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nu/xom/tests/DocTypeTest.java
/* Copyright 2002-2005 Elliotte Rusty Harold
   
   This library is free software; you can redistribute it and/or modify
   it under the terms of version 2.1 of the GNU Lesser General Public 
   License as published by the Free Software Foundation.
   
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
   GNU Lesser General Public License for more details.
   
   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the 
   Free Software Foundation, Inc., 59 Temple Place, Suite 330, 
   Boston, MA 02111-1307  USA
   
   You can contact Elliotte Rusty Harold by sending e-mail to
   [email protected]. Please include the word "XOM" in the
   subject line. The XOM home page is located at http://www.xom.nu/
*/

package nu.xom.tests;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;

import org.xml.sax.SAXException;
import org.xml.sax.XMLFilter;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLFilterImpl;
import org.xml.sax.helpers.XMLReaderFactory;

import nu.xom.Builder;
import nu.xom.DocType;
import nu.xom.Document;
import nu.xom.IllegalDataException;
import nu.xom.IllegalNameException;
import nu.xom.ParsingException;
import nu.xom.ValidityException;
import nu.xom.WellformednessException;

/**
 <p>
 *  Various tests for the <code>DocType</code> class.
 </p>
 
 @author Elliotte Rusty Harold
 @version 1.1b4
 *
 */
public class DocTypeTest extends XOMTestCase {

    
    public DocTypeTest(String name) {
        super(name);
    }
    
    
    String name = "MyName";
    String systemID = "http://www.w3.org/TR/some.dtd";
    String publicID = "-//Me//some public ID";


    // This class tests error conditions, which Xerces
    // annoyingly logs to System.err. This hides System.err 
    // before each test and restores it after each test.
    private PrintStream systemErr = System.err;
    private DocType doctypePublicID;
    private DocType doctypeSystemID;
    private DocType doctypeRootOnly;

    
    protected void setUp() {
        doctypePublicID = new DocType(name, publicID, systemID);
        doctypeSystemID = new DocType(name, systemID);
        doctypeRootOnly = new DocType(name);
        System.setErr(new PrintStream(new ByteArrayOutputStream()));
    }
    
    
    protected void tearDown() {
        System.setErr(systemErr);
    }
    
    
    public void testToXML() {
        
        String expected 
          "<!DOCTYPE " + name + " PUBLIC \"" 
            + publicID + "\" \"" + systemID + "\">";
        assertEquals(expected, doctypePublicID.toXML());    
        assertEquals(
          "<!DOCTYPE " + name + " SYSTEM \"" + systemID + "\">",
          doctypeSystemID.toXML()
        );    
        assertEquals(
          "<!DOCTYPE " + name + ">",
          doctypeRootOnly.toXML()
        );    
        
    }
    
    
    public void testToXMLWithInternalDTDSubset() 
      throws ValidityException, ParsingException, IOException {
        
        String data = "<?xml version=\"1.0\"?>\n" 
          "<!DOCTYPE root [\n  <!ELEMENT test (#PCDATA)>\n]>"
          "\n<test />\n";  
        Document doc = (new Builder()).build(data, null);
        String result = doc.toXML();
        assertEquals(data, result);    
        
    }  
    
    
    public void testToXMLWithCommentsInInternalDTDSubset() 
      throws ValidityException, ParsingException, IOException {
        
        String data = "<?xml version=\"1.0\"?>\n" 
          "<!DOCTYPE root [\n" +
                "  <!--comment-->\n  <!ELEMENT test (#PCDATA)>" +
            "\n  <!--comment-->\n]>"
          "\n<test />\n";  
        Document doc = (new Builder()).build(data, null);
        String result = doc.toXML();
        assertEquals(data, result);    
        
    }  
    
    
    public void testToXMLWithCommentsInInternalDTDSubsetAndVerifyingBuilder() 
      throws ValidityException, ParsingException, IOException, SAXException {
        
