Examples of nu.xom.DocType

nu.xom.DocType
Represents an XML document type declaration such as <!DOCTYPE book SYSTEM "docbookx.dtd">. Note that this is not the same thing as a document type definition (DTD). XOM does not currently model the DTD. The document type declaration contains or points to the DTD, but it is not the DTD.

A DocType object does not have any child nodes. It can be a child of a Document.

Each DocType object has four String properties, some of which may be null:
- The declared name of the root element (which does not necessarily match the actual root element name in an invalid document)
- The public identifier (which may be null)
- The system identifier (which may be null)
- The internal DTD subset (which may be null)
@author Elliotte Rusty Harold @version 1.1d1

      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);
        
    }

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    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());
        }

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

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

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

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    }


    
    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());
        }

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    }


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

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    }


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

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    }


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

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    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());
        
    }

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