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authorAdam Soltys <[email protected]>2012-09-05 23:14:44 -0700
committerAdam Soltys <[email protected]>2012-09-05 23:14:44 -0700
commit0349fd7a02e39a31646e15b91a80d87012195eee (patch)
tree038f54ea31785f3bde37611938b5a89e972946d9 /node_modules/jade/lib/parser.js
parent50b6104ee6a9ac99fdd87f2226cbfbde04542f2a (diff)
downloadcoinos-server-0349fd7a02e39a31646e15b91a80d87012195eee.tar.gz
coinos-server-0349fd7a02e39a31646e15b91a80d87012195eee.zip
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generated by cgit v1.2.3 (git 2.51.0) at 2026-10-23 12:36:07 +0000
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// The IndexedDB cache store (src/cache-store.js): localStorage copies move in
// and leave, an early write can't replace the full copy, re-reads fire once
// it opens, writes land behind, wipes reach it, and a refused IndexedDB
// leaves everything in localStorage as before.
// Run: bun tools/cache-store-test.js
import { CacheStore, isCacheKey } from '../src/cache-store.js';

let fails = 0;
const check = (name, ok, detail = '') => {
  console.log(` ${ok ? '✓' : '✗'} ${name}${detail ? ' — ' + detail : ''}`);
  if (!ok) fails++;
};
const fakeLs = (init = {}) => {
  const m = new Map(Object.entries(init));
  return {
    get length() { return m.size; },
    key: (i) => [...m.keys()][i] ?? null,
    getItem: (k) => (m.has(k) ? m.get(k) : null),
    setItem: (k, v) => { m.set(k, String(v)); },
    removeItem: (k) => { m.delete(k); },
    dump: () => m,
  };
};
const memBackend = (init = []) => {
  const m = new Map(init);
  return { writes: 0, async list() { return [...m]; }, async write(puts, dels) { this.writes++; for (const [k, v] of puts) m.set(k, v); for (const k of dels) m.delete(k); }, dump: () => m };
};
const W = 'btc-wallet-cache:abc123';

console.log('[which keys]');
check('a wallet\'s profile cache is one', isCacheKey(W + ':profiles'));
check('link previews are one', isCacheKey('coinos-link-previews'));
check('the messages state is not (read markers, drafts)', !isCacheKey(W + ':messages'));
check('the follow list is not', !isCacheKey(W + ':follows'));
check('note threads stay (server-rendered pages seed them early)', !isCacheKey('btc-wallet-note-threads'));

console.log('\n[first open: localStorage moves in]');
{
  const ls = fakeLs({ [W + ':profiles']: '{"a":1}', 'coinos-link-previews': '[["u",1]]', [W + ':messages']: '{"read":{}}' });
  const be = memBackend();
  const s = new CacheStore({ backend: be, ls: () => ls, listen: false });
  check('before opening, reads come from localStorage', s.getItem(W + ':profiles') === '{"a":1}');
  let hooked = 0;
  s.onReady(() => hooked++);
  await s.open();
  check('the ready hook ran once', hooked === 1);
  check('reads now come from memory', s.getItem(W + ':profiles') === '{"a":1}');
  await s.flush(); await new Promise((r) => setTimeout(r, 0));
  check('the copies are in IndexedDB', be.dump().get(W + ':profiles') === '{"a":1}' && be.dump().get('coinos-link-previews') === '[["u",1]]');
  check('...and gone from localStorage', ls.getItem(W + ':profiles') === null && ls.getItem('coinos-link-previews') === null);
  check('state that isn\'t a cache stays put', ls.getItem(W + ':messages') === '{"read":{}}');
  check('a non-cache key still reads from localStorage', s.getItem(W + ':messages') === '{"read":{}}');
}

