1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 use core::result::Result::{Ok, Err};
14 fn binary_search_not_found() {
15 let b = [1, 2, 4, 6, 8, 9];
16 assert!(b.binary_search_by(|v| v.cmp(&6)) == Ok(3));
17 let b = [1, 2, 4, 6, 8, 9];
18 assert!(b.binary_search_by(|v| v.cmp(&5)) == Err(3));
19 let b = [1, 2, 4, 6, 7, 8, 9];
20 assert!(b.binary_search_by(|v| v.cmp(&6)) == Ok(3));
21 let b = [1, 2, 4, 6, 7, 8, 9];
22 assert!(b.binary_search_by(|v| v.cmp(&5)) == Err(3));
23 let b = [1, 2, 4, 6, 8, 9];
24 assert!(b.binary_search_by(|v| v.cmp(&8)) == Ok(4));
25 let b = [1, 2, 4, 6, 8, 9];
26 assert!(b.binary_search_by(|v| v.cmp(&7)) == Err(4));
27 let b = [1, 2, 4, 6, 7, 8, 9];
28 assert!(b.binary_search_by(|v| v.cmp(&8)) == Ok(5));
29 let b = [1, 2, 4, 5, 6, 8, 9];
30 assert!(b.binary_search_by(|v| v.cmp(&7)) == Err(5));
31 let b = [1, 2, 4, 5, 6, 8, 9];
32 assert!(b.binary_search_by(|v| v.cmp(&0)) == Err(0));
33 let b = [1, 2, 4, 5, 6, 8];
34 assert!(b.binary_search_by(|v| v.cmp(&9)) == Err(6));
38 fn test_iterator_nth() {
39 let v: &[_] = &[0, 1, 2, 3, 4];
41 assert_eq!(v.iter().nth(i).unwrap(), &v[i]);
43 assert_eq!(v.iter().nth(v.len()), None);
45 let mut iter = v.iter();
46 assert_eq!(iter.nth(2).unwrap(), &v[2]);
47 assert_eq!(iter.nth(1).unwrap(), &v[4]);
51 fn test_iterator_last() {
52 let v: &[_] = &[0, 1, 2, 3, 4];
53 assert_eq!(v.iter().last().unwrap(), &4);
54 assert_eq!(v[..1].iter().last().unwrap(), &0);
58 fn test_iterator_count() {
59 let v: &[_] = &[0, 1, 2, 3, 4];
60 assert_eq!(v.iter().count(), 5);
62 let mut iter2 = v.iter();
65 assert_eq!(iter2.count(), 3);