How to setup worker in unit test in Create-React-App?

What are you trying to achieve? Please describe.

Run a test that loads a pdf from local file in a CRA app.

Describe solutions you’ve tried

I have tried putting the following at the top of my unit test file

import { pdfjs } from 'react-pdf';
pdfjs.GlobalWorkerOptions.workerSrc = `//cdnjs.cloudflare.com/ajax/libs/pdf.js/${pdfjs.version}/pdf.worker.min.js`;

but i get the following error

setting up fake worker failed: "Cannot find module '//cdnjs.cloudflare.com/ajax/libs/pdf.js/2.5.207/pdf.worker.min.js' from '../../node_modules/pdfjs-dist/build/pdf.js'".

Environment

“react-scripts”: “^4.0.1”, “react-pdf”: “^5.1.0”, “react”: “^17.0.1”,

[maksimf]

  "jest": {
    "moduleNameMapper": {
      "^react-pdf$": "react-pdf/dist/umd/entry.jest"
    }
  }

This solution has worked for me as well, the only thing I had to change though is this:

  "jest": {
    "moduleNameMapper": {
      "^react-pdf": "react-pdf/dist/umd/entry.jest"
    }
  },

I.e. removed $ cause I have:

import { Document, Page } from "react-pdf/dist/esm/entry.webpack";`)

[StephanBijzitter]

Well the above did indeed work, to some extend at least, for me as well. But now I’m getting this issue:

    Worker was terminated
      at ensureNotTerminated (node_modules/pdfjs-dist/build/webpack:/pdfjs-dist/build/pdf.worker/src/core/worker.js:169:15)
      at onFailure (node_modules/pdfjs-dist/build/webpack:/pdfjs-dist/build/pdf.worker/src/core/worker.js:343:9)