Groovy example source code file (WeakMapTest.groovy)

This example Groovy source code file (WeakMapTest.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Groovy tags/keywords

a, a, b, b, groovyshell, groovyshell, groovytestcase, script, size, size, string, weakmaptest

The Groovy WeakMapTest.groovy source code

package org.codehaus.groovy.reflection

class WeakMapTest extends GroovyTestCase{
   void testClassUnload () {
       GroovyShell shell = null
       int SIZE = 1000
       for (int i = 0; i != SIZE; ++i) {
           if (shell == null)
             shell = new GroovyShell ()

           Script s = shell.parse ("""
              class A extends B {
                def String callMe (b) {
                  b instanceof A ? this : b
                }
              }

              class B {
              }

              new A ().callMe ("lambda")
           """)
           s.run()

           ReflectionCache.isAssignableFrom s.class, s.class.superclass
           if (i % 10 == 0) {
               if (i % 50 == 0)
                 shell = null
               System.gc ()
            }

           if (shell != null)
             shell.classLoader.clearCache()
           GroovySystem.metaClassRegistry.removeMetaClass s.class.superclass
           GroovySystem.metaClassRegistry.removeMetaClass s.class
       }

       println "${SIZE} ${ClassInfo.size()}"
   }
}