);
diff --git a/accessible/tests/browser/scroll/head.js b/accessible/tests/browser/scroll/head.js
new file mode 100644
index 0000000000..afc50984bd
--- /dev/null
+++ b/accessible/tests/browser/scroll/head.js
@@ -0,0 +1,18 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+// Load the shared-head file first.
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js",
+  this
+);
+
+// Loading and common.js from accessible/tests/mochitest/ for all tests, as
+// well as promisified-events.js.
+loadScripts(
+  { name: "common.js", dir: MOCHITESTS_DIR },
+  { name: "promisified-events.js", dir: MOCHITESTS_DIR }
+);
diff --git a/accessible/tests/browser/selectable/browser.ini b/accessible/tests/browser/selectable/browser.ini
new file mode 100644
index 0000000000..45e34f82d3
--- /dev/null
+++ b/accessible/tests/browser/selectable/browser.ini
@@ -0,0 +1,12 @@
+[DEFAULT]
+subsuite = a11y
+support-files =
+  head.js
+  !/accessible/tests/browser/shared-head.js
+  !/accessible/tests/browser/*.jsm
+  !/accessible/tests/mochitest/*.js
+prefs =
+  javascript.options.asyncstack_capture_debuggee_only=false
+
+[browser_test_aria_select.js]
+[browser_test_select.js]
diff --git a/accessible/tests/browser/selectable/browser_test_aria_select.js b/accessible/tests/browser/selectable/browser_test_aria_select.js
new file mode 100644
index 0000000000..f52603d1cb
--- /dev/null
+++ b/accessible/tests/browser/selectable/browser_test_aria_select.js
@@ -0,0 +1,164 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/selectable.js */
+
+// ////////////////////////////////////////////////////////////////////////
+// role="tablist" role="listbox" role="grid" role="tree" role="treegrid"
+addAccessibleTask(
+  `
      
+      
      tab1
      
+      
      tab2
      
+    
      
+    
      
+      
      item1
      
+      
      item2
      
+    
      
+    
      
+    
      
+      cell
+      cell
+    
      
+    
      
+      cell
+      cell
+    
      
+    
      
+    
      
+      
      
+        item1
+        
      
+          
      item1.1
      
+        
      
+      
      
+      
      item2
      
+    
      
+    
      
+      
      
+        cell
+        cell
+      
      
+      
      
+        cell
+        cell
+      
      
+      
      
+        cell
+        cell
+      
      
+    
      `,
+  async function (browser, docAcc) {
+    info(
+      'role="tablist" role="listbox" role="grid" role="tree" role="treegrid"'
+    );
+    testSelectableSelection(findAccessibleChildByID(docAcc, "tablist"), []);
+    testSelectableSelection(findAccessibleChildByID(docAcc, "listbox"), []);
+    testSelectableSelection(findAccessibleChildByID(docAcc, "grid"), []);
+    testSelectableSelection(findAccessibleChildByID(docAcc, "tree"), []);
+    testSelectableSelection(findAccessibleChildByID(docAcc, "treegrid"), []);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+// ////////////////////////////////////////////////////////////////////////
+// role="tablist" aria-multiselectable
+addAccessibleTask(
+  `
      
+     
+     
+   
      `,
+  async function (browser, docAcc) {
+    info('role="tablist" aria-multiselectable');
+    let tablist = findAccessibleChildByID(docAcc, "tablist", [
+      nsIAccessibleSelectable,
+    ]);
+
+    await testMultiSelectable(tablist, ["tab_multi1", "tab_multi2"]);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+// ////////////////////////////////////////////////////////////////////////
+// role="listbox" aria-multiselectable
+addAccessibleTask(
+  `
      
+     
      item1
      
+     
      item2
      
+   
      `,
+  async function (browser, docAcc) {
+    info('role="listbox" aria-multiselectable');
+    let listbox = findAccessibleChildByID(docAcc, "listbox", [
+      nsIAccessibleSelectable,
+    ]);
+
+    await testMultiSelectable(listbox, ["listbox2_item1", "listbox2_item2"]);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+// ////////////////////////////////////////////////////////////////////////
+// role="grid" aria-multiselectable, selectable children in subtree
+addAccessibleTask(
+  `
+    
+      
+        
+        
+        
+      
+    
+    
+      
+        
+        
+        
+      
+    
+  
      Entry #DateExpense
      103/14/05Conference Fee
      `,
+  async function (browser, docAcc) {
+    info('role="grid" aria-multiselectable, selectable children in subtree');
+    let grid = findAccessibleChildByID(docAcc, "grid", [
+      nsIAccessibleSelectable,
+    ]);
+
+    await testMultiSelectable(grid, [
+      "grid_colhead1",
+      "grid_colhead2",
+      "grid_colhead3",
+      "grid_rowhead",
+      "grid_cell1",
+      "grid_cell2",
+    ]);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
diff --git a/accessible/tests/browser/selectable/browser_test_select.js b/accessible/tests/browser/selectable/browser_test_select.js
new file mode 100644
index 0000000000..f86a371d81
--- /dev/null
+++ b/accessible/tests/browser/selectable/browser_test_select.js
@@ -0,0 +1,329 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/selectable.js */
+/* import-globals-from ../../mochitest/states.js */
+
+// ////////////////////////////////////////////////////////////////////////
+// select@size="1" aka combobox
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    info("select@size='1' aka combobox");
+    let combobox = findAccessibleChildByID(docAcc, "combobox");
+    let comboboxList = combobox.firstChild;
+    ok(
+      isAccessible(comboboxList, [nsIAccessibleSelectable]),
+      "No selectable accessible for combobox"
+    );
+
+    let select = getAccessible(comboboxList, [nsIAccessibleSelectable]);
+    testSelectableSelection(select, ["item1"]);
+
+    // select 2nd item
+    let promise = Promise.all([
+      waitForStateChange("item2", STATE_SELECTED, true),
+      waitForStateChange("item1", STATE_SELECTED, false),
+    ]);
+    select.addItemToSelection(1);
+    await promise;
+    testSelectableSelection(select, ["item2"], "addItemToSelection(1): ");
+
+    // unselect 2nd item, 1st item gets selected automatically
+    promise = Promise.all([
+      waitForStateChange("item2", STATE_SELECTED, false),
+      waitForStateChange("item1", STATE_SELECTED, true),
+    ]);
+    select.removeItemFromSelection(1);
+    await promise;
+    testSelectableSelection(select, ["item1"], "removeItemFromSelection(1): ");
+
+    // doesn't change selection
+    is(select.selectAll(), false, "No way to select all items in combobox");
+    testSelectableSelection(select, ["item1"], "selectAll: ");
+
+    // doesn't change selection
+    select.unselectAll();
+    testSelectableSelection(select, ["item1"], "unselectAll: ");
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+// ////////////////////////////////////////////////////////////////////////
+// select@size="1" with optgroups
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    info("select@size='1' with optgroups");
+    let combobox = findAccessibleChildByID(docAcc, "combobox");
+    let comboboxList = combobox.firstChild;
+    ok(
+      isAccessible(comboboxList, [nsIAccessibleSelectable]),
+      "No selectable accessible for combobox"
+    );
+
+    let select = getAccessible(comboboxList, [nsIAccessibleSelectable]);
+    testSelectableSelection(select, ["item1"]);
+
+    let promise = Promise.all([
+      waitForStateChange("item2", STATE_SELECTED, true),
+      waitForStateChange("item1", STATE_SELECTED, false),
+    ]);
+    select.addItemToSelection(1);
+    await promise;
+    testSelectableSelection(select, ["item2"], "addItemToSelection(1): ");
+
+    promise = Promise.all([
+      waitForStateChange("item2", STATE_SELECTED, false),
+      waitForStateChange("item1", STATE_SELECTED, true),
+    ]);
+    select.removeItemFromSelection(1);
+    await promise;
+    testSelectableSelection(select, ["item1"], "removeItemFromSelection(1): ");
+
+    is(select.selectAll(), false, "No way to select all items in combobox");
+    testSelectableSelection(select, ["item1"]);
+
+    select.unselectAll();
+    testSelectableSelection(select, ["item1"]);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+// ////////////////////////////////////////////////////////////////////////
+// select@size="4" aka single selectable listbox
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    info("select@size='4' aka single selectable listbox");
+    let select = findAccessibleChildByID(docAcc, "listbox", [
+      nsIAccessibleSelectable,
+    ]);
+    testSelectableSelection(select, []);
+
+    // select 2nd item
+    let promise = waitForStateChange("item2", STATE_SELECTED, true);
+    select.addItemToSelection(1);
+    await promise;
+    testSelectableSelection(select, ["item2"], "addItemToSelection(1): ");
+
+    // unselect 2nd item, 1st item gets selected automatically
+    promise = waitForStateChange("item2", STATE_SELECTED, false);
+    select.removeItemFromSelection(1);
+    await promise;
+    testSelectableSelection(select, [], "removeItemFromSelection(1): ");
+
+    // doesn't change selection
+    is(
+      select.selectAll(),
+      false,
+      "No way to select all items in single selectable listbox"
+    );
+    testSelectableSelection(select, [], "selectAll: ");
+
+    // doesn't change selection
+    select.unselectAll();
+    testSelectableSelection(select, [], "unselectAll: ");
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+// ////////////////////////////////////////////////////////////////////////
+// select@size="4" with optgroups, single selectable
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    info("select@size='4' with optgroups, single selectable");
+    let select = findAccessibleChildByID(docAcc, "listbox", [
+      nsIAccessibleSelectable,
+    ]);
+    testSelectableSelection(select, []);
+
+    let promise = waitForStateChange("item2", STATE_SELECTED, true);
+    select.addItemToSelection(1);
+    await promise;
+    testSelectableSelection(select, ["item2"]);
+
+    promise = waitForStateChange("item2", STATE_SELECTED, false);
+    select.removeItemFromSelection(1);
+    await promise;
+    testSelectableSelection(select, []);
+
+    is(
+      select.selectAll(),
+      false,
+      "No way to select all items in single selectable listbox"
+    );
+    testSelectableSelection(select, []);
+
+    select.unselectAll();
+    testSelectableSelection(select, []);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+// ////////////////////////////////////////////////////////////////////////
+// select@size="4" multiselect aka listbox
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    info("select@size='4' multiselect aka listbox");
+    let select = findAccessibleChildByID(docAcc, "listbox", [
+      nsIAccessibleSelectable,
+    ]);
+    await testMultiSelectable(
+      select,
+      ["item1", "item2"],
+      "select@size='4' multiselect aka listbox "
+    );
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+// ////////////////////////////////////////////////////////////////////////
+// select@size="4" multiselect with optgroups
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    info("select@size='4' multiselect with optgroups");
+    let select = findAccessibleChildByID(docAcc, "listbox", [
+      nsIAccessibleSelectable,
+    ]);
+    await testMultiSelectable(
+      select,
+      ["item1", "item2"],
+      "select@size='4' multiselect aka listbox "
+    );
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+// ////////////////////////////////////////////////////////////////////////
+// multiselect with coalesced selection event
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    info("select@size='4' multiselect with coalesced selection event");
+    let select = findAccessibleChildByID(docAcc, "listbox", [
+      nsIAccessibleSelectable,
+    ]);
+    await testMultiSelectable(
+      select,
+      [
+        "item1",
+        "item2",
+        "item3",
+        "item4",
+        "item5",
+        "item6",
+        "item7",
+        "item8",
+        "item9",
+      ],
+      "select@size='4' multiselect with coalesced selection event "
+    );
+  },
+  {
+    chrome: false,
+    topLevel: true,
+    iframe: false,
+    remoteIframe: false,
+  }
+);
+
+/**
+ * Ensure that we don't assert when dealing with defunct items in selection
+ * events dropped due to coalescence (bug 1800755).
+ */
+addAccessibleTask(
+  `
+
      
