browser/base/content/test/general/browser_bug380960.js


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function test() {
  var tab = BrowserTestUtils.addTab(gBrowser, "about:blank", {
    skipAnimation: true,
  });
  gBrowser.removeTab(tab);
  is(tab.parentNode, null, "tab removed immediately");

  tab = BrowserTestUtils.addTab(gBrowser, "about:blank", {
    skipAnimation: true,
  });
  gBrowser.removeTab(tab, { animate: true });
  gBrowser.removeTab(tab);
  is(
    tab.parentNode,
    null,
    "tab removed immediately when calling removeTab again after the animation was kicked off"
  );
}