Jest doesn't load environment variables (even with --setupFiles dotenv/config)

Question

I'm writing tests for my Express project, but when I run the test script my environment variables are not loaded.

In other threads people suggested using --setupFiles dotenv/config, which I did, but unfortunately it didn't work. I tried both adding it to my test script and to a jest.config.js file, but none worked. Does someone have any hint on how to fix this?

Context

This is how I setup jest on package.json:

"scripts": {
    "test": "jest --watchAll --setupFiles dotenv/config"
  },
"jest": {
    "testEnvironment": "node"
},

At the top of my app.js file, I load my environment variables with require('dotenv').config();

And this is my folder structure:

Allan Juan · Accepted Answer · 2020-04-26 13:52:11Z

2

Fixed it by moving .env file from the src/ folder to the root folder.

answered Apr 26, 2020 at 13:52

Allan Juan

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3 Comments

Tanishq Vyas Over a year ago

I already have it in my root folder. What should be done for this case?

ronak patel Over a year ago

@Allan Juan, This works perfectly fine, is there any solution for dotenv to pickup .env file anywhere in the project structure, like in my case it is present in src/

Allan Juan Over a year ago

You can use the path argument, like this: require('dotenv').config({ path: 'src/.env' }). Docs

winwiz1 · Accepted Answer · 2020-04-26 01:33:38Z

0

Have a look at this project. It uses both cross-env and dotenv to pass env variables to Express:

cross-env NODE_ENV=production node -r dotenv/config ./build/srv/main.js

Alternatively the sibling project uses cross-env only.

Disclosure: I'm the author of the above 'crisp' projects.

edited Apr 26, 2020 at 1:33

answered Apr 26, 2020 at 0:28

winwiz1

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2 Comments

Allan Juan Over a year ago

Isn't crossenv intended to fix platform compatibility problems? Correct me if I'm wrong, I'm just not seeing how this could help. The env variables are being loaded when I run the server, they are not loaded only when I run tests.

winwiz1 Over a year ago

This entry (from the scripts section of package.json): "test": "cross-env NODE_ENV=test jest" will load env variable(s) only when you run tests by executing yarn test.

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