Angular configuration when using Jest

Question

I've recently switched to Jest for unit testing

Previously I was doing this:

ng test --configuration=unit-tests

But I am not sure how to run my Jest tests with an Angular configuration, I want something like this:

jest --configuration=unit-tests

How do I run my Jest tests with a specified Angular configuration?

vitaliy kotov · Accepted Answer · 2021-02-02 13:49:44Z

1

In angular.json file specify jest runner for test architect:

"test": {
   "builder": "@angular-builders/jest:run",
   "options": {}
},

I assume that you have installed it, when switched to jest

answered Feb 2, 2021 at 13:49

vitaliy kotov

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1 Comment

danday74 Over a year ago

thanks this is good to know and I will use this in my personal project, however, my works project is too far gone for this to ever work - ill have to try and hack it - but much appreciated

Sumith Ekanayake · Accepted Answer · 2021-05-26 16:24:50Z

1

Created a setupJest.ts file in the root and import jest-preset-angular
add the Jest configuration in the package.json

"jest": {
    "preset": "jest-preset-angular",
    "setupFilesAfterEnv": [
      "<rootDir>/setupJest.ts"
    ]
  }

modify the test script to use Jest instead of ng test.
run npm test

answered May 26, 2021 at 16:24

Sumith Ekanayake

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