imagetagtest.java

html to xml convertor

    /**
     * This is the reproduction of a bug which causes a null pointer exception
     */
    public void testExtractImageLocnInvertedCommasBug() throws ParserException
    {
        String locn = "http://us.a1.yimg.com/us.yimg.com/i/ww/m5v5.gif";
        createParser ("<img width=638 height=53 border=0 usemap=\"#m\" src=" + locn + " alt=Yahoo>");
        parseAndAssertNodeCount(1);
        assertTrue("Node identified should be HTMLImageTag",node[0] instanceof ImageTag);
        ImageTag imageTag = (ImageTag)node[0];
        assertEquals("Expected Image Locn",locn,imageTag.getImageURL());
    }

    /**
     * This test has been improved to check for params
     * in the image tag, based on requirement by Annette Doyle.
     * Thereby an important bug was detected.
     */
    public void testPlaceHolderImageScan() throws ParserException {
        createParser("<IMG width=1 height=1 alt=\"a\">","http://www.yahoo.com/ghi?abcdefg");
        parseAndAssertNodeCount(1);
        assertTrue("Node identified should be HTMLImageTag",node[0] instanceof ImageTag);
        ImageTag imageTag = (ImageTag)node[0];
        assertEquals("Expected Image Locn","",imageTag.getImageURL());
        assertEquals("Image width","1",imageTag.getAttribute("WIDTH"));
        assertEquals("Image height","1",imageTag.getAttribute("HEIGHT"));
        assertEquals("alt","a",imageTag.getAttribute("ALT"));
    }

    public void testRelativeImageScan() throws ParserException {
        createParser("<IMG SRC=\"mypic.jpg\">","http://www.yahoo.com");
        parseAndAssertNodeCount(1);
        assertTrue("Node identified should be ImageTag",node[0] instanceof ImageTag);
        ImageTag imageTag = (ImageTag)node[0];
        assertEquals("Expected Link","http://www.yahoo.com/mypic.jpg",imageTag.getImageURL());
    }

    public void testRelativeImageScan2() throws ParserException {
        createParser("<IMG SRC=\"abc/def/mypic.jpg\">","http://www.yahoo.com");     // Register the image scanner
        parseAndAssertNodeCount(1);
        assertTrue("Node identified should be HTMLImageTag",node[0] instanceof ImageTag);
        ImageTag imageTag = (ImageTag)node[0];
        assertEquals("Expected Link","http://www.yahoo.com/abc/def/mypic.jpg",imageTag.getImageURL());
    }

    public void testRelativeImageScan3() throws ParserException {
        createParser("<IMG SRC=\"../abc/def/mypic.jpg\">","http://www.yahoo.com/ghi");
        parseAndAssertNodeCount(1);
        assertTrue("Node identified should be HTMLImageTag",node[0] instanceof ImageTag);
        ImageTag imageTag = (ImageTag)node[0];
        assertEquals("Expected Link","http://www.yahoo.com/abc/def/mypic.jpg",imageTag.getImageURL());
    }

    /**
     * Test image url which contains spaces in it.
     * This was actually a bug reported by Sam Joseph ([e-mail])
     */
    public void testImageWithSpaces() throws ParserException
    {
        createParser("<IMG SRC=\"../abc/def/Hello World.jpg\">","http://www.yahoo.com/ghi");
        parseAndAssertNodeCount(1);
        assertTrue("Node identified should be HTMLImageTag",node[0] instanceof ImageTag);
        ImageTag imageTag = (ImageTag)node[0];
        assertEquals("Expected Link","http://www.yahoo.com/abc/def/Hello World.jpg",imageTag.getImageURL());
    }

    public void testImageWithNewLineChars() throws ParserException
    {
        createParser("<IMG SRC=\"../abc/def/Hello \r\nWorld.jpg\">","http://www.yahoo.com/ghi");
        parseAndAssertNodeCount(1);
        assertTrue("Node identified should be HTMLImageTag",node[0] instanceof ImageTag);
        ImageTag imageTag = (ImageTag)node[0];
        String exp = new String("http://www.yahoo.com/abc/def/Hello World.jpg");
        //assertEquals("Length of image",exp.length(),imageTag.getImageLocation().length());
        assertStringEquals("Expected Image",exp,imageTag.getImageURL());
    }

