browser_shortcutkey_ctrlf5_prevent_default.js

Enable keyboard shortcuts

"use strict";

// Tests that web content can suppress the Ctrl+F5 hard reload shortcut by

// calling preventDefault() on the keydown event. See bug 2001938.

add_task(async function ctrl_f5_reloads_without_prevent_default() {

  await BrowserTestUtils.withNewTab(

    { gBrowser, url: "data:text/html,<p>no handler</p>" },

    async browser => {

      await SimpleTest.promiseFocus(browser);

      let loadPromise = BrowserTestUtils.browserLoaded(browser);

      EventUtils.synthesizeKey("KEY_F5", { ctrlKey: true });

      await loadPromise;

ok(

        true,

        "Ctrl+F5 should reload the page when content does not call preventDefault()"

);

);

});

add_task(async function ctrl_f5_does_not_reload_when_prevented() {

  const url =

    "data:text/html,<p>with handler</p>" +

    "<script>window.addEventListener('keydown', e => { if (e.key === 'F5') e.preventDefault(); });</script>";

  await BrowserTestUtils.withNewTab({ gBrowser, url }, async browser => {

    await SimpleTest.promiseFocus(browser);

    let reloaded = false;

    BrowserTestUtils.browserLoaded(browser).then(() => {

      reloaded = true;

});

    EventUtils.synthesizeKey("KEY_F5", { ctrlKey: true });

    // Wait briefly to confirm no reload occurs.

    // eslint-disable-next-line mozilla/no-arbitrary-setTimeout

    await new Promise(resolve => setTimeout(resolve, 1500));

ok(

      !reloaded,

      "Ctrl+F5 should not reload the page when content calls preventDefault()"

);

});

});