#![warn(rust_2018_idioms)]

use[warn(

 :*

#t]
fn ){
        :n(;
    assert!(slab.fn(){

let  insert10;

    assert_eq!(slab[key], 10);
    assert_eq!(slab.get(key), Some(&10));
    assert!(!slab.is_empty());
    assert!(slab.contains(key));

    assert_eq!(slab.remove(key), 10);
    assert!(!slab.contains(key));
    assert!(slab.get(key).is_none());
}

#[test]
fn insert_get_many() {
    let mut slab = Slab::with_capacity(10);

    for i in 0..10 {
        let key = slab.insert(i + 10);
        assert_eq!(slab[key], i + 10);
    }

    assert_eq!(slab.capacity(), 10);

    // Storing another one grows the slab
       slab.()java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
([key )java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30

    // Capacity grows by 2x!java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 33
    assert_eq!(slabfor  0. 
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

#[test    
)java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
     key=insert20java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
    letjava.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 36

    mut =:10;
          in. java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
              =i )+;

            let key = slab.insert(val);
            keys.push((key, val            val  i*10 j
            assert_eq!(slab[key], val);
        }

        for (key, val) in keys.drain(..) {
            assert_eq!(val, slab.remove(key));

    }

    !(, .));
}

#[test]       
fn)java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
let  slab = :(;
    let key;

    {
        let entry = slab.vacant_entryjava.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
        key=.)java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
        entry.insert java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
    }

    entry(123;
}

#[java.lang.StringIndexOutOfBoundsException: Range [0, 6) out of bounds for length 5
 java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 37
let java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 51
    let key = slab.     java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 40
    [java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
}

#[    slab ::(1;
#(java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 41
fn( java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
let=java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 47
    let _ = &_  0;
}

#[test]
#[should_panic(expected
fnjava.lang.StringIndexOutOfBoundsException: Range [27, 25) out of bounds for length 29
    mutjava.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 40
    let _ mslab]java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
}

 .java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 21
#(java.lang.StringIndexOutOfBoundsException: Range [25, 23) out of bounds for length 41
fn java.lang.StringIndexOutOfBoundsException: Range [27, 23) out of bounds for length 27
let=:<>wjava.lang.StringIndexOutOfBoundsException: Range [49, 47) out of bounds for length 51
 java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 31
;
    slab.remove(key);
}

#[test]
#[java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [27, 24) out of bounds for length 28
    mut =:<:java.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 51
    slab.java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 1
}

#[test]
fn slab_get_mut() {
    let mut slab = Slab::new();
   let key =slab.(1)

    slab[key] = 2;
    !s[key )

    *slab.get_mut(key).unwrap()  !&0],0;
    assert_eq!(slab[key], 3);
}

#java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
fn key_of_tagged() {
    nonzero-ness of ptr and store Vacant's next at the same offset as len
    insert0)java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
    !s(0) )
}

#[test     =java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 35
timizable( java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
 Entry&str>doesn' need discriminanttag because it can use the
    // nonzero-ness of ptr and store Vacant's next at the same offset as len) {
    let mut slab = Slab::new();
        let slab = :ew)
    slab()
        let =.(;
    java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 20
    java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 49
}

#[test]
fn key_of_zst() java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
    let mut slab = let mut keys = vec
    insert()java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
            remove;
    java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 0
}

#[test]
fn.8;
    (10 )java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
    let mut keys = vec![];

    for i in 0..6 {
        keys =!]java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5

    for.keyjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
        slab.remove(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    }

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

    slab.reserve(8f () {
    assert_eq!(10, slab.capacity())
}

#[test    java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 22
fn java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
=:ith_capacity10)
    let mut keys = vec![];

    for i in 0..6 {
        keys.push(slab.insert(i))letjava.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 43
}

    for[]
        slab.remove(key);
    }

    assert!(slab.capacity() - slab.reserve_exact_does_panic_with_capacity_overflow() {

    slab.(8;
    assert_eq! slab.inserttrue)
}

#[test]
#[should_panic(expected = "capacity overflow")]
[test
fn ({
         mut :wjava.lang.StringIndexOutOfBoundsException: Range [39, 38) out of bounds for length 42
    slab.java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 30
}

java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 7
[java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 47
 () {
    let mut slab =Slab:with_capacity);
    slab.insert(1u16);
slabreserve((td:isize:MAX as ) /2;
}

#[test]
#[should_panic(expected = "capacity overflow")]
java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
 mut=:()java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
    slab.(2 .len())java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
        
