1 use itertools::Itertools;
2 
3 #[test]
specialization_intersperse()4 fn specialization_intersperse() {
5     let mut iter = (1..2).intersperse(0);
6     iter.clone().for_each(|x| assert_eq!(Some(x), iter.next()));
7 
8     let mut iter = (1..3).intersperse(0);
9     iter.clone().for_each(|x| assert_eq!(Some(x), iter.next()));
10 
11     let mut iter = (1..4).intersperse(0);
12     iter.clone().for_each(|x| assert_eq!(Some(x), iter.next()));
13 }
14