// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.encryption.symmetric;

import junit.framework.*;

public class AlphaNumericConstrainedSymmetricEncryptorTest extends TestCase
{
    public static TestSuite suite()
    {
        return new TestSuite( AlphaNumericConstrainedSymmetricEncryptorTest.class );
    }

    public AlphaNumericConstrainedSymmetricEncryptorTest( String name )
    {
        super( name );
    }

    public static void main( String[] args )
    {
        junit.textui.TestRunner.run( suite() );
    }

    SymmetricEncryptor SE = AlphaNumericConstrainedSymmetricEncryptor.INSTANCE;

    public void test_Null()
            throws Exception
    {
        String zText = null;
        String zEncoded = SE.encrypt( zText );
        assertEquals( zText, SE.decrypt( zEncoded ) );
    }

    public void test_SingleLowerCaseLetter()
            throws Exception
    {
        String zText = "f";
        String zEncoded = SE.encrypt( zText );
        assertEquals( zText, SE.decrypt( zEncoded ) );
        assertEquals( "Y", zEncoded );
    }

    public void test_TwoLowerCaseLetter()
            throws Exception
    {
        String zText = "fo";
        String zEncoded = SE.encrypt( zText );
        assertEquals( zText, SE.decrypt( zEncoded ) );
        assertEquals( "YI", zEncoded );
    }

    public void test_ShortWithWrapLowerCaseLetter()
            throws Exception
    {
        String zText = "fosy";
        String zEncoded = SE.encrypt( zText );
        assertEquals( zText, SE.decrypt( zEncoded ) );
        assertEquals( "YIDF", zEncoded );
    }

    public void test_SimpleLowerCase()
            throws Exception
    {
        String zText = "foxes are ussually hot";
        String zEncoded = SE.encrypt( zText );
        assertEquals( zText, SE.decrypt( zEncoded ) );
        assertEquals( "YIIsN2cb2BKQm2bo2CDb0BtK0M2ch2BRGE", zEncoded );
    }

    public void test_ShortWithWrapUpperCaseLetter()
            throws Exception
    {
        String zText = "FOSY";
        String zEncoded = SE.encrypt( zText );
        assertEquals( zText, SE.decrypt( zEncoded ) );
        assertEquals( "gIDF", zEncoded );
    }

    public void test_ShortWithWrapMixedCaseLetter()
            throws Exception
    {
        String zText = "FosY";
        String zEncoded = SE.encrypt( zText );
        assertEquals( zText, SE.decrypt( zEncoded ) );
        assertEquals( "g2ANDz", zEncoded );
    }

    public void test_Punc()
            throws Exception
    {
        String zText = "/:,.;?-+()@$%'!\"";
        String zEncoded = SE.encrypt( zText );
        assertEquals( zText, SE.decrypt( zEncoded ) );
        assertEquals( "2acKnBMDrbcAW2aaABfA", zEncoded );
    }

    public void test_Digits()
            throws Exception
    {
        String zText = "0123456789";
        String zEncoded = SE.encrypt( zText );
        assertEquals( zText, SE.decrypt( zEncoded ) );
        assertEquals( "2abAAAAAAAAA", zEncoded );
    }

    public void test_UnsupportedPunc()
            throws Exception
    {
        String zText = "=";
        String zEncoded = SE.encrypt( zText );
        assertEquals( zText, SE.decrypt( zEncoded ) );
        assertEquals( "p", zEncoded );
    }

    public void test_LongString()
            throws Exception
    {
        String zText = "The rain in Spain falls\r\n" + //
                       "mainly in the plain!\r\n" + //
                       "However, this doesn't mean\r\n" + //
                       "that it rains <b><i>\"most\"</i></b> of the time\r\n" + //
                       "on that plain in Spain!\r\n";
        String zEncoded = SE.encrypt( zText );
        assertEquals( zText, SE.decrypt( zEncoded ) );
    }
}