browser_meta_tags.js

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/* Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/publicdomain/zero/1.0/

*/

const TEST_PATH =

  getRootDirectory(gTestPath).replace(

    "chrome://mochitests/content",

    "https://example.com"

  ) + "meta_tags.html";

/**

 * This tests that with the page meta_tags.html, ContentMetaHandler.sys.mjs

 * parses out the meta tags avilable and only stores the best one for description

 * and one for preview image url. In the case of this test, the best defined meta

 * tags are "og:description" and "og:image:secure_url". The list of meta tags

 * and order of preference is found in ContentMetaHandler.sys.mjs.

*/

add_task(async function test_metadata() {

  const tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, TEST_PATH);

  // Wait until places has stored the page info

  const pageInfo = await waitForPageInfo(TEST_PATH);

  is(pageInfo.description, "og:description", "got the correct description");

is(

    pageInfo.previewImageURL.href,

    "https://test.com/og-image-secure-url.jpg",

    "got the correct preview image"

);

  BrowserTestUtils.removeTab(tab);

  await PlacesUtils.history.clear();

});

/**

 * This test is almost like the previous one except it opens a second tab to

 * make sure the extra tab does not cause the debounce logic to be skipped. If

 * incorrectly skipped, the updated metadata would not include the delayed meta.

*/

add_task(async function multiple_tabs() {

  const tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, TEST_PATH);

  // Add a background tab to cause another page to load *without* putting the

  // desired URL in a background tab, which results in its timers being throttled.

  BrowserTestUtils.addTab(gBrowser);

  // Wait until places has stored the page info

  const pageInfo = await waitForPageInfo(TEST_PATH);

  is(pageInfo.description, "og:description", "got the correct description");

is(

    pageInfo.previewImageURL.href,

    "https://test.com/og-image-secure-url.jpg",

    "got the correct preview image"

);

  BrowserTestUtils.removeTab(tab);

  BrowserTestUtils.removeTab(gBrowser.selectedTab);

  await PlacesUtils.history.clear();

});