+  
+
      
+  `,
+  async function (browser, docAcc) {
+    let selected = waitForEvent(EVENT_SELECTION_WITHIN, "select");
+    await invokeContentTask(browser, [], () => {
+      const form = content.document.getElementById("form");
+      const select = content.document.getElementById("select");
+      const optgroup = content.document.getElementById("optgroup");
+      form.reset();
+      select.selectedIndex = 1;
+      select.add(optgroup);
+      select.item(0).remove();
+    });
+    await selected;
+  }
+);
diff --git a/accessible/tests/browser/selectable/head.js b/accessible/tests/browser/selectable/head.js
new file mode 100644
index 0000000000..ccf9e86f77
--- /dev/null
+++ b/accessible/tests/browser/selectable/head.js
@@ -0,0 +1,88 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* exported testMultiSelectable */
+
+// Load the shared-head file first.
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js",
+  this
+);
+
+// Loading and common.js from accessible/tests/mochitest/ for all tests, as
+// well as promisified-events.js.
+/* import-globals-from ../../mochitest/selectable.js */
+/* import-globals-from ../../mochitest/states.js */
+loadScripts(
+  { name: "common.js", dir: MOCHITESTS_DIR },
+  { name: "promisified-events.js", dir: MOCHITESTS_DIR },
+  { name: "selectable.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR },
+  { name: "role.js", dir: MOCHITESTS_DIR }
+);
+
+// Handle case where multiple selection change events are coalesced into
+// a SELECTION_WITHIN event. Promise resolves to true in that case.
+function multipleSelectionChanged(widget, changedChildren, selected) {
+  return Promise.race([
+    Promise.all(
+      changedChildren.map(id =>
+        waitForStateChange(id, STATE_SELECTED, selected)
+      )
+    ).then(() => false),
+    waitForEvent(EVENT_SELECTION_WITHIN, widget).then(() => true),
+  ]);
+}
+
+async function testMultiSelectable(widget, selectableChildren, msg = "") {
+  let isRemote = false;
+  try {
+    widget.DOMNode;
+  } catch (e) {
+    isRemote = true;
+  }
+
+  testSelectableSelection(widget, [], `${msg}: initial`);
+
+  let promise = waitForStateChange(selectableChildren[0], STATE_SELECTED, true);
+  widget.addItemToSelection(0);
+  await promise;
+  testSelectableSelection(
+    widget,
+    [selectableChildren[0]],
+    `${msg}: addItemToSelection(0)`
+  );
+
+  promise = waitForStateChange(selectableChildren[0], STATE_SELECTED, false);
+  widget.removeItemFromSelection(0);
+  await promise;
+  testSelectableSelection(widget, [], `${msg}: removeItemFromSelection(0)`);
+
+  promise = multipleSelectionChanged(widget, selectableChildren, true);
+  let success = widget.selectAll();
+  ok(success, `${msg}: selectAll success`);
+  await promise;
+  if (isRemote) {
+    await untilCacheIs(
+      () => widget.selectedItemCount,
+      selectableChildren.length,
+      "Selection cache updated"
+    );
+  }
+  testSelectableSelection(widget, selectableChildren, `${msg}: selectAll`);
+
+  promise = multipleSelectionChanged(widget, selectableChildren, false);
+  widget.unselectAll();
+  await promise;
+  if (isRemote) {
+    await untilCacheIs(
+      () => widget.selectedItemCount,
+      0,
+      "Selection cache updated"
+    );
+  }
+  testSelectableSelection(widget, [], `${msg}: selectAll`);
+}
diff --git a/accessible/tests/browser/shared-head.js b/accessible/tests/browser/shared-head.js
new file mode 100644
index 0000000000..9037802728
--- /dev/null
+++ b/accessible/tests/browser/shared-head.js
@@ -0,0 +1,918 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../mochitest/common.js */
+/* import-globals-from ../mochitest/layout.js */
+/* import-globals-from ../mochitest/promisified-events.js */
+
+/* exported Logger, MOCHITESTS_DIR, invokeSetAttribute, invokeFocus,
+            invokeSetStyle, getAccessibleDOMNodeID, getAccessibleTagName,
+            addAccessibleTask, findAccessibleChildByID, isDefunct,
+            CURRENT_CONTENT_DIR, loadScripts, loadContentScripts, snippetToURL,
+            Cc, Cu, arrayFromChildren, forceGC, contentSpawnMutation,
+            DEFAULT_IFRAME_ID, DEFAULT_IFRAME_DOC_BODY_ID, invokeContentTask,
+            matchContentDoc, currentContentDoc, getContentDPR,
+            waitForImageMap, getContentBoundsForDOMElm, untilCacheIs, untilCacheOk, testBoundsWithContent, waitForContentPaint */
+
+const CURRENT_FILE_DIR = "/browser/accessible/tests/browser/";
+
+/**
+ * Current browser test directory path used to load subscripts.
+ */
+const CURRENT_DIR = `chrome://mochitests/content${CURRENT_FILE_DIR}`;
+/**
+ * A11y mochitest directory where we find common files used in both browser and
+ * plain tests.
+ */
+const MOCHITESTS_DIR =
+  "chrome://mochitests/content/a11y/accessible/tests/mochitest/";
+/**
+ * A base URL for test files used in content.
+ */
+// eslint-disable-next-line @microsoft/sdl/no-insecure-url
+const CURRENT_CONTENT_DIR = `http://example.com${CURRENT_FILE_DIR}`;
+
+const LOADED_CONTENT_SCRIPTS = new Map();
+
+const DEFAULT_CONTENT_DOC_BODY_ID = "body";
+const DEFAULT_IFRAME_ID = "default-iframe-id";
+const DEFAULT_IFRAME_DOC_BODY_ID = "default-iframe-body-id";
+
+const HTML_MIME_TYPE = "text/html";
+const XHTML_MIME_TYPE = "application/xhtml+xml";
+
+function loadHTMLFromFile(path) {
+  // Load the HTML to return in the response from file.
+  // Since it's relative to the cwd of the test runner, we start there and
+  // append to get to the actual path of the file.
+  const testHTMLFile = Services.dirsvc.get("CurWorkD", Ci.nsIFile);
+  const dirs = path.split("/");
+  for (let i = 0; i < dirs.length; i++) {
+    testHTMLFile.append(dirs[i]);
+  }
+
+  const testHTMLFileStream = Cc[
+    "@mozilla.org/network/file-input-stream;1"
+  ].createInstance(Ci.nsIFileInputStream);
+  testHTMLFileStream.init(testHTMLFile, -1, 0, 0);
+  const testHTML = NetUtil.readInputStreamToString(
+    testHTMLFileStream,
+    testHTMLFileStream.available()
+  );
+
+  return testHTML;
+}
+
+let gIsIframe = false;
+let gIsRemoteIframe = false;
+
+function currentContentDoc() {
+  return gIsIframe ? DEFAULT_IFRAME_DOC_BODY_ID : DEFAULT_CONTENT_DOC_BODY_ID;
+}
+
+/**
+ * Accessible event match criteria based on the id of the current document
+ * accessible in test.
+ *
+ * @param   {nsIAccessibleEvent}  event
+ *        Accessible event to be tested for a match.
+ *
+ * @return  {Boolean}
+ *          True if accessible event's accessible object ID matches current
+ *          document accessible ID.
+ */
+function matchContentDoc(event) {
+  return getAccessibleDOMNodeID(event.accessible) === currentContentDoc();
+}
+
+/**
+ * Used to dump debug information.
+ */
+let Logger = {
+  /**
+   * Set up this variable to dump log messages into console.
+   */
+  dumpToConsole: false,
+
+  /**
+   * Set up this variable to dump log messages into error console.
+   */
+  dumpToAppConsole: false,
+
+  /**
+   * Return true if dump is enabled.
+   */
+  get enabled() {
+    return this.dumpToConsole || this.dumpToAppConsole;
+  },
+
+  /**
+   * Dump information into console if applicable.
+   */
+  log(msg) {
+    if (this.enabled) {
+      this.logToConsole(msg);
+      this.logToAppConsole(msg);
+    }
+  },
+
+  /**
+   * Log message to console.
+   */
+  logToConsole(msg) {
+    if (this.dumpToConsole) {
+      dump(`\n${msg}\n`);
+    }
+  },
+
+  /**
+   * Log message to error console.
+   */
+  logToAppConsole(msg) {
+    if (this.dumpToAppConsole) {
+      Services.console.logStringMessage(`${msg}`);
+    }
+  },
+};
+
+/**
+ * Asynchronously set or remove content element's attribute (in content process
+ * if e10s is enabled).
+ * @param  {Object}  browser  current "tabbrowser" element
+ * @param  {String}  id       content element id
+ * @param  {String}  attr     attribute name
+ * @param  {String?} value    optional attribute value, if not present, remove
+ *                            attribute
+ * @return {Promise}          promise indicating that attribute is set/removed
+ */
+function invokeSetAttribute(browser, id, attr, value) {
+  if (value) {
+    Logger.log(`Setting ${attr} attribute to ${value} for node with id: ${id}`);
+  } else {
+    Logger.log(`Removing ${attr} attribute from node with id: ${id}`);
+  }
+
+  return invokeContentTask(
+    browser,
+    [id, attr, value],
+    (contentId, contentAttr, contentValue) => {
+      let elm = content.document.getElementById(contentId);
+      if (contentValue) {
+        elm.setAttribute(contentAttr, contentValue);
+      } else {
+        elm.removeAttribute(contentAttr);
+      }
+    }
+  );
+}
+
+/**
+ * Asynchronously set or remove content element's style (in content process if
+ * e10s is enabled, or in fission process if fission is enabled and a fission
+ * frame is present).
+ * @param  {Object}  browser  current "tabbrowser" element
+ * @param  {String}  id       content element id
+ * @param  {String}  aStyle   style property name
+ * @param  {String?} aValue   optional style property value, if not present,
+ *                            remove style
+ * @return {Promise}          promise indicating that style is set/removed
+ */
+function invokeSetStyle(browser, id, style, value) {
+  if (value) {
+    Logger.log(`Setting ${style} style to ${value} for node with id: ${id}`);
+  } else {
+    Logger.log(`Removing ${style} style from node with id: ${id}`);
+  }
+
+  return invokeContentTask(
+    browser,
+    [id, style, value],
+    (contentId, contentStyle, contentValue) => {
+      const elm = content.document.getElementById(contentId);
+      if (contentValue) {
+        elm.style[contentStyle] = contentValue;
+      } else {
+        delete elm.style[contentStyle];
+      }
+    }
+  );
+}
+
+/**
+ * Asynchronously set focus on a content element (in content process if e10s is
+ * enabled, or in fission process if fission is enabled and a fission frame is
+ * present).
+ * @param  {Object}  browser  current "tabbrowser" element
+ * @param  {String}  id       content element id
+ * @return {Promise} promise  indicating that focus is set
+ */
+function invokeFocus(browser, id) {
+  Logger.log(`Setting focus on a node with id: ${id}`);
+
+  return invokeContentTask(browser, [id], contentId => {
+    const elm = content.document.getElementById(contentId);
+    if (elm.editor) {
+      elm.selectionStart = elm.selectionEnd = elm.value.length;
+    }
+
+    elm.focus();
+  });
+}
+
+/**
+ * Get DPR for a specific content window.
+ * @param  browser
+ *         Browser for which we want its content window's DPR reported.
+ *
+ * @return {Promise}
+ *         Promise with the value that resolves to the devicePixelRatio of the
+ *         content window of a given browser.
+ *
+ */
+function getContentDPR(browser) {
+  return invokeContentTask(browser, [], () => content.window.devicePixelRatio);
+}
+
+/**
+ * Asynchronously perform a task in content (in content process if e10s is
+ * enabled, or in fission process if fission is enabled and a fission frame is
+ * present).
+ * @param  {Object}    browser  current "tabbrowser" element
+ * @param  {Array}     args     arguments for the content task
+ * @param  {Function}  task     content task function
+ *
+ * @return {Promise} promise  indicating that content task is complete
+ */
+function invokeContentTask(browser, args, task) {
+  return SpecialPowers.spawn(
+    browser,
+    [DEFAULT_IFRAME_ID, task.toString(), ...args],
+    (iframeId, contentTask, ...contentArgs) => {
+      // eslint-disable-next-line no-eval
+      const runnableTask = eval(`
+      (() => {
+        return (${contentTask});
+      })();`);
+      const frame = content.document.getElementById(iframeId);
+
+      return frame
+        ? SpecialPowers.spawn(frame, contentArgs, runnableTask)
+        : runnableTask.call(this, ...contentArgs);
+    }
+  );
+}
+
+/**
+ * Compare process ID's between the top level content process and possible
+ * remote/local iframe proccess.
+ * @param {Object}  browser
+ *        Top level browser object for a tab.
+ * @param {Boolean} isRemote
+ *        Indicates if we expect the iframe content process to be remote or not.
+ */
+async function comparePIDs(browser, isRemote) {
+  function getProcessID() {
+    return Services.appinfo.processID;
+  }
+
+  const contentPID = await SpecialPowers.spawn(browser, [], getProcessID);
+  const iframePID = await invokeContentTask(browser, [], getProcessID);
+  is(
+    isRemote,
+    contentPID !== iframePID,
+    isRemote
+      ? "Remote IFRAME is in a different process."
+      : "IFRAME is in the same process."
+  );
+}
+
+/**
+ * Load a list of scripts into the test
+ * @param {Array} scripts  a list of scripts to load
+ */
+function loadScripts(...scripts) {
+  for (let script of scripts) {
+    let path =
+      typeof script === "string"
+        ? `${CURRENT_DIR}${script}`
+        : `${script.dir}${script.name}`;
+    Services.scriptloader.loadSubScript(path, this);
+  }
+}
+
+/**
+ * Load a list of scripts into target's content.
+ * @param {Object} target
+ *        target for loading scripts into
+ * @param {Array}  scripts
+ *        a list of scripts to load into content
+ */
+async function loadContentScripts(target, ...scripts) {
+  for (let { script, symbol } of scripts) {
+    let contentScript = `${CURRENT_DIR}${script}`;
+    let loadedScriptSet = LOADED_CONTENT_SCRIPTS.get(contentScript);
+    if (!loadedScriptSet) {
+      loadedScriptSet = new WeakSet();
+      LOADED_CONTENT_SCRIPTS.set(contentScript, loadedScriptSet);
+    } else if (loadedScriptSet.has(target)) {
+      continue;
+    }
+
+    await SpecialPowers.spawn(
+      target,
+      [contentScript, symbol],
+      async (_contentScript, importSymbol) => {
+        let module = ChromeUtils.importESModule(_contentScript);
+        content.window[importSymbol] = module[importSymbol];
+      }
+    );
+    loadedScriptSet.add(target);
+  }
+}
+
+function attrsToString(attrs) {
+  return Object.entries(attrs)
+    .map(([attr, value]) => `${attr}=${JSON.stringify(value)}`)
+    .join(" ");
+}
+
+function wrapWithIFrame(doc, options = {}) {
+  let src;
+  let { iframeAttrs = {}, iframeDocBodyAttrs = {} } = options;
+  iframeDocBodyAttrs = {
+    id: DEFAULT_IFRAME_DOC_BODY_ID,
+    ...iframeDocBodyAttrs,
+  };
+  if (options.remoteIframe) {
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    const srcURL = new URL(`http://example.net/document-builder.sjs`);
+    if (doc.endsWith("html")) {
+      srcURL.searchParams.append("file", `${CURRENT_FILE_DIR}${doc}`);
+    } else {
+      srcURL.searchParams.append(
+        "html",
+        `
+        
+          
+            
+            Accessibility Fission Test
+          
+          ${doc}
+        `
+      );
+    }
+    src = srcURL.href;
+  } else {
+    const mimeType = doc.endsWith("xhtml") ? XHTML_MIME_TYPE : HTML_MIME_TYPE;
+    if (doc.endsWith("html")) {
+      doc = loadHTMLFromFile(`${CURRENT_FILE_DIR}${doc}`);
+      doc = doc.replace(
+        //,
+        ``
+      );
+    } else {
+      doc = `
+      ${doc}`;
+    }
+
+    src = `data:${mimeType};charset=utf-8,${encodeURIComponent(doc)}`;
+  }
+
+  iframeAttrs = {
+    id: DEFAULT_IFRAME_ID,
+    src,
+    ...iframeAttrs,
+  };
+
+  return `
+  `,
+  runTest,
+  { iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test div containers are reported as onscreen, even if some of their contents are
+ * offscreen.
+ */
+addAccessibleTask(
+  `
+  
      on screen
      offscreen
      
+  `,
+  async function (browser, accDoc) {
+    const outer = findAccessibleChildByID(accDoc, "outer");
+    const inner = findAccessibleChildByID(accDoc, "inner");
+    const on = findAccessibleChildByID(accDoc, "on");
+    const off = findAccessibleChildByID(accDoc, "off");
+
+    await untilCacheOk(
+      () => testVisibility(outer, false, false),
+      "outer should be on screen and visible"
+    );
+    await untilCacheOk(
+      () => testVisibility(inner, false, false),
+      "inner should be on screen and visible"
+    );
+    await untilCacheOk(
+      () => testVisibility(on, false, false),
+      "on should be on screen and visible"
+    );
+    await untilCacheOk(
+      () => testVisibility(off, true, false),
+      "off should be off screen and visible"
+    );
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+// test dynamic translation
+addAccessibleTask(
+  `
      Hello
      `,
+  async function (browser, accDoc) {
+    const container = findAccessibleChildByID(accDoc, "container");
+    await untilCacheOk(
+      () => testVisibility(container, true, false),
+      "container should be off screen and visible"
+    );
+    await invokeContentTask(browser, [], () => {
+      let b = content.document.getElementById("b");
+      b.click();
+    });
+
+    await waitForContentPaint(browser);
+    await untilCacheOk(
+      () => testVisibility(container, false, false),
+      "container should be on screen and visible"
+    );
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/states/browser_test_visibility_2.js b/accessible/tests/browser/states/browser_test_visibility_2.js
new file mode 100644
index 0000000000..ead134069a
--- /dev/null
+++ b/accessible/tests/browser/states/browser_test_visibility_2.js
@@ -0,0 +1,131 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Test tables, table rows are reported on screen, even if some cells of a given row are
+ * offscreen.
+ */
+addAccessibleTask(
+  `
+  
      onetwothree
      
+  `,
+  async function (browser, accDoc) {
+    const table = findAccessibleChildByID(accDoc, "table");
+    const row = findAccessibleChildByID(accDoc, "row");
+    const one = findAccessibleChildByID(accDoc, "one");
+    const two = findAccessibleChildByID(accDoc, "two");
+    const three = findAccessibleChildByID(accDoc, "three");
+
+    await untilCacheOk(
+      () => testVisibility(table, false, false),
+      "table should be on screen and visible"
+    );
+    await untilCacheOk(
+      () => testVisibility(row, false, false),
+      "row should be on screen and visible"
+    );
+    await untilCacheOk(
+      () => testVisibility(one, false, false),
+      "one should be on screen and visible"
+    );
+    await untilCacheOk(
+      () => testVisibility(two, false, false),
+      "two should be on screen and visible"
+    );
+    await untilCacheOk(
+      () => testVisibility(three, true, false),
+      "three should be off screen and visible"
+    );
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test rows and cells outside of the viewport are reported as offscreen.
+ */
+addAccessibleTask(
+  `
+  
      one
      two
      
+  `,
+  async function (browser, accDoc) {
+    const table = findAccessibleChildByID(accDoc, "table");
+    const rowA = findAccessibleChildByID(accDoc, "rowA");
+    const one = findAccessibleChildByID(accDoc, "one");
+    const rowB = findAccessibleChildByID(accDoc, "rowB");
+    const two = findAccessibleChildByID(accDoc, "two");
+
+    await untilCacheOk(
+      () => testVisibility(table, false, false),
+      "table should be on screen and visible"
+    );
+    await untilCacheOk(
+      () => testVisibility(rowA, false, false),
+      "rowA should be on screen and visible"
+    );
+    await untilCacheOk(
+      () => testVisibility(one, false, false),
+      "one should be on screen and visible"
+    );
+    await untilCacheOk(
+      () => testVisibility(rowB, true, false),
+      "rowB should be off screen and visible"
+    );
+    await untilCacheOk(
+      () => testVisibility(two, true, false),
+      "two should be off screen and visible"
+    );
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+addAccessibleTask(
+  `
+  
      hello
      
+  `,
+  async function (browser, accDoc) {
+    let textLeaf = findAccessibleChildByID(accDoc, "div").firstChild;
+    await untilCacheOk(
+      () => testVisibility(textLeaf, false, false),
+      "text should be on screen and visible"
+    );
+    let p = waitForEvent(EVENT_TEXT_INSERTED, "div");
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("div").textContent = "goodbye";
+    });
+    await p;
+    textLeaf = findAccessibleChildByID(accDoc, "div").firstChild;
+    await untilCacheOk(
+      () => testVisibility(textLeaf, false, false),
+      "text should be on screen and visible"
+    );
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
+
+/**
+ * Overlapping, opaque divs with the same bounds should not be considered
+ * offscreen.
+ */
+addAccessibleTask(
+  `
+  
+  
      hi
      
