npm test fails with Jest

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Category:Languages

When I want to run my project with the command npm run test, I get the error below. What is causing this?

FAIL ● Test suite failed to run  SecurityError: localStorage is not available for opaque origins at Window.get localStorage [as localStorage] (node_modules/jsdom/lib/jsdom/browser/Window.js:257:15)       at Array.forEach (<anonymous>) 

 


In case, if you are accessing your application with a http://localhost prefix, you need to update your jest configuration (in your jest.config.js) as,

  "jest": {     "verbose": true,     "testURL": "http://localhost/"   } 

In case you do not already have any jest configuration, just include the configuration in your package.json. For example:

{   "name": "...",   "description": "...",   ...   "jest": {     "verbose": true,     "testURL": "http://localhost/"   } } 

or in jest.config.js :

module.exports = {   verbose: true,   testURL: "http://localhost/",   ... } 

or if you have projects configured:

module.exports = {   verbose: true,    projects: [{     runner: 'jest-runner',     testURL: "http://localhost/",      // ...   }] } 

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