NODE_ENV with Jest

Question

I am migrating from Mocha to Jest. My test imports the config package, which selects a configuration file or another depending on the NODE_ENV environment variable. However, it looks like NODE_ENV is found while running the test from Jest

Next line does not work (that is, NODE_ENV is ignored):

 NODE_ENV=test jest test/*.js --notify --config jest.config.json

As a consequence the config package reports:

console.error node_modules/config/lib/config.js:1727
WARNING: NODE_ENV value of 'test' did not match any deployment config file names. 

Do you know how to include NODE_ENV?

Answer 1

The warning is from the Strict-Mode. So what you have to do here is..

1. Create a file called test.json inside config/
2. Add NODE_ENV value as test

That should work