Source code
Revision control
Copy as Markdown
Other Tools
Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Testing that the inspector doesn't go blank when navigating to a page that
// deletes an iframe while loading.
const TEST_URL = URL_ROOT + "doc_inspector_remove-iframe-during-load.html";
add_task(async function () {
const { inspector, tab } = await openInspectorForURL("about:blank");
await selectNode("body", inspector);
// Before we start navigating, attach a listener on the reloaded event.
const onInspectorReloaded = inspector.once("reloaded");
// Note: here we don't want to use the `navigateTo` helper from shared-head.js
// because we want to modify the page as early as possible after the
// navigation, ideally before the inspector has fully initialized.
// See next comments.
const browser = tab.linkedBrowser;
const onBrowserLoaded = BrowserTestUtils.browserLoaded(browser);
BrowserTestUtils.startLoadingURIString(browser, TEST_URL);
await onBrowserLoaded;
// We do not want to wait for the inspector to be fully ready before testing
// so we load TEST_URL and just wait for the content window to be done loading
await SpecialPowers.spawn(browser, [], async function () {
await content.wrappedJSObject.readyPromise;
});
// The content doc contains a script that creates iframes and deletes them
// immediately after. It does this before the load event, after
// DOMContentLoaded and after load. This is what used to make the inspector go
// blank when navigating to that page.
// At this stage, there should be no iframes in the page anymore.
ok(
!(await contentPageHasNode(browser, "iframe")),
"Iframes added by the content page should have been removed"
);
// Create/remove an extra one now, after the load event.
info("Creating and removing an iframe.");
await SpecialPowers.spawn(browser, [], async function () {
const iframe = content.document.createElement("iframe");
content.document.body.appendChild(iframe);
iframe.remove();
});
ok(
!(await contentPageHasNode(browser, "iframe")),
"The after-load iframe should have been removed."
);
// Assert that the markup-view is displayed and works
ok(!(await contentPageHasNode(browser, "iframe")), "Iframe has been removed");
const expectedText = await SpecialPowers.spawn(
browser,
[],
async function () {
return content.document.querySelector("#yay").textContent;
}
);
is(expectedText, "load", "Load event fired.");
info("Wait for the inspector to be properly reloaded");
await onInspectorReloaded;
// Smoke test to check that the inspector can still select nodes and hasn't
// gone blank.
await selectNode("#yay", inspector);
});
function contentPageHasNode(browser, selector) {
return SpecialPowers.spawn(
browser,
[selector],
async function (selectorChild) {
return !!content.document.querySelector(selectorChild);
}
);
}