#![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

    let = 0;
    letjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

}
            .(;
        *   = java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19


        let vals:<  
    [,)
    assert! )

        (_ |java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
     insert123;
    assert_eq!(key, key2);

    assert_eq!(2, java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
    ( capacity)

    // Inserting another element grows
    let key = slab.insert        .ijava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
    java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 23

    (,)
}

#[    ass!inext_back),None)
fn into_iter( {
    let mut  =Slab:new)java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31

    for 0.. {
        slab.insert(i);
    }
    slab.remove(0);
    slab.remove(4);
    slab.remove(5);
    slab.remove(7);

   let <_ java.lang.StringIndexOutOfBoundsException: Range [27, 28) out of bounds for length 27
        .into_iter()
        .inspect(|&(key, val)| java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 5
        .        )
        (
    assert_eq!(vals,            java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 31
}

#[test]
fn 
    let  :n(;

    for i in 0..4 java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 0
        java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 23
       java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5

    let mut iter = slab.into_iter();
ter) (3,3);
    assert_eq!(iter.next_back(    
(next,(,0)java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
    assert_eq!(iter.next_back(), Some((1, 1)));
    (.( ;
    assert_eq     =iter)):_>)java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
}

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

    for i in 0..4 {
        slab.insert#[test
    }

     vals:Vec<_ =slab
        
        .       0.4{
       (i, (ey ) java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
!i,)
            *val
        })
        collect(;
   assert_eq!(vals, vec![0, 1, 2, 3]);

    slab.remove(1);

letvals Vec<>  iter)map|_ )|*.)
!vals,!0 2,3);
}

#[test]
fn java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31

   for  in.4 java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
        slab.insert(i);
    }
    slab!vals,!2 , ];

    let vals = slab.iter().rev
   java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 54
}

#[test]
fn iter_mut( java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
    let mut java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

          slab.(i;
        slab
        slab.remove(2);

    {
        let mutiter =.);
* =1java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
    }

    let vals: Vec<_> =  for k, java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 36
    assert_eq!(            assert!  )

          java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9

    for (_, e) in slab.iter_mut() {
        *e += 1;
    

     :Vec_  iter)((,r|*)(java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
    assert_eq!(vals,
}

#]
 ){
    let mut slab = Slab::new()java.lang.StringIndexOutOfBoundsException: Range [15, 13) out of bounds for length 30

     i 0. java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
  .(;
    }
    [test

    {
        let mut iter = slab.iter_mut();
        assert_eq!(iter.next // all new keys come in increasing order, but existing keys are overwritten
        java.lang.StringIndexOutOfBoundsException: Range [30, 11) out of bounds for length 30
for(,).) java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
            *e += 10    java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 29
           ! >;
            prev_key = key;
        }
    }

    assert_eq!(slab[0](slab)( )
    assert_eq!java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        =!(1 ) ( )( ) 20,)
    assert!(!slab.contains(2));
}

#[test]
fn assert_eq!(slab.len)
(0.5.(i i ).:<<_>)java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
    assert_eq!(slab.len(), 5);
    assert_eq!(slab[0], 0);
    assert_eq!(slab[2], 2);
    !(lab[],4)java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
    assert_eq((.) 5)java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
}

#[]
fn java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 0
all comeincreasing ,existing 
    let mut     !() )
        .(
        .cloned()
        .collect:java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 35
    assert_eq!(slabjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
!0, ')
    assert_eq!(slab[1], 'b' java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 30
        assert_eq) )
    !s() ;
    assert_eq!java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

#[test]
ordered)
    java.lang.StringIndexOutOfBoundsException: Range [15, 13) out of bounds for length 35
        .assert_eq!(slab.insert(()), 4);
        .collect::<java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 0
   java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 30
    !(.) )
    let mut iter =         )java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
    assert_eq!    java.lang.StringIndexOutOfBoundsException: Range [15, 13) out of bounds for length 35
    assert_eq}
    assert_eq#t]
    java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 50
    assert_eq!(let mut slab = Slab::new();
}

// https://github.com/tokio-rs/slab/issues/100
#[test]
fn java.lang.StringIndexOutOfBoundsException: Range [29, 26) out of bounds for length 30
    let mut slab: slab    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
    () )
    assert_eq!(java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
    assert_eq4 java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 35
    assert_eq!(slab.        .java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 23

    let mut slab: slab::Slab<()> = vec!assert_eq( ![0,1];
    assert_eq!(lablen),2);
    assert_eq!(slab.insert(()), 0);
    assert_eq!(slab.insert(()), 3);
    assert_eq!(slab.insert(()), 4);

    let mut slab: slab::Slab<()> = vec![(1, ()), (3, ())].into_iter().collect();
    assert_eq ){
    !(.() 2)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
    assert_eq!(slab.java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 1
    assert_eq(insert(),4;

     :slab:<()  [( ),( ), (,(), 5 )java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
        .slab.shrink_to_f;
        .collect();
    assert_eq!(slab.len(    (.( <10;
    assert_eq
    (java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 35
    (.nsert()),6)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
}

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

    for i    let   insert(bar";
        slab.insert(i);
    }

    // clear full
    slab.clear   "java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
    (.is_empty();

    !(0, slab.()java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
    assert_eq!(4, slab.capacity()    assert!slab.apacity)> )java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34

    fors.(2 ("")
        slab.insert(i);
    }

    let vals: Vec<_> = java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 1
    assert_eq!(vals, vec![0, 1]);

    // clear half-filled
    slab.clear();
   ();
        B:i);

