@Test
    public void testEmbeddedOfficeFiles() throws Exception {
        ContainerExtractor extractor = new ParserContainerExtractor();
        TikaTest.TrackingHandler handler;

        // Excel with a word doc and a powerpoint doc, both of which have images in them
        // Without recursion, should see both documents + the images
        handler = process("testEXCEL_embeded.xls", extractor, false);
        assertEquals(5, handler.filenames.size());
        assertEquals(5, handler.mediaTypes.size());

        // We don't know their filenames
        assertEquals(null, handler.filenames.get(0));
        assertEquals(null, handler.filenames.get(1));
        assertEquals(null, handler.filenames.get(2));
        assertEquals("MBD0003271D.ppt", handler.filenames.get(3));
        assertEquals("MBD00032A24.doc", handler.filenames.get(4));
        // But we do know their types
        assertEquals(TYPE_EMF, handler.mediaTypes.get(0)); // Icon of embedded office doc
        assertEquals(TYPE_EMF, handler.mediaTypes.get(1)); // Icon of embedded office doc
        assertEquals(TYPE_PNG, handler.mediaTypes.get(2)); // Embedded image
        assertEquals(TYPE_PPT, handler.mediaTypes.get(3)); // Embedded office doc
        assertEquals(TYPE_DOC, handler.mediaTypes.get(4)); // Embedded office doc


        // With recursion, should get the images embedded in the office files too
        handler = process("testEXCEL_embeded.xls", extractor, true);
        assertEquals(17, handler.filenames.size());
        assertEquals(17, handler.mediaTypes.size());

        assertEquals(null, handler.filenames.get(0));
        assertEquals(null, handler.filenames.get(1));
        assertEquals(null, handler.filenames.get(2));
        assertEquals("MBD0003271D.ppt", handler.filenames.get(3));
        assertEquals("1", handler.filenames.get(4));
        assertEquals(null, handler.filenames.get(5));
        assertEquals("2", handler.filenames.get(6));
        assertEquals("image1.png", handler.filenames.get(7));
        assertEquals("image2.jpg", handler.filenames.get(8));
        assertEquals("image3.png", handler.filenames.get(9));
        assertEquals("image1.png", handler.filenames.get(16));

        assertEquals(TYPE_EMF, handler.mediaTypes.get(0)); // Icon of embedded office doc
        assertEquals(TYPE_EMF, handler.mediaTypes.get(1)); // Icon of embedded office doc
        assertEquals(TYPE_PNG, handler.mediaTypes.get(2)); // Embedded image
        assertEquals(TYPE_PPT, handler.mediaTypes.get(3)); // Embedded presentation
        assertEquals(TYPE_XLS, handler.mediaTypes.get(4)); // Embedded XLS
        assertEquals(TYPE_PNG, handler.mediaTypes.get(5)); // Embedded image
        assertEquals(TYPE_DOC, handler.mediaTypes.get(6)); // Embedded office doc
        assertEquals(TYPE_PNG, handler.mediaTypes.get(7)); // Embedded image
        assertEquals(TYPE_JPG, handler.mediaTypes.get(8)); // Embedded image
        assertEquals(TYPE_PNG, handler.mediaTypes.get(9)); // Embedded image
        assertEquals(TYPE_DOC, handler.mediaTypes.get(15)); // Embedded office doc
        assertEquals(TYPE_PNG, handler.mediaTypes.get(16)); // Embedded image

        // Word with .docx, powerpoint and excel
        handler = process("testWORD_embeded.doc", extractor, false);
        assertEquals(9, handler.filenames.size());
        assertEquals(9, handler.mediaTypes.size());

        // Filenames are a bit iffy...
        // Should really be 3*embedded pictures then 3*icons then embedded docs
        assertEquals("image1.emf", handler.filenames.get(0));
        assertEquals("image4.png", handler.filenames.get(1));
        assertEquals("image5.jpg", handler.filenames.get(2));
        assertEquals("image6.png", handler.filenames.get(3));
        assertEquals("image2.emf", handler.filenames.get(4));
        assertEquals("image3.emf", handler.filenames.get(5));
        assertEquals(null, handler.filenames.get(6));
        assertEquals("_1345471035.ppt", handler.filenames.get(7));
        assertEquals("_1345470949.xls", handler.filenames.get(8));

