Environment variables get reset between gradle tasks (Jenkins)

Question

I need to pass environment variables to my executable and my unit tests. This works locally but not on Jenkins. On Jenkins, my environment variable gets reset in between gradle tasks

task setupEnv(type: Exec) {
    commandLine 'export', "ABC=def"
}

test {
    dependsOn 'setupEnv'
    scanForTestClasses = false
    include '**/*Test.*'
}

Note: I'm simplifying here for SO (I'm aware of the environment command in Gradle) but even with this simple example it works locally but not on Jenkins, meaning *Test.java files see nothing for System.getEnv("ABC"). I'm looking at how to not have Jenkins reset environment variables

Answer 1

There are two options to set dynamical env in pipeline. As a result these envs will be available globally (to all stages in the pipeline):

1. set it in a stage

    stage('set date') {
      steps {
        script {
          env.ANY_NAME_OF_THE_SCRIPT=sh(returnStdout: true, script: "date +%Y-%m-%d").trim()
        }
      }
    }

2. set it in environment

    pipeline {
      agent {
        label 'some_label'
      }  
      environment {
        HELLO = """${sh(
          returnStdout: true,
          script: 'echo hello'
            ).trim()}"""
      }
    }