gecko/toolkit/content/tests/browser/browser_default_image_filename.js

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

var MockFilePicker = SpecialPowers.MockFilePicker;
MockFilePicker.init(window);

/**
 * TestCase for bug 564387
 * <https://bugzilla.mozilla.org/show_bug.cgi?id=564387>
 */
function test() {
  waitForExplicitFinish();
  var fileName;

  gBrowser.loadURI("data:image/gif;base64,R0lGODlhEAAOALMAAOazToeHh0tLS/7LZv/0jvb29t/f3//Ub//ge8WSLf/rhf/3kdbW1mxsbP//mf///yH5BAAAAAAALAAAAAAQAA4AAARe8L1Ekyky67QZ1hLnjM5UUde0ECwLJoExKcppV0aCcGCmTIHEIUEqjgaORCMxIC6e0CcguWw6aFjsVMkkIr7g77ZKPJjPZqIyd7sJAgVGoEGv2xsBxqNgYPj/gAwXEQA7");

  registerCleanupFunction(function () {
    gBrowser.addTab().linkedBrowser.stop();
    gBrowser.removeCurrentTab();
  });

  gBrowser.addEventListener("pageshow", function pageShown(event) {
    if (event.target.location == "about:blank")
      return;
    gBrowser.removeEventListener("pageshow", pageShown);

    executeSoon(function () {
      document.addEventListener("popupshown", contextMenuOpened);

      var img = gBrowser.contentDocument.getElementsByClassName("decoded")[0];
      EventUtils.synthesizeMouseAtCenter(img,
                                         { type: "contextmenu", button: 2 },
                                         gBrowser.contentWindow);
    });
  });

  function contextMenuOpened(event) {
    event.currentTarget.removeEventListener("popupshown", contextMenuOpened);

    MockFilePicker.showCallback = function(fp) {
      is(fp.defaultString, "index.gif");
      executeSoon(finish);
    };

    registerCleanupFunction(function () {
      MockFilePicker.cleanup();
    });

    // Select "Save Image As" option from context menu
    var saveImageAsCommand = document.getElementById("context-saveimage");
    saveImageAsCommand.doCommand();

    event.target.hidePopup();
  }
}