+  `,
+  async function (browser, accDoc) {
+    const outer = findAccessibleChildByID(accDoc, "outer");
+    const inner = findAccessibleChildByID(accDoc, "inner");
+
+    await untilCacheOk(
+      () => testVisibility(outer, false, false),
+      "outer should be on screen and visible"
+    );
+    await untilCacheOk(
+      () => testVisibility(inner, false, false),
+      "inner should be on screen and visible"
+    );
+  },
+  { chrome: true, iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/states/head.js b/accessible/tests/browser/states/head.js
new file mode 100644
index 0000000000..10c616cb80
--- /dev/null
+++ b/accessible/tests/browser/states/head.js
@@ -0,0 +1,91 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* exported waitForIFrameA11yReady, waitForIFrameUpdates, spawnTestStates, testVisibility */
+
+// Load the shared-head file first.
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js",
+  this
+);
+
+// Loading and common.js from accessible/tests/mochitest/ for all tests, as
+// well as promisified-events.js.
+/* import-globals-from ../../mochitest/states.js */
+/* import-globals-from ../../mochitest/role.js */
+loadScripts(
+  { name: "common.js", dir: MOCHITESTS_DIR },
+  { name: "promisified-events.js", dir: MOCHITESTS_DIR },
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "states.js", dir: MOCHITESTS_DIR }
+);
+
+// This is another version of addA11yLoadEvent for fission.
+async function waitForIFrameA11yReady(iFrameBrowsingContext) {
+  await SimpleTest.promiseFocus(window);
+
+  await SpecialPowers.spawn(iFrameBrowsingContext, [], () => {
+    return new Promise(resolve => {
+      function waitForDocLoad() {
+        SpecialPowers.executeSoon(() => {
+          const acc = SpecialPowers.Cc[
+            "@mozilla.org/accessibilityService;1"
+          ].getService(SpecialPowers.Ci.nsIAccessibilityService);
+
+          const accDoc = acc.getAccessibleFor(content.document);
+          let state = {};
+          accDoc.getState(state, {});
+          if (state.value & SpecialPowers.Ci.nsIAccessibleStates.STATE_BUSY) {
+            SpecialPowers.executeSoon(waitForDocLoad);
+            return;
+          }
+          resolve();
+        }, 0);
+      }
+      waitForDocLoad();
+    });
+  });
+}
+
+// A utility function to make sure the information of scroll position or visible
+// area changes reach to out-of-process iframes.
+async function waitForIFrameUpdates() {
+  // Wait for two frames since the information is notified via asynchronous IPC
+  // calls.
+  await new Promise(resolve => requestAnimationFrame(resolve));
+  await new Promise(resolve => requestAnimationFrame(resolve));
+}
+
+// A utility function to test the state of |elementId| element in out-of-process
+// |browsingContext|.
+async function spawnTestStates(browsingContext, elementId, expectedStates) {
+  function testStates(id, expected, unexpected) {
+    const acc = SpecialPowers.Cc[
+      "@mozilla.org/accessibilityService;1"
+    ].getService(SpecialPowers.Ci.nsIAccessibilityService);
+    const target = content.document.getElementById(id);
+    let state = {};
+    acc.getAccessibleFor(target).getState(state, {});
+    if (expected === 0) {
+      Assert.equal(state.value, expected);
+    } else {
+      Assert.ok(state.value & expected);
+    }
+    Assert.ok(!(state.value & unexpected));
+  }
+  await SpecialPowers.spawn(
+    browsingContext,
+    [elementId, expectedStates],
+    testStates
+  );
+}
+
+function testVisibility(acc, shouldBeOffscreen, shouldBeInvisible) {
+  const [states] = getStates(acc);
+  let looksGood = shouldBeOffscreen == ((states & STATE_OFFSCREEN) != 0);
+  looksGood &= shouldBeInvisible == ((states & STATE_INVISIBLE) != 0);
+  return looksGood;
+}
diff --git a/accessible/tests/browser/telemetry/browser.ini b/accessible/tests/browser/telemetry/browser.ini
new file mode 100644
index 0000000000..07e44a348d
--- /dev/null
+++ b/accessible/tests/browser/telemetry/browser.ini
@@ -0,0 +1,8 @@
+[DEFAULT]
+subsuite = a11y
+prefs =
+  javascript.options.asyncstack_capture_debuggee_only=false
+
+[browser_HCM_telemetry.js]
+support-files =
+  !/browser/components/preferences/tests/head.js
diff --git a/accessible/tests/browser/telemetry/browser_HCM_telemetry.js b/accessible/tests/browser/telemetry/browser_HCM_telemetry.js
new file mode 100644
index 0000000000..23600d51c4
--- /dev/null
+++ b/accessible/tests/browser/telemetry/browser_HCM_telemetry.js
@@ -0,0 +1,365 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/browser/components/preferences/tests/head.js",
+  this
+);
+
+const { TelemetryTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/TelemetryTestUtils.sys.mjs"
+);
+
+registerCleanupFunction(() => {
+  reset();
+});
+
+function reset() {
+  // This (manually) runs after every task in this test suite.
+  // We have to add this in because the initial state of
+  // `document_color_use` affects the initial state of
+  // `foreground_color`/`background_color` which can change our
+  // starting telem samples. This ensures each tasks makes no lasting
+  // state changes.
+  Services.prefs.clearUserPref("browser.display.document_color_use");
+  Services.prefs.clearUserPref("browser.display.permit_backplate");
+  Services.prefs.clearUserPref("browser.display.use_system_colors");
+  Services.telemetry.clearEvents();
+  TelemetryTestUtils.assertNumberOfEvents(0);
+  Services.prefs.clearUserPref("browser.display.foreground_color");
+  Services.prefs.clearUserPref("browser.display.background_color");
+}
+
+async function openColorsDialog() {
+  await openPreferencesViaOpenPreferencesAPI("general", { leaveOpen: true });
+  const colorsButton =
+    gBrowser.selectedBrowser.contentDocument.getElementById("colors");
+
+  const dialogOpened = promiseLoadSubDialog(
+    "chrome://browser/content/preferences/dialogs/colors.xhtml"
+  );
+  colorsButton.doCommand();
+
+  return dialogOpened;
+}
+
+async function closeColorsDialog(dialogWin) {
+  const dialogClosed = BrowserTestUtils.waitForEvent(dialogWin, "unload");
+  const button = dialogWin.document
+    .getElementById("ColorsDialog")
+    .getButton("accept");
+  button.focus();
+  button.doCommand();
+  return dialogClosed;
+}
+
+function verifyBackplate(expectedValue) {
+  TelemetryTestUtils.assertScalar(
+    TelemetryTestUtils.getProcessScalars("parent", false, true),
+    "a11y.backplate",
+    expectedValue,
+    "Backplate scalar is logged as " + expectedValue
+  );
+}
+
+function verifyUseSystemColors(expectedValue) {
+  const snapshot = TelemetryTestUtils.getProcessScalars("parent", false, false);
+  ok("a11y.use_system_colors" in snapshot, "System color usage was logged.");
+  TelemetryTestUtils.assertScalar(
+    snapshot,
+    "a11y.use_system_colors",
+    expectedValue,
+    "System colors scalar is logged as " + expectedValue
+  );
+}
+
+// The magic numbers below are the uint32_t values representing RGB white
+// and RGB black respectively. They're directly captured as nsColors and
+// follow the same bit-shift pattern.
+function testIsWhite(pref, snapshot) {
+  ok(pref in snapshot, "Scalar must be present.");
+  is(snapshot[pref], 4294967295, "Scalar is logged as white");
+}
+
+function testIsBlack(pref, snapshot) {
+  ok(pref in snapshot, "Scalar must be present.");
+  is(snapshot[pref], 4278190080, "Scalar is logged as black");
+}
+
+async function setForegroundColor(color) {
+  // Note: we set the foreground and background colors by modifying this pref
+  // instead of setting the value attribute on the color input direclty.
+  // This is because setting the value of the input with setAttribute
+  // doesn't generate the correct event to save the new value to the prefs
+  // store, so we have to do it ourselves.
+  Services.prefs.setStringPref("browser.display.foreground_color", color);
+}
+
+async function setBackgroundColor(color) {
+  Services.prefs.setStringPref("browser.display.background_color", color);
+}
+
+add_task(async function testInit() {
+  const dialogWin = await openColorsDialog();
+  const menulistHCM = dialogWin.document.getElementById("useDocumentColors");
+  if (AppConstants.platform == "win") {
+    is(
+      Services.prefs.getBoolPref("browser.display.use_system_colors"),
+      true,
+      "Use system colours pref is init'd correctly"
+    );
+    verifyUseSystemColors(true);
+
+    is(
+      menulistHCM.value,
+      "0",
+      "HCM menulist should be set to only with HCM theme on startup for windows"
+    );
+
+    // Verify correct default value
+    TelemetryTestUtils.assertKeyedScalar(
+      TelemetryTestUtils.getProcessScalars("parent", true, true),
+      "a11y.theme",
+      "default",
+      false
+    );
+  } else {
+    is(
+      Services.prefs.getBoolPref("browser.display.use_system_colors"),
+      false,
+      "Use system colours pref is init'd correctly"
+    );
+    verifyUseSystemColors(false);
+
+    is(
+      menulistHCM.value,
+      "1",
+      "HCM menulist should be set to never on startup for non-windows platforms"
+    );
+
+    // Verify correct default value
+    TelemetryTestUtils.assertKeyedScalar(
+      TelemetryTestUtils.getProcessScalars("parent", true, true),
+      "a11y.theme",
+      "always",
+      false
+    );
+
+    await closeColorsDialog(dialogWin);
+
+    // We should not have logged any colors
+    let snapshot = TelemetryTestUtils.getProcessScalars("parent", false, true);
+    ok(
+      !("a11y.HCM_foreground" in snapshot),
+      "Foreground color shouldn't be present."
+    );
+    ok(
+      !("a11y.HCM_background" in snapshot),
+      "Background color shouldn't be present."
+    );
+
+    // If we change the colors, our probes should not be updated
+    await setForegroundColor("#ffffff"); // white
+    await setBackgroundColor("#000000"); // black
+
+    snapshot = TelemetryTestUtils.getProcessScalars("parent", false, true);
+    ok(
+      !("a11y.HCM_foreground" in snapshot),
+      "Foreground color shouldn't be present."
+    );
+    ok(
+      !("a11y.HCM_background" in snapshot),
+      "Background color shouldn't be present."
+    );
+  }
+
+  reset();
+  gBrowser.removeCurrentTab();
+});
+
+add_task(async function testSetAlways() {
+  const dialogWin = await openColorsDialog();
+  const menulistHCM = dialogWin.document.getElementById("useDocumentColors");
+
+  menulistHCM.doCommand();
+  const newOption = dialogWin.document.getElementById("documentColorAlways");
+  newOption.click();
+
+  is(menulistHCM.value, "2", "HCM menulist should be set to always");
+
+  await closeColorsDialog(dialogWin);
+
+  // Verify correct initial value
+  let snapshot = TelemetryTestUtils.getProcessScalars("parent", true, true);
+  TelemetryTestUtils.assertKeyedScalar(snapshot, "a11y.theme", "never", false);
+
+  snapshot = TelemetryTestUtils.getProcessScalars("parent", false, true);
+  // We should have logged the default foreground and background colors
+  testIsWhite("a11y.HCM_background", snapshot);
+  testIsBlack("a11y.HCM_foreground", snapshot);
+
+  // If we change the colors, our probes update on non-windows platforms.
+  // On windows, useSystemColors is on by default, and so the values we set here
+  // will not be written to our telemetry probes, because they capture
+  // used colors, not the values of browser.foreground/background_color directly.
+
+  setBackgroundColor("#000000");
+  snapshot = TelemetryTestUtils.getProcessScalars("parent", false, true);
+  if (AppConstants.platform == "win") {
+    testIsWhite("a11y.HCM_background", snapshot);
+  } else {
+    testIsBlack("a11y.HCM_background", snapshot);
+  }
+
+  setForegroundColor("#ffffff");
+  snapshot = TelemetryTestUtils.getProcessScalars("parent", false, true);
+  if (AppConstants.platform == "win") {
+    testIsBlack("a11y.HCM_foreground", snapshot);
+  } else {
+    testIsWhite("a11y.HCM_foreground", snapshot);
+  }
+
+  reset();
+  gBrowser.removeCurrentTab();
+});
+
+add_task(async function testSetDefault() {
+  const dialogWin = await openColorsDialog();
+  const menulistHCM = dialogWin.document.getElementById("useDocumentColors");
+
+  menulistHCM.doCommand();
+  const newOption = dialogWin.document.getElementById("documentColorAutomatic");
+  newOption.click();
+
+  is(menulistHCM.value, "0", "HCM menulist should be set to default");
+
+  await closeColorsDialog(dialogWin);
+
+  // Verify correct initial value
+  TelemetryTestUtils.assertKeyedScalar(
+    TelemetryTestUtils.getProcessScalars("parent", true, true),
+    "a11y.theme",
+    "default",
+    false
+  );
+
+  // We should not have logged any colors
+  let snapshot = TelemetryTestUtils.getProcessScalars("parent", false, true);
+  ok(
+    !("a11y.HCM_foreground" in snapshot),
+    "Foreground color shouldn't be present."
+  );
+  ok(
+    !("a11y.HCM_background" in snapshot),
+    "Background color shouldn't be present."
+  );
+
+  // If we change the colors, our probes should not be updated anywhere
+  await setForegroundColor("#ffffff"); // white
+  await setBackgroundColor("#000000"); // black
+
+  snapshot = TelemetryTestUtils.getProcessScalars("parent", false, true);
+  ok(
+    !("a11y.HCM_foreground" in snapshot),
+    "Foreground color shouldn't be present."
+  );
+  ok(
+    !("a11y.HCM_background" in snapshot),
+    "Background color shouldn't be present."
+  );
+
+  reset();
+  gBrowser.removeCurrentTab();
+});
+
+add_task(async function testSetNever() {
+  const dialogWin = await openColorsDialog();
+  const menulistHCM = dialogWin.document.getElementById("useDocumentColors");
+
+  menulistHCM.doCommand();
+  const newOption = dialogWin.document.getElementById("documentColorNever");
+  newOption.click();
+
+  is(menulistHCM.value, "1", "HCM menulist should be set to never");
+
+  await closeColorsDialog(dialogWin);
+
+  // Verify correct initial value
+  TelemetryTestUtils.assertKeyedScalar(
+    TelemetryTestUtils.getProcessScalars("parent", true, true),
+    "a11y.theme",
+    "always",
+    false
+  );
+
+  // We should not have logged any colors
+  let snapshot = TelemetryTestUtils.getProcessScalars("parent", false, true);
+  ok(
+    !("a11y.HCM_foreground" in snapshot),
+    "Foreground color shouldn't be present."
+  );
+  ok(
+    !("a11y.HCM_background" in snapshot),
+    "Background color shouldn't be present."
+  );
+
+  // If we change the colors, our probes should not be updated anywhere
+  await setForegroundColor("#ffffff"); // white
+  await setBackgroundColor("#000000"); // black
+
+  snapshot = TelemetryTestUtils.getProcessScalars("parent", false, true);
+  ok(
+    !("a11y.HCM_foreground" in snapshot),
+    "Foreground color shouldn't be present."
+  );
+  ok(
+    !("a11y.HCM_background" in snapshot),
+    "Background color shouldn't be present."
+  );
+
+  reset();
+  gBrowser.removeCurrentTab();
+});
+
+add_task(async function testBackplate() {
+  is(
+    Services.prefs.getBoolPref("browser.display.permit_backplate"),
+    true,
+    "Backplate is init'd to true"
+  );
+
+  Services.prefs.setBoolPref("browser.display.permit_backplate", false);
+  // Verify correct recorded value
+  verifyBackplate(false);
+
+  Services.prefs.setBoolPref("browser.display.permit_backplate", true);
+  // Verify correct recorded value
+  verifyBackplate(true);
+});
+
+add_task(async function testSystemColors() {
+  let expectedInitVal = false;
+  if (AppConstants.platform == "win") {
+    expectedInitVal = true;
+  }
+
+  const dialogWin = await openColorsDialog();
+  const checkbox = dialogWin.document.getElementById("browserUseSystemColors");
+  checkbox.click();
+
+  is(
+    checkbox.checked,
+    !expectedInitVal,
+    "System colors checkbox should be modified"
+  );
+
+  await closeColorsDialog(dialogWin);
+
+  verifyUseSystemColors(!expectedInitVal);
+
+  reset();
+  gBrowser.removeCurrentTab();
+});
diff --git a/accessible/tests/browser/text/browser.ini b/accessible/tests/browser/text/browser.ini
new file mode 100644
index 0000000000..1b0c5a3033
--- /dev/null
+++ b/accessible/tests/browser/text/browser.ini
@@ -0,0 +1,18 @@
+[DEFAULT]
+subsuite = a11y
+support-files =
+  head.js
+  !/accessible/tests/browser/shared-head.js
+  !/accessible/tests/browser/*.jsm
+  !/accessible/tests/mochitest/*.js
+prefs =
+  javascript.options.asyncstack_capture_debuggee_only=false
+
+[browser_editabletext.js]
+[browser_text.js]
+[browser_text_caret.js]
+[browser_text_paragraph_boundary.js]
+[browser_text_selection.js]
+[browser_text_spelling.js]
+skip-if = true # Bug 1800400
+[browser_textleafpoint.js]
diff --git a/accessible/tests/browser/text/browser_editabletext.js b/accessible/tests/browser/text/browser_editabletext.js
new file mode 100644
index 0000000000..0310122deb
--- /dev/null
+++ b/accessible/tests/browser/text/browser_editabletext.js
@@ -0,0 +1,173 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+async function testEditable(browser, acc, aBefore = "", aAfter = "") {
+  async function resetInput() {
+    if (acc.childCount <= 1) {
+      return;
+    }
+
+    let emptyInputEvent = waitForEvent(EVENT_TEXT_VALUE_CHANGE, "input");
+    await invokeContentTask(browser, [], async () => {
+      content.document.getElementById("input").innerHTML = "";
+    });
+
+    await emptyInputEvent;
+  }
+
+  // ////////////////////////////////////////////////////////////////////////
+  // insertText
+  await testInsertText(acc, "hello", 0, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "hello", aAfter]);
+  await testInsertText(acc, "ma ", 0, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "ma hello", aAfter]);
+  await testInsertText(acc, "ma", 2, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "mama hello", aAfter]);
+  await testInsertText(acc, " hello", 10, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [
+    aBefore,
+    "mama hello hello",
+    aAfter,
+  ]);
+
+  // ////////////////////////////////////////////////////////////////////////
+  // deleteText
+  await testDeleteText(acc, 0, 5, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "hello hello", aAfter]);
+  await testDeleteText(acc, 5, 6, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "hellohello", aAfter]);
+  await testDeleteText(acc, 5, 10, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "hello", aAfter]);
+  await testDeleteText(acc, 0, 5, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "", aAfter]);
+
+  // XXX: clipboard operation tests don't work well with editable documents.
+  if (acc.role == ROLE_DOCUMENT) {
+    return;
+  }
+
+  await resetInput();
+
+  // copyText and pasteText
+  await testInsertText(acc, "hello", 0, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "hello", aAfter]);
+
+  await testCopyText(acc, 0, 1, aBefore.length, browser, "h");
+  await testPasteText(acc, 1, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "hhello", aAfter]);
+
+  await testCopyText(acc, 5, 6, aBefore.length, browser, "o");
+  await testPasteText(acc, 6, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "hhelloo", aAfter]);
+
+  await testCopyText(acc, 2, 3, aBefore.length, browser, "e");
+  await testPasteText(acc, 1, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "hehelloo", aAfter]);
+
+  // cut & paste
+  await testCutText(acc, 0, 1, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "ehelloo", aAfter]);
+  await testPasteText(acc, 2, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "ehhelloo", aAfter]);
+
+  await testCutText(acc, 3, 4, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "ehhlloo", aAfter]);
+  await testPasteText(acc, 6, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "ehhlloeo", aAfter]);
+
+  await testCutText(acc, 0, 8, aBefore.length);
+  await isFinalValueCorrect(browser, acc, [aBefore, "", aAfter]);
+
+  await resetInput();
+
+  // ////////////////////////////////////////////////////////////////////////
+  // setTextContents
+  await testSetTextContents(acc, "hello", aBefore.length, [
+    EVENT_TEXT_INSERTED,
+  ]);
+  await isFinalValueCorrect(browser, acc, [aBefore, "hello", aAfter]);
+  await testSetTextContents(acc, "katze", aBefore.length, [
+    EVENT_TEXT_REMOVED,
+    EVENT_TEXT_INSERTED,
+  ]);
+  await isFinalValueCorrect(browser, acc, [aBefore, "katze", aAfter]);
+}
+
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    await testEditable(browser, findAccessibleChildByID(docAcc, "input"));
+  },
+  { chrome: true, topLevel: true }
+);
+
+addAccessibleTask(
+  `
+
      `,
+  async function (browser, docAcc) {
+    await testEditable(
+      browser,
+      findAccessibleChildByID(docAcc, "input"),
+      "",
+      "pseudo element"
+    );
+  },
+  { chrome: true, topLevel: false /* bug 1834129 */ }
+);
+
+addAccessibleTask(
+  `
+
      `,
+  async function (browser, docAcc) {
+    await testEditable(
+      browser,
+      findAccessibleChildByID(docAcc, "input"),
+      "pseudo element"
+    );
+  },
+  { chrome: true, topLevel: false /* bug 1834129 */ }
+);
+
+addAccessibleTask(
+  `
+
      `,
+  async function (browser, docAcc) {
+    await testEditable(
+      browser,
+      findAccessibleChildByID(docAcc, "input"),
+      "before",
+      "after"
+    );
+  },
+  { chrome: true, topLevel: false /* bug 1834129 */ }
+);
+
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    await testEditable(browser, docAcc);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    contentDocBodyAttrs: { contentEditable: "true" },
+  }
+);
diff --git a/accessible/tests/browser/text/browser_text.js b/accessible/tests/browser/text/browser_text.js
new file mode 100644
index 0000000000..79909ee412
--- /dev/null
+++ b/accessible/tests/browser/text/browser_text.js
@@ -0,0 +1,326 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/attributes.js */
+/* import-globals-from ../../mochitest/text.js */
+loadScripts({ name: "attributes.js", dir: MOCHITESTS_DIR });
+
+/**
+ * Test line and word offsets for various cases for both local and remote
+ * Accessibles. There is more extensive coverage in ../../mochitest/text. These
+ * tests don't need to duplicate all of that, since much of the underlying code
+ * is unified. They should ensure that the cache works as expected and that
+ * there is consistency between local and remote.
+ */
+addAccessibleTask(
+  `
+
      ab cd
      ef gh
      