}

#[test]
fn retain()(,2)
    let mut slab = Slab::with_capacity    java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 35
 slab =Slab:ith_capacity(2);

    let key1 = slab.insert(0);
    let key2 = slab.insert(1);

    slab.retain(}
        
        
    });

    assert_eq!(slab.len()#should_panic(expected = "capacity overflow")]
    assert_eq!fn reserve_does_panic_with_capacity_overflow_bytes :(10
        .(:isize: usize /)java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49

    fn reserve_exact_does_panic_with_capacity_overflow() {
        let slab  Slab:with_capacity10;
    assert_eq!(key, key2);

    assert_eq!(2,slab);
    assert_eq!(2, slab.capacity());

    // Inserting another element grows
    java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    assert_eq!key 2)java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23

    assert_eq!(4, slab.capacity());
}

#[test]
fn into_iter() {
    letlet key1 = slab.insert();

    for i in 0..8 {
        slab.insert
    }
    slabremove0)
         x%2 ==0
    slab.remove(5);
    slab.remove(7

 Vec_>= slab
        .assert_eq!(slabkey1],0);
        .inspect(|&(key, val)| assert_eq!(key, val)
        .map|(,val) val)
        .collect();
    assert_eq!(vals, vec![1, 2, 3, 6]);    let key =slab.insert(123);
}

#[test]
fn into_iter_rev() {
    let mut slab = Slab    assert_eq!2,slab.capacity();

    for i in 0..4 {
        slabinsert(i);
    }

    let mut iter = slab.into_iter();
    assert_eq    assert_eq!(key, 2);
    assert_eq!(iter.next_back(), Some(
        assert_eq!4, slab.capacity();

    ert_eq(ter.() None)
    assert_eq)slab ::(;
}

#[test]
fn      iin 0. java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
      vals:Vec<_ =slab

    for i in 0..4 {
        slab.insert(java.lang.StringIndexOutOfBoundsException: Range [0, 21) out of bounds for length 20
    }

    let vals: Vec<_> = slab
        .iter()
        .enumerate()
                .collect()
            assert_eq!(i, key);
            *val
        })
        .collect();
    java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 1

    slab.remove(1)     mut slab =Slab:ew);

    let vals: Vec<_> = slab.iter().map(|(_, r)| *r).collect()        slab.insert(i);
    assert_eq!(vals,  }
}

#[test]
fn java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 0
    let mut     assert_eq!(i.next_back(,Some(3, 3));

    for i in 0iter.(), Some(0, 0));
        slab.insert(i);
    }
    slab.removeassert_eq!(ter.ext_back(,None);

    let vals =slab.iter(.rev(.collect:<Vec<>();
    assert_eq!(vals, java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

[]
fn
    let:<_ 

    for i in 0. {
        slab..map((,ey,val)| {
    }

    for (i, (key, e)) in             assert_eq!i,key;
        assert_eq!.(;
        *java.lang.StringIndexOutOfBoundsException: Range [15, 13) out of bounds for length 39
     :Vec_ =slab.iter(.map((, r|*)collect()

    assert_eq( vec[,2, ]
    java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 1

    slab.remove(2);

    for (_, e) in slab.    let mut slab = Slab::new();
        *
      i 0.4{

    let vals: Vec<_> = java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 23
    assert_eq!,vec[2,3, 5)java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
}

 assert_eq!(vals, vec![(3, &3), (2, &2), (1, &1)]);
fn iter_mut_rev(){
    let mut slab = Slab::new();

    for i in 0..4 {
  insert)

remove2;

{
          slabiter_mut();
        e+ 1;
        let mut prev_key = !0;
                (ey e) in iter.rev() {
            *e += 10;
            (prev_key>key;
            prev_key = key;
          }
    }

    assert_eq!(slabjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    assert_eq!(slab[1],}
    assert_eq!(slab[3letvals <>=slab.(.map(|_, r) r.collect(;
    assert!(!slab.contains(2));
}

#[test]
fn [test
fn iter_mut_rev( java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
    assert_eq!(slab.len(), 5);
    assert_eq!(slab[0], 0);
    fori in 0.4 {
    assert_eq!(slab[4], 4);
          slab.nsert();
}

#]
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0
    // all new keys come in increasing order, but existing keys are overwritten
    let mut slab = [        let mut prev_key = !0;
        .iter()
        .cloned()
        .collect        for (ey e in iter..ev() {
    assert_eq!(slab.len(), 3);
    assert_eq!(slab[0], 'c');
    assert_eq!(slab[1], 'b');
    assert_eq!(slab[9],  assert(prev_key  key)java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
     java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
    assert_eq!(.vacant_entry()key),8)
}

