52 lines
2.0 KiB
TypeScript
52 lines
2.0 KiB
TypeScript
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import assert from "node:assert/strict";
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import test from "node:test";
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import {
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getDirectoryCacheEntry,
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setDirectoryCacheEntry,
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type DirectoryListingCache,
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} from "./directoryListingCache";
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const files = (count: number) => Array.from({ length: count }, (_value, index) => ({
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name: `file-${index}`,
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})) as never[];
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test("directory cache removes expired entries when it is read", () => {
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const cache: DirectoryListingCache = new Map([
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["expired", { files: files(1), timestamp: 0 }],
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["fresh", { files: files(1), timestamp: 95 }],
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]);
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assert.equal(getDirectoryCacheEntry(cache, "fresh", 100, 10)?.files.length, 1);
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assert.equal(cache.has("expired"), false);
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});
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test("directory cache evicts least-recently-used listings by entry count", () => {
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const cache: DirectoryListingCache = new Map();
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setDirectoryCacheEntry(cache, "a", { files: files(1), timestamp: 1 }, { now: 1, ttlMs: 1_000, maxEntries: 2 });
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setDirectoryCacheEntry(cache, "b", { files: files(1), timestamp: 2 }, { now: 2, ttlMs: 1_000, maxEntries: 2 });
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assert.ok(getDirectoryCacheEntry(cache, "a", 3, 1_000));
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setDirectoryCacheEntry(cache, "c", { files: files(1), timestamp: 4 }, { now: 4, ttlMs: 1_000, maxEntries: 2 });
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assert.deepEqual([...cache.keys()], ["a", "c"]);
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});
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test("directory cache bounds retained file rows", () => {
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const cache: DirectoryListingCache = new Map();
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setDirectoryCacheEntry(cache, "large-a", { files: files(6), timestamp: 1 }, { now: 1, ttlMs: 1_000, maxFiles: 10 });
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setDirectoryCacheEntry(cache, "large-b", { files: files(6), timestamp: 2 }, { now: 2, ttlMs: 1_000, maxFiles: 10 });
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assert.deepEqual([...cache.keys()], ["large-b"]);
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});
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test("directory cache does not retain one listing larger than the file budget", () => {
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const cache: DirectoryListingCache = new Map();
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setDirectoryCacheEntry(
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cache,
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"oversized",
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{ files: files(11), timestamp: 1 },
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{ now: 1, ttlMs: 1_000, maxFiles: 10 },
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);
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assert.equal(cache.has("oversized"), false);
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});
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