/**
*******************************************************************************
* Copyright (C) 1996-2001, International Business Machines Corporation and    *
* others. All Rights Reserved.                                                *
*******************************************************************************
*
* $Source: /xsrl/Nsvn/icu/icu4j/src/com/ibm/icu/dev/test/lang/Attic/UCharacterIteratorTest.java,v $ 
* $Date: 2002/06/20 01:16:00 $ 
* $Revision: 1.2 $
*
*******************************************************************************
*/

package com.ibm.icu.dev.test.lang;


import com.ibm.icu.dev.test.TestFmwk;
import com.ibm.icu.impl.UnicodeCharacterIterator;
import com.ibm.icu.text.UTF16;

/**
* Testing class for UCharacterIterator
* @author Syn Wee Quek
* @since april 02 2002
*/
public final class UCharacterIteratorTest extends TestFmwk
{ 
	// constructor -----------------------------------------------------
  
	/**
	 * Constructor
	 */
  	public UCharacterIteratorTest()
  	{
  	}
  
  	// public methods --------------------------------------------------
  
  	/**
  	* Testing cloning
  	*/
  	public void TestClone()
  	{
     	 UnicodeCharacterIterator iterator = new UnicodeCharacterIterator("testing");
     	 UnicodeCharacterIterator cloned = (UnicodeCharacterIterator)iterator.clone();
     	 char completed = 0;
     	 while (completed != UnicodeCharacterIterator.DONE) {
     	 	completed = iterator.next();
     	 	if (completed != cloned.next()) {
     	 		errln("Cloned operation failed");
     	 	}
     	 }
  	}
  	
  	/**
  	 * Testing iteration
  	 */
  	public void TestIteration()
  	{
  		UnicodeCharacterIterator iterator  = new UnicodeCharacterIterator(
  		                                               ITERATION_STRING_);
  		UnicodeCharacterIterator iterator2 = new UnicodeCharacterIterator(
  		                                               ITERATION_STRING_);
  		if (iterator.first() != ITERATION_STRING_.charAt(0)) {
  			errln("Iterator failed retrieving first character");
  		}
  		if (iterator.last() != ITERATION_STRING_.charAt(
                                       ITERATION_STRING_.length() - 1)) {
  			errln("Iterator failed retrieving last character");
  		}                                               
  		if (iterator.getBeginIndex() != 0 || 
  		    iterator.getEndIndex() != ITERATION_STRING_.length()) {
  		    errln("Iterator failed determining begin and end index");
  		}  
  		iterator2.setIndex(0);
  		iterator.setIndex(0);
  		int ch = 0;
  		while (ch != UnicodeCharacterIterator.DONE_CODEPOINT) {
  			int index = iterator2.getIndex();
  			ch = iterator2.nextCodePoint();
  			if (index != ITERATION_SUPPLEMENTARY_INDEX) {
  				if (ch != (int)iterator.next() && 
  				    ch != UnicodeCharacterIterator.DONE_CODEPOINT) {
  					errln("Error mismatch in next() and nextCodePoint()"); 
  				}
  			}
  			else {
  				if (UTF16.getLeadSurrogate(ch) != iterator.next() ||
  				    UTF16.getTrailSurrogate(ch) != iterator.next()) {
  				    errln("Error mismatch in next and nextCodePoint for " +
  				          "supplementary characters");
  				}
  			}
  		}
  		iterator.setIndex(ITERATION_STRING_.length());
  		iterator2.setIndex(ITERATION_STRING_.length());
  		while (ch != UnicodeCharacterIterator.DONE_CODEPOINT) {
  			int index = iterator2.getIndex();
  			ch = iterator2.previousCodePoint();
  			if (index != ITERATION_SUPPLEMENTARY_INDEX) {
  				if (ch != (int)iterator.previous() && 
  				    ch != UnicodeCharacterIterator.DONE_CODEPOINT) {
  					errln("Error mismatch in previous() and " +
  					      "previousCodePoint()"); 
  				}
  			}
  			else {
  				if (UTF16.getLeadSurrogate(ch) != iterator.previous() || 
  				    UTF16.getTrailSurrogate(ch) != iterator.previous()) {
  				    errln("Error mismatch in previous and " +
  				          "previousCodePoint for supplementary characters");
  				}
  			}
  		}
  	}
    
    public static void main(String[] arg)
    {
        try
        {
            UCharacterIteratorTest test = new UCharacterIteratorTest();
            test.run(arg);
        }
        catch (Exception e)
        {
        	e.printStackTrace();
        }
    }
    
    // private data members ---------------------------------------------
    
    private static final String ITERATION_STRING_ =
					                    "Testing 1 2 3 \ud800\udc00 456";
	private static final int ITERATION_SUPPLEMENTARY_INDEX = 14;    
}