#[test]    java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 19
 )java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
        assert(.)>4)java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
    slab.shrink_to_fit()}
    assert_eq!java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 7
}

#[    compact|,_|!)
java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 30
    let mut     slab.reserve
slab(:()
    slab.(.)0;
    assert!    java.lang.StringIndexOutOfBoundsException: Range [15, 13) out of bounds for length 35
}

#[    .()java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
fn shrink_to_fit_doesnt_move() {
   let  slab  Slab:with_capacity(8);
    slab.insert("foo"    .(|,_ _panic!);
    .insert"";
        () )java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
      ="";
    removeq)java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
    slab.for i in 0 java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
    )
    (len) ;
    assert!(    6;
    assert_eq!    | ,_ ()
    (get) &baz);
    assert_eq!(slab.vacant_entry().key(), bar);
}

#[java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
        java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 32
   mut  :with_capacity16)
    for i in 0..4
        slab.java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 0
    }
    slab.remove(0);
    slab.()java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
    slab.emove()
    assert_eq!(slab.vacant_entry().key(), 1);
    labshrink_to_fit(;
    assert_eq!(slab.len(), 1);
    assert!(slab.capacity() >= 4);
    (.java.lang.StringIndexOutOfBoundsException: Range [34, 32) out of bounds for length 45
}

[java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 7
n ( java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
           java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 27
    slab.compact(|_, _, _|         java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 24
    (), 0)
    assert_eq!(slab.capacity(), 0);
   slab.reserve(20);
    slab.compact(|_, _, _| java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 12
    assert_eq!(slab.len(), 0);
    java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 35
    slabjava.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 45
    slab.insert(1);
    slab.insert(2);
    slab.remove(1);
    (2;
    slab.remove (.next) (0 8);
    slab(|_, _,_|panic!!();
    assert_eq!(slab.    assert_eq!(.(,Some(2 2))java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
    assert_eq!(slab.capacity()    java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 43
}

#[test]
fn compact_no_moves_needed() {
    let java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    for i in   mut =:20;
.java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 23
    }
   8;
    slab.removei;
    slab.remove(6);
       ()
    |, _ _ ()
    assert_eq!(slab.len(), 6);
    for ((        assert_eq!!(rom v);
        assert!(index == value);
        assert_eq!(index        v! java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
}
    assert!(slab.capacity() >= 6 && slab.    assert!(slab.capacity() >= 7 && slab.capacity!(capacity =7 &&nbsp;capacity)<20);
}

#[test]
java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 33
    let mut slab    java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 43
       0. {
        slab.insert(i);
    }
    for    java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 34
        #
    }
    let mut moved = 0;
    slab.compact(|&mut v, from,     i0. java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
       ( );
        assert!(from > 
!to<5)
        assert_eq!(from .| , |
        moved +=            java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 31
             v=7{
    });
() )
    assert_eq!(moved, 2);
    java.lang.StringIndexOutOfBoundsException: Range [12, 8) out of bounds for length 16
     java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
    let mut iter  slabiter(;
    assert_eq!(iter.next(), Some((0, &8)));
    assert_eq!(iter.next(), Some((1, &1)));
   assert_eq!(iter.next(), Some((2, &2)));
    assert_eq!(iter.next(), Some((3, &        (() = (,
    assert_eq}
    assert_eq!(iter.next() !(,5-1;
i = slab.iter();

#[test]
fn compact_doesnt_move_if_closure_errors() {
    let mut slab =     assert_eq!(iter.next(), Some((0, &0)));
java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 20
        slabinsert);
    }
    for &i in &[9, 3, 1, 4, 0] {
        .(i)java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
    }
    slab.compact
        (>)
        assert_eq!(from, v)f ( 
         !6
    });
    assert_eq!(slab.len(), 5);
    java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 0
    assert_eq!(slab.vacant_entry(        slab.(i);
    let mut iter java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 0
    (),(0 8)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
!(iter.(,(1 7);
    assert_eq!(iter.next        !S(1,)java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
    (.next,(5 &5));
    assert_eq!java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    assert_eq!(iter.java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

#[test]
fn compact_handles_closure_panic() {
    let mut slab = Slab::    let mut slab = Slab::new
    for i assert_eq(.java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 46
        slab.insert(i);
    }
    for i in 1..6 {
        slab.remove(i);
    }
    let
    | , |{
            assert!(from > to)#
            assert_eq!(from, :new)
            if v == 7 {
                panic!("test");
            }
            true
        })
    }));
    match result {
        Err(ref payload) if payload.downcast_ref() == Some(&"test") => {}
        Err(bug) => resume_unwind(bug),
        Ok(()) => unreachable!(),
    }
    assert_eq!(slab.len(), 5 - 1);
    assert_eq!(slab.vacant_entry().key(), 3);
    let mut iter = slab.iter();
    assert_eq!(iter.next(), Some((0, &0)));
    assert_eq!(iter.next(), Some((1, &9)));
    assert_eq!(iter.next(), Some((2, &8)));
    assert_eq!(iter.next(), Some((6, &6)));
    assert_eq!(iter.next(), None);
}

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

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

    {
        let mut drain = slab.drain();
        assert_eq!(Some(0), drain.next());
        assert_eq!(Some(1), drain.next());
        assert_eq!(Some(2), drain.next());
        assert_eq!(None, drain.next());
    }

    assert!(slab.is_empty());
}

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

    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);

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

#[rustversion::since(1.39)]
#[test]
fn const_new() {
    static _SLAB: Slab<()> = Slab::new();
}