    /**
     * Test case to reproduce bug reported by Annette
     */
    public void testImageTagsFromYahoo() throws ParserException
    {
        createParser("<small><a href=s/5926>Air</a>, <a href=s/5927>Hotel</a>, <a href=s/5928>Vacations</a>, <a href=s/5929>Cruises</a></small></td><td align=center><a href=\"http://rd.yahoo.com/M=218794.2020165.3500581.220161/D=yahoo_top/S=2716149:NP/A=1041273/?http://adfarm.mediaplex.com/ad/ck/990-1736-1039-211\" target=\"_top\"><img width=230 height=33 src=\"http://us.a1.yimg.com/us.yimg.com/a/co/columbiahouse/4for49Freesh_230x33_redx2.gif\" alt=\"\" border=0></a></td><td nowrap align=center width=215>Find your match on<br><a href=s/2734><b>Yahoo! Personals</b></a></td></tr><tr><td colspan=3 align=center><input size=30 name=p>\n"+
        "<input type=submit value=Search> <a href=r/so>advanced search</a></td></tr></table><table border=0 cellspacing=0 cellpadding=3 width=640><tr><td nowrap align=center><table border=0 cellspacing=0 cellpadding=0><tr><td><a href=s/5948><img src=\"http://us.i1.yimg.com/us.yimg.com/i/ligans/klgs/eet.gif\" width=20 height=20 border=0></a></td><td> &nbsp; &nbsp; <a href=s/1048><b>Yahooligans!</b></a> - <a href=s/5282>Eet & Ern</a>, <a href=s/5283>Games</a>, <a href=s/5284>Science</a>, <a href=s/5285>Sports</a>, <a href=s/5286>Movies</a>, <a href=s/1048>more</a> &nbsp; &nbsp; </td><td><a href=s/5948><img src=\"http://us.i1.yimg.com/us.yimg.com/i/ligans/klgs/ern.gif\" width=20 height=20 border=0></a></td></tr></table></td></tr><tr><td nowrap align=center><small><b>Shop</b>&nbsp;\n","http://www.yahoo.com");
        Node [] node = new Node[10];
        parser.setNodeFactory (new PrototypicalNodeFactory (new ImageTag ()));
        int i = 0;
        Node thisNode;
        for (NodeIterator e = parser.elements();e.hasMoreNodes();) {
            thisNode = e.nextNode();
            if (thisNode instanceof ImageTag)
                node[i++] = thisNode;
        }
        assertEquals("Number of nodes identified should be 3",3,i);
        assertTrue("Node identified should be HTMLImageTag",node[0] instanceof ImageTag);
        ImageTag imageTag = (ImageTag)node[0];
        assertEquals("Expected Image","http://us.a1.yimg.com/us.yimg.com/a/co/columbiahouse/4for49Freesh_230x33_redx2.gif",imageTag.getImageURL());
        ImageTag imageTag2 = (ImageTag)node[1];
        assertEquals("Expected Image 2","http://us.i1.yimg.com/us.yimg.com/i/ligans/klgs/eet.gif",imageTag2.getImageURL());
        ImageTag imageTag3 = (ImageTag)node[2];
        assertEquals("Expected Image 3","http://us.i1.yimg.com/us.yimg.com/i/ligans/klgs/ern.gif",imageTag3.getImageURL());
    }