+
      ab cd
+ef gh
      
+
      abc
      
+
      ab
      c      d
      
+
      a
      b
      
+
      abc
      
+  `,
+  async function (browser, docAcc) {
+    for (const id of ["br", "pre"]) {
+      const acc = findAccessibleChildByID(docAcc, id);
+      testCharacterCount([acc], 11);
+      testTextAtOffset(acc, BOUNDARY_LINE_START, [
+        [0, 5, "ab cd\n", 0, 6],
+        [6, 11, "ef gh", 6, 11],
+      ]);
+      testTextBeforeOffset(acc, BOUNDARY_LINE_START, [
+        [0, 5, "", 0, 0],
+        [6, 11, "ab cd\n", 0, 6],
+      ]);
+      testTextAfterOffset(acc, BOUNDARY_LINE_START, [
+        [0, 5, "ef gh", 6, 11],
+        [6, 11, "", 11, 11],
+      ]);
+      testTextAtOffset(acc, BOUNDARY_LINE_END, [
+        [0, 5, "ab cd", 0, 5],
+        [6, 11, "\nef gh", 5, 11],
+      ]);
+      testTextBeforeOffset(acc, BOUNDARY_LINE_END, [
+        [0, 5, "", 0, 0],
+        [6, 11, "ab cd", 0, 5],
+      ]);
+      testTextAfterOffset(acc, BOUNDARY_LINE_END, [
+        [0, 5, "\nef gh", 5, 11],
+        [6, 11, "", 11, 11],
+      ]);
+      testTextAtOffset(acc, BOUNDARY_WORD_START, [
+        [0, 2, "ab ", 0, 3],
+        [3, 5, "cd\n", 3, 6],
+        [6, 8, "ef ", 6, 9],
+        [9, 11, "gh", 9, 11],
+      ]);
+      testTextBeforeOffset(acc, BOUNDARY_WORD_START, [
+        [0, 2, "", 0, 0],
+        [3, 5, "ab ", 0, 3],
+        [6, 8, "cd\n", 3, 6],
+        [9, 11, "ef ", 6, 9],
+      ]);
+      testTextAfterOffset(acc, BOUNDARY_WORD_START, [
+        [0, 2, "cd\n", 3, 6],
+        [3, 5, "ef ", 6, 9],
+        [6, 8, "gh", 9, 11],
+        [9, 11, "", 11, 11],
+      ]);
+      testTextAtOffset(acc, BOUNDARY_WORD_END, [
+        [0, 1, "ab", 0, 2],
+        [2, 4, " cd", 2, 5],
+        [5, 7, "\nef", 5, 8],
+        [8, 11, " gh", 8, 11],
+      ]);
+      testTextBeforeOffset(acc, BOUNDARY_WORD_END, [
+        [0, 2, "", 0, 0],
+        [3, 5, "ab", 0, 2],
+        // See below for offset 6.
+        [7, 8, " cd", 2, 5],
+        [9, 11, "\nef", 5, 8],
+      ]);
+      testTextBeforeOffset(acc, BOUNDARY_WORD_END, [[6, 6, " cd", 2, 5]]);
+      testTextAfterOffset(acc, BOUNDARY_WORD_END, [
+        [0, 2, " cd", 2, 5],
+        [3, 5, "\nef", 5, 8],
+        [6, 8, " gh", 8, 11],
+        [9, 11, "", 11, 11],
+      ]);
+      testTextAtOffset(acc, BOUNDARY_PARAGRAPH, [
+        [0, 5, "ab cd\n", 0, 6],
+        [6, 11, "ef gh", 6, 11],
+      ]);
+    }
+    const linksStartEnd = findAccessibleChildByID(docAcc, "linksStartEnd");
+    testTextAtOffset(linksStartEnd, BOUNDARY_LINE_START, [
+      [0, 3, `${kEmbedChar}b${kEmbedChar}`, 0, 3],
+    ]);
+    testTextAtOffset(linksStartEnd, BOUNDARY_WORD_START, [
+      [0, 3, `${kEmbedChar}b${kEmbedChar}`, 0, 3],
+    ]);
+    const linksBreaking = findAccessibleChildByID(docAcc, "linksBreaking");
+    testTextAtOffset(linksBreaking, BOUNDARY_LINE_START, [
+      [0, 0, `a${kEmbedChar}`, 0, 2],
+      [1, 1, `a${kEmbedChar}d`, 0, 3],
+      [2, 3, `${kEmbedChar}d`, 1, 3],
+    ]);
+    const p = findAccessibleChildByID(docAcc, "p");
+    testTextAtOffset(p, BOUNDARY_LINE_START, [
+      [0, 0, "a", 0, 1],
+      [1, 2, "b", 1, 2],
+    ]);
+    testTextAtOffset(p, BOUNDARY_PARAGRAPH, [[0, 2, "ab", 0, 2]]);
+    const leafThenWrap = findAccessibleChildByID(docAcc, "leafThenWrap");
+    testTextAtOffset(leafThenWrap, BOUNDARY_LINE_START, [
+      [0, 1, "ab", 0, 2],
+      [2, 3, "c", 2, 3],
+    ]);
+  },
+  { chrome: true, topLevel: true, iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test line offsets after text mutation.
+ */
+addAccessibleTask(
+  `
+

      
+
      acdef
      
+  `,
+  async function (browser, docAcc) {
+    const initBr = findAccessibleChildByID(docAcc, "initBr");
+    testTextAtOffset(initBr, BOUNDARY_LINE_START, [
+      [0, 0, "\n", 0, 1],
+      [1, 1, "", 1, 1],
+    ]);
+    info("initBr: Inserting text before br");
+    let reordered = waitForEvent(EVENT_REORDER, initBr);
+    await invokeContentTask(browser, [], () => {
+      const initBrNode = content.document.getElementById("initBr");
+      initBrNode.insertBefore(
+        content.document.createTextNode("a"),
+        initBrNode.firstElementChild
+      );
+    });
+    await reordered;
+    testTextAtOffset(initBr, BOUNDARY_LINE_START, [
+      [0, 1, "a\n", 0, 2],
+      [2, 2, "", 2, 2],
+    ]);
+
+    const rewrap = findAccessibleChildByID(docAcc, "rewrap");
+    testTextAtOffset(rewrap, BOUNDARY_LINE_START, [
+      [0, 1, "ac", 0, 2],
+      [2, 3, "de", 2, 4],
+      [4, 5, "f", 4, 5],
+    ]);
+    info("rewrap: Changing ac to abc");
+    reordered = waitForEvent(EVENT_REORDER, rewrap);
+    await invokeContentTask(browser, [], () => {
+      const rewrap1 = content.document.getElementById("rewrap1");
+      rewrap1.textContent = "abc";
+    });
+    await reordered;
+    testTextAtOffset(rewrap, BOUNDARY_LINE_START, [
+      [0, 1, "ab", 0, 2],
+      [2, 3, "cd", 2, 4],
+      [4, 6, "ef", 4, 6],
+    ]);
+  },
+  { chrome: true, topLevel: true, iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test retrieval of text offsets when an invalid offset is given.
+ */
+addAccessibleTask(
+  `
      test
      `,
+  async function (browser, docAcc) {
+    const p = findAccessibleChildByID(docAcc, "p");
+    testTextAtOffset(p, BOUNDARY_LINE_START, [[5, 5, "", 0, 0]]);
+    testTextBeforeOffset(p, BOUNDARY_LINE_START, [[5, 5, "", 0, 0]]);
+    testTextAfterOffset(p, BOUNDARY_LINE_START, [[5, 5, "", 0, 0]]);
+  },
+  {
+    // The old HyperTextAccessible implementation doesn't crash, but it returns
+    // different offsets. This doesn't matter because they're invalid either
+    // way. Since the new HyperTextAccessibleBase implementation is all we will
+    // have soon, just test that.
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+/**
+ * Test HyperText embedded object methods.
+ */
+addAccessibleTask(
+  `
      abc
      `,
+  async function (browser, docAcc) {
+    const container = findAccessibleChildByID(docAcc, "container", [
+      nsIAccessibleHyperText,
+    ]);
+    is(container.linkCount, 1, "container linkCount is 1");
+    let link = container.getLinkAt(0);
+    queryInterfaces(link, [nsIAccessible, nsIAccessibleHyperText]);
+    is(getAccessibleDOMNodeID(link), "link", "LinkAt 0 is the link");
+    is(container.getLinkIndex(link), 0, "getLinkIndex for link is 0");
+    is(link.startIndex, 1, "link's startIndex is 1");
+    is(link.endIndex, 2, "link's endIndex is 2");
+    is(container.getLinkIndexAtOffset(1), 0, "getLinkIndexAtOffset(1) is 0");
+    is(container.getLinkIndexAtOffset(0), -1, "getLinkIndexAtOffset(0) is -1");
+    is(link.linkCount, 0, "link linkCount is 0");
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+/**
+ * Test HyperText embedded object methods near a list bullet.
+ */
+addAccessibleTask(
+  ``,
+  async function (browser, docAcc) {
+    const li = findAccessibleChildByID(docAcc, "li", [nsIAccessibleHyperText]);
+    let link = li.getLinkAt(0);
+    queryInterfaces(link, [nsIAccessible]);
+    is(getAccessibleDOMNodeID(link), "link", "LinkAt 0 is the link");
+    is(li.getLinkIndex(link), 0, "getLinkIndex for link is 0");
+    is(link.startIndex, 2, "link's startIndex is 2");
+    is(li.getLinkIndexAtOffset(2), 0, "getLinkIndexAtOffset(2) is 0");
+    is(li.getLinkIndexAtOffset(0), -1, "getLinkIndexAtOffset(0) is -1");
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+const boldAttrs = { "font-weight": "700" };
+
+/**
+ * Test text attribute methods.
+ */
+addAccessibleTask(
+  `
+
      ab
      
+
      ab
      
+
      abcdef
      
+
      abcdefgh
      
+
      abcdefghij
      
+
      
+
      abcdefgh
      
+  `,
+  async function (browser, docAcc) {
+    let defAttrs = {
+      "text-position": "baseline",
+      "font-style": "normal",
+      "font-weight": "400",
+    };
+
+    const plain = findAccessibleChildByID(docAcc, "plain");
+    testDefaultTextAttrs(plain, defAttrs, true);
+    for (let offset = 0; offset <= 2; ++offset) {
+      testTextAttrs(plain, offset, {}, defAttrs, 0, 2, true);
+    }
+
+    const bold = findAccessibleChildByID(docAcc, "bold");
+    defAttrs["font-weight"] = "700";
+    testDefaultTextAttrs(bold, defAttrs, true);
+    testTextAttrs(bold, 0, {}, defAttrs, 0, 2, true);
+
+    const partialBold = findAccessibleChildByID(docAcc, "partialBold");
+    defAttrs["font-weight"] = "400";
+    testDefaultTextAttrs(partialBold, defAttrs, true);
+    testTextAttrs(partialBold, 0, {}, defAttrs, 0, 2, true);
+    testTextAttrs(partialBold, 2, boldAttrs, defAttrs, 2, 4, true);
+    testTextAttrs(partialBold, 4, {}, defAttrs, 4, 6, true);
+
+    const consecutiveBold = findAccessibleChildByID(docAcc, "consecutiveBold");
+    testDefaultTextAttrs(consecutiveBold, defAttrs, true);
+    testTextAttrs(consecutiveBold, 0, {}, defAttrs, 0, 2, true);
+    testTextAttrs(consecutiveBold, 2, boldAttrs, defAttrs, 2, 6, true);
+    testTextAttrs(consecutiveBold, 6, {}, defAttrs, 6, 8, true);
+
+    const embeddedObjs = findAccessibleChildByID(docAcc, "embeddedObjs");
+    testDefaultTextAttrs(embeddedObjs, defAttrs, true);
+    testTextAttrs(embeddedObjs, 0, {}, defAttrs, 0, 2, true);
+    for (let offset = 2; offset <= 4; ++offset) {
+      // attrs and defAttrs should be completely empty, so we pass
+      // false for aSkipUnexpectedAttrs.
+      testTextAttrs(embeddedObjs, offset, {}, {}, 2, 5, false);
+    }
+    testTextAttrs(embeddedObjs, 5, {}, defAttrs, 5, 7, true);
+
+    const empty = findAccessibleChildByID(docAcc, "empty");
+    testDefaultTextAttrs(empty, defAttrs, true);
+    testTextAttrs(empty, 0, {}, defAttrs, 0, 0, true);
+
+    const fontFamilies = findAccessibleChildByID(docAcc, "fontFamilies", [
+      nsIAccessibleHyperText,
+    ]);
+    testDefaultTextAttrs(fontFamilies, defAttrs, true);
+    testTextAttrs(fontFamilies, 0, {}, defAttrs, 0, 2, true);
+    testTextAttrs(fontFamilies, 2, {}, defAttrs, 2, 6, true);
+    testTextAttrs(fontFamilies, 6, {}, defAttrs, 6, 8, true);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
diff --git a/accessible/tests/browser/text/browser_text_caret.js b/accessible/tests/browser/text/browser_text_caret.js
new file mode 100644
index 0000000000..e0cea334d6
--- /dev/null
+++ b/accessible/tests/browser/text/browser_text_caret.js
@@ -0,0 +1,452 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/text.js */
+
+/**
+ * Test caret retrieval.
+ */
+addAccessibleTask(
+  `
+
+
+  `,
+  async function (browser, docAcc) {
+    const textarea = findAccessibleChildByID(docAcc, "textarea", [
+      nsIAccessibleText,
+    ]);
+    let caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    textarea.takeFocus();
+    let evt = await caretMoved;
+    is(textarea.caretOffset, 0, "Initial caret offset is 0");
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_CHAR,
+      "a",
+      0,
+      1,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_WORD_START,
+      "ab ",
+      0,
+      3,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_LINE_START,
+      "ab cd ",
+      0,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    evt = await caretMoved;
+    is(textarea.caretOffset, 1, "Caret offset is 1 after ArrowRight");
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_CHAR,
+      "b",
+      1,
+      2,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_WORD_START,
+      "ab ",
+      0,
+      3,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_LINE_START,
+      "ab cd ",
+      0,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    evt = await caretMoved;
+    is(textarea.caretOffset, 2, "Caret offset is 2 after ArrowRight");
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_CHAR,
+      " ",
+      2,
+      3,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_WORD_START,
+      "ab ",
+      0,
+      3,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_LINE_START,
+      "ab cd ",
+      0,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    evt = await caretMoved;
+    is(textarea.caretOffset, 3, "Caret offset is 3 after ArrowRight");
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_CHAR,
+      "c",
+      3,
+      4,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_WORD_START,
+      "cd ",
+      3,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_LINE_START,
+      "ab cd ",
+      0,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    evt = await caretMoved;
+    is(textarea.caretOffset, 4, "Caret offset is 4 after ArrowRight");
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_CHAR,
+      "d",
+      4,
+      5,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_WORD_START,
+      "cd ",
+      3,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_LINE_START,
+      "ab cd ",
+      0,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    evt = await caretMoved;
+    is(textarea.caretOffset, 5, "Caret offset is 5 after ArrowRight");
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_CHAR,
+      " ",
+      5,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_WORD_START,
+      "cd ",
+      3,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_LINE_START,
+      "ab cd ",
+      0,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    evt = await caretMoved;
+    is(textarea.caretOffset, 6, "Caret offset is 6 after ArrowRight");
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(evt.isAtEndOfLine, "Caret is at end of line");
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_CHAR,
+      "",
+      6,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_WORD_START,
+      "cd ",
+      3,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_LINE_START,
+      "ab cd ",
+      0,
+      6,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    evt = await caretMoved;
+    is(textarea.caretOffset, 6, "Caret offset remains 6 after ArrowRight");
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    // Caret is at start of second line.
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_CHAR,
+      "e",
+      6,
+      7,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_WORD_START,
+      "e",
+      6,
+      7,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_LINE_START,
+      "e",
+      6,
+      7,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    evt = await caretMoved;
+    is(textarea.caretOffset, 7, "Caret offset is 7 after ArrowRight");
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(evt.isAtEndOfLine, "Caret is at end of line");
+    // Caret is at end of textarea.
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_CHAR,
+      "",
+      7,
+      7,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_WORD_START,
+      "e",
+      6,
+      7,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+    testTextAtOffset(
+      kCaretOffset,
+      BOUNDARY_LINE_START,
+      "e",
+      6,
+      7,
+      textarea,
+      kOk,
+      kOk,
+      kOk
+    );
+
+    const empty = findAccessibleChildByID(docAcc, "empty", [nsIAccessibleText]);
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, empty);
+    empty.takeFocus();
+    evt = await caretMoved;
+    is(empty.caretOffset, 0, "Caret offset in empty textarea is 0");
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+  },
+  { chrome: true, topLevel: true, iframe: true, remoteIframe: true }
+);
+
+/**
+ * Test setting the caret.
+ */
+addAccessibleTask(
+  `
+
+
      
