[TAP5-2340] Make proxies honor Java 8 default methods

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.4
• Component/s: plastic
• Assignee: Howard Lewis Ship
• Reporter: Peter Niederwieser
• Created: 27/May/14 13:35
• Updated: 02/Aug/14 04:21
• Resolved: 01/Aug/14 18:57

Description

MyInterface.java:

public interface MyInterface {
  default int compute() { return 42; }
}

PlasticSpec.groovy:

class PlasticSpec extends Specification {
  def "plastic proxy for interface with default method"() {
    def manager = PlasticManager.withClassLoader(getClass().classLoader).create()
    def proxy = manager.createProxy(MyInterface, {})
    def impl = proxy.newInstance()

    expect:
    impl.compute() == 42 // fails; actual: 0
  }

  def "manual implementation of interface with default method"() {
    def impl = new MyInterface() {}

    expect:
    impl.compute() == 42 // passes
  }
}

Tested with 5.4-beta-6.