Merging base-config into molecule.yml and read all variables on create.yml/destroy.yml

[gaby fulchic]

Hey hello,

I'm trying to integrate molecule in my company, and i've actually a little problem. I'm searching how to minimize the molecule.yml for tech users, like this they should at least edit few arguments, write tests and their roles are prod ready.
So i went to --base-config because it looked good !
I tried to use it and i encountered a first issue linked to this PR (https://github.com/ansible/molecule/pull/2287).
It was merged so I installed 3.0a4 version to test it.

But when i use my base-config and test my role i get that :

My env :


My base-config :
---
dependency:
  name: galaxy
driver:
  name: docker
lint:
  name: yamllint
  options:
    config-file: ../../.yamllint
platforms:
  - name: molecule-role-deb
    image: jrei/systemd-debian:9
    dockerfile: ../../../../test/molecule/Dockerfile.j2
    command: /lib/systemd/systemd
    env:
      container: docker
  - name: molecule-role-rhel
    image: jrei/systemd-centos:7
    dockerfile: ../../../../test/molecule/Dockerfile.j2
    command: /lib/systemd/systemd
    env:
      container: docker
provisioner:
  name: ansible
  log: true
  playbooks:
    create: ../../../../test/molecule/create-3.0a4.yml
    destroy: ../../../../test/molecule/destroy-3.0a4.yml
    converge: ../shared_files/converge.yml
  inventory:
    links:
      host_vars: ../../../../inventories/molecule/host_vars
  lint:
    name: ansible-lint
scenario:
  converge_sequence:
    - dependency
    - create
    - prepare
    - converge
    - destroy
  test_sequence:
    - lint
    - destroy
    - dependency
    - syntax
    - create
    - prepare
    - converge
    - idempotence
    - side_effect
    - verify
    - destroy
verifier:
  name: testinfra
  directory: ../shared_files/tests
  options:
    vvv: true
  lint:
    name: flake8


My molecule.yml :
---
platforms:
  - name: molecule-bash-deb
  - name: molecule-bash-rhel
scenario:
  name: default

But, when i decide to delete on my molecule.yml the platforms part and i only let the scenario one, all works fine.
Maybe that the overriding act is not supported or maybe am i doing it wrongly !
Do you think that i should submit a github issue or is it the molecule wanted behavior ?

Thank you in advance,
Warmly Zweeking

[sio...@gmail.com]

I confirm the described behaviour. I think it's as expected. List values are not merged when merging YAML trees.