+  
      ab
      
+
      
+  `,
+  async function (browser, docAcc) {
+    const textarea = findAccessibleChildByID(docAcc, "textarea", [
+      nsIAccessibleText,
+    ]);
+    info("textarea: Set caret offset to 0");
+    let focused = waitForEvent(EVENT_FOCUS, textarea);
+    let caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    textarea.caretOffset = 0;
+    await focused;
+    await caretMoved;
+    is(textarea.caretOffset, 0, "textarea caret correct");
+    // Test setting caret to another line.
+    info("textarea: Set caret offset to 3");
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    textarea.caretOffset = 3;
+    await caretMoved;
+    is(textarea.caretOffset, 3, "textarea caret correct");
+    // Test setting caret to the end.
+    info("textarea: Set caret offset to 4 (end)");
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    textarea.caretOffset = 4;
+    await caretMoved;
+    is(textarea.caretOffset, 4, "textarea caret correct");
+
+    const editable = findAccessibleChildByID(docAcc, "editable", [
+      nsIAccessibleText,
+    ]);
+    focused = waitForEvent(EVENT_FOCUS, editable);
+    editable.takeFocus();
+    await focused;
+    const p = findAccessibleChildByID(docAcc, "p", [nsIAccessibleText]);
+    info("p: Set caret offset to 0");
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, p);
+    p.caretOffset = 0;
+    await focused;
+    await caretMoved;
+    is(p.caretOffset, 0, "p caret correct");
+    const link = findAccessibleChildByID(docAcc, "link", [nsIAccessibleText]);
+    info("link: Set caret offset to 0");
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, link);
+    link.caretOffset = 0;
+    await caretMoved;
+    is(link.caretOffset, 0, "link caret correct");
+  },
+  { chrome: true, topLevel: true, iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/text/browser_text_paragraph_boundary.js b/accessible/tests/browser/text/browser_text_paragraph_boundary.js
new file mode 100644
index 0000000000..04e64520e8
--- /dev/null
+++ b/accessible/tests/browser/text/browser_text_paragraph_boundary.js
@@ -0,0 +1,22 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+// Test that we don't crash the parent process when querying the paragraph
+// boundary on an Accessible which has remote ProxyAccessible descendants.
+addAccessibleTask(
+  `test`,
+  async function testParagraphBoundaryWithRemoteDescendants(browser, accDoc) {
+    const root = getRootAccessible(document).QueryInterface(
+      Ci.nsIAccessibleText
+    );
+    let start = {};
+    let end = {};
+    // The offsets will change as the Firefox UI changes. We don't really care
+    // what they are, just that we don't crash.
+    root.getTextAtOffset(0, nsIAccessibleText.BOUNDARY_PARAGRAPH, start, end);
+    ok(true, "Getting paragraph boundary succeeded");
+  }
+);
diff --git a/accessible/tests/browser/text/browser_text_selection.js b/accessible/tests/browser/text/browser_text_selection.js
new file mode 100644
index 0000000000..3b47d5f36e
--- /dev/null
+++ b/accessible/tests/browser/text/browser_text_selection.js
@@ -0,0 +1,344 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/text.js */
+
+function waitForSelectionChange(selectionAcc, caretAcc) {
+  if (!caretAcc) {
+    caretAcc = selectionAcc;
+  }
+  return waitForEvents(
+    [
+      [EVENT_TEXT_SELECTION_CHANGED, selectionAcc],
+      // We must swallow the caret events as well to avoid confusion with later,
+      // unrelated caret events.
+      [EVENT_TEXT_CARET_MOVED, caretAcc],
+    ],
+    true
+  );
+}
+
+function changeDomSelection(
+  browser,
+  anchorId,
+  anchorOffset,
+  focusId,
+  focusOffset
+) {
+  return invokeContentTask(
+    browser,
+    [anchorId, anchorOffset, focusId, focusOffset],
+    (
+      contentAnchorId,
+      contentAnchorOffset,
+      contentFocusId,
+      contentFocusOffset
+    ) => {
+      // We want the text node, so we use firstChild.
+      content.window
+        .getSelection()
+        .setBaseAndExtent(
+          content.document.getElementById(contentAnchorId).firstChild,
+          contentAnchorOffset,
+          content.document.getElementById(contentFocusId).firstChild,
+          contentFocusOffset
+        );
+    }
+  );
+}
+
+function testSelectionRange(
+  browser,
+  root,
+  startContainer,
+  startOffset,
+  endContainer,
+  endOffset
+) {
+  let selRange = root.selectionRanges.queryElementAt(0, nsIAccessibleTextRange);
+  testTextRange(
+    selRange,
+    getAccessibleDOMNodeID(root),
+    startContainer,
+    startOffset,
+    endContainer,
+    endOffset
+  );
+}
+
+/**
+ * Test text selection via keyboard.
+ */
+addAccessibleTask(
+  `
+
+
      
+  
      a
      
+  
      bc
      
+  
+
      
+  `,
+  async function (browser, docAcc) {
+    queryInterfaces(docAcc, [nsIAccessibleText]);
+
+    const textarea = findAccessibleChildByID(docAcc, "textarea", [
+      nsIAccessibleText,
+    ]);
+    info("Focusing textarea");
+    let caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    textarea.takeFocus();
+    await caretMoved;
+    testSelectionRange(browser, textarea, textarea, 0, textarea, 0);
+    is(textarea.selectionCount, 0, "textarea selectionCount is 0");
+    is(docAcc.selectionCount, 0, "document selectionCount is 0");
+
+    info("Selecting a in textarea");
+    let selChanged = waitForSelectionChange(textarea);
+    EventUtils.synthesizeKey("KEY_ArrowRight", { shiftKey: true });
+    await selChanged;
+    testSelectionRange(browser, textarea, textarea, 0, textarea, 1);
+    testTextGetSelection(textarea, 0, 1, 0);
+
+    info("Selecting b in textarea");
+    selChanged = waitForSelectionChange(textarea);
+    EventUtils.synthesizeKey("KEY_ArrowRight", { shiftKey: true });
+    await selChanged;
+    testSelectionRange(browser, textarea, textarea, 0, textarea, 2);
+    testTextGetSelection(textarea, 0, 2, 0);
+
+    info("Unselecting b in textarea");
+    selChanged = waitForSelectionChange(textarea);
+    EventUtils.synthesizeKey("KEY_ArrowLeft", { shiftKey: true });
+    await selChanged;
+    testSelectionRange(browser, textarea, textarea, 0, textarea, 1);
+    testTextGetSelection(textarea, 0, 1, 0);
+
+    info("Unselecting a in textarea");
+    // We don't fire selection changed when the selection collapses.
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, textarea);
+    EventUtils.synthesizeKey("KEY_ArrowLeft", { shiftKey: true });
+    await caretMoved;
+    testSelectionRange(browser, textarea, textarea, 0, textarea, 0);
+    is(textarea.selectionCount, 0, "textarea selectionCount is 0");
+
+    const editable = findAccessibleChildByID(docAcc, "editable", [
+      nsIAccessibleText,
+    ]);
+    const p1 = findAccessibleChildByID(docAcc, "p1", [nsIAccessibleText]);
+    info("Focusing editable, caret to start");
+    caretMoved = waitForEvent(EVENT_TEXT_CARET_MOVED, p1);
+    await changeDomSelection(browser, "p1", 0, "p1", 0);
+    await caretMoved;
+    testSelectionRange(browser, editable, p1, 0, p1, 0);
+    is(editable.selectionCount, 0, "editable selectionCount is 0");
+    is(p1.selectionCount, 0, "p1 selectionCount is 0");
+    is(docAcc.selectionCount, 0, "document selectionCount is 0");
+
+    info("Selecting a in editable");
+    selChanged = waitForSelectionChange(p1);
+    await changeDomSelection(browser, "p1", 0, "p1", 1);
+    await selChanged;
+    testSelectionRange(browser, editable, p1, 0, p1, 1);
+    testTextGetSelection(editable, 0, 1, 0);
+    testTextGetSelection(p1, 0, 1, 0);
+    const p2 = findAccessibleChildByID(docAcc, "p2", [nsIAccessibleText]);
+    if (browser.isRemoteBrowser) {
+      is(p2.selectionCount, 0, "p2 selectionCount is 0");
+    } else {
+      todo(
+        false,
+        "Siblings report wrong selection in non-cache implementation"
+      );
+    }
+
+    // Selecting across two Accessibles with only a partial selection in the
+    // second.
+    info("Selecting ab in editable");
+    selChanged = waitForSelectionChange(editable, p2);
+    await changeDomSelection(browser, "p1", 0, "p2", 1);
+    await selChanged;
+    testSelectionRange(browser, editable, p1, 0, p2, 1);
+    testTextGetSelection(editable, 0, 2, 0);
+    testTextGetSelection(p1, 0, 1, 0);
+    testTextGetSelection(p2, 0, 1, 0);
+
+    const pWithLink = findAccessibleChildByID(docAcc, "pWithLink", [
+      nsIAccessibleText,
+    ]);
+    const link = findAccessibleChildByID(docAcc, "link", [nsIAccessibleText]);
+    // Selecting both text and a link.
+    info("Selecting de in editable");
+    selChanged = waitForSelectionChange(pWithLink, link);
+    await changeDomSelection(browser, "pWithLink", 0, "link", 1);
+    await selChanged;
+    testSelectionRange(browser, editable, pWithLink, 0, link, 1);
+    testTextGetSelection(editable, 2, 3, 0);
+    testTextGetSelection(pWithLink, 0, 2, 0);
+    testTextGetSelection(link, 0, 1, 0);
+
+    // Selecting a link and text on either side.
+    info("Selecting def in editable");
+    selChanged = waitForSelectionChange(pWithLink, pWithLink);
+    await changeDomSelection(browser, "pWithLink", 0, "textAfterLink", 1);
+    await selChanged;
+    testSelectionRange(browser, editable, pWithLink, 0, pWithLink, 3);
+    testTextGetSelection(editable, 2, 3, 0);
+    testTextGetSelection(pWithLink, 0, 3, 0);
+    testTextGetSelection(link, 0, 1, 0);
+
+    // Noncontiguous selection.
+    info("Selecting a in editable");
+    selChanged = waitForSelectionChange(p1);
+    await changeDomSelection(browser, "p1", 0, "p1", 1);
+    await selChanged;
+    info("Adding c to selection in editable");
+    selChanged = waitForSelectionChange(p2);
+    await invokeContentTask(browser, [], () => {
+      const r = content.document.createRange();
+      const p2text = content.document.getElementById("p2").firstChild;
+      r.setStart(p2text, 0);
+      r.setEnd(p2text, 1);
+      content.window.getSelection().addRange(r);
+    });
+    await selChanged;
+    let selRanges = editable.selectionRanges;
+    is(selRanges.length, 2, "2 selection ranges");
+    testTextRange(
+      selRanges.queryElementAt(0, nsIAccessibleTextRange),
+      "range 0",
+      p1,
+      0,
+      p1,
+      1
+    );
+    testTextRange(
+      selRanges.queryElementAt(1, nsIAccessibleTextRange),
+      "range 1",
+      p2,
+      0,
+      p2,
+      1
+    );
+    is(editable.selectionCount, 2, "editable selectionCount is 2");
+    testTextGetSelection(editable, 0, 1, 0);
+    testTextGetSelection(editable, 1, 2, 1);
+    if (browser.isRemoteBrowser) {
+      is(p1.selectionCount, 1, "p1 selectionCount is 1");
+      testTextGetSelection(p1, 0, 1, 0);
+      is(p2.selectionCount, 1, "p2 selectionCount is 1");
+      testTextGetSelection(p2, 0, 1, 0);
+    } else {
+      todo(
+        false,
+        "Siblings report wrong selection in non-cache implementation"
+      );
+    }
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+/**
+ * Tabbing to an input selects all its text. Test that the cached selection
+ *reflects this. This has to be done separately from the other selection tests
+ * because prior contentEditable selection changes the events that get fired.
+ */
+addAccessibleTask(
+  `
+
+
+  `,
+  async function (browser, docAcc) {
+    // The tab order is different when there's an iframe, so focus a control
+    // before the input to make tab consistent.
+    info("Focusing before");
+    const before = findAccessibleChildByID(docAcc, "before");
+    // Focusing a button fires a selection event. We must swallow this to
+    // avoid confusing the later test.
+    let events = waitForOrderedEvents([
+      [EVENT_FOCUS, before],
+      [EVENT_TEXT_SELECTION_CHANGED, docAcc],
+    ]);
+    before.takeFocus();
+    await events;
+
+    const input = findAccessibleChildByID(docAcc, "input", [nsIAccessibleText]);
+    info("Tabbing to input");
+    events = waitForEvents(
+      {
+        expected: [
+          [EVENT_FOCUS, input],
+          [EVENT_TEXT_SELECTION_CHANGED, input],
+        ],
+        unexpected: [[EVENT_TEXT_SELECTION_CHANGED, docAcc]],
+      },
+      "input",
+      false,
+      (args, task) => invokeContentTask(browser, args, task)
+    );
+    EventUtils.synthesizeKey("KEY_Tab");
+    await events;
+    testSelectionRange(browser, input, input, 0, input, 4);
+    testTextGetSelection(input, 0, 4, 0);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
+
+/**
+ * Test text selection via API.
+ */
+addAccessibleTask(
+  `
+  
      hello world
      
+  
        
+    
      1. Number one
        2. 
+  
      
+  `,
+  async function (browser, docAcc) {
+    const paragraph = findAccessibleChildByID(docAcc, "paragraph", [
+      nsIAccessibleText,
+    ]);
+
+    let selChanged = waitForSelectionChange(paragraph);
+    paragraph.setSelectionBounds(0, 2, 4);
+    await selChanged;
+    testTextGetSelection(paragraph, 2, 4, 0);
+
+    selChanged = waitForSelectionChange(paragraph);
+    paragraph.addSelection(6, 10);
+    await selChanged;
+    testTextGetSelection(paragraph, 6, 10, 1);
+    is(paragraph.selectionCount, 2, "paragraph selectionCount is 2");
+
+    selChanged = waitForSelectionChange(paragraph);
+    paragraph.removeSelection(0);
+    await selChanged;
+    testTextGetSelection(paragraph, 6, 10, 0);
+    is(paragraph.selectionCount, 1, "paragraph selectionCount is 1");
+
+    const li = findAccessibleChildByID(docAcc, "li", [nsIAccessibleText]);
+
+    selChanged = waitForSelectionChange(li);
+    li.setSelectionBounds(0, 1, 8);
+    await selChanged;
+    testTextGetSelection(li, 3, 8, 0);
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
diff --git a/accessible/tests/browser/text/browser_text_spelling.js b/accessible/tests/browser/text/browser_text_spelling.js
new file mode 100644
index 0000000000..14c5c16be4
--- /dev/null
+++ b/accessible/tests/browser/text/browser_text_spelling.js
@@ -0,0 +1,151 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/text.js */
+/* import-globals-from ../../mochitest/attributes.js */
+loadScripts(
+  { name: "text.js", dir: MOCHITESTS_DIR },
+  { name: "attributes.js", dir: MOCHITESTS_DIR }
+);
+
+const boldAttrs = { "font-weight": "700" };
+
+/*
+ * Given a text accessible and a list of ranges
+ * check if those ranges match the misspelled ranges in the accessible.
+ */
+function misspelledRangesMatch(acc, ranges) {
+  let offset = 0;
+  let expectedRanges = [...ranges];
+  let charCount = acc.characterCount;
+  while (offset < charCount) {
+    let start = {};
+    let end = {};
+    let attributes = acc.getTextAttributes(false, offset, start, end);
+    offset = end.value;
+    try {
+      if (attributes.getStringProperty("invalid") == "spelling") {
+        let expected = expectedRanges.shift();
+        if (
+          !expected ||
+          expected[0] != start.value ||
+          expected[1] != end.value
+        ) {
+          return false;
+        }
+      }
+    } catch (err) {}
+  }
+
+  return !expectedRanges.length;
+}
+
+/*
+ * Returns a promise that resolves after a text attribute changed event
+ * brings us to a state where the misspelled ranges match.
+ */
+async function waitForMisspelledRanges(acc, ranges) {
+  await waitForEvent(EVENT_TEXT_ATTRIBUTE_CHANGED);
+  await untilCacheOk(
+    () => misspelledRangesMatch(acc, ranges),
+    `Misspelled ranges match: ${JSON.stringify(ranges)}`
+  );
+}
+
+/**
+ * Test spelling errors.
+ */
+addAccessibleTask(
+  `
+
+
      plain tset bold
      
