#[test]
fn issue500() {
    #[derive(Debug, Deserialize, Serialize, PartialEq)]
    struct TagOne {}

    #[derive(Debug, Deserialize, Serialize, PartialEq)]
    struct TagTwo {}

    #[derive(Debug, Deserialize, Serialize, PartialEq)]
    enum Tag {
        TagOne(TagOne),
        TagTwo(TagTwo),
    }

    #[derive(Debug, Deserialize, Serialize, PartialEq)]
    struct Root {
        #[serde(rename = "$value", default)]
        data: Vec<Tag>,
    }

    let data: Root = from_str("\
        <root>\
            <TagOne></TagOne>\
            <TagTwo></TagTwo>\
            <TagOne></TagOne>\
        </root>\
    ").unwrap();

    assert_eq!(
        data,
        Root {
            data: vec![
                Tag::TagOne(TagOne {}),
                Tag::TagTwo(TagTwo {}),
                Tag::TagOne(TagOne {}),
            ],
        }
    );

    let data: Vec<Tag> = from_str("\
        <TagOne></TagOne>\
        <TagTwo></TagTwo>\
        <TagOne></TagOne>\
    ").unwrap();

    assert_eq!(
        data,
        vec![
            Tag::TagOne(TagOne {}),
            Tag::TagTwo(TagTwo {}),
            Tag::TagOne(TagOne {}),
        ]
    );
}