50 lines
1.4 KiB
Rust
50 lines
1.4 KiB
Rust
use crate::*;
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use rand::Rng;
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#[test]
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fn correctness_random() {
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const MAX_APPEND_LEN: usize = 256;
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const CHUNK_SIZE: usize = 32;
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let mut rng = rand::thread_rng();
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let mut ringbuf = RingBuf::new(1024, 0_u32);
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let mut buf = [0; 32];
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let mut current_value = 0;
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for _ in 0_u32..1024 {
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let append_len = rng.gen_range(0..MAX_APPEND_LEN);
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ringbuf.push_from_iter(current_value as u32..current_value as u32 + append_len as u32);
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for (j, chunk) in ringbuf.chunks_exact_mut(CHUNK_SIZE).enumerate() {
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assert_eq!(chunk.len(), CHUNK_SIZE);
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for (k, v) in chunk.iter().enumerate() {
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assert_eq!(
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*v as usize,
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current_value - current_value % CHUNK_SIZE + j * CHUNK_SIZE + k
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);
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}
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}
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current_value += append_len;
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}
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}
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#[test]
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fn correctness_manual() {
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let mut ringbuf = RingBuf::new(8, 0_u32);
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ringbuf.push_from_iter(1..4);
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let mut iter = ringbuf.chunks_exact_mut(4);
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assert_eq!(iter.next(), None);
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ringbuf.push(4);
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let mut iter = ringbuf.chunks_exact_mut(4);
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assert_eq!(iter.next(), Some([1, 2, 3, 4].as_mut_slice()));
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assert_eq!(iter.next(), None);
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ringbuf.push_from_iter(5..8);
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let mut iter = ringbuf.chunks_exact_mut(4);
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assert_eq!(iter.next(), None);
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ringbuf.push_from_iter(8..14);
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let mut iter = ringbuf.chunks_exact_mut(4);
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assert_eq!(iter.next(), Some([13, 6, 7, 8].as_mut_slice()));
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assert_eq!(iter.next(), Some([9, 10, 11, 12].as_mut_slice()));
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assert_eq!(iter.next(), None);
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}
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