1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use core::result::Result::{Ok, Err};
#[test]
fn binary_search_not_found() {
let b = [1, 2, 4, 6, 8, 9];
assert!(b.binary_search_by(|v| v.cmp(&6)) == Ok(3));
let b = [1, 2, 4, 6, 8, 9];
assert!(b.binary_search_by(|v| v.cmp(&5)) == Err(3));
let b = [1, 2, 4, 6, 7, 8, 9];
assert!(b.binary_search_by(|v| v.cmp(&6)) == Ok(3));
let b = [1, 2, 4, 6, 7, 8, 9];
assert!(b.binary_search_by(|v| v.cmp(&5)) == Err(3));
let b = [1, 2, 4, 6, 8, 9];
assert!(b.binary_search_by(|v| v.cmp(&8)) == Ok(4));
let b = [1, 2, 4, 6, 8, 9];
assert!(b.binary_search_by(|v| v.cmp(&7)) == Err(4));
let b = [1, 2, 4, 6, 7, 8, 9];
assert!(b.binary_search_by(|v| v.cmp(&8)) == Ok(5));
let b = [1, 2, 4, 5, 6, 8, 9];
assert!(b.binary_search_by(|v| v.cmp(&7)) == Err(5));
let b = [1, 2, 4, 5, 6, 8, 9];
assert!(b.binary_search_by(|v| v.cmp(&0)) == Err(0));
let b = [1, 2, 4, 5, 6, 8];
assert!(b.binary_search_by(|v| v.cmp(&9)) == Err(6));
}
#[test]
fn test_iterator_nth() {
let v: &[_] = &[0, 1, 2, 3, 4];
for i in 0..v.len() {
assert_eq!(v.iter().nth(i).unwrap(), &v[i]);
}
assert_eq!(v.iter().nth(v.len()), None);
let mut iter = v.iter();
assert_eq!(iter.nth(2).unwrap(), &v[2]);
assert_eq!(iter.nth(1).unwrap(), &v[4]);
}
#[test]
fn test_iterator_last() {
let v: &[_] = &[0, 1, 2, 3, 4];
assert_eq!(v.iter().last().unwrap(), &4);
assert_eq!(v[..1].iter().last().unwrap(), &0);
}
#[test]
fn test_iterator_count() {
let v: &[_] = &[0, 1, 2, 3, 4];
assert_eq!(v.iter().count(), 5);
let mut iter2 = v.iter();
iter2.next();
iter2.next();
assert_eq!(iter2.count(), 3);
}
|
