Utf8StringBuilderTest.java

// ========================================================================
// Copyright (c) 2006-2009 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
// You may elect to redistribute this code under either of these licenses.
// ========================================================================

package org.eclipse.jetty.util;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import org.junit.Test;

public class Utf8StringBuilderTest
{
    @Test
    public void testInvalid() throws Exception
    {
        String[] invalids =
        { "c0af", "EDA080", "f08080af", "f8808080af", "e080af", "F4908080", "fbbfbfbfbf", "10FFFF",
          "CeBaE1BdB9Cf83CeBcCeB5EdA080656469746564" };

        for (String i : invalids)
        {
            byte[] bytes = TypeUtil.fromHexString(i);
            try
            {
                Utf8StringBuilder buffer = new Utf8StringBuilder();
                buffer.append(bytes,0,bytes.length);

                assertEquals(i,"not expected",buffer.toString());
            }
            catch (Utf8Appendable.NotUtf8Exception e)
            {
                assertTrue(i,true);
            }
        }
    }

    @Test
    public void testUtfStringBuilder() throws Exception
    {
        String source = "abcd012345\n\r\u0000\u00a4\u10fb\ufffdjetty";
        byte[] bytes = source.getBytes(StringUtil.__UTF8);
        Utf8StringBuilder buffer = new Utf8StringBuilder();
        for (byte aByte : bytes)
            buffer.append(aByte);
        assertEquals(source,buffer.toString());
        assertTrue(buffer.toString().endsWith("jetty"));
    }

    @Test(expected = IllegalArgumentException.class)
    public void testShort() throws Exception
    {
        String source = "abc\u10fb";
        byte[] bytes = source.getBytes(StringUtil.__UTF8);
        Utf8StringBuilder buffer = new Utf8StringBuilder();
        for (int i = 0; i < bytes.length - 1; i++)
            buffer.append(bytes[i]);
        buffer.toString();
    }

    @Test
    public void testLong() throws Exception
    {
        String source = "abcXX";
        byte[] bytes = source.getBytes(StringUtil.__UTF8);
        bytes[3] = (byte)0xc0;
        bytes[4] = (byte)0x00;

        Utf8StringBuilder buffer = new Utf8StringBuilder();
        try
        {
            for (byte aByte : bytes)
                buffer.append(aByte);
            assertTrue(false);
        }
        catch (IllegalArgumentException e)
        {
            assertTrue(true);
        }
        assertEquals("abc\ufffd",buffer.toString());
    }

    @Test
    public void testUTF32codes() throws Exception
    {
        String source = "\uD842\uDF9F";
        byte[] bytes = source.getBytes("UTF-8");

        String jvmcheck = new String(bytes,0,bytes.length,"UTF-8");
        assertEquals(source,jvmcheck);

        Utf8StringBuilder buffer = new Utf8StringBuilder();
        buffer.append(bytes,0,bytes.length);
        String result = buffer.toString();
        assertEquals(source,result);
    }
}