browser_thumbnails_bg_no_cookies_sent.js

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/* Any copyright is dedicated to the Public Domain.

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

add_task(async function thumbnails_bg_no_cookies_sent() {

  // Visit the test page in the browser and tell it to set a cookie.

  let url = bgTestPageURL({ setGreenCookie: true });

  await BrowserTestUtils.withNewTab(

      gBrowser,

      url,

},

    async browser => {

      // The root element of the page shouldn't be green yet.

      await SpecialPowers.spawn(browser, [], function () {

        Assert.notEqual(

          content.document.documentElement.style.backgroundColor,

          "rgb(0, 255, 0)",

          "The page shouldn't be green yet."

);

});

      // Cookie should be set now.  Reload the page to verify.  Its root element

      // will be green if the cookie's set.

      browser.reload();

      await BrowserTestUtils.browserLoaded(browser);

      await SpecialPowers.spawn(browser, [], function () {

        Assert.equal(

          content.document.documentElement.style.backgroundColor,

          "rgb(0, 255, 0)",

          "The page should be green now."

);

});

      // Capture the page.  Get the image data of the capture and verify it's not

      // green.  (Checking only the first pixel suffices.)

      await bgCapture(url);

      ok(thumbnailExists(url), "Thumbnail file should exist after capture.");

      let [r, g, b] = await retrieveImageDataForURL(url);

      isnot(

        [r, g, b].toString(),

        [0, 255, 0].toString(),

        "The captured page should not be green."

);

      removeThumbnail(url);

);

});