        String data = "<?xml version=\"1.0\"?>\n" 
          "<!DOCTYPE root [\n" +
                "  <!--comment-->\n  <!ELEMENT test (#PCDATA)>" +
            "\n  <!--comment-->\n]>"
          "\n<test />\n";  
        XMLFilter filter = new XMLFilterImpl();
        filter.setParent(XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser"));
        Document doc = (new Builder(filter)).build(data, null);
        String result = doc.toXML();
        assertEquals(data, result);    
        
    }  
    
    
    public void testToXMLWithProcessingInstructionsInInternalDTDSubset() 
      throws ValidityException, ParsingException, IOException {
        
        String data = "<?xml version=\"1.0\"?>\n" 
          "<!DOCTYPE root [\n" +
                "  <?target data?>\n  <!ELEMENT test (#PCDATA)>" +
            "\n  <?target?>\n]>"
          "\n<test />\n";  
        Document doc = (new Builder()).build(data, null);
        String result = doc.toXML();
        assertEquals(data, result);    
        
    }  
    
    
    public void testToXMLWithProcessingInstructionsInInternalDTDSubsetAndNonverifyingBuilder() 
      throws ValidityException, ParsingException, IOException, SAXException {
        
        String data = "<?xml version=\"1.0\"?>\n" 
          "<!DOCTYPE root [\n" +
                "  <?target data?>\n  <!ELEMENT test (#PCDATA)>" +
            "\n  <?target?>\n]>"
          "\n<test />\n";  
        XMLFilter filter = new XMLFilterImpl();
        filter.setParent(XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser"));
        Document doc = (new Builder(filter)).build(data, null);
        String result = doc.toXML();
        assertEquals(data, result);    
        
    }  
    
    
    public void testInternalDTDSubset() 
      throws ParsingException, IOException {
        
        String data = "<!DOCTYPE root [ <!ELEMENT root EMPTY> ]><test/>";   
        Builder builder = new Builder();
        Document doc = builder.build(data, "http://www.example.com");
        DocType doctype = doc.getDocType();
        assertEquals("root", doctype.getRootElementName());
        String internalSubset =   doctype.getInternalDTDSubset();
        assertEquals("  <!ELEMENT root EMPTY>\n", internalSubset);
        assertTrue(doctype.toXML().indexOf("["0);
        assertTrue(doctype.toXML().indexOf("]"0);
        assertTrue(doctype.toXML().indexOf("<!ELEMENT root EMPTY>"0);
        
    }

    
    public void testToString() {
        
        String expected 
          "[nu.xom.DocType: " + name + "]";
        assertEquals(expected, doctypePublicID.toString());   
        
    }

    
    public void testConstructor1Arg() {

        String name = "MyName";
        DocType doctype = new DocType(name);
        assertEquals(name, doctype.getRootElementName());
        assertEquals("", doctype.getInternalDTDSubset());
        assertNull(doctype.getSystemID());
        assertNull(doctype.getPublicID());

        // legal to have a colon here
        name = "try:MyName";
        doctype = new DocType(name);
        assertEquals("", doctype.getInternalDTDSubset());
        assertEquals(name, doctype.getRootElementName());
        assertNull(doctype.getSystemID());
        assertNull(doctype.getPublicID());

        // illegal name
        try {
            name = "try MyName";
            doctype = new DocType(name);
            fail("allowed root element name to contain spaces");
        
        catch (IllegalNameException success) {
            assertNotNull(success.getMessage());
        }

    }

    
    public void testNullRootElementName() {
        
        try {
            new DocType((Stringnull);
            fail("Allowed null root element name");
        }
        catch (IllegalNameException success) {
            assertNotNull(success.getMessage());
        }
        
    }

    
    public void testRootElementNameBeginsWithDigit() {
        
        try {
            new DocType("1Data");
            fail("Allowed non-namestart character in root element name");
        }
        catch (IllegalNameException success) {
            assertNotNull(success.getMessage());
        }
        
    }

    
    public void testRootElementNameBeginsWithColon() {
        
        try {
            new DocType(":Data");
            fail("Allowed colon to begin root element name");
        }
        catch (IllegalNameException success) {
            assertNotNull(success.getMessage());
        }
        