+  `,
+  async function (browser, docAcc) {
+    const textarea = findAccessibleChildByID(docAcc, "textarea", [
+      nsIAccessibleText,
+    ]);
+    info("Focusing textarea");
+    let spellingChanged = waitForMisspelledRanges(textarea, [
+      [5, 9],
+      [10, 14],
+    ]);
+    textarea.takeFocus();
+    await spellingChanged;
+
+    // Test removal of a spelling error.
+    info('textarea: Changing first "tset" to "test"');
+    // setTextRange fires multiple EVENT_TEXT_ATTRIBUTE_CHANGED, so replace by
+    // selecting and typing instead.
+    spellingChanged = waitForMisspelledRanges(textarea, [[10, 14]]);
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("textarea").setSelectionRange(5, 9);
+    });
+    EventUtils.sendString("test");
+    // Move the cursor to trigger spell check.
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    await spellingChanged;
+
+    // Test addition of a spelling error.
+    info('textarea: Changing it back to "tset"');
+    spellingChanged = waitForMisspelledRanges(textarea, [
+      [5, 9],
+      [10, 14],
+    ]);
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("textarea").setSelectionRange(5, 9);
+    });
+    EventUtils.sendString("tset");
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    await spellingChanged;
+
+    // Ensure that changing the text without changing any spelling errors
+    // correctly updates offsets.
+    info('textarea: Changing first "test" to "the"');
+    // Spelling errors don't change, so we won't get
+    // EVENT_TEXT_ATTRIBUTE_CHANGED. We change the text, wait for the insertion
+    // and then select a character so we know when the change is done.
+    let inserted = waitForEvent(EVENT_TEXT_INSERTED, textarea);
+    await invokeContentTask(browser, [], () => {
+      content.document.getElementById("textarea").setSelectionRange(0, 4);
+    });
+    EventUtils.sendString("the");
+    await inserted;
+    let selected = waitForEvent(EVENT_TEXT_SELECTION_CHANGED, textarea);
+    EventUtils.synthesizeKey("KEY_ArrowRight", { shiftKey: true });
+    await selected;
+    const expectedRanges = [
+      [4, 8],
+      [9, 13],
+    ];
+    await untilCacheOk(
+      () => misspelledRangesMatch(textarea, expectedRanges),
+      `Misspelled ranges match: ${JSON.stringify(expectedRanges)}`
+    );
+
+    const editable = findAccessibleChildByID(docAcc, "editable", [
+      nsIAccessibleText,
+    ]);
+    info("Focusing editable");
+    spellingChanged = waitForMisspelledRanges(editable, [[6, 10]]);
+    editable.takeFocus();
+    await spellingChanged;
+    // Test normal text and spelling errors crossing text nodes.
+    testTextAttrs(editable, 0, {}, {}, 0, 6, true); // "plain "
+    // Ensure we detect the spelling error even though there is a style change
+    // after it.
+    testTextAttrs(editable, 6, { invalid: "spelling" }, {}, 6, 10, true); // "tset"
+    testTextAttrs(editable, 10, {}, {}, 10, 11, true); // " "
+    // Ensure a style change is still detected in the presence of a spelling
+    // error.
+    testTextAttrs(editable, 11, boldAttrs, {}, 11, 15, true); // "bold"
+  },
+  {
+    chrome: true,
+    topLevel: true,
+    iframe: true,
+    remoteIframe: true,
+  }
+);
diff --git a/accessible/tests/browser/text/browser_textleafpoint.js b/accessible/tests/browser/text/browser_textleafpoint.js
new file mode 100644
index 0000000000..894e982142
--- /dev/null
+++ b/accessible/tests/browser/text/browser_textleafpoint.js
@@ -0,0 +1,485 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/text.js */
+
+addAccessibleTask(
+  `
+  
      A bug
+hid in
+the big rug.
      
+`,
+  function (browser, docAcc) {
+    const container = findAccessibleChildByID(docAcc, "p");
+    const firstPoint = createTextLeafPoint(container, 0);
+    const lastPoint = createTextLeafPoint(container, kTextEndOffset);
+
+    let charSequence = [
+      ...textBoundaryGenerator(firstPoint, BOUNDARY_CHAR, DIRECTION_NEXT),
+    ];
+
+    testPointEqual(
+      firstPoint,
+      charSequence[0],
+      "Point constructed via container and offset 0 is first character point."
+    );
+    testPointEqual(
+      lastPoint,
+      charSequence[charSequence.length - 1],
+      "Point constructed via container and kTextEndOffset is last character point."
+    );
+
+    const expectedCharSequence = [
+      ["A bug\nh", 0],
+      ["A bug\nh", 1],
+      ["A bug\nh", 2],
+      ["A bug\nh", 3],
+      ["A bug\nh", 4],
+      ["A bug\nh", 5],
+      ["A bug\nh", 6],
+      ["id i", 0],
+      ["id i", 1],
+      ["id i", 2],
+      ["id i", 3],
+      ["n\nthe ", 0],
+      ["n\nthe ", 1],
+      ["n\nthe ", 2],
+      ["n\nthe ", 3],
+      ["n\nthe ", 4],
+      ["n\nthe ", 5],
+      ["big", 0],
+      ["big", 1],
+      ["big", 2],
+      [" rug.", 0],
+      [" rug.", 1],
+      [" rug.", 2],
+      [" rug.", 3],
+      [" rug.", 4],
+      [" rug.", 5],
+    ];
+
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_CHAR,
+      DIRECTION_NEXT,
+      expectedCharSequence,
+      "Forward BOUNDARY_CHAR sequence is correct"
+    );
+
+    testBoundarySequence(
+      lastPoint,
+      BOUNDARY_CHAR,
+      DIRECTION_PREVIOUS,
+      [...expectedCharSequence].reverse(),
+      "Backward BOUNDARY_CHAR sequence is correct"
+    );
+
+    const expectedWordStartSequence = [
+      ["A bug\nh", 0],
+      ["A bug\nh", 2],
+      ["A bug\nh", 6],
+      ["id i", 3],
+      ["n\nthe ", 2],
+      ["big", 0],
+      [" rug.", 1],
+    ];
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_WORD_START,
+      DIRECTION_NEXT,
+      // Add last point in doc
+      [...expectedWordStartSequence, readablePoint(lastPoint)],
+      "Forward BOUNDARY_WORD_START sequence is correct"
+    );
+
+    testBoundarySequence(
+      lastPoint,
+      BOUNDARY_WORD_START,
+      DIRECTION_PREVIOUS,
+      [...expectedWordStartSequence].reverse(),
+      "Backward BOUNDARY_WORD_START sequence is correct"
+    );
+
+    const expectedWordEndSequence = [
+      ["A bug\nh", 1],
+      ["A bug\nh", 5],
+      ["id i", 2],
+      ["n\nthe ", 1],
+      ["n\nthe ", 5],
+      [" rug.", 0],
+      [" rug.", 5],
+    ];
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_WORD_END,
+      DIRECTION_NEXT,
+      expectedWordEndSequence,
+      "Forward BOUNDARY_WORD_END sequence is correct"
+    );
+
+    testBoundarySequence(
+      lastPoint,
+      BOUNDARY_WORD_END,
+      DIRECTION_PREVIOUS,
+      [readablePoint(firstPoint), ...expectedWordEndSequence].reverse(),
+      "Backward BOUNDARY_WORD_END sequence is correct"
+    );
+
+    const expectedLineStartSequence = [
+      ["A bug\nh", 0],
+      ["A bug\nh", 6],
+      ["n\nthe ", 2],
+    ];
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_LINE_START,
+      DIRECTION_NEXT,
+      // Add last point in doc
+      [...expectedLineStartSequence, readablePoint(lastPoint)],
+      "Forward BOUNDARY_LINE_START sequence is correct"
+    );
+
+    testBoundarySequence(
+      lastPoint,
+      BOUNDARY_LINE_START,
+      DIRECTION_PREVIOUS,
+      [...expectedLineStartSequence].reverse(),
+      "Backward BOUNDARY_LINE_START sequence is correct"
+    );
+
+    const expectedLineEndSequence = [
+      ["A bug\nh", 5],
+      ["n\nthe ", 1],
+    ];
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_LINE_END,
+      DIRECTION_NEXT,
+      // Add last point in doc
+      [...expectedLineEndSequence, readablePoint(lastPoint)],
+      "Forward BOUNDARY_LINE_END sequence is correct",
+      { todo: true }
+    );
+
+    testBoundarySequence(
+      lastPoint,
+      BOUNDARY_LINE_END,
+      DIRECTION_PREVIOUS,
+      [readablePoint(firstPoint), ...expectedLineEndSequence].reverse(),
+      "Backward BOUNDARY_LINE_END sequence is correct"
+    );
+  },
+  { chrome: true, topLevel: true, iframe: false, remoteIframe: false }
+);
+
+addAccessibleTask(
+  `
      
+    Rob caop up.
+  
      `,
+  function (browser, docAcc) {
+    const container = findAccessibleChildByID(docAcc, "p");
+    const firstPoint = createTextLeafPoint(container, 0);
+    const lastPoint = createTextLeafPoint(container, kTextEndOffset);
+
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_CHAR,
+      DIRECTION_NEXT,
+      [
+        ["Rob ca", 0],
+        ["Rob ca", 1],
+        ["Rob ca", 2],
+        ["Rob ca", 3],
+        ["Rob ca", 4],
+        ["Rob ca", 5],
+        ["n m", 0],
+        ["n m", 1],
+        ["n m", 2],
+        ["n m", 3],
+      ],
+      "Forward BOUNDARY_CHAR sequence when stopping in editable is correct",
+      { flags: BOUNDARY_FLAG_STOP_IN_EDITABLE }
+    );
+
+    testBoundarySequence(
+      lastPoint,
+      BOUNDARY_CHAR,
+      DIRECTION_PREVIOUS,
+      [
+        ["op up. ", 7],
+        ["op up. ", 6],
+        ["op up. ", 5],
+        ["op up. ", 4],
+        ["op up. ", 3],
+        ["op up. ", 2],
+        ["op up. ", 1],
+        ["op up. ", 0],
+        ["n m", 2],
+        ["n m", 1],
+        ["n m", 0],
+      ],
+      "Backward BOUNDARY_CHAR sequence when stopping in editable is correct",
+      { flags: BOUNDARY_FLAG_STOP_IN_EDITABLE }
+    );
+
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_WORD_START,
+      DIRECTION_NEXT,
+      [
+        ["Rob ca", 0],
+        ["Rob ca", 4],
+        ["n m", 2],
+      ],
+      "Forward BOUNDARY_WORD_START sequence when stopping in editable is correct",
+      {
+        flags: BOUNDARY_FLAG_STOP_IN_EDITABLE,
+        todo: true, //  Shouldn't consider end of input a word start
+      }
+    );
+  },
+  { chrome: true, topLevel: true, iframe: false, remoteIframe: false }
+);
+
+addAccessibleTask(
+  `
+  
      A bug
+on a rug
      
+  
      
+    Numbers:
+  
      
+  
        
+    
      • One
        • 
+    
      • Two
        • 
+    
      • Three
        • 
+  
      `,
+  function (browser, docAcc) {
+    const firstPoint = createTextLeafPoint(docAcc, 0);
+    const lastPoint = createTextLeafPoint(docAcc, kTextEndOffset);
+
+    const expectedParagraphStart = [
+      ["A bug\non a ", 0],
+      ["A bug\non a ", 6],
+      ["rug", 0],
+      ["Numbers: ", 0],
+      ["• ", 0],
+      ["• ", 0],
+      ["• ", 0],
+    ];
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_PARAGRAPH,
+      DIRECTION_NEXT,
+      [...expectedParagraphStart, readablePoint(lastPoint)],
+      "Forward BOUNDARY_PARAGRAPH sequence is correct"
+    );
+
+    const paragraphStart = createTextLeafPoint(
+      findAccessibleChildByID(docAcc, "p2").firstChild,
+      0
+    );
+    const wordEnd = paragraphStart.findBoundary(
+      BOUNDARY_WORD_END,
+      DIRECTION_NEXT,
+      BOUNDARY_FLAG_INCLUDE_ORIGIN
+    );
+    testPointEqual(
+      wordEnd,
+      paragraphStart,
+      "The word end from the previous block is the first point in this block"
+    );
+  },
+  { chrome: true, topLevel: true, iframe: false, remoteIframe: false }
+);
+
+// Test for skipping list item bullets.
+addAccessibleTask(
+  `
        
+    
      • One
        • 
+    
      • Two
        • 
+    
      • Three
+Four
        • 
+  
      `,
+  function (browser, docAcc) {
+    const firstPoint = createTextLeafPoint(docAcc, 0);
+    const lastPoint = createTextLeafPoint(docAcc, kTextEndOffset);
+
+    const firstNonMarkerPoint = firstPoint.findBoundary(
+      BOUNDARY_CHAR,
+      DIRECTION_NEXT,
+      BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER | BOUNDARY_FLAG_INCLUDE_ORIGIN
+    );
+    Assert.deepEqual(
+      readablePoint(firstNonMarkerPoint),
+      ["One", 0],
+      "First non-marker point is correct"
+    );
+
+    const expectedParagraphStart = [
+      ["One", 0],
+      ["Two", 0],
+      ["Three\nFour", 0],
+      ["Three\nFour", 6],
+    ];
+
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_PARAGRAPH,
+      DIRECTION_NEXT,
+      [...expectedParagraphStart, readablePoint(lastPoint)],
+      "Forward BOUNDARY_PARAGRAPH skipping list item markers sequence is correct",
+      { flags: BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER }
+    );
+
+    testBoundarySequence(
+      lastPoint,
+      BOUNDARY_PARAGRAPH,
+      DIRECTION_PREVIOUS,
+      [...expectedParagraphStart].reverse(),
+      "Backward BOUNDARY_PARAGRAPH skipping list item markers sequence is correct",
+      { flags: BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER }
+    );
+
+    const expectedCharSequence = [
+      ["One", 0],
+      ["One", 1],
+      ["One", 2],
+      ["Two", 0],
+      ["Two", 1],
+      ["Two", 2],
+      ["Three\nFour", 0],
+      ["Three\nFour", 1],
+      ["Three\nFour", 2],
+      ["Three\nFour", 3],
+      ["Three\nFour", 4],
+      ["Three\nFour", 5],
+      ["Three\nFour", 6],
+      ["Three\nFour", 7],
+      ["Three\nFour", 8],
+      ["Three\nFour", 9],
+      ["Three\nFour", 10],
+    ];
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_CHAR,
+      DIRECTION_NEXT,
+      expectedCharSequence,
+      "Forward BOUNDARY_CHAR skipping list item markers sequence is correct",
+      { flags: BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER }
+    );
+
+    testBoundarySequence(
+      lastPoint,
+      BOUNDARY_CHAR,
+      DIRECTION_PREVIOUS,
+      [...expectedCharSequence].reverse(),
+      "Backward BOUNDARY_CHAR skipping list item markers sequence is correct",
+      { flags: BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER }
+    );
+
+    const expectedWordStartSequence = [
+      ["One", 0],
+      ["Two", 0],
+      ["Three\nFour", 0],
+      ["Three\nFour", 6],
+    ];
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_WORD_START,
+      DIRECTION_NEXT,
+      [...expectedWordStartSequence, readablePoint(lastPoint)],
+      "Forward BOUNDARY_WORD_START skipping list item markers sequence is correct",
+      { flags: BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER }
+    );
+
+    testBoundarySequence(
+      lastPoint,
+      BOUNDARY_WORD_START,
+      DIRECTION_PREVIOUS,
+      [...expectedWordStartSequence].reverse(),
+      "Backward BOUNDARY_WORD_START skipping list item markers sequence is correct",
+      { flags: BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER }
+    );
+
+    const expectedWordEndSequence = [
+      ["Two", 0],
+      ["Three\nFour", 0],
+      ["Three\nFour", 5],
+      ["Three\nFour", 10],
+    ];
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_WORD_END,
+      DIRECTION_NEXT,
+      expectedWordEndSequence,
+      "Forward BOUNDARY_WORD_END skipping list item markers sequence is correct",
+      { flags: BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER }
+    );
+
+    testBoundarySequence(
+      lastPoint,
+      BOUNDARY_WORD_END,
+      DIRECTION_PREVIOUS,
+      [
+        readablePoint(firstNonMarkerPoint),
+        ...expectedWordEndSequence,
+      ].reverse(),
+      "Backward BOUNDARY_WORD_END skipping list item markers sequence is correct",
+      { flags: BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER }
+    );
+
+    const expectedLineStartSequence = [
+      ["One", 0],
+      ["Two", 0],
+      ["Three\nFour", 0],
+      ["Three\nFour", 6],
+    ];
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_LINE_START,
+      DIRECTION_NEXT,
+      // Add last point in doc
+      [...expectedLineStartSequence, readablePoint(lastPoint)],
+      "Forward BOUNDARY_LINE_START skipping list item markers sequence is correct",
+      { flags: BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER }
+    );
+
+    testBoundarySequence(
+      lastPoint,
+      BOUNDARY_LINE_START,
+      DIRECTION_PREVIOUS,
+      // Add last point in doc
+      [...expectedLineStartSequence].reverse(),
+      "Backward BOUNDARY_LINE_START skipping list item markers sequence is correct",
+      { flags: BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER }
+    );
+  },
+  { chrome: true, topLevel: true, iframe: false, remoteIframe: false }
+);
+
+/**
+ * Test the paragraph boundary on tables.
+ */
+addAccessibleTask(
+  `
+
+  
+  
+
      ab
      cd
      
