Importing the Nock npm module creates error when running npm test

If I remove the nock import I won’t get an error message. I’ve already npm installed nock.

Test file

import configureMockStore from 'redux-mock-store'
import { promiseHandler } from '../middleware'
import * as actions from './index'
import nock from 'nock'
import expect from 'expect'

const middlewares = [promiseHandler]
const mockStore = configureMockStore(middlewares)

Error Message

FAIL  src/actions/index.test.js
Runtime Error
  - TypeError: debug is not a function
        at overrideClientRequest (node_modules/nock/lib/intercept.js:221:3)
        at activate (node_modules/nock/lib/intercept.js:320:3)
        at Object.<anonymous> (node_modules/nock/lib/intercept.js:383:1)
        at Runtime._execModule (node_modules/jest-cli/src/Runtime/Runtime.js:261:17)
        at Object.<anonymous> (node_modules/nock/lib/recorder.js:6:17)
        at Object.<anonymous> (node_modules/nock/index.js:1:135)
        at Object.<anonymous> (src/actions/index.test.js:4:39)
        at jasmine2 (node_modules/jest-jasmine2/src/index.js:252:16)
        at handle (node_modules/worker-farm/lib/child/index.js:41:8)
        at process.<anonymous> (node_modules/worker-farm/lib/child/index.js:47:3)
        at emitTwo (events.js:100:13)
        at process.emit (events.js:185:7)
        at handleMessage (internal/child_process.js:718:10)
        at Pipe.channel.onread (internal/child_process.js:444:11)

[tylerchilds]

Also confirming I was able to resolve this by putting this my package.json file:

  "jest": {
    "unmockedModulePathPatterns": [
      "<rootDir>/node_modules/nock",
      "<rootDir>/node_modules/redux-thunk",
      "<rootDir>/node_modules/redux-mock-store",
    ]
  }

[dannyid]

I’m having the same problem. If you’re using Jest, I believe you need to unmock these modules before using them because Jest will automock everything.

At the top of your file, add:

jest.unmock('nock');
jest.unmock('redux-mock-store');
jest.unmock('redux-thunk');