    }

    
    public void testSetRootElementName() {
        
        DocType doctype = new DocType("root");
        doctype.setRootElementName("newname");
        assertEquals("newname", doctype.getRootElementName());
        doctype.setRootElementName("new:name");
        assertEquals("new:name", doctype.getRootElementName());
        try {
            doctype.setRootElementName(":Data");
            fail("Allowed colon to begin root element name");
        }
        catch (IllegalNameException success) {
            assertNotNull(success.getMessage());
        }
        
    }

    
    public void testAllowEmptyInternalDTDSubset() {
        
        DocType doctype = new DocType("root");
        doctype.setInternalDTDSubset("");
        assertEquals("", doctype.getInternalDTDSubset());
        
    }

    
    public void testAllowNullInternalDTDSubset() {
        
        DocType doctype = new DocType("root");
        doctype.setInternalDTDSubset(null);
        assertEquals("", doctype.getInternalDTDSubset());
        
    }

    
    public void testSetInternalDTDSubset() {
        
        DocType doctype = new DocType("root");
        doctype.setInternalDTDSubset("<!ELEMENT test (PCDATA)>");
        assertEquals("<!ELEMENT test (PCDATA)>", doctype.getInternalDTDSubset());
        
    }

    
    public void testSetInternalDTDSubsetWithEntityThatPointsToNonExistentURL() {
        
        String subset = 
          "<!ENTITY % test SYSTEM 'http://www.example.com/notexists.dtd'>\n"
          "%test;\n";
        DocType doctype = new DocType("root");
        doctype.setInternalDTDSubset(subset);
        assertEquals(subset, doctype.getInternalDTDSubset());
        
    }
    
    
    public void testSetInternalDTDSubsetWithRelativeURL() 
      throws ParsingException, IOException {
    
        Builder builder = new Builder();
        Document doc = builder.build("data/outer21.xml");
        String subset = doc.getDocType().getInternalDTDSubset();
        assertEquals(subset, subset.indexOf("file:/"), -1);

    }
    
    
    public void testSetInternalDTDSubsetWithRelativeURLAndCrimson() 
      throws ParsingException, IOException {
        
        XMLReader crimson;
        try {
            crimson = XMLReaderFactory.createXMLReader(
              "org.apache.crimson.parser.XMLReaderImpl");
        
        catch (SAXException ex) {
            // can't test Crimson if you can't load it
            return;
        }
        Builder builder = new Builder(crimson);
        Document doc = builder.build("data/outer21.xml");
        String subset = doc.getDocType().getInternalDTDSubset();
        assertEquals(subset, subset.indexOf("file:/"), -1);

    }
    
    
    public void testSetMalformedInternalDTDSubset() {
        
        DocType doctype = new DocType("root");
        try {
            doctype.setInternalDTDSubset("<!ELEMENT test (PCDATA>");
            fail("Allowed malformed internal DTD subset");
        }
        catch (WellformednessException success) {
            assertNotNull(success.getMessage());
        }
        
    }

    
    public void testEmptyRootElementName() {
        
        try {
            new DocType("");
            fail("Allowed empty string to be root element name");
        }
        catch (IllegalNameException success) {
            assertNotNull(success.getMessage());
        }
        
    }

    
    public void testNoChildren() {
        
        assertEquals(0, doctypePublicID.getChildCount());
        assertEquals(0, doctypeSystemID.getChildCount());
        assertEquals(0, doctypeRootOnly.getChildCount());
        
        try {
            doctypePublicID.getChild(0);
            fail("Got zeroth child");
        }
        catch (IndexOutOfBoundsException success) {
            assertNotNull(success.getMessage());
        }
        
    }
    
    
    public void testConstructor2Arg() {

        String name = "MyName";
        String systemID = "http://www.w3.org/TR/some.dtd";
        DocType doctype = new DocType(name, systemID);
        assertEquals(name, doctype.getRootElementName());
        assertEquals("", doctype.getInternalDTDSubset());
        assertEquals(systemID, doctype.getSystemID());
        assertNull(doctype.getPublicID());