+  `,
+  async function (browser, docAcc) {
+    const firstPoint = createTextLeafPoint(docAcc, 0);
+    const lastPoint = createTextLeafPoint(docAcc, kTextEndOffset);
+    testBoundarySequence(
+      firstPoint,
+      BOUNDARY_PARAGRAPH,
+      DIRECTION_NEXT,
+      [["a", 0], ["b", 0], ["c", 0], ["d", 0], readablePoint(lastPoint)],
+      "Forward BOUNDARY_PARAGRAPH sequence is correct"
+    );
+  },
+  { chrome: true, topLevel: true, iframe: false, remoteIframe: false }
+);
diff --git a/accessible/tests/browser/text/head.js b/accessible/tests/browser/text/head.js
new file mode 100644
index 0000000000..fa4b095892
--- /dev/null
+++ b/accessible/tests/browser/text/head.js
@@ -0,0 +1,276 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* exported createTextLeafPoint, DIRECTION_NEXT, DIRECTION_PREVIOUS,
+ BOUNDARY_FLAG_DEFAULT, BOUNDARY_FLAG_INCLUDE_ORIGIN,
+ BOUNDARY_FLAG_STOP_IN_EDITABLE, BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER,
+ readablePoint, testPointEqual, textBoundaryGenerator, testBoundarySequence,
+ isFinalValueCorrect, isFinalValueCorrect, testInsertText, testDeleteText,
+ testCopyText, testPasteText, testCutText, testSetTextContents */
+
+// Load the shared-head file first.
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js",
+  this
+);
+
+// Loading and common.js from accessible/tests/mochitest/ for all tests, as
+// well as promisified-events.js.
+
+/* import-globals-from ../../mochitest/role.js */
+
+loadScripts(
+  { name: "common.js", dir: MOCHITESTS_DIR },
+  { name: "text.js", dir: MOCHITESTS_DIR },
+  { name: "role.js", dir: MOCHITESTS_DIR },
+  { name: "promisified-events.js", dir: MOCHITESTS_DIR }
+);
+
+const DIRECTION_NEXT = Ci.nsIAccessibleTextLeafPoint.DIRECTION_NEXT;
+const DIRECTION_PREVIOUS = Ci.nsIAccessibleTextLeafPoint.DIRECTION_PREVIOUS;
+
+const BOUNDARY_FLAG_DEFAULT =
+  Ci.nsIAccessibleTextLeafPoint.BOUNDARY_FLAG_DEFAULT;
+const BOUNDARY_FLAG_INCLUDE_ORIGIN =
+  Ci.nsIAccessibleTextLeafPoint.BOUNDARY_FLAG_INCLUDE_ORIGIN;
+const BOUNDARY_FLAG_STOP_IN_EDITABLE =
+  Ci.nsIAccessibleTextLeafPoint.BOUNDARY_FLAG_STOP_IN_EDITABLE;
+const BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER =
+  Ci.nsIAccessibleTextLeafPoint.BOUNDARY_FLAG_SKIP_LIST_ITEM_MARKER;
+
+function createTextLeafPoint(acc, offset) {
+  let accService = Cc["@mozilla.org/accessibilityService;1"].getService(
+    nsIAccessibilityService
+  );
+
+  return accService.createTextLeafPoint(acc, offset);
+}
+
+// Converts an nsIAccessibleTextLeafPoint into a human/machine
+// readable tuple with a readable accessible and the offset within it.
+// For a point text leaf it would look like this: ["hello", 2],
+// For a point in an empty input it would look like this ["input#name", 0]
+function readablePoint(point) {
+  const readableLeaf = acc => {
+    let tagName = getAccessibleTagName(acc);
+    if (tagName && !tagName.startsWith("_moz_generated")) {
+      let domNodeID = getAccessibleDOMNodeID(acc);
+      if (domNodeID) {
+        return `${tagName}#${domNodeID}`;
+      }
+      return tagName;
+    }
+
+    return acc.name;
+  };
+
+  return [readableLeaf(point.accessible), point.offset];
+}
+
+function sequenceEqual(val, expected, msg) {
+  Assert.deepEqual(val, expected, msg);
+}
+
+// eslint-disable-next-line camelcase
+function sequenceEqualTodo(val, expected, msg) {
+  todo_is(JSON.stringify(val), JSON.stringify(expected), msg);
+}
+
+function pointsEqual(pointA, pointB) {
+  return (
+    pointA.offset == pointB.offset && pointA.accessible == pointB.accessible
+  );
+}
+
+function testPointEqual(pointA, pointB, msg) {
+  is(pointA.offset, pointB.offset, `Offset mismatch - ${msg}`);
+  is(pointA.accessible, pointB.accessible, `Accessible mismatch - ${msg}`);
+}
+
+function* textBoundaryGenerator(
+  firstPoint,
+  boundaryType,
+  direction,
+  flags = BOUNDARY_FLAG_DEFAULT
+) {
+  // Our start point should be inclusive of the given point.
+  let nextLeafPoint = firstPoint.findBoundary(
+    boundaryType,
+    direction,
+    flags | BOUNDARY_FLAG_INCLUDE_ORIGIN
+  );
+  let textLeafPoint = null;
+
+  do {
+    textLeafPoint = nextLeafPoint;
+    yield textLeafPoint;
+    nextLeafPoint = textLeafPoint.findBoundary(boundaryType, direction, flags);
+  } while (!pointsEqual(textLeafPoint, nextLeafPoint));
+}
+
+// This function takes FindBoundary arguments and an expected sequence
+// of boundary points formatted with readablePoint.
+// For example, word starts would look like this:
+// [["one two", 0], ["one two", 4], ["one two", 7]]
+function testBoundarySequence(
+  startPoint,
+  boundaryType,
+  direction,
+  expectedSequence,
+  msg,
+  options = {}
+) {
+  let sequence = [
+    ...textBoundaryGenerator(
+      startPoint,
+      boundaryType,
+      direction,
+      options.flags ? options.flags : BOUNDARY_FLAG_DEFAULT
+    ),
+  ];
+  (options.todo ? sequenceEqualTodo : sequenceEqual)(
+    sequence.map(readablePoint),
+    expectedSequence,
+    msg
+  );
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// Editable text
+
+async function waitForCopy(browser) {
+  await BrowserTestUtils.waitForContentEvent(browser, "copy", false, evt => {
+    return true;
+  });
+
+  let clipboardData = await invokeContentTask(browser, [], async () => {
+    let text = await content.navigator.clipboard.readText();
+    return text;
+  });
+
+  return clipboardData;
+}
+
+async function isFinalValueCorrect(
+  browser,
+  acc,
+  expectedTextLeafs,
+  msg = "Value is correct"
+) {
+  let value =
+    acc.role == ROLE_ENTRY
+      ? acc.value
+      : await invokeContentTask(browser, [], () => {
+          return content.document.body.textContent;
+        });
+
+  let [before, text, after] = expectedTextLeafs;
+  let finalValue =
+    before && after && !text
+      ? [before, after].join(" ")
+      : [before, text, after].join("");
+
+  is(value.replace("\xa0", " "), finalValue, msg);
+}
+
+function waitForTextChangeEvents(acc, eventSeq) {
+  let events = eventSeq.map(eventType => {
+    return [eventType, acc];
+  });
+
+  if (acc.role == ROLE_ENTRY) {
+    events.push([EVENT_TEXT_VALUE_CHANGE, acc]);
+  }
+
+  return waitForEvents(events);
+}
+
+async function testSetTextContents(acc, text, staticContentOffset, events) {
+  acc.QueryInterface(nsIAccessibleEditableText);
+  let evtPromise = waitForTextChangeEvents(acc, events);
+  acc.setTextContents(text);
+  let evt = (await evtPromise)[0];
+  evt.QueryInterface(nsIAccessibleTextChangeEvent);
+  is(evt.start, staticContentOffset);
+}
+
+async function testInsertText(
+  acc,
+  textToInsert,
+  insertOffset,
+  staticContentOffset
+) {
+  acc.QueryInterface(nsIAccessibleEditableText);
+
+  let evtPromise = waitForTextChangeEvents(acc, [EVENT_TEXT_INSERTED]);
+  acc.insertText(textToInsert, staticContentOffset + insertOffset);
+  let evt = (await evtPromise)[0];
+  evt.QueryInterface(nsIAccessibleTextChangeEvent);
+  is(evt.start, staticContentOffset + insertOffset);
+}
+
+async function testDeleteText(
+  acc,
+  startOffset,
+  endOffset,
+  staticContentOffset
+) {
+  acc.QueryInterface(nsIAccessibleEditableText);
+
+  let evtPromise = waitForTextChangeEvents(acc, [EVENT_TEXT_REMOVED]);
+  acc.deleteText(
+    staticContentOffset + startOffset,
+    staticContentOffset + endOffset
+  );
+  let evt = (await evtPromise)[0];
+  evt.QueryInterface(nsIAccessibleTextChangeEvent);
+  is(evt.start, staticContentOffset + startOffset);
+}
+
+async function testCopyText(
+  acc,
+  startOffset,
+  endOffset,
+  staticContentOffset,
+  browser,
+  aExpectedClipboard = null
+) {
+  acc.QueryInterface(nsIAccessibleEditableText);
+  let copied = waitForCopy(browser);
+  acc.copyText(
+    staticContentOffset + startOffset,
+    staticContentOffset + endOffset
+  );
+  let clipboardText = await copied;
+  if (aExpectedClipboard != null) {
+    is(clipboardText, aExpectedClipboard, "Correct text in clipboard");
+  }
+}
+
+async function testPasteText(acc, insertOffset, staticContentOffset) {
+  acc.QueryInterface(nsIAccessibleEditableText);
+  let evtPromise = waitForTextChangeEvents(acc, [EVENT_TEXT_INSERTED]);
+  acc.pasteText(staticContentOffset + insertOffset);
+
+  let evt = (await evtPromise)[0];
+  evt.QueryInterface(nsIAccessibleTextChangeEvent);
+  // XXX: In non-headless mode pasting text produces several text leaves
+  // and the offset is not what we expect.
+  // is(evt.start, staticContentOffset + insertOffset);
+}
+
+async function testCutText(acc, startOffset, endOffset, staticContentOffset) {
+  acc.QueryInterface(nsIAccessibleEditableText);
+  let evtPromise = waitForTextChangeEvents(acc, [EVENT_TEXT_REMOVED]);
+  acc.cutText(
+    staticContentOffset + startOffset,
+    staticContentOffset + endOffset
+  );
+
+  let evt = (await evtPromise)[0];
+  evt.QueryInterface(nsIAccessibleTextChangeEvent);
+  is(evt.start, staticContentOffset + startOffset);
+}
diff --git a/accessible/tests/browser/tree/browser.ini b/accessible/tests/browser/tree/browser.ini
new file mode 100644
index 0000000000..bb4aedd149
--- /dev/null
+++ b/accessible/tests/browser/tree/browser.ini
@@ -0,0 +1,19 @@
+[DEFAULT]
+subsuite = a11y
+support-files =
+  head.js
+  !/accessible/tests/browser/shared-head.js
+  !/accessible/tests/mochitest/*.js
+  !/accessible/tests/browser/*.jsm
+prefs =
+  javascript.options.asyncstack_capture_debuggee_only=false
+
+[browser_aria_owns.js]
+skip-if = true || (verify && !debug && (os == 'linux')) #Bug 1445513
+[browser_browser_element.js]
+[browser_css_content_visibility.js]
+[browser_general.js]
+[browser_lazy_tabs.js]
+[browser_searchbar.js]
+[browser_shadowdom.js]
+[browser_test_nsIAccessibleDocument_URL.js]
diff --git a/accessible/tests/browser/tree/browser_aria_owns.js b/accessible/tests/browser/tree/browser_aria_owns.js
new file mode 100644
index 0000000000..0ca55ed357
--- /dev/null
+++ b/accessible/tests/browser/tree/browser_aria_owns.js
@@ -0,0 +1,278 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+let NO_MOVE = { unexpected: [[EVENT_REORDER, "container"]] };
+let MOVE = { expected: [[EVENT_REORDER, "container"]] };
+
+// Set last ordinal child as aria-owned, should produce no reorder.
+addAccessibleTask(
+  `
      • Test
      `,
+  async function (browser, accDoc) {
+    let containerAcc = findAccessibleChildByID(accDoc, "container");
+
+    testChildrenIds(containerAcc, ["a"]);
+
+    await contentSpawnMutation(browser, NO_MOVE, function () {
+      // aria-own ordinal child in place, should be a no-op.
+      content.document
+        .getElementById("container")
+        .setAttribute("aria-owns", "a");
+    });
+
+    testChildrenIds(containerAcc, ["a"]);
+  }
+);
+
+// Add a new ordinal child to a container with an aria-owned child.
+// Order should respect aria-owns.
+addAccessibleTask(
+  `
      • Test
      `,
+  async function (browser, accDoc) {
+    let containerAcc = findAccessibleChildByID(accDoc, "container");
+
+    testChildrenIds(containerAcc, ["a"]);
+
+    await contentSpawnMutation(browser, MOVE, function () {
+      let container = content.document.getElementById("container");
+      container.setAttribute("aria-owns", "a");
+
+      let aa = content.document.createElement("li");
+      aa.id = "aa";
+      container.appendChild(aa);
+    });
+
+    testChildrenIds(containerAcc, ["aa", "a"]);
+
+    await contentSpawnMutation(browser, MOVE, function () {
+      content.document.getElementById("container").removeAttribute("aria-owns");
+    });
+
+    testChildrenIds(containerAcc, ["a", "aa"]);
+  }
+);
+
+// Remove a no-move aria-owns attribute, should result in a no-move.
+addAccessibleTask(
+  `
      • Test
      `,
+  async function (browser, accDoc) {
+    let containerAcc = findAccessibleChildByID(accDoc, "container");
+
+    testChildrenIds(containerAcc, ["a"]);
+
+    await contentSpawnMutation(browser, NO_MOVE, function () {
+      // remove aria-owned child that is already ordinal, should be no-op.
+      content.document.getElementById("container").removeAttribute("aria-owns");
+    });
+
+    testChildrenIds(containerAcc, ["a"]);
+  }
+);
+
+// Attempt to steal an aria-owned child. The attempt should fail.
+addAccessibleTask(
+  `
+  
        
+    
      • Test
        • 
+  
      
+  
        
+  
          `,
+  async function (browser, accDoc) {
+    let containerAcc = findAccessibleChildByID(accDoc, "container");
+
+    testChildrenIds(containerAcc, []);
+
+    await contentSpawnMutation(browser, NO_MOVE, function () {
+      content.document
+        .getElementById("container")
+        .setAttribute("aria-owns", "a");
+    });
+
+    testChildrenIds(containerAcc, []);
+  }
+);
+
+// Don't aria-own children of 
+    
+    
+  `,
+  async function (browser, accDoc) {
+    let containerAcc = findAccessibleChildByID(accDoc, "container");
+    let selectAcc = findAccessibleChildByID(accDoc, "select");
+
+    testChildrenIds(containerAcc, []);
+    testChildrenIds(selectAcc.firstChild, ["a", "b"]);
+  }
+);
+
+// Don't allow 
+    
+  `,
+  async function (browser, accDoc) {
+    let containerAcc = findAccessibleChildByID(accDoc, "container");
+    let selectAcc = findAccessibleChildByID(accDoc, "select");
+
+    testChildrenIds(containerAcc, ["a", "b"]);
+    testChildrenIds(selectAcc.firstChild, ["c"]);
+  }
+);
+
+// Don't allow one .
+addAccessibleTask(
+  `
+  
+  `,
+  async function (browser, accDoc) {
+    let selectAcc1 = findAccessibleChildByID(accDoc, "select1");
+    let selectAcc2 = findAccessibleChildByID(accDoc, "select2");
+
+    testChildrenIds(selectAcc1.firstChild, ["a", "b"]);
+    testChildrenIds(selectAcc2.firstChild, ["c"]);
+  }
+);
+
+// Don't allow a 
+    
+    
+    
+  `,
+  async function (browser, accDoc) {
+    let containerAcc = findAccessibleChildByID(accDoc, "container");
+
+    testChildrenIds(containerAcc.firstChild, ["a", "b", "c"]);
+
+    await contentSpawnMutation(browser, NO_MOVE, function () {
+      content.document
+        .getElementById("container")
+        .setAttribute("aria-owns", "a c b");
+    });
+
+    testChildrenIds(containerAcc.firstChild, ["a", "b", "c"]);
+  }
+);
+
+// Don't crash if ID in aria-owns does not exist
+addAccessibleTask(
+  `
+  `,
+  async function (browser, accDoc) {
+    ok(true, "Did not crash");
+  }
+);
+
+addAccessibleTask(
+  `
+  
            
+    
          • Test
            • 
+    
          • Test 2
            • 
+    
          • Test 3
            • 
+  
          
+  
            `,
+  async function (browser, accDoc) {
+    let one = findAccessibleChildByID(accDoc, "one");
+    let two = findAccessibleChildByID(accDoc, "two");
+
+    let waitfor = {
+      expected: [
+        [EVENT_REORDER, "one"],
+        [EVENT_REORDER, "two"],
+      ],
+    };
+
+    await contentSpawnMutation(browser, waitfor, function () {
+      // Put same id twice in aria-owns
+      content.document.getElementById("two").setAttribute("aria-owns", "a a");
+    });
+
+    testChildrenIds(one, ["b", "c"]);
+    testChildrenIds(two, ["a"]);
+
+    await contentSpawnMutation(browser, waitfor, function () {
+      // If the previous double-id aria-owns worked correctly, we should
+      // be in a good state and all is fine..
+      content.document.getElementById("two").setAttribute("aria-owns", "a b");
+    });
+
+    testChildrenIds(one, ["c"]);
+    testChildrenIds(two, ["a", "b"]);
+  }
+);
+
+addAccessibleTask(
+  `
            `,
+  async function (browser, accDoc) {
+    testChildrenIds(accDoc, ["a", "b"]);
+
+    let waitFor = {
+      expected: [[EVENT_REORDER, e => e.accessible == accDoc]],
+    };
+
+    await contentSpawnMutation(browser, waitFor, function () {
+      content.document.documentElement.style.display = "none";
+      content.document.documentElement.getBoundingClientRect();
+      content.document.body.setAttribute("aria-owns", "b a");
+      content.document.documentElement.remove();
+    });
+
+    testChildrenIds(accDoc, []);
+  }
+);
+
+// Don't allow ordinal child to be placed after aria-owned child (bug 1405796)
+addAccessibleTask(
+  `
            Hello
            