console.log('\n[a later boot: an early write must not replace the full copy]');
{
  const ls = fakeLs();
  const be = memBackend([[W + ':profiles', '{"full":true}']]);
  const s = new CacheStore({ backend: be, ls: () => ls, listen: false });
  check('an early read finds nothing (migrated)', s.getItem(W + ':profiles') === null);
  s.setItem(W + ':profiles', '{"early":true}');
  check('the early write didn\'t land in localStorage', ls.getItem(W + ':profiles') === null);
  await s.open();
  check('the full copy survived', s.getItem(W + ':profiles') === '{"full":true}');
}

console.log('\n[an older build in another tab wrote localStorage again]');
{
  const ls = fakeLs({ [W + ':reports']: '{"newer":1}' });
  const be = memBackend([[W + ':reports', '{"older":1}']]);
  const s = new CacheStore({ backend: be, ls: () => ls, listen: false });
  s.setItem(W + ':reports', '{"early":1}');
  check('an early write to a key still in localStorage goes there', ls.getItem(W + ':reports') === '{"early":1}');
  await s.open();
  check('localStorage\'s copy wins on open', s.getItem(W + ':reports') === '{"early":1}');
}

console.log('\n[a copy written to localStorage after opening]');
{
  const ls = fakeLs();
  const be = memBackend();
  const s = new CacheStore({ backend: be, ls: () => ls, listen: false });
  await s.open();
  ls.setItem(W + ':profPages', '{"late":1}');
  check('is found on first ask', s.getItem(W + ':profPages') === '{"late":1}');
  await s.flush(); await new Promise((r) => setTimeout(r, 0)); await s.flush(); await new Promise((r) => setTimeout(r, 0));
  check('...and moves in', be.dump().get(W + ':profPages') === '{"late":1}' && ls.getItem(W + ':profPages') === null);
}

console.log('\n[writes land behind, deletes and wipes reach it]');
{
  const ls = fakeLs();
  const be = memBackend([[W + ':profiles', 'x'], [W + ':reports', 'y'], ['btc-wallet-cache:other:profiles', 'z']]);
  const s = new CacheStore({ backend: be, ls: () => ls, listen: false });
  await s.open();
  s.setItem(W + ':profiles', 'x2');
  s.setItem(W + ':profiles', 'x3');
  check('nothing written yet (coalesced)', be.dump().get(W + ':profiles') === 'x');
  await s.flush();
  check('one write with the latest value', be.dump().get(W + ':profiles') === 'x3' && be.writes === 1);
  s.removePrefix(W);
  await s.flush();
  check('a wallet wipe removes its caches', !be.dump().has(W + ':profiles') && !be.dump().has(W + ':reports'));
  check('...and only its own', be.dump().get('btc-wallet-cache:other:profiles') === 'z');
  check('a non-cache key written through it goes to localStorage', (s.setItem(W + ':messages', 'm'), ls.getItem(W + ':messages') === 'm'));
}

console.log('\n[a failed write is retried]');
{
  const ls = fakeLs();
  let fail = true;
  const m = new Map();
  const be = { async list() { return []; }, async write(puts) { if (fail) throw new Error('quota'); for (const [k, v] of puts) m.set(k, v); } };
  const s = new CacheStore({ backend: be, ls: () => ls, listen: false });
  await s.open();
  s.setItem(W + ':profiles', 'p');
  await s.flush();
  check('kept in memory after the failure', s.getItem(W + ':profiles') === 'p');
  fail = false;
  await s.flush();
  check('written on the next flush', m.get(W + ':profiles') === 'p');
}

console.log('\n[IndexedDB refused]');
{
  const ls = fakeLs({ [W + ':profiles']: 'kept' });
  const s = new CacheStore({ backend: { async list() { throw new Error('private mode'); } }, ls: () => ls, listen: false });
  let hooked = 0; s.onReady(() => hooked++);
  await s.open();
  check('still opens (hooks run)', hooked === 1);
  check('reads localStorage', s.getItem(W + ':profiles') === 'kept');
  s.setItem(W + ':profiles', 'new');
  check('writes localStorage', ls.getItem(W + ':profiles') === 'new');
}

console.log(fails ? `\n❌ ${fails} failed` : '\n✅ cache store holds');
process.exit(fails ? 1 : 0);