extern crate indexmap;
extern crate itertools;
#[macro_use]
extern crate quickcheck;
extern crate fnv;
use indexmap::IndexMap;
use itertools::Itertools;
use quickcheck::Arbitrary;
use quickcheck::Gen;
use fnv::FnvHasher;
use std::hash::{BuildHasher, BuildHasherDefault};
type FnvBuilder = BuildHasherDefault<FnvHasher>;
type OrderMapFnv<K, V> = IndexMap<K, V, FnvBuilder>;
use std::collections::HashSet;
use std::collections::HashMap;
use std::iter::FromIterator;
use std::hash::Hash;
use std::fmt::Debug;
use std::ops::Deref;
use std::cmp::min;
use indexmap::map::Entry as OEntry;
use std::collections::hash_map::Entry as HEntry;
fn set<'a, T: 'a, I>(iter: I) -> HashSet<T>
where I: IntoIterator<Item=&'a T>,
T: Copy + Hash + Eq
{
iter.into_iter().cloned().collect()
}
fn indexmap<'a, T: 'a, I>(iter: I) -> IndexMap<T, ()>
where I: IntoIterator<Item=&'a T>,
T: Copy + Hash + Eq,
{
IndexMap::from_iter(iter.into_iter().cloned().map(|k| (k, ())))
}
quickcheck! {
fn contains(insert: Vec<u32>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
insert.iter().all(|&key| map.get(&key).is_some())
}
fn contains_not(insert: Vec<u8>, not: Vec<u8>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
let nots = &set(¬) - &set(&insert);
nots.iter().all(|&key| map.get(&key).is_none())
}
fn insert_remove(insert: Vec<u8>, remove: Vec<u8>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
for &key in &remove {
map.swap_remove(&key);
}
let elements = &set(&insert) - &set(&remove);
map.len() == elements.len() && map.iter().count() == elements.len() &&
elements.iter().all(|k| map.get(k).is_some())
}
fn insertion_order(insert: Vec<u32>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
itertools::assert_equal(insert.iter().unique(), map.keys());
true
}
fn pop(insert: Vec<u8>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
let mut pops = Vec::new();
while let Some((key, _v)) = map.pop() {
pops.push(key);
}
pops.reverse();
itertools::assert_equal(insert.iter().unique(), &pops);
true
}
fn with_cap(cap: usize) -> bool {
let map: IndexMap<u8, u8> = IndexMap::with_capacity(cap);
println!("wish: {}, got: {} (diff: {})", cap, map.capacity(), map.capacity() as isize - cap as isize);
map.capacity() >= cap
}
fn drain(insert: Vec<u8>) -> bool {
let mut map = IndexMap::new();
for &key in &insert {
map.insert(key, ());
}
let mut clone = map.clone();
let drained = clone.drain(..);
for (key, _) in drained {
map.remove(&key);
}
map.is_empty()
}
}
use Op::*;
#[derive(Copy, Clone, Debug)]
enum Op<K, V> {
Add(K, V),
Remove(K),
AddEntry(K, V),
RemoveEntry(K),
}
impl<K, V> Arbitrary for Op<K, V>
where K: Arbitrary,
V: Arbitrary,
{
fn arbitrary<G: Gen>(g: &mut G) -> Self {
match g.gen::<u32>() % 4 {
0 => Add(K::arbitrary(g), V::arbitrary(g)),
1 => AddEntry(K::arbitrary(g), V::arbitrary(g)),
2 => Remove(K::arbitrary(g)),
_ => RemoveEntry(K::arbitrary(g)),
}
}
}
fn do_ops<K, V, S>(ops: &[Op<K, V>], a: &mut IndexMap<K, V, S>, b: &mut HashMap<K, V>)
where K: Hash + Eq + Clone,
V: Clone,
S: BuildHasher,
{
for op in ops {
match *op {
Add(ref k, ref v) => {
a.insert(k.clone(), v.clone());
b.insert(k.clone(), v.clone());
}
AddEntry(ref k, ref v) => {
a.entry(k.clone()).or_insert(v.clone());
b.entry(k.clone()).or_insert(v.clone());
}
Remove(ref k) => {
a.swap_remove(k);
b.remove(k);
}
RemoveEntry(ref k) => {
match a.entry(k.clone()) {
OEntry::Occupied(ent) => { ent.remove_entry(); },
_ => { }
}
match b.entry(k.clone()) {
HEntry::Occupied(ent) => { ent.remove_entry(); },
_ => { }
}
}
}
}
}
fn assert_maps_equivalent<K, V>(a: &IndexMap<K, V>, b: &HashMap<K, V>) -> bool
where K: Hash + Eq + Debug,
V: Eq + Debug,
{
assert_eq!(a.len(), b.len());
assert_eq!(a.iter().next().is_some(), b.iter().next().is_some());
for key in a.keys() {
assert!(b.contains_key(key), "b does not contain {:?}", key);
}
for key in b.keys() {
assert!(a.get(key).is_some(), "a does not contain {:?}", key);
}
for key in a.keys() {
assert_eq!(a[key], b[key]);
}
true
}
quickcheck! {
fn operations_i8(ops: Large<Vec<Op<i8, i8>>>) -> bool {