    /**
     * Test case to reproduce bug reported by Annette
     */
    public void testImageTagsFromYahooWithAllScannersRegistered() throws ParserException
    {
        createParser(
            "<tr>" +
                "<td>" +
                "   <small><a href=s/5926>Air</a>, <a href=s/5927>Hotel</a>, " +
                    "<a href=s/5928>Vacations</a>, <a href=s/5929>Cruises</a></small>" +
                "</td>" +
                "<td align=center>" +
                    "<a href=\"http://rd.yahoo.com/M=218794.2020165.3500581.220161/D=yahoo_top/S=" +
                    "2716149:NP/A=1041273/?http://adfarm.mediaplex.com/ad/ck/990-1736-1039-211\" " +
                    "target=\"_top\"><img width=230 height=33 src=\"http://us.a1.yimg.com/us.yimg.com/a/co/" +
                    "columbiahouse/4for49Freesh_230x33_redx2.gif\" alt=\"\" border=0></a>" +
                "</td>" +
                "<td nowrap align=center width=215>" +
                    "Find your match on<br><a href=s/2734>" +
                    "<b>Yahoo! Personals</b></a>" +
                "</td>" +
            "</tr>" +
            "<tr>" +
                "<td colspan=3 align=center>" +
                    "<input size=30 " +
                    "name=p>\n" +
                "</td>" +
            "</tr>","http://www.yahoo.com",30
        );
        parseAndAssertNodeCount(2);
        assertType("first node type",TableRow.class,node[0]);
        TableRow row = (TableRow)node[0];
        TableColumn col = row.getColumns()[1];
        Node node = col.children().nextNode();
        assertType("Node identified should be HTMLLinkTag",LinkTag.class,node);
        LinkTag linkTag = (LinkTag)node;
        Node nodeInsideLink = linkTag.children().nextNode();
        assertType("Tag within link should be an image tag",ImageTag.class,nodeInsideLink);
        ImageTag imageTag = (ImageTag)nodeInsideLink;
        assertStringEquals(
            "Expected Image",
            "http://us.a1.yimg.com/us.yimg.com/a/co/columbiahouse/4for49Freesh_230x33_redx2.gif",
            imageTag.getImageURL()
        );
    }

    /**
     * This is the reproduction of a bug reported
     * by Annette Doyle
     */
    public void testImageTagOnMultipleLines() throws ParserException {
        createParser(
            "<td rowspan=3>" +
                "<img height=49 \n\n"+
                "alt=\"Central Intelligence Agency, Director of Central Intelligence\" \n\n"+
                "src=\"graphics/images_home2/cia_banners_template3_01.gif\" \n\n"+
                "width=241>" +
            "</td>",
            "http://www.cia.gov"
        );
        parseAndAssertNodeCount(1);
        assertType("node should be", TableColumn.class, node[0]);
        TableColumn col = (TableColumn)node[0];
        Node node = col.children().nextNode();
        assertType("node inside column",ImageTag.class,node);
        ImageTag imageTag = (ImageTag)node;
        // Get the data from the node
        assertEquals("Image location","http://www.cia.gov/graphics/images_home2/cia_banners_template3_01.gif",imageTag.getImageURL());
        assertEquals("Alt Value","Central Intelligence Agency, Director of Central Intelligence",imageTag.getAttribute("ALT"));
        assertEquals("Width","241",imageTag.getAttribute("WIDTH"));
        assertEquals("Height","49",imageTag.getAttribute("HEIGHT"));
    }

    public void testDirectRelativeLinks() throws ParserException {
        createParser("<IMG SRC  = \"/images/lines/li065.jpg\">","http://www.cybergeo.presse.fr/REVGEO/ttsavoir/joly.htm");
        parseAndAssertNodeCount(1);
        assertTrue("Node identified should be HTMLImageTag",node[0] instanceof ImageTag);
        ImageTag imageTag = (ImageTag)node[0];
        assertEquals("Image Location","http://www.cybergeo.presse.fr/images/lines/li065.jpg",imageTag.getImageURL());

    }

    /**
     * Based on a page submitted by Claude Duguay, the image tag has IMG SRC"somefile.jpg" - a missing equal
     * to sign
     */
    public void testMissingEqualTo() throws ParserException {
        createParser("<img src\"/images/spacer.gif\" width=\"1\" height=\"1\" alt=\"\">","http://www.htmlparser.org/subdir1/subdir2");
        parseAndAssertNodeCount(1);
        assertTrue("Node identified should be HTMLImageTag",node[0] instanceof ImageTag);
        ImageTag imageTag = (ImageTag)node[0];
        assertStringEquals("Image Location","http://www.htmlparser.org/images/spacer.gif",imageTag.getImageURL());
        assertEquals("Width","1",imageTag.getAttribute("WIDTH"));
        assertEquals("Height","1",imageTag.getAttribute("HEIGHT"));
        assertEquals("Alt","",imageTag.getAttribute("ALT"));
    }
}