/*
 * Copyright (c) 2007, Sun Microsystems, Inc.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  * Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright 
 *    notice, this list of conditions and the following disclaimer in 
 *    the documentation and/or other materials provided with the distribution.
 *  * Neither the name of Sun Microsystems, Inc. nor the names of its 
 *    contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

/* Anagram Game Application */

package com.toy.anagrams.lib;

import org.javaone.anagram.lib.WordLibrary;
import java.util.Arrays;
import junit.framework.TestCase;

/**
 * Test of the functionality of {@link WordLibrary}.
 */
public class WordLibraryTest extends TestCase {
    WordLibrary wordLibrary;

    public WordLibraryTest(String testName) {
        super(testName);
    }

    protected void setUp() throws Exception {
        wordLibrary = WordLibrary.getDefault();
    }
    
    

    /**
     * Test of {@link WordLibrary#isCorrect}.
     */
    public void testIsCorrect() {
        for (int i = 0; i < wordLibrary.getSize(); i++) {
            String clearWord = wordLibrary.getWord(i);
            String scrambledWord = wordLibrary.getScrambledWord(i);
            assertTrue("Scrambled word \"" + scrambledWord +
                       "\" at index: " + i +
                       " does not represent the word \"" + clearWord + "\"",
                       isAnagram(clearWord, scrambledWord));
        }
    }

    /**
     * Tests whether given anagram represents the word.
     * @param clearWord The word in clear text
     * @param scrambledWord Scrambled version of the word
     * @return true if the scrambledWord is correct anagram of clearWord
     */
    private boolean isAnagram(String clearWord, String scrambledWord) {
        char[] clearArray = clearWord.toCharArray();
        char[] scrambledArray = scrambledWord.toCharArray();
        Arrays.sort(clearArray);
        Arrays.sort(scrambledArray);
        return Arrays.equals(clearArray, scrambledArray);
    }

}