        // empty system ID
        name = "try:MyName";
        systemID = "";
        doctype = new DocType(name, systemID);
        assertEquals(name, doctype.getRootElementName());
        assertEquals("", doctype.getInternalDTDSubset());
        assertEquals(systemID, doctype.getSystemID());
        assertNull(doctype.getPublicID());

    }

    
    public void testConstructor3Arg() {

        String name = "MyName";
        String systemID = "http://www.w3.org/TR/some.dtd";
        String publicID = "-//Me//some public ID";
        DocType doctype = new DocType(name, publicID, systemID);
        assertEquals(name, doctype.getRootElementName());
        assertEquals("", doctype.getInternalDTDSubset());
        assertEquals(systemID, doctype.getSystemID());
        assertEquals(publicID, doctype.getPublicID());

    }

    
    public void testEmptyStringForPublicID() {

        String name = "MyName";
        String systemID = "http://www.w3.org/TR/some.dtd";
        String publicID = "";
        DocType doctype = new DocType(name, publicID, systemID);
        assertEquals(name, doctype.getRootElementName());
        assertEquals("", doctype.getInternalDTDSubset());
        assertEquals(systemID, doctype.getSystemID());
        assertEquals(publicID, doctype.getPublicID());

    }

    
    public void testEmptyStringForSystemID() {

        String name = "MyName";
        String systemID = "";
        String publicID = "-//Me//some public ID";
        DocType doctype = new DocType(name, publicID, systemID);
        assertEquals(name, doctype.getRootElementName());
        assertEquals("", doctype.getInternalDTDSubset());
        assertEquals(systemID, doctype.getSystemID());
        assertEquals(publicID, doctype.getPublicID());

    }

    
    public void testIllegalPublicIDs() {

        // PubidChar ::= #x20 | #xD | #xA | [a-zA-Z0-9] | [-'()+,./:=?;!*#@$_%]
        for (char c = 0; c <= 0x9; c++) {
            try {
                checkPublicIDCharacter(c + "");
                fail("Allowed bad public ID character " 
                  + Integer.toHexString(c));
            }
            catch (WellformednessException success) {
                // successfully detected bad public ID    
                assertNotNull(success.getMessage());
            }
        
        for (char c = 0xB; c < 0xD; c++) {
            try {
                checkPublicIDCharacter(c + "");
                fail("Allowed bad public ID character " 
                  + Integer.toHexString(c));
            }
            catch (WellformednessException success) {
                // successfully detected bad public ID    
                assertNotNull(success.getMessage());
            }
        
        for (char c = 0xE; c < 0x20; c++) {
            try {
                checkPublicIDCharacter(c + "");
                fail("Allowed bad public ID character " 
                  + Integer.toHexString(c));
            }
            catch (WellformednessException success) {
                // successfully detected bad public ID 
                assertNotNull(success.getMessage());   
            }
        
        for (char c = '~'; c < 1000; c++) {
            try {
                checkPublicIDCharacter(c + "");
                fail("Allowed bad public ID character " 
                  + Integer.toHexString(c));
            }
            catch (WellformednessException success) {
                // successfully detected bad public ID    
                assertNotNull(success.getMessage());
            }
        
        
        char[] illegalPunctuationMarks = "<>`^&\"[]{}|\\~".toCharArray();
        for (int i = 0; i < illegalPunctuationMarks.length; i++) {
            char c = illegalPunctuationMarks[i];
            try {
                checkPublicIDCharacter(c + "");
                fail("Allowed bad public ID character " 
                  + Integer.toHexString(c));
            }
            catch (WellformednessException success) {
                // successfully detected bad public ID    
                assertNotNull(success.getMessage());
            }
        

    }
    
    
    public void testLegalPublicIDs() {

        // PubidChar ::= #x20 | #xD | #xA | [a-zA-Z0-9] | [-'()+,./:=?;!*#@$_%]
        // should public IDs allow initial and trailing space? No. 
        // These are normalized like attribute values according to 
        // section 4.2.2 of the XML spec.
        // This also means charriage returns and linefeeds are 
        // not roundtrippable. They can appear in the document but not
        // the infoset so XOM forbids them.
        checkPublicIDCharacter("-'()+,./:=?;!*#@$_%");
        for (char c = 'a'; c <= 'z'; c++checkPublicIDCharacter(c + "");
        for (char c = 'A'; c <= 'Z'; c++checkPublicIDCharacter(c + "");
        for (char c = '0'; c <= '9'; c++checkPublicIDCharacter(c + "");

    }
    

    public void testSpaceContainingPublicIDs() {

        // According to section 4.2.2 of the XML spec, public IDs are
        // normalized like attribute values of non-CDATA type
        try {
            new DocType("root"" test""http://www.example.org");
            fail("allowed initial space in public ID");
        }
        catch (WellformednessException success) {
            assertNotNull(success.getMessage());
        }

        try {
            new DocType("root""test ""http://www.example.org");
            fail("allowed trailing space in public ID");
        }
        catch (WellformednessException success) {
            assertNotNull(success.getMessage());
        }

        try {
            new DocType("root""test\ntest""http://www.example.org");
            fail("allowed linefeed public ID");
        }
        catch (WellformednessException success) {
            assertNotNull(success.getMessage());
        }

        try {
            new DocType("root""test\rtest""http://www.example.org");
            fail("allowed carriage return in public ID");
        }
        catch (WellformednessException success) {
            assertNotNull(success.getMessage());
        }

        try {
            new DocType("root""test\r\ntest""http://www.example.org");
            fail("allowed carriage return linefeed pair public ID");
        }
        catch (WellformednessException success) {
            assertNotNull(success.getMessage());
        }

        try {
            new DocType("root""test  test""http://www.example.org");
            fail("allowed multiple consecutive spaces in public ID");
        }
        catch (WellformednessException success) {
            assertNotNull(success.getMessage());
        }
        
        // one space is legal
        DocType test = new DocType("root""test test""http://www.example.org");
        assertEquals(test.getPublicID()"test test");

    }
    
    
    public void testSystemIDWithDollarSignAndComma() {

        String systemID = "http://www.example.com/test$red/limit,data.xml";
        DocType doctype = new DocType("root", systemID);
        assertEquals(systemID, doctype.getSystemID());
        
    }
    
    
    public void testSystemIDWithSemicolon() {

        String systemID = "smb://domain;user:pass@server/share/path/to/file";
        DocType doctype = new DocType("root", systemID);
        assertEquals(systemID, doctype.getSystemID());
        
    }
    
    
    public void testIllegalSystemIDs() {

        // "It is an error for a fragment identifier 
        // (beginning with a # character) 
        // to be part of a system identifier."
        try {
            new DocType("test""http://www.example.com/index.html#test");
            fail("Allowed system ID with fragment identifier");
        }
        catch (IllegalDataException success) {
            // successfully detected bad system ID    
            assertNotNull(success.getMessage());
        }
        
        try {
            new DocType("test""http://www.example.com/index.html#");
            fail("Allowed # in system ID");
        }
        catch (IllegalDataException success) {
            // successfully detected bad system ID    
            assertNotNull(success.getMessage());
        }

        try {
            new DocType("test""http://www.example.com/\u00A9.html#");
            fail("Allowed non-ASCII character in system ID");
        }
        catch (IllegalDataException success) {
            // successfully detected bad system ID    
            assertNotNull(success.getMessage());
        }

        try {
            new DocType("test""http://www.example.com/\u0007.html#");
            fail("Allowed C0 control character in system ID");
        }
        catch (IllegalDataException success) {
            // successfully detected bad system ID    
            assertNotNull(success.getMessage());
        }

        try {
            new DocType("test""test\" and ' in the same ID");
            fail("Allowed both \" and ' in system ID");
        }
        catch (IllegalDataException success) {
            // successfully detected bad system ID    
            assertNotNull(success.getMessage());
        }

    }
    
    
    void checkPublicIDCharacter(String publicID) {
        String name = "MyName";
        String systemID = "http://www.w3.org/TR/some.dtd";
        DocType doctype = new DocType(name, publicID, systemID);
        assertEquals(publicID, doctype.getPublicID());
    }

    
    public void testClone() {

        String name = "MyName";
        String systemID = "http://www.w3.org/TR/some.dtd";
        String publicID = "-//Me//some public ID";
        DocType doctype = new DocType(name, publicID, systemID);

        DocType other = (DocTypedoctype.copy();

        assertEquals(
          doctype.getRootElementName(),
          other.getRootElementName());
        assertEquals(
          doctype.getInternalDTDSubset(),
          other.getInternalDTDSubset()
        );
        assertEquals(doctype.getSystemID(), other.getSystemID());
        assertEquals(doctype.getPublicID(), other.getPublicID());
        assertTrue(!other.equals(doctype));

    }

    
    public void testGetters() {

        String name = "MyName";
        String systemID = "http://www.w3.org/TR/some.dtd";
        String publicID = "-//Me//some public ID";
        DocType doctype = new DocType(name, publicID, systemID);

        assertEquals("", doctype.getValue());

    }

    
    public void testSystemIDRequiredForPublicID() {

        String name = "MyName";
        DocType doctype = new DocType(name);

        try {
            doctype.setPublicID("-//Me//some public ID");
            fail("created a doctype with a public ID and no system ID");
        
        catch (WellformednessException ex) {
            // success   
            assertNotNull(ex.getMessage());
        }

    }

    
    public void testRemove() {

        String name = "MyName";
        String publicID = "-//Me//some public ID";
        DocType doctype =
          new DocType(name, publicID, "http://www.example.com");

        doctype.setPublicID(null);
        assertNull(doctype.getPublicID());
        doctype.setPublicID(publicID);
        assertEquals(publicID, doctype.getPublicID());

        try {
            doctype.setSystemID(null);
            fail("removed system ID before removing public ID");
        
        catch (WellformednessException success) {  
            assertNotNull(success.getMessage());
        }

        doctype.setPublicID(null);
        assertNull(doctype.getPublicID());
        doctype.setSystemID(null);
        assertNull(doctype.getSystemID());

    }

        
    public void testCarriageReturnInEntityReplacementTextInInternalDTDSubset() 
      throws ParsingException, IOException {
     
        Builder builder = new Builder();
        String data = "<!DOCTYPE root ["
          "<!ENTITY CR '&#13;'>" 
          "]><root/>";
        Document doc = builder.build(data, null);
        String internalDTDSubset = doc.getDocType().getInternalDTDSubset()
        assertTrue(internalDTDSubset.indexOf("<!ENTITY CR \"&#x0D;\">"1);
        
    }

    
    public void testCarriageReturnInAttributeDefaultValueInInternalDTDSubset() 
      throws ParsingException, IOException {
     
        Builder builder = new Builder();
        String data = "<!DOCTYPE root ["
          "<!ATTLIST root attribute CDATA '&#13;'>" 
          "]><root/>";
        Document doc = builder.build(data, null);
        String internalDTDSubset = doc.getDocType().getInternalDTDSubset()
        assertTrue(internalDTDSubset.indexOf("<!ATTLIST root attribute CDATA \"&#x0D;\">"1);
        
    }

    
    public void testQuotationMarksInNotationDeclarationInInternalDTDSubset() 
      throws ParsingException, IOException {
     
        Builder builder = new Builder();
        String data = "<!DOCTYPE root [\n"
          "<!NOTATION not2 SYSTEM 'a b\"\"\"'>\n"
          "]><root />";
        Document doc = builder.build(data, null);
        String internalDTDSubset = doc.getDocType().getInternalDTDSubset()
        assertEquals("  <!NOTATION not2 SYSTEM \"a b&#x22;&#x22;&#x22;\">\n", internalDTDSubset);
        
    }

    
    public void testAmpersandInEntityReplacementTextInInternalDTDSubset() 
      throws ParsingException, IOException {
     
        Builder builder = new Builder();
        String data = "<!DOCTYPE root ["
          "<!ENTITY amp2 '&amp;'>" 
          "]><root/>";
        Document doc = builder.build(data, null);
        String internalDTDSubset = doc.getDocType().getInternalDTDSubset();
        assertTrue(internalDTDSubset.indexOf("<!ENTITY amp2 \"&#x26;amp;\">"1);
        
    }

    
    public void testAmpersandInAttributeDefaultValueInInternalDTDSubset() 
      throws ParsingException, IOException {
     
        Builder builder = new Builder();
        String data = "<!DOCTYPE root ["
          "<!ATTLIST root attribute CDATA '&amp;'>" 
          "]><root/>";
        Document doc = builder.build(data, null);
        String internalDTDSubset = doc.getDocType().getInternalDTDSubset()
        assertTrue(internalDTDSubset.indexOf(
          "<!ATTLIST root attribute CDATA \"&amp;\">"1
        );
        
    }
    
    
    public void testDoubleQuoteInAttributeDefaultValueInInternalDTDSubset() 
      throws ParsingException, IOException {
     
        Builder builder = new Builder();
        String data = "<!DOCTYPE root ["
          "<!ATTLIST root attribute CDATA '&quot;'>" 
          "]><root/>";
        Document doc = builder.build(data, null);
        String internalDTDSubset = doc.getDocType().getInternalDTDSubset()
        assertTrue(internalDTDSubset.indexOf(
          "<!ATTLIST root attribute CDATA \"&quot;\">"1
        );
        
    }
    
    
    public void testSingleQuoteInAttributeDefaultValueInInternalDTDSubset() 
      throws ParsingException, IOException {
     
        Builder builder = new Builder();
        String data = "<!DOCTYPE root ["
          "<!ATTLIST root attribute CDATA '&apos;'>" 
          "]><root/>";
        Document doc = builder.build(data, null);
        String internalDTDSubset = doc.getDocType().getInternalDTDSubset()
        assertTrue(internalDTDSubset.indexOf(
          "<!ATTLIST root attribute CDATA \"'\">"1
        );
        
    }
    
    
    public void testLessThanSignInAttributeDefaultValueInInternalDTDSubset() 
      throws ParsingException, IOException {
     
        Builder builder = new Builder();
        String data = "<!DOCTYPE root ["
          "<!ATTLIST root attribute CDATA '&lt;'>" 
          "]><root/>";
        Document doc = builder.build(data, null);
        String internalDTDSubset = doc.getDocType().getInternalDTDSubset();
        assertTrue(internalDTDSubset.indexOf(
          "<!ATTLIST root attribute CDATA \"&lt;\">"1
        );
        
    }
    
    
    public void testGreaterThanSignInAttributeDefaultValueInInternalDTDSubset() 
      throws ParsingException, IOException {
     
        Builder builder = new Builder();
        String data = "<!DOCTYPE root ["
          "<!ATTLIST root attribute CDATA '>'>" 
          "]><root/>";
        Document doc = builder.build(data, null);
        String internalDTDSubset = doc.getDocType().getInternalDTDSubset();
        assertTrue(internalDTDSubset.indexOf(
          "<!ATTLIST root attribute CDATA \">\">"1
        );
        
    }
    
    
    public void testDoubleQuoteInEntityReplacementTextInInternalDTDSubset() 
      throws ParsingException, IOException {
     
        Builder builder = new Builder();
        String data = "<!DOCTYPE root ["
          "<!ENTITY q2 '&quot;'>" 
          "]><root/>";
        Document doc = builder.build(data, null);
        String internalDTDSubset = doc.getDocType().getInternalDTDSubset();
        assertTrue(internalDTDSubset.indexOf("<!ENTITY q2 \"&#x26;quot;\">"1);
        
    }
    
    
}