16 lines
529 B
JavaScript
16 lines
529 B
JavaScript
|
import LRUCache from '../../src/array/lru-cache'
|
||
|
|
|
||
|
|
test('LRU缓存机制', () => {
|
||
|
|
const cache = new LRUCache(2 /* 缓存容量 */)
|
||
|
|
|
||
|
|
cache.put(1, 1)
|
||
|
|
cache.put(2, 2)
|
||
|
|
expect(cache.get(1)).toBe(1) // 返回 1
|
||
|
|
cache.put(3, 3) // 该操作会使得密钥 2 作废
|
||
|
|
expect(cache.get(2)).toBe(-1) // 返回 -1 (未找到)
|
||
|
|
cache.put(4, 4) // 该操作会使得密钥 1 作废
|
||
|
|
expect(cache.get(1)).toBe(-1) // 返回 -1 (未找到)
|
||
|
|
expect(cache.get(3)).toBe(3) // 返回 3
|
||
|
|
expect(cache.get(4)).toBe(4) // 返回 4
|
||
|
|
})
|