cinny/src/app/state/plaintextCaches.test.ts

import { test } from 'node:test';
import assert from 'node:assert/strict';

// These modules touch localStorage at import/runtime. Provide a minimal mock
// that records removed keys, then import dynamically (a static import would
// hoist above the mock).
const removed: string[] = [];
const store = new Map<string, string>();
// A Proxy so `Object.keys(localStorage)` (used by the prefix sweeps) sees the
// stored keys, like the real Storage object.
const api = {
  getItem: (k: string) => store.get(k) ?? null,
  setItem: (k: string, v: string) => {
    store.set(k, v);
  },
  removeItem: (k: string) => {
    removed.push(k);
    store.delete(k);
  },
};
(globalThis as { localStorage?: unknown }).localStorage = new Proxy(api, {
  ownKeys: () => Array.from(store.keys()),
  getOwnPropertyDescriptor: (target, key) =>
    typeof key === 'string' && store.has(key)
      ? { value: store.get(key), enumerable: true, configurable: true, writable: true }
      : Object.getOwnPropertyDescriptor(target, key),
});

const { clearPlaintextCaches } = await import('./plaintextCaches');

test('clearPlaintextCaches removes every plaintext/PII localStorage key', () => {
  store.clear();
  store.set('cinny_translation_cache_v1', '[]');
  store.set('cinny_scheduled_messages_v1', '{}');
  store.set('cinny_recent_searches_v1', '[]');
  store.set('cinny_recent_forward_targets_v1', '[]');
  store.set('cinny_recent_gifs_v1', '[]');
  store.set('cinny_recent_stickers_v1', '[]');
  store.set('lotus_outbox_v1', '{"userId":"@me:server","entries":[]}');
  removed.length = 0;

  clearPlaintextCaches();

  for (const key of [
    'cinny_translation_cache_v1',
    'cinny_scheduled_messages_v1',
    'cinny_recent_searches_v1',
    'cinny_recent_forward_targets_v1',
    'cinny_recent_gifs_v1',
    'cinny_recent_stickers_v1',
    'lotus_outbox_v1', // [Gitea #112] unsent message content
  ]) {
    assert.ok(removed.includes(key), `${key} cleared`);
  }
  assert.equal(store.size, 0, 'all keys gone from store');
});

test('clearPlaintextCaches clears the per-user nav-path store only when given a userId', () => {
  store.clear();
  store.set('navToActivePath@me:server', '{}');
  removed.length = 0;

  clearPlaintextCaches(); // no userId -> nav path untouched
  assert.ok(!removed.includes('navToActivePath@me:server'), 'nav path kept without userId');

  clearPlaintextCaches('@me:server');
  assert.ok(removed.includes('navToActivePath@me:server'), 'nav path cleared with userId');
});

test('clearPlaintextCaches wipes drafts (#41) and the status message (#204) but not session keys', () => {
  store.clear();
  store.set('draft-msg-!room:server', '{"body":"unsent"}');
  store.set('lotus-status-msg-@me:server', 'at the dentist');
  store.set('lotus-status-expiry-@me:server', '123');
  store.set('cinny_session', '{"accessToken":"x"}');
  removed.length = 0;

  clearPlaintextCaches('@me:server');

  assert.ok(removed.includes('draft-msg-!room:server'), 'draft cleared');
  assert.ok(removed.includes('lotus-status-msg-@me:server'), 'status message cleared');
  assert.ok(removed.includes('lotus-status-expiry-@me:server'), 'status expiry cleared');
  assert.ok(!removed.includes('cinny_session'), 'session key not this module’s concern');
  assert.ok(store.has('cinny_session'));
});