const test = require('node:test');
const assert = require('node:assert/strict');
const { execFileSync } = require('node:child_process');
const path = require('node:path');

test('the public loader version follows every runtime JS mtime and falls back when none exist', () => {
  const harness = path.join(__dirname, 'runtime-assets-behavior-harness.php');
  const result = JSON.parse(execFileSync('php', [harness], { encoding: 'utf8' }));

  // Initial tree: main.min.js is newest. Then only main.min.js changes, then
  // a leaf module changes, and finally the runtime tree is empty.
  assert.deepEqual(result.versions, result.expected);
  assert.ok(Number(result.versions[1]) > Number(result.versions[0]));
  assert.ok(Number(result.versions[2]) > Number(result.versions[1]));
  assert.equal(result.versions[3], 'theme-fallback');
});