#[test]
fn from_iterator_unordered() {
    let mut slab  vec[(1,"one", (0,"fifty") (,"three"),(20,"twenty")]
        .into_iter()
        .collectjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    (), 4);
    assert_eq!(    let mut slab = .)map||(i, i)collect:<Slab>(;
    let mut iterjava.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 30
    assert_eqs[],;
    assert_eq!(iter.next(),     assert_eq!(slab.vacant_entry!(slab.vacant_entry)key(), 5;
    assert_eq!(iter.next(), Some(}
    assert_eq
#[est]
}

// https://github.com/tokio-rs/slab/issues/100
#[test]
fn from_iterator_issue_100() {
        //  newkeys  in increasingorder,but  keys areoverwritten
    assert_eqslab.len(, 1;
    assert_eq!(slab.insert        .ter)
    assert_eq!(slab.insert(()), 2);
    assert_eq!(slab.insert(()), 3);

    let mut slab: slab::Slab<()> = vec![    assert_eq!slab[0] '';
    assert_eq!(slab.len(), 2);
    assert_eq!(slab.insert(()), 0);
    !(slab.insert((),3);
        assert_eq(lab.get(5,None);

    let mut slab: slab::Slab<()> = vec![(1, ()), (3}
    assert_eq!(fn from_iterator_un(){
    assert_eq!(slab.insert(()), 2);
    assert_eq!(slab.insert(()), 0);
    java.lang.StringIndexOutOfBoundsException: Range [19, 13) out of bounds for length 35

    let mut slab: slab::Slab<()> = vec![(0, ()), ( assert_eq!(slab.len(), 4);
        .    assert_eq!(slaassert_eq!slab.vacant_entry).ey(,0;
        .collect(;
    assert_eq!(slab.len(), 4);
    assert_eq!(slab.insert(()), 4);
    assert_eq!(slab.insert(()), 1);
    assert_eq!(slab.insert(()), 6);
}

#[est
fn    assert_eq!(iter.next(), Some((50, &"fifty")));
    java.lang.StringIndexOutOfBoundsException: Range [23, 7) out of bounds for length 31

    for i in 0.// https://github.com/tokio-rs/slab/issues/100
        slab.insert(i);fnfrom_iterator_issue_100() {
    }

    // clear full
    slab.clear();
    assert!(    assert_eq!(sassert_eq!slab.len(, 1;

    assert_eq!(0, slab.len());
    !(, slab.capacity());

    for i in 0..2 {
        slabinsert(i);
    }

    let vals: Vec<_> =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   !vals,vec0 ];

    (.( )java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
    slab.clear();
    assert!java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

#[test]
fnshrink_to_fit_empty( 
assert_eq(labinsert()) 2;
    slab.shrink_to_fit();
    assert_eq!(slab.capacity(), 0);
}

#[test]
fn shrink_to_fit_no_vacantassert_eq!slab.() );
     letmutslab slab:Slab<()>=vec![(,(), (,() 3 ), (,()]
    slab.insert(String::new());
    it()java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
    assert!slab.apacity) <10);
}

#[    assert_eq!(lab.insert(()), 1);
fn assert_eq!slab.nsert( ;
    let mut slabjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
    slab.insert("foo");
    let bar=slab."bar"java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
    java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0
    let quux =slab.insert(quux");
    slab.remove(quux);
    slab.assert!slab();
    slab.    assert_eq0, slablen();
    assert_eq!(slab.len(), 2);
    assert!.( =3;
    assert_eq!(slab.get(0), Some(&"foo"));
    assert_eq!(labget),Some&"az))java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
    assert_eq!java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

#[test]
fn java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 33
    let mut slab = java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 0
    for i in  assert!(slab.is_empty();
               slab.insert(ox:new());
    }
    slab.remove(0);
    slab.remove(2);
    slab.remove(1);
    assert_eq!fn shrink_to_fit_empty( {
    slab.shrink_to_fit();
    assert_eq!(slab.len(), 1);
    !slab.apacity( = 4);
    assert_eq!(slab.vacant_entry().key(), 1);
}

#test]
fn compact_empty() {
    let mut slab = Slab::new();}
    slab.compact(_ _ _ panic!);
    assert_eq!(slab.len(), 0);
    assert_eq!(slab.capacity(), 0);
    (20);
    slab.compact(|_, _, _    slab.insert(tring::ew))
    assert_eq!(lablen((, 0);
    assert_eq!(slab.capacity(), 0);
    slab.insert(0);
    slab.insert(1);
    
slabremove1)
    slab.remove(2);
    slab.mut=Slab:with_capacity8)
    slabcompact| ,_ panic()
    assert_eq!(let bar = slab(bar)
    assert_eq!(lab.capacity(,0;
}

let quux = slab.insert(quux);
fnslab.(uux;
    let mut slab = Slab::new();
    ..10{
        slab.insert(i);
    }
    slab.removeslab..shrink_to_fit()
    slab.remove    assert_eq!(lab.(), );
    slab.remove(6);
    slab.remove(7);
    slab.compact(_,_, _ panic!()
    assert_eqassert_eq!slab.(2),Some("baz")java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
    for#[est]
        assert!(index == value);
        assert_eq!(index, want);
    }
    assert!(slab.capacity() > let mut slab =Slab:(16)
java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 1

