The Tor Browser: toolkit/components/thumbnails/test/browser_thumbnails_bg_no_cookies

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* Any copyright is dedicated to the Public Domain.

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

     4 function runTests() {

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

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

     7   let tab = gBrowser.loadOneTab(url, { inBackground: false });

     8   let browser = tab.linkedBrowser;

     9   yield whenLoaded(browser);

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

    12   let greenStr = "rgb(0, 255, 0)";

    13   isnot(browser.contentDocument.documentElement.style.backgroundColor,

    14         greenStr,

    15         "The page shouldn't be green yet.");

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

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

    19   browser.reload();

    20   yield whenLoaded(browser);

    21   is(browser.contentDocument.documentElement.style.backgroundColor,

    22      greenStr,

    23      "The page should be green now.");

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

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

    27   yield bgCapture(url);

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

    30   retrieveImageDataForURL(url, function ([r, g, b]) {

    31     isnot([r, g, b].toString(), [0, 255, 0].toString(),

    32           "The captured page should not be green.");

    33     gBrowser.removeTab(tab);

    34     removeThumbnail(url);

    35     next();

    36   });

    37   yield true;

    38 }

The Tor Browser / file revision