import { uuidTransformer } from '@/utils/uuidTransformer';
import { NIL } from 'uuid';

describe('uuidTransformer util', () => {
  const transformer = uuidTransformer;
  beforeEach(() => {});

  it('Should have a to member', () => {
    expect(transformer.to).toBeDefined();
  });

  it('Should have a from member', () => {
    expect(transformer.from).toBeDefined();
  });

  it('From method should return a nil uuid if null is passed', () => {
    expect(transformer.from(null)).toBe(NIL);
  });

  it('From method should return a nil uuid if empty 16 length buffer is passed', () => {
    expect(transformer.from(Buffer.alloc(16))).toBe(NIL);
  });

  it('To method should return a buffer matching the uuid', () => {
    expect(transformer.to(NIL)).toEqual(Buffer.alloc(16));
  });
});