2 newtype_index!(struct MyIdx { MAX = 0xFFFF_FFFA });
5 fn index_size_is_optimized() {
8 assert_eq!(size_of::<MyIdx>(), 4);
10 assert_eq!(size_of::<Option<MyIdx>>(), 4);
12 assert_eq!(size_of::<Option<Option<MyIdx>>>(), 4);
14 assert_eq!(size_of::<Option<Option<Option<MyIdx>>>>(), 4);
16 assert_eq!(size_of::<Option<Option<Option<Option<MyIdx>>>>>(), 4);
18 assert_eq!(size_of::<Option<Option<Option<Option<Option<MyIdx>>>>>>(), 4);
20 assert_eq!(size_of::<Option<Option<Option<Option<Option<Option<MyIdx>>>>>>>(), 8);
24 fn range_iterator_iterates_forwards() {
25 let range = MyIdx::from_u32(1)..MyIdx::from_u32(4);
27 range.collect::<Vec<_>>(),
28 [MyIdx::from_u32(1), MyIdx::from_u32(2), MyIdx::from_u32(3)]
33 fn range_iterator_iterates_backwards() {
34 let range = MyIdx::from_u32(1)..MyIdx::from_u32(4);
36 range.rev().collect::<Vec<_>>(),
37 [MyIdx::from_u32(3), MyIdx::from_u32(2), MyIdx::from_u32(1)]
42 fn range_count_is_correct() {
43 let range = MyIdx::from_u32(1)..MyIdx::from_u32(4);
44 assert_eq!(range.count(), 3);
48 fn range_size_hint_is_correct() {
49 let range = MyIdx::from_u32(1)..MyIdx::from_u32(4);
50 assert_eq!(range.size_hint(), (3, Some(3)));