Serverless test CLI

Serverless Framework
1

Hello everyone,
quick question: I’d like to implement some simple HTTP API tests and JSON validations using the serverless CLI test command and the serverless.test.yml, is it still supported as described in this page: Serverless Dashboard - Testing?
I’ll move to Jest later but for now this would have been enough.

I have the serverless.yml api function as below:

functions:
  api:
    handler: app.handler
    events:
      - httpApi: "*"

And this serverless.test.yml:

name: "Categories list"
  endpoint:
    function: api
    method: POST
    path: /categories
  response:
    status: 200

Trying the command just tells me this:

$ serverless test
Running "serverless" from node_modules
Environment: darwin, node 16.16.0, framework 3.20.0 (local) 3.22.0v (global), plugin 6.2.2, SDK 4.3.2

Error:
Run "serverless" to configure your service for testing.

Any advice on this?

Thanks a lot in advance.
Davide