| // 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); |
| } |
| |
| #[test] |
| fn test_chunks_count() { |
| let v: &[i32] = &[0, 1, 2, 3, 4, 5]; |
| let c = v.chunks(3); |
| assert_eq!(c.count(), 2); |
| |
| let v2: &[i32] = &[0, 1, 2, 3, 4]; |
| let c2 = v2.chunks(2); |
| assert_eq!(c2.count(), 3); |
| |
| let v3: &[i32] = &[]; |
| let c3 = v3.chunks(2); |
| assert_eq!(c3.count(), 0); |
| } |
| |
| #[test] |
| fn test_chunks_nth() { |
| let v: &[i32] = &[0, 1, 2, 3, 4, 5]; |
| let mut c = v.chunks(2); |
| assert_eq!(c.nth(1).unwrap()[1], 3); |
| assert_eq!(c.next().unwrap()[0], 4); |
| |
| let v2: &[i32] = &[0, 1, 2, 3, 4]; |
| let mut c2 = v2.chunks(3); |
| assert_eq!(c2.nth(1).unwrap()[1], 4); |
| assert_eq!(c2.next(), None); |
| } |
| |
| #[test] |
| fn test_chunks_last() { |
| let v: &[i32] = &[0, 1, 2, 3, 4, 5]; |
| let c = v.chunks(2); |
| assert_eq!(c.last().unwrap()[1], 5); |
| |
| let v2: &[i32] = &[0, 1, 2, 3, 4]; |
| let c2 = v2.chunks(2); |
| assert_eq!(c2.last().unwrap()[0], 4); |
| } |
| |
| #[test] |
| fn test_chunks_mut_count() { |
| let mut v: &mut [i32] = &mut [0, 1, 2, 3, 4, 5]; |
| let c = v.chunks_mut(3); |
| assert_eq!(c.count(), 2); |
| |
| let mut v2: &mut [i32] = &mut [0, 1, 2, 3, 4]; |
| let c2 = v2.chunks_mut(2); |
| assert_eq!(c2.count(), 3); |
| |
| let mut v3: &mut [i32] = &mut []; |
| let c3 = v3.chunks_mut(2); |
| assert_eq!(c3.count(), 0); |
| } |
| |
| #[test] |
| fn test_chunks_mut_nth() { |
| let mut v: &mut [i32] = &mut [0, 1, 2, 3, 4, 5]; |
| let mut c = v.chunks_mut(2); |
| assert_eq!(c.nth(1).unwrap()[1], 3); |
| assert_eq!(c.next().unwrap()[0], 4); |
| |
| let mut v2: &mut [i32] = &mut [0, 1, 2, 3, 4]; |
| let mut c2 = v2.chunks_mut(3); |
| assert_eq!(c2.nth(1).unwrap()[1], 4); |
| assert_eq!(c2.next(), None); |
| } |
| |
| #[test] |
| fn test_chunks_mut_last() { |
| let v: &mut [i32] = &mut [0, 1, 2, 3, 4, 5]; |
| let c = v.chunks_mut(2); |
| assert_eq!(c.last().unwrap()[1], 5); |
| |
| let v2: &mut [i32] = &mut [0, 1, 2, 3, 4]; |
| let c2 = v2.chunks_mut(2); |
| assert_eq!(c2.last().unwrap()[0], 4); |
| } |
| |
| |
| |
| |
| #[test] |
| fn test_windows_count() { |
| let v: &[i32] = &[0, 1, 2, 3, 4, 5]; |
| let c = v.windows(3); |
| assert_eq!(c.count(), 4); |
| |
| let v2: &[i32] = &[0, 1, 2, 3, 4]; |
| let c2 = v2.windows(6); |
| assert_eq!(c2.count(), 0); |
| |
| let v3: &[i32] = &[]; |
| let c3 = v3.windows(2); |
| assert_eq!(c3.count(), 0); |
| } |
| |
| #[test] |
| fn test_windows_nth() { |
| let v: &[i32] = &[0, 1, 2, 3, 4, 5]; |
| let mut c = v.windows(2); |
| assert_eq!(c.nth(2).unwrap()[1], 3); |
| assert_eq!(c.next().unwrap()[0], 3); |
| |
| let v2: &[i32] = &[0, 1, 2, 3, 4]; |
| let mut c2 = v2.windows(4); |
| assert_eq!(c2.nth(1).unwrap()[1], 2); |
| assert_eq!(c2.next(), None); |
| } |
| |
| #[test] |
| fn test_windows_last() { |
| let v: &[i32] = &[0, 1, 2, 3, 4, 5]; |
| let c = v.windows(2); |
| assert_eq!(c.last().unwrap()[1], 5); |
| |
| let v2: &[i32] = &[0, 1, 2, 3, 4]; |
| let c2 = v2.windows(2); |
| assert_eq!(c2.last().unwrap()[0], 3); |
| } |