Test the env vars

get-env-vars.spec.ts

import { createUrl, Paths } from './get-env-vars'

describe("GetEnvVars", () => {

  const OLD_ENV = process.env;

  beforeEach(() => {
    process.env = { ...OLD_ENV };
    delete process.env.NODE_ENV;
  });

  afterEach(() => {
    process.env = OLD_ENV;
  });

  test('should create a new url', () => {
    process.env.BASE_URL = 'https://example.com';
    expect(createUrl(Paths.PRODUCTS)).toEqual(`${process.env.BASR_URL}/${Paths.PRODUCTS}`);
  });

})