Environment Variables in Test

[mcgear]

Hey, I am curious as to if deno test supports the environment variables? It seems that maybe it doesn't as my tests do not work when they rely on environment variables. Variables are just set in a .env file, should this work with tests?

[bartlomieju]

Yes, you can access env vars in test using Deno.env APIs. How are you setting up these env vars from .env when running the tests?

[mcgear]

I just have the .env file in a format like

ENV_VARIABLE=the-value
...

What i did to get it working was create a .env.ts file and use the Deno.env.set("ENV_VARIABLE", "the-value"). And then in the test that needs the env variables, i just do an import '../../.env.ts'.

I was unable to get it working by simply having the .env file at the root (as does work in a deno run) context.

[mcgear]

I should also note this is the command i had tried at one point to try and register the .env file:

    "test": "deno test -A --unstable --allow-env .env tests/tests.ts --coverage=cov"

[dsherret]

I think you're wanting the --env feature. That will be coming hopefully in the next release: #20300

For now, there's the deno_std module: https://deno.land/std@0.203.0/dotenv/mod.ts

// add this to your code
import "https://deno.land/std@0.203.0/dotenv/load.ts";

[mcgear]

Perfect, thank you, this was exactly what i needed. Thanks again for the help.