Groovy example source code file (NestedClosure2Bug.groovy)

This example Groovy source code file (NestedClosure2Bug.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

nestedclosure2bug, nestedclosure2bug, object, object, testsupport, testsupport

The Groovy NestedClosure2Bug.groovy source code

/*
 * Copyright 2003-2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package groovy.bugs

/**
 * @version $Revision: 20569 $
 */
class NestedClosure2Bug extends TestSupport {
     
    Object f
     
    void testFieldBug() {
        def closure = {
            return {
                f = 123
                return null
            }
        }
        def value = closure()
        value = value()
        assert f == 123
    }
     
    void testBugOutsideOfScript() {
        def a = 123
        def b = 456
        def closure = {
            println b
            def c = 999
            return {
                f = 2222111
                
                println f
                
                println c
                def d = 678
                return { 
                    println f
                    assert f == 2222111
                    println d
                    return a
                }
            }
        }
        def c2 = closure()
        def c3 = c2()
        def value = c3()

        assert f == 2222111        
        assert value == 123
    }
    
    void testBug() {
        assertScript """
            def a = 123
            def closure = {
                return {
                    return { 
                        return a
                    }
                }
            }
            def c2 = closure()
            def c3 = c2()
            value = c3()
            
            assert value == 123
"""
    }
}