/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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 org.apache.tools.ant;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;


public class UnknownElementTest extends BuildFileTest {
    public void setUp() {
        configureProject("src/etc/testcases/core/unknownelement.xml");
    }
    public void testMaybeConfigure() {
        // make sure we do not get a NPE
        executeTarget("testMaybeConfigure");
    }

    public static class Child extends Task {
        Parent parent;
        public void injectParent(Parent parent) {
            this.parent = parent;
        }
        public void execute() {
            parent.fromChild();
        }
    }

    public static class Parent extends Task implements TaskContainer {
        List children = new ArrayList();
        public void addTask(Task t) {
            children.add(t);
        }

        public void fromChild() {
            log("fromchild");
        }
        
        public void execute() {
            for (Iterator i = children.iterator(); i.hasNext();) {
                UnknownElement el = (UnknownElement) i.next();
                el.maybeConfigure();
                Child child = (Child) el.getRealThing();
                child.injectParent(this);
                child.perform();
            }
        }
    }
}