homeio

1import { describe, expect, it, vi } from "vitest";
2import { LruCache } from "@/lib/server/cache/lru";
3
4describe("LruCache", () => {
5  it("returns cached values before ttl", () => {
6    vi.useFakeTimers();
7    vi.setSystemTime(new Date("2026-02-22T00:00:00.000Z"));
8
9    const cache = new LruCache<number>(2, 1000);
10    cache.set("a", 1);
11
12    expect(cache.get("a")).toBe(1);
13
14    vi.useRealTimers();
15  });
16
17  it("expires entries after ttl", () => {
18    vi.useFakeTimers();
19    vi.setSystemTime(new Date("2026-02-22T00:00:00.000Z"));
20
21    const cache = new LruCache<number>(2, 1000);
22    cache.set("a", 1);
23
24    vi.advanceTimersByTime(1001);
25
26    expect(cache.get("a")).toBeNull();
27
28    vi.useRealTimers();
29  });
30
31  it("evicts least recently used when max entries is reached", () => {
32    const cache = new LruCache<number>(2, 10000);
33
34    cache.set("a", 1);
35    cache.set("b", 2);
36    cache.get("a");
37    cache.set("c", 3);
38
39    expect(cache.get("a")).toBe(1);
40    expect(cache.get("b")).toBeNull();
41    expect(cache.get("c")).toBe(3);
42  });
43});
44