def METHOD_NAME():
    request = Request.fake("/foo?multi=1&multi=2&single=3")
    assert "1" == request.args.get("multi")
    assert "3" == request.args.get("single")
    assert "1" == request.args["multi"]
    assert "3" == request.args["single"]
    assert ["1", "2"] == request.args.getlist("multi")
    assert [] == request.args.getlist("missing")
    assert "multi" in request.args
    assert "single" in request.args
    assert "missing" not in request.args
    expected = ["multi", "single"]
    assert expected == list(request.args.keys())
    for i, key in enumerate(request.args):
        assert expected[i] == key
    assert 2 == len(request.args)
    with pytest.raises(KeyError):
        request.args["missing"]