import { describe, it, expect } from 'vitest';
import { paramsSerializer } from '@/lib/paramsSerializer';

describe('paramsSerializer', () => {
  it('flattens nested objects', () => {
    expect(paramsSerializer({ pageable: { page: 0, size: 10 } })).toBe(
      'page=0&size=10',
    );
  });

  it('repeats array values', () => {
    expect(paramsSerializer({ sort: ['name,asc', 'id,desc'] })).toBe(
      'sort=name%2Casc&sort=id%2Cdesc',
    );
  });

  it('omits null and undefined', () => {
    expect(paramsSerializer({ a: 1, b: null, c: undefined })).toBe('a=1');
  });
});