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

import { checkServerHealth } from '../../src/server/serverHealth.js';

test('server health checks cap count and concurrency', async () => {
  const servers = Array.from({ length: 300 }, (_, index) => ({
    id: `srv-${index}`,
    label: `Server ${index}`,
    host: `server-${index}.example`,
    port: 443,
  }));
  let active = 0;
  let peak = 0;
  const results = await checkServerHealth(servers, async () => {
    active += 1;
    peak = Math.max(peak, active);
    await new Promise((resolve) => setImmediate(resolve));
    active -= 1;
    return { ok: true, latency: 1 };
  });

  assert.equal(results.length, 30);
  assert.equal(peak, 4);
  assert.deepEqual(results.map(({ id }) => id), servers.slice(0, 30).map(({ id }) => id));
});