use rustbot::json::Json;

#[test]
fn parses_object_and_navigates() {
    let j = Json::parse(r#"{"a":"x","b":{"c":42}}"#).unwrap();
    assert_eq!(j.get("a").and_then(Json::as_str), Some("x"));
    assert_eq!(
        j.get("b").and_then(|v| v.get("c")).and_then(Json::as_f64),
        Some(42.0)
    );
    assert!(j.get("missing").is_none());
}

#[test]
fn parses_nested_arrays() {
    let j = Json::parse(r#"["q",["t1","t2"],[""],["u1"]]"#).unwrap();
    assert_eq!(j.idx(0).and_then(Json::as_str), Some("q"));
    assert_eq!(
        j.idx(1).and_then(|v| v.idx(1)).and_then(Json::as_str),
        Some("t2")
    );
}

#[test]
fn parses_scalars_and_escapes() {
    assert_eq!(Json::parse("true"), Some(Json::Bool(true)));
    assert_eq!(Json::parse("null"), Some(Json::Null));
    assert_eq!(Json::parse("-3.5e2").and_then(|j| j.as_f64()), Some(-350.0));
    let s = Json::parse(r#""a\"bé""#).unwrap();
    assert_eq!(s.as_str(), Some("a\"bé"));
}

#[test]
fn rejects_garbage() {
    assert!(Json::parse("{oops").is_none());
    assert!(Json::parse("").is_none());
    assert!(Json::parse("[1,2").is_none());
}