mozilla-central/dom/ipc/tests/test_child_docshell.js (file symbol)

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Test Info: Warnings

"use strict";
const { XPCShellContentUtils } = ChromeUtils.importESModule(
);
XPCShellContentUtils.init(this);
add_task(async function test() {
let page = await XPCShellContentUtils.loadContentPage("about:blank", {
remote: true,
});
await new Promise(resolve => {
let mm = page.browser.messageManager;
mm.addMessageListener("chromeEventHandler", function (msg) {
var result = msg.json;
equal(
result.processType,
Ci.nsIXULRuntime.PROCESS_TYPE_CONTENT,
"The frame script is running in a real distinct child process"
);
ok(
result.hasCorrectInterface,
"docshell.chromeEventHandler has EventTarget interface"
);
});
mm.addMessageListener("DOMWindowCreatedReceived", function (msg) {
ok(true, "the chrome event handler looks functional");
var result = msg.json;
ok(
result.stableChromeEventHandler,
"docShell.chromeEventHandler is stable"
);
ok(result.iframeHasNewDocShell, "iframe spawns a new docShell");
ok(
result.iframeHasSameChromeEventHandler,
"but iframe has the same chrome event handler"
);
resolve();
});
// Inject a frame script in the child process:
page.loadFrameScript(async function () {
/* eslint-env mozilla/frame-script */
var chromeEventHandler = docShell.chromeEventHandler;
sendAsyncMessage("chromeEventHandler", {
processType: Services.appinfo.processType,
hasCorrectInterface:
chromeEventHandler && EventTarget.isInstance(chromeEventHandler),
});
/*
Ensure that this chromeEventHandler actually works,
by creating a new window and listening for its DOMWindowCreated event
*/
chromeEventHandler.addEventListener(
"DOMWindowCreated",
function listener(evt) {
if (evt.target == content.document) {
return;
}
chromeEventHandler.removeEventListener("DOMWindowCreated", listener);
let new_win = evt.target.defaultView;
let new_docShell = new_win.docShell;
sendAsyncMessage("DOMWindowCreatedReceived", {
stableChromeEventHandler:
chromeEventHandler === docShell.chromeEventHandler,
iframeHasNewDocShell: new_docShell !== docShell,
iframeHasSameChromeEventHandler:
new_docShell.chromeEventHandler === chromeEventHandler,
});
}
);
if (content.document.readyState != "complete") {
await new Promise(res =>
addEventListener("load", res, { once: true, capture: true })
);
}
let iframe = content.document.createElement("iframe");
iframe.setAttribute("src", "data:text/html,foo");
content.document.documentElement.appendChild(iframe);
});
});
await page.close();
});