linked-hash-map 0.5.1

A HashMap wrapper that holds key-value pairs in insertion order
Documentation
#![cfg(feature = "serde_impl")]

extern crate linked_hash_map;
use linked_hash_map::LinkedHashMap;

extern crate serde_test;
use serde_test::{Token, assert_tokens};

#[test]
fn test_ser_de_empty() {
    let map = LinkedHashMap::<char, u32>::new();

    assert_tokens(&map, &[
        Token::Map { len: Some(0) },
        Token::MapEnd,
    ]);
}

#[test]
fn test_ser_de() {
    let mut map = LinkedHashMap::new();
    map.insert('b', 20);
    map.insert('a', 10);
    map.insert('c', 30);

    assert_tokens(&map, &[
        Token::Map { len: Some(3) },
            Token::Char('b'),
            Token::I32(20),

            Token::Char('a'),
            Token::I32(10),

            Token::Char('c'),
            Token::I32(30),
        Token::MapEnd,
    ]);
}