package com.waldura.struts;

import java.util.Arrays;

import org.apache.struts.action.ActionForm;


public class ActionFormSerializerTest
	extends junit.framework.TestCase
{
    private final ActionFormSerializer afs = new ActionFormSerializer();
    
    public ActionFormSerializerTest(String name)
    {
    	super(name);
    }
    
    public void testHexConversion()
    {
        int b = afs.hexdigit('0');
        assertTrue("hex digit conversion failed", b == 0);
    
        b = afs.hexdigit('9');
        assertTrue("hex digit conversion failed", b == 9);
    
        b = afs.hexdigit('a');
        assertTrue("hex digit conversion failed", b == 10);
    
        b = afs.hexdigit('f');
        assertTrue("hex digit conversion failed", b == 15);
    }
    
    public void testEncode()
    {
    	final byte[] in = { 'z', 'a', 0xf, 0xa, 127, 'b', 'X', 0, -1, 1 };
    	final String out = "7a610f0a7f625800ff01";
    
    	String s = afs.encode(in);
    
    	assertEquals("encoding failed", out, s);
    }
    
    public void testFailedDecoding()
    {
    	assertFailedDecoding(afs, "000");
    	assertFailedDecoding(afs, "000g");
    }
    
    public static void assertFailedDecoding(ActionFormSerializer afs, String in)
    {
    	try
    	{
    	    afs.decode(in);
    
    		fail("decode should fail on odd digits");
    	}
    	catch (IllegalArgumentException iae)
    	{
    		// this is the success case; it should fail
    	}
    }
    
    public void testDecode()
    {
    	final String in = "7a610f0a7f625800ff01";
    	final byte[] out = { 'z', 'a', 0xf, 0xa, 127, 'b', 'X', 0, -1, 1 };
    
    	byte[] buf = afs.decode(in);
    
    	assertTrue("encoding failed", Arrays.equals(out, buf));
    }
    
    public void testEncodeDecode()
    {
    	// binary data
    	final byte[] in = { 'z', 'a', 0xf, 0xa, 127, 'b', 'X', 0, -1, 1 };
    
    	String temp = afs.encode(in);
    	byte[] out = afs.decode(temp);
    
    	assertTrue("encoding failed", Arrays.equals(in, out));
    }
    
    public void testSerializeDeserialize()
    	throws java.io.IOException, ClassNotFoundException
    {
    	ActionForm orig = new ActionForm() {};
    	ActionForm copy = afs.deserialize( afs.serialize(orig) );
    
    	assertNotNull("serialization failed", copy);
    }
}