hasProperty does not work as expected when used on the this-context of a pipeline script. It should return true for existing parameter and false for non-existing parameter but it returns null in both cases. getProperty in contrast works as expected.

Steps to reproduce:

 Create parameterized Pipeline job with following parameters:

• string parameter myProperty and value "present" and the following pipeline script

• // Pipeline Script
  pipeline {
      agent none
      stages {
          stage('HasPropertyTest') {
              steps {
                  script {
                      echo "Value of 'myProperty': ${getProperty("myProperty")}"
                      echo "Got: ${hasProperty("myProperty")} - expected ${true}"
                      try {
                          echo "Value of 'missingProperty' ${getProperty("missingProperty")}"
                      } catch (MissingPropertyException) {
                          echo "Parameter 'missingProperty' does not exist."
                      }
                      echo "Got: ${hasProperty("missingProperty")} - expected ${false}"
                      if(hasProperty("myProperty")) {
                          // success
                      } else {
                          error "No Property: myProperty"
                      }
                  }
              }
          }
      }
  }
  
  

• No Groovy Sandbox

Got Output:

Running in Durability level: MAX_SURVIVABILITY
[Pipeline] stage
[Pipeline] { (HasPropertyTest)
[Pipeline] script
[Pipeline] {
[Pipeline] echo
Value of 'myProperty': present
[Pipeline] echo
Got: null - expected true
[Pipeline] echo
Parameter 'missingProperty' does not exist.
[Pipeline] echo
Got: null - expected false
[Pipeline] error
[Pipeline] }
[Pipeline] // script
[Pipeline] }
[Pipeline] // stage
[Pipeline] End of Pipeline
ERROR: No Property: myProperty
Finished: FAILURE

Expected Output:

Running in Durability level: MAX_SURVIVABILITY
[Pipeline] stage
[Pipeline] { (HasPropertyTest)
[Pipeline] script
[Pipeline] {
[Pipeline] echo
Value of 'myProperty': present
[Pipeline] echo
Got: true - expected true
[Pipeline] echo
Parameter 'missingProperty' does not exist.
[Pipeline] echo
Got: false - expected false
[Pipeline] }
[Pipeline] // script
[Pipeline] }
[Pipeline] // stage
[Pipeline] End of Pipeline
Finished: SUCCESS