let mut map = IndexMap::new();
let mut reference = HashMap::new();
do_ops(&ops, &mut map, &mut reference);
assert_maps_equivalent(&map, &reference)
}
fn operations_string(ops: Vec<Op<Alpha, i8>>) -> bool {
let mut map = IndexMap::new();
let mut reference = HashMap::new();
do_ops(&ops, &mut map, &mut reference);
assert_maps_equivalent(&map, &reference)
}
fn keys_values(ops: Large<Vec<Op<i8, i8>>>) -> bool {
let mut map = IndexMap::new();
let mut reference = HashMap::new();
do_ops(&ops, &mut map, &mut reference);
let mut visit = IndexMap::new();
for (k, v) in map.keys().zip(map.values()) {
assert_eq!(&map[k], v);
assert!(!visit.contains_key(k));
visit.insert(*k, *v);
}
assert_eq!(visit.len(), reference.len());
true
}
fn keys_values_mut(ops: Large<Vec<Op<i8, i8>>>) -> bool {
let mut map = IndexMap::new();
let mut reference = HashMap::new();
do_ops(&ops, &mut map, &mut reference);
let mut visit = IndexMap::new();
let keys = Vec::from_iter(map.keys().cloned());
for (k, v) in keys.iter().zip(map.values_mut()) {
assert_eq!(&reference[k], v);
assert!(!visit.contains_key(k));
visit.insert(*k, *v);
}
assert_eq!(visit.len(), reference.len());
true
}
fn equality(ops1: Vec<Op<i8, i8>>, removes: Vec<usize>) -> bool {
let mut map = IndexMap::new();
let mut reference = HashMap::new();
do_ops(&ops1, &mut map, &mut reference);
let mut ops2 = ops1.clone();
for &r in &removes {
if !ops2.is_empty() {
let i = r % ops2.len();
ops2.remove(i);
}
}
let mut map2 = OrderMapFnv::default();
let mut reference2 = HashMap::new();
do_ops(&ops2, &mut map2, &mut reference2);
assert_eq!(map == map2, reference == reference2);
true
}
fn retain_ordered(keys: Large<Vec<i8>>, remove: Large<Vec<i8>>) -> () {
let mut map = indexmap(keys.iter());
let initial_map = map.clone(); let remove_map = indexmap(remove.iter());
let keys_s = set(keys.iter());
let remove_s = set(remove.iter());
let answer = &keys_s - &remove_s;
map.retain(|k, _| !remove_map.contains_key(k));
assert_eq!(map.len(), answer.len());
for key in &answer {
assert!(map.contains_key(key));
}
itertools::assert_equal(map.keys(), initial_map.keys().filter(|&k| !remove_map.contains_key(k)));
}
fn sort_1(keyvals: Large<Vec<(i8, i8)>>) -> () {
let mut map: IndexMap<_, _> = IndexMap::from_iter(keyvals.to_vec());
let mut answer = keyvals.0;
answer.sort_by_key(|t| t.0);
answer.reverse();
answer.dedup_by_key(|t| t.0);
answer.reverse();
map.sort_by(|k1, _, k2, _| Ord::cmp(k1, k2));
for &(key, val) in &answer {
assert_eq!(map[&key], val);
}
let mapv = Vec::from_iter(map);
assert_eq!(answer, mapv);
}
fn sort_2(keyvals: Large<Vec<(i8, i8)>>) -> () {
let mut map: IndexMap<_, _> = IndexMap::from_iter(keyvals.to_vec());
map.sort_by(|_, v1, _, v2| Ord::cmp(v1, v2));
assert_sorted_by_key(map, |t| t.1);
}
}
fn assert_sorted_by_key<I, Key, X>(iterable: I, key: Key)
where I: IntoIterator,
I::Item: Ord + Clone + Debug,
Key: Fn(&I::Item) -> X,
X: Ord,
{
let input = Vec::from_iter(iterable);
let mut sorted = input.clone();
sorted.sort_by_key(key);
assert_eq!(input, sorted);
}
#[derive(Clone, Debug, Hash, PartialEq, Eq)]
struct Alpha(String);
impl Deref for Alpha {
type Target = String;
fn deref(&self) -> &String { &self.0 }
}
const ALPHABET: &'static [u8] = b"abcdefghijklmnopqrstuvwxyz";
impl Arbitrary for Alpha {
fn arbitrary<G: Gen>(g: &mut G) -> Self {
let len = g.next_u32() % g.size() as u32;
let len = min(len, 16);
Alpha((0..len).map(|_| {
ALPHABET[g.next_u32() as usize % ALPHABET.len()] as char
}).collect())
}
fn shrink(&self) -> Box<Iterator<Item=Self>> {
Box::new((**self).shrink().map(Alpha))
}
}
#[derive(Clone, Debug)]
struct Large<T>(T);
impl<T> Deref for Large<T> {
type Target = T;
fn deref(&self) -> &T { &self.0 }
}
impl<T> Arbitrary for Large<Vec<T>>
where T: Arbitrary
{
fn arbitrary<G: Gen>(g: &mut G) -> Self {
let len = g.next_u32() % (g.size() * 10) as u32;
Large((0..len).map(|_| T::arbitrary(g)).collect())
}
fn shrink(&self) -> Box<Iterator<Item=Self>> {
Box::new((**self).shrink().map(Large))
}
}