        // But we do know their types
        assertEquals(TYPE_EMF, handler.mediaTypes.get(0)); // Icon of embedded office doc?
        assertEquals(TYPE_PNG, handler.mediaTypes.get(1)); // Embedded image - logo
        assertEquals(TYPE_JPG, handler.mediaTypes.get(2)); // Embedded image - safe
        assertEquals(TYPE_PNG, handler.mediaTypes.get(3)); // Embedded image - try
        assertEquals(TYPE_EMF, handler.mediaTypes.get(4)); // Icon of embedded office doc?
        assertEquals(TYPE_EMF, handler.mediaTypes.get(5)); // Icon of embedded office doc?
        assertEquals(TYPE_DOCX, handler.mediaTypes.get(6)); // Embedded office doc
        assertEquals(TYPE_PPT, handler.mediaTypes.get(7)); // Embedded office doc
        assertEquals(TYPE_XLS, handler.mediaTypes.get(8)); // Embedded office doc


        // With recursion, should get their images too
        handler = process("testWORD_embeded.doc", extractor, true);
        assertEquals(16, handler.filenames.size());
        assertEquals(16, handler.mediaTypes.size());

        // We don't know their filenames, except for doc images + docx
        assertEquals("image1.emf", handler.filenames.get(0));
        assertEquals("image4.png", handler.filenames.get(1));
        assertEquals("image5.jpg", handler.filenames.get(2));
        assertEquals("image6.png", handler.filenames.get(3));
        assertEquals("image2.emf", handler.filenames.get(4));
        assertEquals("image3.emf", handler.filenames.get(5));
        assertEquals(null, handler.filenames.get(6));
        assertEquals("image2.png", handler.filenames.get(7));
        assertEquals("image3.jpeg", handler.filenames.get(8));
        assertEquals("image4.png", handler.filenames.get(9));
        for (int i = 11; i < 14; i++) {
            assertNull(handler.filenames.get(i));
        }
        // But we do know their types
        assertEquals(TYPE_EMF, handler.mediaTypes.get(0)); // Icon of embedded office doc
        assertEquals(TYPE_PNG, handler.mediaTypes.get(1)); // Embedded image - logo
        assertEquals(TYPE_JPG, handler.mediaTypes.get(2)); // Embedded image - safe
        assertEquals(TYPE_PNG, handler.mediaTypes.get(3)); // Embedded image - try
        assertEquals(TYPE_EMF, handler.mediaTypes.get(4)); // Icon of embedded office doc
        assertEquals(TYPE_EMF, handler.mediaTypes.get(5)); // Icon of embedded office doc
        assertEquals(TYPE_DOCX, handler.mediaTypes.get(6)); // Embedded office doc
        assertEquals(TYPE_PNG, handler.mediaTypes.get(7));  //    PNG inside .docx
        assertEquals(TYPE_JPG, handler.mediaTypes.get(8));  //    JPG inside .docx
        assertEquals(TYPE_PNG, handler.mediaTypes.get(9));  //    PNG inside .docx
        assertEquals(TYPE_PPT, handler.mediaTypes.get(10)); // Embedded office doc
        assertEquals(TYPE_XLS, handler.mediaTypes.get(14)); // Embedded office doc
        assertEquals(TYPE_PNG, handler.mediaTypes.get(15)); //    PNG inside .xls


        // PowerPoint with excel and word
        handler = process("testPPT_embeded.ppt", extractor, false);
        assertEquals(7, handler.filenames.size());
        assertEquals(7, handler.mediaTypes.size());

        // We don't get all that helpful filenames
        assertEquals("1", handler.filenames.get(0));
        assertEquals("2", handler.filenames.get(1));
        assertEquals(null, handler.filenames.get(2));
        assertEquals(null, handler.filenames.get(3));
        assertEquals(null, handler.filenames.get(4));
        assertEquals(null, handler.filenames.get(5));
        assertEquals(null, handler.filenames.get(6));
        // But we do know their types
        assertEquals(TYPE_XLS, handler.mediaTypes.get(0)); // Embedded office doc
        assertEquals(TYPE_DOC, handler.mediaTypes.get(1)); // Embedded office doc
        assertEquals(TYPE_EMF, handler.mediaTypes.get(2)); // Icon of embedded office doc
        assertEquals(TYPE_EMF, handler.mediaTypes.get(3)); // Icon of embedded office doc
        assertEquals(TYPE_PNG, handler.mediaTypes.get(4)); // Embedded image
        assertEquals(TYPE_PNG, handler.mediaTypes.get(5)); // Embedded image
        assertEquals(TYPE_PNG, handler.mediaTypes.get(6)); // