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Commons IO example source code file (XmlStreamWriterTest.java)

This example Commons IO source code file (XmlStreamWriterTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons IO tags/keywords

bytearrayoutputstream, bytearrayoutputstream, io, ioexception, ioexception, string, string, text_latin1, text_latin15, text_latin7, utf-16, utf-16be, utf-8, utf-8, util, xmlstreamwriter

The Commons IO XmlStreamWriterTest.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.io.output;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Arrays;

import junit.framework.TestCase;

/**
 * @author Herve Boutemy
 * @version $Id: XmlStreamWriterTest.java 1004737 2010-10-05 17:56:04Z niallp $
 */
public class XmlStreamWriterTest extends TestCase {
    /** french */
    private static final String TEXT_LATIN1 = "eacute: \u00E9";
    /** greek */
    private static final String TEXT_LATIN7 = "alpha: \u03B1";
    /** euro support */
    private static final String TEXT_LATIN15 = "euro: \u20AC";
    /** japanese */
    private static final String TEXT_EUC_JP = "hiragana A: \u3042";
    /** Unicode: support everything */
    private static final String TEXT_UNICODE = TEXT_LATIN1 + ", " + TEXT_LATIN7
            + ", " + TEXT_LATIN15 + ", " + TEXT_EUC_JP;

    private static String createXmlContent(String text, String encoding) {
        String xmlDecl = "<?xml version=\"1.0\"?>";
        if (encoding != null) {
            xmlDecl = "<?xml version=\"1.0\" encoding=\"" + encoding + "\"?>";
        }
        String xml = xmlDecl + "\n<text>" + text + "";
        return xml;
    }

    private static void checkXmlContent(String xml, String encoding, String defaultEncoding)
            throws IOException {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        XmlStreamWriter writer = new XmlStreamWriter(out, defaultEncoding);
        writer.write(xml);
        writer.close();
        byte[] xmlContent = out.toByteArray();
        assertEquals(encoding, writer.getEncoding());
        assertTrue(Arrays.equals(xml.getBytes(encoding), xmlContent));

    }

    private static void checkXmlWriter(String text, String encoding)
            throws IOException {
        checkXmlWriter(text, encoding, null);
    }

    private static void checkXmlWriter(String text, String encoding, String defaultEncoding)
            throws IOException {
        String xml = createXmlContent(text, encoding);
        String effectiveEncoding = encoding;
        if (effectiveEncoding == null) {
            effectiveEncoding = (defaultEncoding == null ? "UTF-8" : defaultEncoding);
        }
        checkXmlContent(xml, effectiveEncoding, defaultEncoding);
    }

    public void testNoXmlHeader() throws IOException {
        String xml = "<text>text with no XML header";
        checkXmlContent(xml, "UTF-8", null);
    }

    public void testEmpty() throws IOException {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        XmlStreamWriter writer = new XmlStreamWriter(out);
        writer.flush();
        writer.write("");
        writer.flush();
        writer.write(".");
        writer.flush();
        writer.close();
    }

    public void testDefaultEncoding() throws IOException {
        checkXmlWriter(TEXT_UNICODE, null, null);
        checkXmlWriter(TEXT_UNICODE, null, "UTF-8");
        checkXmlWriter(TEXT_UNICODE, null, "UTF-16");
        checkXmlWriter(TEXT_UNICODE, null, "UTF-16BE");
        checkXmlWriter(TEXT_UNICODE, null, "ISO-8859-1");
    }

    public void testUTF8Encoding() throws IOException {
        checkXmlWriter(TEXT_UNICODE, "UTF-8");
    }

    public void testUTF16Encoding() throws IOException {
        checkXmlWriter(TEXT_UNICODE, "UTF-16");
    }

    public void testUTF16BEEncoding() throws IOException {
        checkXmlWriter(TEXT_UNICODE, "UTF-16BE");
    }

    public void testUTF16LEEncoding() throws IOException {
        checkXmlWriter(TEXT_UNICODE, "UTF-16LE");
    }

    public void testLatin1Encoding() throws IOException {
        checkXmlWriter(TEXT_LATIN1, "ISO-8859-1");
    }

    public void testLatin7Encoding() throws IOException {
        checkXmlWriter(TEXT_LATIN7, "ISO-8859-7");
    }

    public void testLatin15Encoding() throws IOException {
        checkXmlWriter(TEXT_LATIN15, "ISO-8859-15");
    }

    public void testEUC_JPEncoding() throws IOException {
        checkXmlWriter(TEXT_EUC_JP, "EUC-JP");
    }

    public void testEBCDICEncoding() throws IOException {
        checkXmlWriter("simple text in EBCDIC", "CP1047");
    }
}

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