Jenkinsfile

#!/usr/bin/env groovy

node {
  stage('Build') {
    sh 'make'
  }
  stage('Test') {
    sh 'make check' /* if this returns non-zero, the Pipeline stops */
    junit 'reports/**/*.xml'
    /* otherwise...we could: */
    if (currentBuild.result == 'UNSTABLE') {
      return
    }
  }
  stage('Deploy') {
    /* .. snip .. */
  }
}

Actually I found that lines 11 to 13 should be moved outside the stage to work propertly