Examples of nu.xom.Comment

nu.xom.Comment

This class represents an XML comment such as <-- This is a comment-->. A comment node cannot have any child nodes. It can be a child of an Element or a Document. It has essentially no internal substructure.
@author Elliotte Rusty Harold @version 1.0

    }


    
    public void testToString() {
        
        Comment c1 = new Comment("content");
        assertEquals("[nu.xom.Comment: content]", c1.toString());          
        
        c1.setValue("012345678901234567890123456789012345678901234567890123456789");
        assertEquals(
          "[nu.xom.Comment: 01234567890123456789012345678901234...]", 
          c1.toString()
        ); 
           
    }

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    }
    
    
    public void testToStringWithLineFeed() {
        
        Comment c = new Comment("content\ncontent");
        assertEquals("[nu.xom.Comment: content\\ncontent]", c.toString());         
        
    }

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    }
    
    
    public void testToStringWithLotsOfData() {
        
        Comment c 
          = new Comment("content content 012345678901234567890123456789012345678901234567890123456789");
        String s = c.toString();
        assertTrue(s.length() < 72);
        
    }

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    }




    public void testToXML() {
        
        Comment c1 = new Comment("content");
        assertEquals("<!--content-->", c1.toXML());          
        
        c1.setValue(" 012345678901234567890123456789012345678901234567890123456789 ");
        assertEquals(
          "<!-- 012345678901234567890123456789012345678901234567890123456789 -->", 
          c1.toXML()
        ); 
           
    }

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    // This is a problem because it cannot be serialized
    // since character and entity references aren't
    // recognized in comment data
    public void testCarriageReturnInCommentData() {
        try {
            new Comment("data\rdata");
            fail("Allowed carriage return in comment");
        }
        catch (IllegalDataException success) {
            assertEquals("data\rdata", success.getData());
            assertNotNull(success.getMessage());

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    }
    
    
    public void testSetter() {


        Comment c1 = new Comment("test");
        c1.setValue("legal");
        assertEquals("legal", c1.getValue());
        
        try {
          c1.setValue("test -- test");
          fail("Should raise an IllegalDataException");
        }
        catch (IllegalDataException success) {
            assertEquals("test -- test", success.getData());
            assertNotNull(success.getMessage());   
        }
        
        try {
          c1.setValue("test-");
          fail("Should raise an IllegalDataException");
        }
        catch (IllegalDataException success) {
            assertEquals("test-", success.getData());
            assertNotNull(success.getMessage());   
        }   


        c1.setValue(null);
        assertEquals("", c1.getValue());


     }

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     }




    public void testEquals() {
        
        Comment c1 = new Comment("test");
        Comment c2 = new Comment("test");
        Comment c3 = new Comment("skjlchsakdjh");


        assertEquals(c1, c1);
        assertEquals(c1.hashCode(), c1.hashCode());
        assertTrue(!c1.equals(c2));
        assertTrue(!c1.equals(c3));

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    }


    
    public void testCopy() {
        
        Comment c1 = new Comment("test");
        Comment c2 = (Comment) c1.copy();


        assertEquals(c1.getValue(), c2.getValue());
        assertTrue(!c1.equals(c2));
        assertNull(c2.getParent());


    }

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    // Check passing in a string with broken surrogate pairs
    // and with correct surrogate pairs
    public void testSurrogates() {


        String goodString = "test: \uD8F5\uDF80  ";
        Comment c = new Comment(goodString);
        assertEquals(goodString, c.getValue());


        // Two high-halves
        try {
          new Comment("test: \uD8F5\uDBF0  ");
          fail("Should raise an IllegalCharacterDataException");
        }
        catch (IllegalCharacterDataException success) {
            assertEquals("test: \uD8F5\uDBF0  ", success.getData());
            assertNotNull(success.getMessage());   
        }   


        // Two high-halves
        try {
          new Comment("test: \uD8F5\uD8F5  ");
          fail("Should raise an IllegalCharacterDataException");
        }
        catch (IllegalCharacterDataException success) {
            assertEquals("test: \uD8F5\uD8F5  ", success.getData());
            assertNotNull(success.getMessage());   
        }   


        // One high-half
        try {
           new Comment("test: \uD8F5  ");
           fail("Should raise an IllegalCharacterDataException");
        }
        catch (IllegalCharacterDataException success) {
            assertEquals("test: \uD8F5  ", success.getData());
            assertNotNull(success.getMessage());   
        }   


        // One low half
        try {
            new Comment("test: \uDF80  ");
            fail("Should raise an IllegalCharacterDataException");
         }
        catch (IllegalCharacterDataException success) {
            assertEquals("test: \uDF80  ", success.getData());
            assertNotNull(success.getMessage());   
        }   


        // Low half before high half
        try {
            new Comment("test: \uDCF5\uD8F5  ");
            fail("Should raise an IllegalCharacterDataException");
        }
        catch (IllegalCharacterDataException success) {
            assertEquals("test: \uDCF5\uD8F5  ", success.getData());
            assertNotNull(success.getMessage());

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    }


    
    public void testLeafNode() {


        Comment c1 = new Comment("data");
        assertEquals(0, c1.getChildCount());
        try {
            c1.getChild(0);
            fail("Didn't throw IndexOutofBoundsException");
        }
        catch (IndexOutOfBoundsException success) {
            assertNotNull(success.getMessage()); 
        }
        
        assertNull(c1.getParent());


        Element element = new Element("test");
        element.appendChild(c1);
        assertEquals(element, c1.getParent());
        assertEquals(element.getChild(0), c1);


        element.removeChild(c1);
        assertTrue(element.getChildCount() == 0);

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