rjpkuyper

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

describe("GetProducts", () => {

  const products = [{ id: 1 }];
  const url = 'https://example.com'

  const httpGet = jest.fn().mockResolvedValue({
    json: jest.fn().mockResolvedValue(products)
  });

rjpkuyper

export enum Paths {
  PRODUCTS = '/products'
}

export const createLogger = (logger) => {
  error: e => logger.error(`Something bad happened today: ${e}`)
}

export const createUrl = (path: Paths, url = process.env.BASE_URL) => `${url}${path}`

rjpkuyper

import { createUrl, getProducts, Paths } from './get-env-vars'
import * as fns from './get-env-vars'

describe("GetEnvVars", () => {

  const MOCKED_PRODCUTS = [{ id: 1 }];

  global.fetch = jest.fn(() => Promise.resolve({
      json: () => Promise.resolve(MOCKED_PRODCUTS)
  }));

rjpkuyper

export enum Paths {
  PRODUCTS = '/products'
}

export const createLogger = () => {
  error: e => console.error(`Something bad happened today: ${e}!`)
}

export const loggerService = createLogger()

rjpkuyper

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

describe("GetProducts", () => {

  const products = [{ id: 1 }];

  const httpGet = jest.fn().mockResolvedValue({
      json: jest.fn().mockResolvedValue(products)
  });
  

rjpkuyper

export enum Paths {
  PRODUCTS = '/products'
}

export const createUrl = (path: Paths, url = process.env.BASE_URL) => `${url}${path}`

export const getProducts = (
  httpGet = fetch,
  url: string = createUrl(Paths.PRODUCTS), 
) => httpGet(url).then(e => e.json())

rjpkuyper

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

describe("GetEnvVars", () => {

  const MOCKED_PRODUCTS = [{ id: 1 }];

  global.fetch = jest.fn(() => Promise.resolve({
      json: () => Promise.resolve(MOCKED_PRODUCTS)
  }));

rjpkuyper

export enum Paths {
  PRODUCTS = '/products'
}

export const createUrl = (path: Paths) => `${process.env.BASE_URL}${path}`

export const productsUrl = createUrl(Paths.PRODUCTS)

export const getProducts = () => fetch(productsUrl).then(e => e.json())

rjpkuyper

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

describe("GetEnvVars", () => {
  test('should create a new url', () => {
    const url = 'https://example.com'
    expect(createUrl(Paths.PRODUCTS, url)).toEqual(`${url}/${Paths.PRODUCTS}`);
  });
})

rjpkuyper

export enum Paths {
  PRODUCTS = '/products'
}

// pass the dependency, simply as optional variable
export const createUrl = (path: Paths, baseUrl = process.env.BASE_URL) => `${url}${path}`

export const productsUrl = createUrl(Paths.PRODUCTS)