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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. | |
4 | // | |
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. | |
10 | ||
11 | use core::result::Result::{Ok, Err}; | |
12 | ||
13 | #[test] | |
14 | fn binary_search_not_found() { | |
85aaf69f | 15 | let b = [1, 2, 4, 6, 8, 9]; |
1a4d82fc | 16 | assert!(b.binary_search_by(|v| v.cmp(&6)) == Ok(3)); |
85aaf69f | 17 | let b = [1, 2, 4, 6, 8, 9]; |
1a4d82fc | 18 | assert!(b.binary_search_by(|v| v.cmp(&5)) == Err(3)); |
85aaf69f | 19 | let b = [1, 2, 4, 6, 7, 8, 9]; |
1a4d82fc | 20 | assert!(b.binary_search_by(|v| v.cmp(&6)) == Ok(3)); |
85aaf69f | 21 | let b = [1, 2, 4, 6, 7, 8, 9]; |
1a4d82fc | 22 | assert!(b.binary_search_by(|v| v.cmp(&5)) == Err(3)); |
85aaf69f | 23 | let b = [1, 2, 4, 6, 8, 9]; |
1a4d82fc | 24 | assert!(b.binary_search_by(|v| v.cmp(&8)) == Ok(4)); |
85aaf69f | 25 | let b = [1, 2, 4, 6, 8, 9]; |
1a4d82fc | 26 | assert!(b.binary_search_by(|v| v.cmp(&7)) == Err(4)); |
85aaf69f | 27 | let b = [1, 2, 4, 6, 7, 8, 9]; |
1a4d82fc | 28 | assert!(b.binary_search_by(|v| v.cmp(&8)) == Ok(5)); |
85aaf69f | 29 | let b = [1, 2, 4, 5, 6, 8, 9]; |
1a4d82fc | 30 | assert!(b.binary_search_by(|v| v.cmp(&7)) == Err(5)); |
85aaf69f | 31 | let b = [1, 2, 4, 5, 6, 8, 9]; |
1a4d82fc | 32 | assert!(b.binary_search_by(|v| v.cmp(&0)) == Err(0)); |
85aaf69f | 33 | let b = [1, 2, 4, 5, 6, 8]; |
1a4d82fc JJ |
34 | assert!(b.binary_search_by(|v| v.cmp(&9)) == Err(6)); |
35 | } | |
d9579d0f AL |
36 | |
37 | #[test] | |
38 | fn test_iterator_nth() { | |
39 | let v: &[_] = &[0, 1, 2, 3, 4]; | |
40 | for i in 0..v.len() { | |
41 | assert_eq!(v.iter().nth(i).unwrap(), &v[i]); | |
42 | } | |
43 | assert_eq!(v.iter().nth(v.len()), None); | |
44 | ||
45 | let mut iter = v.iter(); | |
46 | assert_eq!(iter.nth(2).unwrap(), &v[2]); | |
47 | assert_eq!(iter.nth(1).unwrap(), &v[4]); | |
48 | } | |
49 | ||
50 | #[test] | |
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); | |
55 | } | |
56 | ||
57 | #[test] | |
58 | fn test_iterator_count() { | |
59 | let v: &[_] = &[0, 1, 2, 3, 4]; | |
60 | assert_eq!(v.iter().count(), 5); | |
61 | ||
62 | let mut iter2 = v.iter(); | |
63 | iter2.next(); | |
64 | iter2.next(); | |
65 | assert_eq!(iter2.count(), 3); | |
66 | } |