[question] How to do jest unit testing?

[ziacik]

Default template doesn't add any test target.
I'd like to use TDD to develop my app.
How can I enable jest unit testing?

I tried to use the configuration mentioned here #8
But that just runs the app on the device.

I'd like it to be true unit tests, not e2e tests (i.e. it shouldn't be run on the device).