jest.setup.ts

import { config } from 'dotenv'
import 'jest-styled-components' // include style rules in snapshots
import fetchMock from 'jest-fetch-mock' // Mocks `fetch` calls in unittests

import { Readable } from 'stream'
import { TextDecoder, TextEncoder } from 'util'

// For simplicity, we will use CowSwap default .env for all projects and libs
config({ path: __dirname + '/apps/cowswap-frontend/.env' })

if (typeof global.TextEncoder === 'undefined') {
  global.ReadableStream = Readable as unknown as typeof globalThis.ReadableStream
  global.TextEncoder = TextEncoder
  global.TextDecoder = TextDecoder as typeof global.TextDecoder
}

fetchMock.dontMock()

jest.mock('react-markdown', () => () => null)

jest.mock('lottie-react', () => () => null)

jest.mock('quick-lru', () => {
  return {
    __esModule: true,
    default: class MockQuickLRU extends Map {
      constructor() {
        super()
      }
    },
  }
})

jest.mock('@cowprotocol/analytics', () => ({
  ...jest.requireActual('@cowprotocol/analytics'),
  initGtm: jest.fn().mockImplementation(() => ({
    sendEvent: jest.fn(),
  })),
  __resetGtmInstance: jest.fn(),
}))

beforeEach(() => {
  const { __resetGtmInstance } = require('@cowprotocol/analytics')
  __resetGtmInstance()
})