/* 
 * Copyright (c) 2003-2008Israfil Consulting Services Corporation
 * Copyright (c) 2003-2008 Christian Edward Gruber
 * All Rights Reserved
 *
 * $Id: Types.java 129 2006-12-31 23:20:02Z cgruber $
 */
package net.israfil.foundation.valuemodel;

import net.israfil.foundation.core.Copyright;

import org.testng.Assert;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;

/**
 * Tests for ValueHolder
 * 
 * @author <a href="mailto:cgruber@israfil.net">Christian Edward Gruber</a>
 * @author Latest: $Author: cgruber $
 * @version $Revision: 129 $
 */
@Copyright(years={"2003","2004","2005","2006","2007","2008"},owner="Israfil Consulting Services Corporation",license="BSD")
@Test
public class ValueHolderTest {

    private String stringValue = null;
    private Integer integerValue = null;
    private ValueHolder<String> stringValueHolder = null;
    private ValueHolder<Integer> integerValueHolder = null;

	@BeforeMethod
	protected void setUp() throws Exception {
        stringValue = "String Value";
        integerValue = new Integer(5);
        stringValueHolder = new ValueHolder<String>(stringValue);
        integerValueHolder = new ValueHolder<Integer>(integerValue);
	}

	@AfterMethod
	protected void tearDown() throws Exception {
        stringValue = null;
        integerValue = null;
        stringValueHolder = null;
        integerValueHolder = null;
	}

	/*
	 * Test for void ValueHolder(Object)
	 */
	public void testValueHolderObject() {
        String valueString = "Value";
        ValueHolder<String>valueHolder = new ValueHolder<String>(valueString);
        Assert.assertEquals(valueString,valueHolder.get());
	}

	public void testGetValue() {
        Assert.assertEquals(stringValue,stringValueHolder.get());
        Assert.assertEquals(integerValue,integerValueHolder.get());
	}

    public void testSetValueObject() {
        String stringValue2 = "String Value 2";
        stringValueHolder.set(stringValue2);
        Assert.assertEquals(stringValue2,stringValueHolder.get());
    }
    
    public void testAddObserverObjectString() {
        String stringValue2 = "String Value 2";
        CallbackObject<String> callback = new CallbackObject<String>(stringValueHolder);
        stringValueHolder.addObservers("notifyMe:java.lang.Object:java.lang.Object:java.lang.Object",callback);
        stringValueHolder.set(stringValue2);
        Assert.assertTrue(callback.notified);
    }
    public void testRemoveObserverObjectString() {
        String stringValue2 = "String Value 2";
        CallbackObject<String> callback = new CallbackObject<String>(stringValueHolder);
        stringValueHolder.addObservers("notifyMe:java.lang.Object:java.lang.Object:java.lang.Object",callback);
        stringValueHolder.removeObservers(callback);
        stringValueHolder.set(stringValue2);
        Assert.assertFalse(callback.notified);
    } 
    public void testAddApproverObjectString() {
        String stringValue2 = "String Value 2";
        CallbackObject<String> callback = new CallbackObject<String>(stringValueHolder);
        stringValueHolder.addVetoers("approve:java.lang.Object:java.lang.Object:java.lang.Object",callback);
        stringValueHolder.set(stringValue2);
        Assert.assertEquals(stringValue2,stringValueHolder.get());
        
        callback = new CallbackObject<String>(stringValueHolder);
        stringValueHolder.addVetoers("approve:java.lang.Object:java.lang.Object:java.lang.Object",callback);
        stringValueHolder.set(stringValue2);
        stringValueHolder.set(stringValue);
        Assert.assertEquals(stringValue2,stringValueHolder.get());
        Assert.assertFalse(stringValue.equals(stringValueHolder.get()));   
    }
    public void testRemoveApproverObjectString() {
        String stringValue2 = "String Value 2";
        CallbackObject<String> callback = new CallbackObject<String>(stringValueHolder);
        stringValueHolder.addVetoers("approve:java.lang.Object:java.lang.Object:java.lang.Object",callback);
        stringValueHolder.removeVetoers(callback);
        stringValueHolder.set(stringValue2);
        stringValueHolder.set(stringValue);
        Assert.assertEquals(stringValue,stringValueHolder.get());
        Assert.assertFalse(stringValue2.equals(stringValueHolder.get()));   
    }
    public void finalize() throws Throwable {
        stringValue = null;
        integerValue = null;
        stringValueHolder = null;
        integerValueHolder = null;
        super.finalize();
    }

    public class CallbackObject<E> {
        private final MutableValue<E> valueModel;
        public boolean notified = false;
        public Object oldValue = null;
        public Object newValue = null;
        public CallbackObject(MutableValue<E> valueModel) {
            this.valueModel = valueModel;
        }
        public void notifyMe(Object sender, Object oldValue, Object newValue) {
        	this.oldValue = oldValue;
        	this.newValue = newValue;
            Assert.assertEquals(this.valueModel,sender);
            notified = true;
        }
        public boolean approve(Object sender, Object oldValue, Object newValue) {
        	this.oldValue = oldValue;
        	this.newValue = newValue;
            Assert.assertEquals(this.valueModel,sender);
            if (!newValue.equals(stringValue)) return true;
            return false;
        }
        public void finalize() throws Throwable {
            this.oldValue = null;
            this.newValue = null;
            super.finalize();
        }
    }
}