const test = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');

const ROOT = path.resolve(__dirname, '..');

test('index bootstraps state export runtime module', () => {
  const html = fs.readFileSync(path.join(ROOT, 'index.html'), 'utf8');
  assert.match(html, /js\/state-export\.js/);
});

test('engine tick writes state snapshots through the state export hook', () => {
  const source = fs.readFileSync(path.join(ROOT, 'js', 'engine.js'), 'utf8');
  assert.match(source, /StateExport/);
  assert.match(source, /onTickBoundary\(G\)/);
});