import { describe, it } from 'node:test';
import assert from 'node:assert/strict';
import { singleWord } from '../src/social.controller.js';

describe('singleWord', () => {
  it('strips @ and trims', () => {
    assert.equal(singleWord('@nasa '), 'nasa');
  });

  it('rejects multi-word input', () => {
    assert.throws(() => singleWord('two words'), /single-word/);
  });

  it('rejects empty input', () => {
    assert.throws(() => singleWord(''), /single-word/);
    assert.throws(() => singleWord(undefined), /single-word/);
  });
});