+                   
            There
            There
            `,
+  async function (browser, accDoc) {
+    let containerAcc = findAccessibleChildByID(accDoc, "container");
+
+    testChildrenIds(containerAcc, ["a"]);
+
+    await contentSpawnMutation(browser, MOVE, function () {
+      content.document
+        .getElementById("container")
+        .setAttribute("aria-owns", "c");
+    });
+
+    testChildrenIds(containerAcc, ["a", "c"]);
+
+    await contentSpawnMutation(browser, MOVE, function () {
+      let span = content.document.createElement("span");
+      content.document.getElementById("container").appendChild(span);
+
+      let b = content.document.createElement("div");
+      b.id = "b";
+      content.document.getElementById("container").appendChild(b);
+    });
+
+    testChildrenIds(containerAcc, ["a", "b", "c"]);
+
+    await contentSpawnMutation(browser, MOVE, function () {
+      content.document
+        .getElementById("container")
+        .setAttribute("aria-owns", "c d");
+    });
+
+    testChildrenIds(containerAcc, ["a", "b", "c", "d"]);
+  }
+);
diff --git a/accessible/tests/browser/tree/browser_browser_element.js b/accessible/tests/browser/tree/browser_browser_element.js
new file mode 100644
index 0000000000..82be24d93c
--- /dev/null
+++ b/accessible/tests/browser/tree/browser_browser_element.js
@@ -0,0 +1,16 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+// Test that the tree is correct for browser elements containing remote
+// documents.
+addAccessibleTask(`test`, async function (browser, docAcc) {
+  // testAccessibleTree also verifies childCount, indexInParent and parent.
+  testAccessibleTree(browser, {
+    INTERNAL_FRAME: [{ DOCUMENT: [{ TEXT_LEAF: [] }] }],
+  });
+});
diff --git a/accessible/tests/browser/tree/browser_css_content_visibility.js b/accessible/tests/browser/tree/browser_css_content_visibility.js
new file mode 100644
index 0000000000..798e409d86
--- /dev/null
+++ b/accessible/tests/browser/tree/browser_css_content_visibility.js
@@ -0,0 +1,121 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+const snippet1 = `
+  
+  
            
+    
+    
            
+      auto target
+      
            
+        auto child
+      
            
+    
            
+  
            
+  `;
+
+add_setup(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [["layout.css.content-visibility.enabled", true]],
+  });
+});
+
+// Check if the element specified with `content-visibility` property is accessible
+addAccessibleTask(
+  snippet1,
+  async function (browser, accDoc) {
+    const container = findAccessibleChildByID(accDoc, "container");
+    ok(
+      findAccessibleChildByID(container, "hidden-target"),
+      "hidden-target is accessible"
+    );
+    ok(
+      findAccessibleChildByID(container, "auto-target"),
+      "auto-target is accessible"
+    );
+
+    // The test checks if the child element of the element specified with
+    // `content-visibility: hidden` is ignored from a11y tree
+    let target = findAccessibleChildByID(accDoc, "hidden-target");
+    ok(
+      !findAccessibleChildByID(target, "hidden-child"),
+      "Children of hidden-target is not accessible"
+    );
+
+    // The test checks if the child element of the element specified with
+    // `content-visibility: auto` is showen in a11y tree
+    target = findAccessibleChildByID(accDoc, "auto-target");
+    ok(
+      findAccessibleChildByID(target, "auto-child"),
+      "Children of auto-target is accessible"
+    );
+  },
+  { iframe: true, remoteIframe: true, chrome: true }
+);
+
+// Check if the element having `display: contents` and a child of `content-visibility: hidden` element isn't accessible
+const snippet2 = `
+  
+  
+  `;
+
+addAccessibleTask(
+  snippet2,
+  async function (browser, accDoc) {
+    const target = findAccessibleChildByID(accDoc, "target");
+    ok(
+      !findAccessibleChildByID(target, "child"),
+      "Element having `display: contents` and a child of `content-visibility: hidden` element isn't accessible"
+    );
+    testAccessibleTree(target, { SECTION: [] });
+  },
+  { iframe: true, remoteIframe: true, chrome: true }
+);
diff --git a/accessible/tests/browser/tree/browser_general.js b/accessible/tests/browser/tree/browser_general.js
new file mode 100644
index 0000000000..0d16271a36
--- /dev/null
+++ b/accessible/tests/browser/tree/browser_general.js
@@ -0,0 +1,128 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+/**
+ * Verify adding `overflow:hidden;` styling to a div causes it to
+ * get an accessible.
+ */
+addAccessibleTask(`
            hello world
            `, async function (browser, docAcc) {
+  const originalTree = { DOCUMENT: [{ PARAGRAPH: [{ TEXT_LEAF: [] }] }] };
+
+  testAccessibleTree(docAcc, originalTree);
+  info("Adding div element");
+  await contentSpawnMutation(
+    browser,
+    { unexpected: [[EVENT_REORDER, docAcc]] },
+    function () {
+      const d = content.document.createElement("div");
+      content.document.body.appendChild(d);
+    }
+  );
+
+  testAccessibleTree(docAcc, originalTree);
+  info("Adding overflow:hidden styling to div");
+  await contentSpawnMutation(
+    browser,
+    { expected: [[EVENT_REORDER, docAcc]] },
+    function () {
+      content.document.body.lastElementChild.setAttribute(
+        "style",
+        "overflow:hidden;"
+      );
+    }
+  );
+
+  testAccessibleTree(docAcc, {
+    DOCUMENT: [{ PARAGRAPH: [{ TEXT_LEAF: [] }] }, { TEXT_CONTAINER: [] }],
+  });
+});
+
+/**
+ * Verify adding `overflow:scroll;` styling to a div causes
+ * it to  get an accessible.
+ */
+addAccessibleTask(`
            hello world
            `, async function (browser, docAcc) {
+  const originalTree = { DOCUMENT: [{ PARAGRAPH: [{ TEXT_LEAF: [] }] }] };
+
+  testAccessibleTree(docAcc, originalTree);
+  info("Adding div element");
+  await contentSpawnMutation(
+    browser,
+    { unexpected: [[EVENT_REORDER, docAcc]] },
+    function () {
+      const d = content.document.createElement("div");
+      content.document.body.appendChild(d);
+    }
+  );
+
+  testAccessibleTree(docAcc, originalTree);
+  info("Adding overflow:scroll styling to div");
+  await contentSpawnMutation(
+    browser,
+    { expected: [[EVENT_REORDER, docAcc]] },
+    function () {
+      content.document.body.lastElementChild.setAttribute(
+        "style",
+        "overflow:scroll;"
+      );
+    }
+  );
+
+  testAccessibleTree(docAcc, {
+    DOCUMENT: [{ PARAGRAPH: [{ TEXT_LEAF: [] }] }, { TEXT_CONTAINER: [] }],
+  });
+});
+
+/**
+ * Verify adding `overflow:auto;` styling to a div causes
+ * it to get an accessible, but `overflow:visible` does not.
+ */
+addAccessibleTask(`
            hello world
            `, async function (browser, docAcc) {
+  const originalTree = { DOCUMENT: [{ PARAGRAPH: [{ TEXT_LEAF: [] }] }] };
+
+  testAccessibleTree(docAcc, originalTree);
+  info("Adding div element");
+  await contentSpawnMutation(
+    browser,
+    { unexpected: [[EVENT_REORDER, docAcc]] },
+    function () {
+      const d = content.document.createElement("div");
+      content.document.body.appendChild(d);
+    }
+  );
+
+  testAccessibleTree(docAcc, originalTree);
+  info("Adding overflow:visible styling to div");
+  await contentSpawnMutation(
+    browser,
+    { unexpected: [[EVENT_REORDER, docAcc]] },
+    function () {
+      content.document.body.lastElementChild.setAttribute(
+        "style",
+        "overflow:visible;"
+      );
+    }
+  );
+
+  testAccessibleTree(docAcc, originalTree);
+  info("Adding overflow:auto styling to div");
+  await contentSpawnMutation(
+    browser,
+    { expected: [[EVENT_REORDER, docAcc]] },
+    function () {
+      content.document.body.lastElementChild.setAttribute(
+        "style",
+        "overflow:auto;"
+      );
+    }
+  );
+
+  testAccessibleTree(docAcc, {
+    DOCUMENT: [{ PARAGRAPH: [{ TEXT_LEAF: [] }] }, { TEXT_CONTAINER: [] }],
+  });
+});
diff --git a/accessible/tests/browser/tree/browser_lazy_tabs.js b/accessible/tests/browser/tree/browser_lazy_tabs.js
new file mode 100644
index 0000000000..f7aa9bdeb2
--- /dev/null
+++ b/accessible/tests/browser/tree/browser_lazy_tabs.js
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that lazy background tabs aren't unintentionally loaded when building
+// the a11y tree (bug 1700708).
+addAccessibleTask(``, async function (browser, accDoc) {
+  await SpecialPowers.pushPrefEnv({
+    set: [["browser.sessionstore.restore_on_demand", true]],
+  });
+
+  info("Opening a new window");
+  let win = await BrowserTestUtils.openNewBrowserWindow();
+  // Window is opened with a blank tab.
+  info("Loading second tab");
+  await BrowserTestUtils.openNewForegroundTab({
+    gBrowser: win.gBrowser,
+    url: "data:text/html,2",
+  });
+  info("Loading third tab");
+  await BrowserTestUtils.openNewForegroundTab({
+    gBrowser: win.gBrowser,
+    url: "data:text/html,3",
+  });
+  info("Closing the window");
+  await BrowserTestUtils.closeWindow(win);
+
+  is(SessionStore.getClosedWindowCount(), 1, "Should have a window to restore");
+  info("Restoring the window");
+  win = SessionStore.undoCloseWindow(0);
+  await BrowserTestUtils.waitForEvent(win, "SSWindowStateReady");
+  await BrowserTestUtils.waitForEvent(
+    win.gBrowser.tabContainer,
+    "SSTabRestored"
+  );
+  is(win.gBrowser.tabs.length, 3, "3 tabs restored");
+  ok(win.gBrowser.tabs[2].selected, "Third tab selected");
+  ok(getAccessible(win.gBrowser.tabs[1]), "Second tab has accessible");
+  ok(!win.gBrowser.browsers[1].isConnected, "Second tab is lazy");
+  info("Closing the restored window");
+  await BrowserTestUtils.closeWindow(win);
+});
diff --git a/accessible/tests/browser/tree/browser_searchbar.js b/accessible/tests/browser/tree/browser_searchbar.js
new file mode 100644
index 0000000000..ef68307b91
--- /dev/null
+++ b/accessible/tests/browser/tree/browser_searchbar.js
@@ -0,0 +1,84 @@
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+// eslint-disable-next-line camelcase
+add_task(async function test_searchbar_a11y_tree() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["browser.search.widget.inNavBar", true]],
+  });
+
+  // This used to rely on the implied 100ms initial timer of
+  // TestUtils.waitForCondition. See bug 1700735.
+  // eslint-disable-next-line mozilla/no-arbitrary-setTimeout
+  await new Promise(resolve => setTimeout(resolve, 100));
+  let searchbar = await TestUtils.waitForCondition(
+    () => document.getElementById("searchbar"),
+    "wait for search bar to appear"
+  );
+
+  // Make sure the popup has been rendered so it shows up in the a11y tree.
+  let popup = document.getElementById("PopupSearchAutoComplete");
+  let promise = Promise.all([
+    BrowserTestUtils.waitForEvent(popup, "popupshown", false),
+    waitForEvent(EVENT_SHOW, popup),
+  ]);
+  searchbar.textbox.openPopup();
+  await promise;
+
+  let TREE = {
+    role: ROLE_EDITCOMBOBOX,
+
+    children: [
+      // input element
+      {
+        role: ROLE_ENTRY,
+        children: [],
+      },
+
+      // context menu
+      {
+        role: ROLE_COMBOBOX_LIST,
+        children: [],
+      },
+
+      // result list
+      {
+        role: ROLE_GROUPING,
+        // not testing the structure inside the result list
+      },
+    ],
+  };
+
+  testAccessibleTree(searchbar, TREE);
+
+  promise = Promise.all([
+    BrowserTestUtils.waitForEvent(popup, "popuphidden", false),
+    waitForEvent(EVENT_HIDE, popup),
+  ]);
+  searchbar.textbox.closePopup();
+  await promise;
+
+  TREE = {
+    role: ROLE_EDITCOMBOBOX,
+
+    children: [
+      // input element
+      {
+        role: ROLE_ENTRY,
+        children: [],
+      },
+
+      // context menu
+      {
+        role: ROLE_COMBOBOX_LIST,
+        children: [],
+      },
+
+      // the result list should be removed from the tree on popuphidden
+    ],
+  };
+
+  testAccessibleTree(searchbar, TREE);
+});
diff --git a/accessible/tests/browser/tree/browser_shadowdom.js b/accessible/tests/browser/tree/browser_shadowdom.js
new file mode 100644
index 0000000000..6d9f06f9ff
--- /dev/null
+++ b/accessible/tests/browser/tree/browser_shadowdom.js
@@ -0,0 +1,98 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const REORDER = { expected: [[EVENT_REORDER, "container"]] };
+
+// Dynamically inserted slotted accessible elements should be in
+// the accessible tree.
+const snippet = `
+
+
+`;
+
+addAccessibleTask(snippet, async function (browser, accDoc) {
+  let container = findAccessibleChildByID(accDoc, "container");
+
+  testChildrenIds(container, ["l1"]);
+
+  await contentSpawnMutation(browser, REORDER, function () {
+    let labelEl = content.document.createElement("label");
+    labelEl.id = "l2";
+
+    let containerEl = content.document.getElementById("container");
+    containerEl.appendChild(labelEl);
+  });
+
+  testChildrenIds(container, ["l1", "l2"]);
+});
+
+// Dynamically inserted not accessible custom element containing an accessible
+// in its shadow DOM.
+const snippet2 = `
+
+
            
+`;
+
+addAccessibleTask(snippet2, async function (browser, accDoc) {
+  let container = findAccessibleChildByID(accDoc, "container");
+
+  await contentSpawnMutation(browser, REORDER, function () {
+    content.document.getElementById("container").innerHTML = "";
+  });
+
+  testChildrenIds(container, ["input"]);
+});
+
+/**
+ * Ensure that changing the slot on the body while moving the body doesn't
+ * try to remove the DocAccessible. We test this here instead of in
+ * accessible/tests/mochitest/treeupdate/test_shadow_slots.html because this
+ * messes with the body element and we don't want that to impact other tests.
+ */
+addAccessibleTask(
+  `
+
            
+
+  `,
+  async function (browser, docAcc) {
+    info("Moving body and setting slot on body");
+    let reordered = waitForEvent(EVENT_REORDER, docAcc);
+    await invokeContentTask(browser, [], () => {
+      const host = content.document.getElementById("host");
+      const emptyScript = content.document.getElementById("emptyScript");
+      const body = content.document.body;
+      emptyScript.append(host);
+      host.append(body);
+      body.slot = "";
+    });
+    await reordered;
+    is(docAcc.childCount, 0, "document has no children after body move");
+  },
+  { chrome: true, topLevel: true, iframe: true, remoteIframe: true }
+);
diff --git a/accessible/tests/browser/tree/browser_test_nsIAccessibleDocument_URL.js b/accessible/tests/browser/tree/browser_test_nsIAccessibleDocument_URL.js
new file mode 100644
index 0000000000..623f2640f0
--- /dev/null
+++ b/accessible/tests/browser/tree/browser_test_nsIAccessibleDocument_URL.js
@@ -0,0 +1,54 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+async function promiseEventDocumentLoadComplete(expectedURL) {
+  return new Promise(resolve => {
+    waitForEvent(EVENT_DOCUMENT_LOAD_COMPLETE, event => {
+      try {
+        if (
+          event.accessible.QueryInterface(nsIAccessibleDocument).URL ==
+          expectedURL
+        ) {
+          resolve(event.accessible.QueryInterface(nsIAccessibleDocument));
+          return true;
+        }
+        return false;
+      } catch (e) {
+        return false;
+      }
+    });
+  });
+}
+
+add_task(async function testInDataURI() {
+  const kURL = "data:text/html,Some text";
+  const waitForDocumentLoadComplete = promiseEventDocumentLoadComplete("");
+  await BrowserTestUtils.withNewTab(kURL, async browser => {
+    is(
+      (await waitForDocumentLoadComplete).URL,
+      "",
+      "nsIAccessibleDocument.URL shouldn't return data URI"
+    );
+  });
+});
+
+add_task(async function testInHTTPSURIContainingPrivateThings() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["network.auth.confirmAuth.enabled", false]],
+  });
+  const kURL =
+    "https://username:password@example.com/browser/toolkit/content/tests/browser/file_empty.html?query=some#ref";
+  const kURLWithoutUserPass =
+    "https://example.com/browser/toolkit/content/tests/browser/file_empty.html?query=some#ref";
+  const waitForDocumentLoadComplete =
+    promiseEventDocumentLoadComplete(kURLWithoutUserPass);
+  await BrowserTestUtils.withNewTab(kURL, async browser => {
+    is(
+      (await waitForDocumentLoadComplete).URL,
+      kURLWithoutUserPass,
+      "nsIAccessibleDocument.URL shouldn't contain user/pass section"
+    );
+  });
+});
diff --git a/accessible/tests/browser/tree/head.js b/accessible/tests/browser/tree/head.js
new file mode 100644
index 0000000000..b9c787e9e2
--- /dev/null
+++ b/accessible/tests/browser/tree/head.js
@@ -0,0 +1,33 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* exported testChildrenIds */
+
+// Load the shared-head file first.
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js",
+  this
+);
+
+// Loading and common.js from accessible/tests/mochitest/ for all tests, as
+// well as promisified-events.js.
+loadScripts(
+  { name: "common.js", dir: MOCHITESTS_DIR },
+  { name: "promisified-events.js", dir: MOCHITESTS_DIR }
+);
+
+/*
+ * A test function for comparing the IDs of an accessible's children
+ * with an expected array of IDs.
+ */
+function testChildrenIds(acc, expectedIds) {
+  let ids = arrayFromChildren(acc).map(child => getAccessibleDOMNodeID(child));
+  Assert.deepEqual(
+    ids,
+    expectedIds,
+    `Children for ${getAccessibleDOMNodeID(acc)} are wrong.`
+  );
+}
-- 
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