sfdx-lwc-jest' is not recognized as an internal or external command

Question

I am trying to run LWC Jest test, While i'm run this command:"sfdx force:lightning:lwc:test:run"

I am getting this error: 'sfdx-lwc-jest' is not recognized as an internal or external command,'.

Error body is:

C:\Testing\Auto59\test>sfdx force:lightning:lwc:test:run
'C:\Testing\Auto59\test\node_modules\@salesforce\sfdx-lwc-jest\bin\sfdx-lwc-jest' is not recognized as an internal or external command,
operable program or batch file.
Test run complete. Exited with status code: 1

Reference Link: https://github.com/salesforce/sfdx-plugin-lwc-test

Answer 1

This feature isn't installed by default.

You can add it via:

sfdx force:lightning:lwc:test:setup

Or:

npm install
npm install @salesforce/sfdx-lwc-jest --save-dev

(The first npm install is not a typo; this is used to install all other named packages in package.json and their dependencies.)

Once installed, the command should then work as documented.

You can read more about this in the documentation.