@aller/blink/src/utils/__tests__/uuid.test.ts

A library for tracking user behaviour.

import generateUUID from '../uuid';

describe('generateUUID', () => {
  it('is not conistent when given no key', () => {
    const uuid = generateUUID();
    expect(generateUUID()).not.toBe(uuid);
  });

  it('UUID is 36 char long', () => {
    const uuid = generateUUID();
    expect(uuid.length).toBe(36);
  });

  it('is a string', () => {
    const uuid = generateUUID();
    expect(typeof uuid).toBe('string');
  });

  it('is consistent when given a domain key', () => {
    const uuid = generateUUID('pageView');
    expect(generateUUID('pageView')).toBe(uuid);
  });

  it('is 36 chars long when given a domain key', () => {
    const uuid = generateUUID('someDomain');
    expect(uuid.length).toBe(36);
  });

  it('is a string when given a domain key', () => {
    const uuid = generateUUID('xavierId');
    expect(typeof uuid).toBe('string');
  });

  it('is not the same as uuid in other domain', () => {
    const firstUuid = generateUUID('xavierId');
    const secondUuid = generateUUID('pageView');
    expect(firstUuid).not.toBe(secondUuid);
  });

  it('is consistent in domain regardless of call order', () => {
    const firstUuid = generateUUID('xavierId');
    const secondUuid = generateUUID('pageView');
    const thirdUuid = generateUUID('pageView');
    const fourthUuid = generateUUID('xavierId');
    expect(firstUuid).toBe(fourthUuid);
    expect(secondUuid).toBe(thirdUuid);
    expect(firstUuid).not.toBe(secondUuid);
    expect(thirdUuid).not.toBe(fourthUuid);
  });
});