fn overwrite()

in src/storage/seg/src/tests.rs [111:155]

• 41 lines of code
• 1 McCabe index (conditional complexity)

fn overwrite() {
    let ttl = Duration::ZERO;
    let segment_size = 4096;
    let segments = 64;
    let heap_size = segments * segment_size as usize;

    let mut cache = Seg::builder()
        .segment_size(segment_size)
        .heap_size(heap_size)
        .build()
        .expect("failed to create cache");
    assert_eq!(cache.items(), 0);
    assert_eq!(cache.segments.free(), 64);
    assert!(cache.get(b"drink").is_none());

    println!("==== first insert ====");
    assert!(cache.insert(b"drink", b"coffee", None, ttl).is_ok());
    assert_eq!(cache.segments.free(), 63);
    assert_eq!(cache.items(), 1);
    let item = cache.get(b"drink");
    assert!(item.is_some());
    let item = item.unwrap();
    let value = item.value();
    assert_eq!(value, b"coffee", "item is: {:?}", item);

    println!("==== second insert ====");
    assert!(cache.insert(b"drink", b"espresso", None, ttl).is_ok());
    assert_eq!(cache.segments.free(), 63);
    assert_eq!(cache.items(), 1);
    let item = cache.get(b"drink");
    assert!(item.is_some());
    let item = item.unwrap();
    let value = item.value();
    assert_eq!(value, b"espresso", "item is: {:?}", item);

    println!("==== third insert ====");
    assert!(cache.insert(b"drink", b"whisky", None, ttl).is_ok());
    assert_eq!(cache.segments.free(), 63);
    assert_eq!(cache.items(), 1);
    let item = cache.get(b"drink");
    assert!(item.is_some());
    let item = item.unwrap();
    let value = item.value();
    assert_eq!(value, b"whisky", "item is: {:?}", item);
}