def test_iadd(self, evt):
        rval = event.ReturnValue(append_events=[evt])
        rval2 = event.ReturnValue(eat=True, append_events=[evt])
        rset = event.ResultSet()

        rset += rval
        rset += rval2
        rset += None
        assert rset.eat
        assert rset.append_events == [evt, evt]
def add_category():
    form = CategoryForm()

    if form.validate_on_submit():
        form.save()
        flash(_("Category added."), "success")
        return redirect(url_for("management.forums"))

    return render_template("management/category_form.html", form=form,
                           title=_("Add Category"))