pipeline {
  agent { 
    label 'linux' 
  }
  stages {
    stage('Successful stage') {
      steps {
        script {
          sh "sleep 15" // intentionally not using sleep 15 step!
        }
      }
    }
  }
  post {
    success {
      echo "Triggered post-success"
    }
    failure {
      echo "Triggered post-failure"
    }
    unstable {
      echo "Triggered post-unstable"
    }
    aborted {
      echo "Triggered post-aborted"
    }
  }
}

[Pipeline] // stage
[Pipeline] stage
[Pipeline] { (Declarative: Post Actions)
[Pipeline] echo
Triggered post-aborted
[Pipeline] echo
Triggered post-failure
[Pipeline] }