gecko-dev/docshell/test/browser/browser_bug655270.js

/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

/**
 * Test for Bug 655273
 *
 * Call pushState and then make sure that the favicon service associates our
 * old favicon with the new URI.
 */

function test() {
  const testDir = "http://mochi.test:8888/browser/docshell/test/browser/";
  const origURL = testDir + "file_bug655270.html";
  const newURL = origURL + "?new_page";

  const faviconURL = testDir + "favicon_bug655270.ico";

  waitForExplicitFinish();

  let tab = BrowserTestUtils.addTab(gBrowser, origURL);

  // The page at origURL has a <link rel='icon'>, so we should get a call into
  // our observer below when it loads.  Once we verify that we have the right
  // favicon URI, we call pushState, which should trigger another onPageChange
  // event, this time for the URI after pushState.

  let observer = {
    onPageChanged(aURI, aWhat, aValue) {
      if (aWhat != Ci.nsINavHistoryObserver.ATTRIBUTE_FAVICON) {
        return;
      }

      if (aURI.spec == origURL) {
        is(aValue, faviconURL, "FaviconURL for original URI");
        // Ignore the promise returned here and wait for the next
        // onPageChanged notification.
        SpecialPowers.spawn(tab.linkedBrowser, [], function() {
          content.history.pushState("", "", "?new_page");
        });
      }

      if (aURI.spec == newURL) {
        is(aValue, faviconURL, "FaviconURL for new URI");
        gBrowser.removeTab(tab);
        PlacesUtils.history.removeObserver(this);
        finish();
      }
    },

    onBeginUpdateBatch() {},
    onEndUpdateBatch() {},
    onTitleChanged() {},
    onDeleteURI() {},
    onClearHistory() {},
    onDeleteVisits() {},
    QueryInterface: ChromeUtils.generateQI([Ci.nsINavHistoryObserver]),
  };

  PlacesUtils.history.addObserver(observer);
}