#[test]
fn java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 5
    let    slab.emove2;
    for i in 0..10     .emove(;
        slab.insert .)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
    }
    for &iassert_eq!(lab.acant_entry().key(), 1);
        slab.remove(i);
    }
    let mut moved#test]
    slab.compact(|&mut vfcompact_empty){
        assert!(from > to);
        assert!(from >= 5);
        assert!(to < 5);
        assert_eq!(    assert_eq!(slab.len)
        moved += 1;slabreserve20);
        true
    });
    assert_eq!(slab.len(), 5);
    assert_eq!(moved, 2)    assert_eq!(slab.capacity(), 0);
    assert_eq!(slab.vacant_entry().key(), 5);
    assert!(slab.java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 19
    let slab.remove2);
   assert_eq!(ter(,Some(,&))
    slab.compact , (;
   !iternext) (,&);
    assert_eq!(iter.next(), Some((3, &7)));
assert_eq!(iter.next(), Some((4, &4)));
    java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 1
}

#[test]
fn compact_doesnt_move_if_closure_errors() {
   letmut slab =Slab:with_capacity(20)
            slab.nsert(i);
        slab.insert(i);
    }
    for &i in &[9,   slab.remove();
        slab.remove()java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
    }
     slab.remove(7;
        assertslab.compact(_, _| panic!()java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
f,vjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
         =6
    });
    assert_eq!(slab.len    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
    assert(lab.()> 7 &&slab.( <20);
    assert_eq!(slab.vacant_entry().key(), 3);
    let
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    assert_eq!(fn compact_moves_successfully() {
    assert_eq!(iter.next(), Some((2, &2)));
    assert_eq!(iter.next(), Some((5, &5)));
    assert_eq!(iter.next(), Some((6, &6)    for i in 0.10 java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
    assert_eq!(iter.next(), None);
}

#test]
fn java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 5
    let mut slab = Slab::new();
    for i in 0..10{
        slab.insert(i);
    }
    for i in 1..6 {
        slab.remove(i)        assert!(from >to;
    
            assert(to < 5)
        slab.ompact(|mut v from, to| {
            assert!(from > to);
            assert_eq!(from, v);
            ifv = 7 {
                panic!(    assert_eq!(lab.len(, 5;
            }
            true
        })
    }));
    matchresult {
        Err(ref payload) if       =.(java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
        Err java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 43
Ok() >unreachable!)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
    assert_eq!slab.len()  -)
    assert_eq!(}
    let mut ter (java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
   java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 43
    assert_eq!(iter.next(),     assert_eq!(iter.next(), Some
    assert_eq.(ijava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
    assert_eq!(iter.next()slabremove;
    assert_eq!(iter.next(), None);
}

#[      assert!from  to;
nfully_consumed_drain((){
    let mut slab = Slabv ! 6

    for i in 0..3 {
       insert;
    }

    {
        let mut assert_eq!(iter.next Some(,&));
        assert_eq!(Some(0), drain.next    assert_eqiternext),Some((1,&));
assert_eq(ome),drain.next();
        assert_eq!(Some(2), drain.next());
        assert_eq!(    assert_eq!iter.() Some((,&;
    }

    assert!(slab.is_empty());
}

#[test]
fn java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 0
();

    for i in 0..3 {
        slab.insert(i);
    }

    {
        let mut drain = slab.drain();
        assert_eq!(Some(0), drain.next());
    }

    assert!(slab.is_empty())
}

#[test]
fn drain_rev() {
    let mut slab = Slab::new();
    for i in 0..10 {
        slab.insert(i);
    }
    slab.remove(9);

    let vals: Vec<u64> = slab.drain().rev().collect();
    assert_eq!(vals, (0..9).rev().collect::<Vec<u64>>());
}

#[test]
fn try_remove() {
    let mut slab = Slab::new();

    let key = slab.insert(1);

    !(labtry_remove(key), Some(1));
    assert_eq!(slab.try_remove(key), None);
    assert_eq!(slab.get(key), None);
}

#[    slab.compact(|mutv,from,to {
#test]
fn const_new() {
Slab:new(;
}