Problem

It seems that in a pipeline, Groovy closures are returned early if you call a method inside them. The closure then only returns the return value of the called method. I provided a minimal sample to reproduce the bug below.

Steps to Reproduce

• Execute the following code in a Jenkins pipeline

  class Foo {
      Closure<String> cl = { String a ->
          return "Say: ${this.bar(a)}"
      }
      String bar(String a) {
          return "Hello ${a}."
      }
  }
  Foo f = new Foo()
  String output = f.getCl()("World")
  echo(output)
  

• It does not matter if the code is executed in the sandbox or not
• The expected output, as tested with Groovy 2.4.7 locally, is:
  • Say: Hello World.
• Jenkins however outputs:
  • Hello World.