def METHOD_NAME(
    self, app
):
    response = app.get(url_for("home.index"))
    html = BeautifulSoup(response.body)
    select = html.find(id="field-lang-select")
    for option in select.find_all("option"):
        if option["value"] == "/en/":
            assert option["selected"] == "selected"
        else:
            assert not option.has_attr("selected")