#![cfg(feature = "serde")]

use serde::Deserialize;

pub fn from_slice<'a, T: Deserialize<'a>>(s: &'a [u8]) -> Result<T, hifijson::serde::Error> {
    hifijson::serde::exactly_one(&mut hifijson::SliceLexer::new(s))
}

#[test]
fn basic() {
    assert_eq!((), from_slice(b"null").unwrap());
    assert_eq!(true, from_slice(b"true").unwrap());
    assert_eq!(false, from_slice(b"false").unwrap());
}

#[test]
fn numbers() {
    assert_eq!(0, from_slice(b"0").unwrap());
    assert_eq!(42, from_slice(b"42").unwrap());
    assert_eq!(3.1415, from_slice(b"3.1415").unwrap());
    assert_eq!(-42, from_slice(b"-42").unwrap());
}

#[test]
fn strings() {
    assert_eq!("asdf", from_slice::<String>(br#""asdf""#).unwrap());
}

#[test]
fn arrays() {
    assert_eq!(Vec::<()>::new(), from_slice::<Vec<_>>(b"[]").unwrap());
    assert_eq!(vec![0], from_slice::<Vec<_>>(b"[0]").unwrap());
    assert_eq!(vec![0, 1], from_slice::<Vec<_>>(b"[0, 1]").unwrap());
    assert_eq!(vec![0, -1], from_slice::<Vec<_>>(b"[0, -1]").unwrap());
    assert_eq!(vec![0.0, 1.0], from_slice::<Vec<_>>(b"[0, 1]").unwrap());
}

#[test]
fn objects() {
    use std::collections::HashMap;
    let a = HashMap::from([("a".to_string(), 1)]);
    let b = HashMap::from([("a".to_string(), 1), ("b".to_string(), 2)]);

    assert_eq!(HashMap::<String, ()>::new(), from_slice(b"{}").unwrap());
    assert_eq!(a, from_slice(br#"{"a": 1}"#).unwrap());
    assert_eq!(b, from_slice(br#"{"a": 1, "b": 2}"#).unwrap());
}