to Trigger one pipeline after another and also triggered by every changes

Question

I have 2 pipelines. i need B pipeline to run after A pipeline completes and I also need B pipeline to triggers by Every test branch changes. I am not sure if using resources and trigger at the same file (B pipeline) is correct?

trigger:
  batch: true
  branches:
    include:
      - test

resources:
  pipelines:
  - pipeline: A
    source: A
    trigger: true