77 lines
2.3 KiB
TypeScript
77 lines
2.3 KiB
TypeScript
import { describe, expect, it, vi } from "vitest";
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import { createSelfChatCache } from "./self-chat-cache.js";
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describe("createSelfChatCache", () => {
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const directLookup = {
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accountId: "default",
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sender: "+15555550123",
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isGroup: false,
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} as const;
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it("matches repeated lookups for the same scope, timestamp, and text", () => {
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vi.useFakeTimers();
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vi.setSystemTime(new Date("2026-03-07T00:00:00Z"));
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const cache = createSelfChatCache();
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cache.remember({
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...directLookup,
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text: " hello\r\nworld ",
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createdAt: 123,
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});
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expect(
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cache.has({
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...directLookup,
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text: "hello\nworld",
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createdAt: 123,
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}),
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).toBe(true);
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});
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it("expires entries after the ttl window", () => {
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vi.useFakeTimers();
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vi.setSystemTime(new Date("2026-03-07T00:00:00Z"));
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const cache = createSelfChatCache();
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cache.remember({ ...directLookup, text: "hello", createdAt: 123 });
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vi.advanceTimersByTime(11_001);
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expect(cache.has({ ...directLookup, text: "hello", createdAt: 123 })).toBe(false);
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});
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it("evicts older entries when the cache exceeds its cap", () => {
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vi.useFakeTimers();
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vi.setSystemTime(new Date("2026-03-07T00:00:00Z"));
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const cache = createSelfChatCache();
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for (let i = 0; i < 513; i += 1) {
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cache.remember({
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...directLookup,
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text: `message-${i}`,
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createdAt: i,
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});
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vi.advanceTimersByTime(1_001);
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}
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expect(cache.has({ ...directLookup, text: "message-0", createdAt: 0 })).toBe(false);
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expect(cache.has({ ...directLookup, text: "message-512", createdAt: 512 })).toBe(true);
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});
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it("does not collide long texts that differ only in the middle", () => {
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vi.useFakeTimers();
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vi.setSystemTime(new Date("2026-03-07T00:00:00Z"));
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const cache = createSelfChatCache();
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const prefix = "a".repeat(256);
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const suffix = "b".repeat(256);
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const longTextA = `${prefix}${"x".repeat(300)}${suffix}`;
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const longTextB = `${prefix}${"y".repeat(300)}${suffix}`;
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cache.remember({ ...directLookup, text: longTextA, createdAt: 123 });
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expect(cache.has({ ...directLookup, text: longTextA, createdAt: 123 })).toBe(true);
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expect(cache.has({ ...directLookup, text: longTextB, createdAt: 123 })).toBe(false);
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});
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});
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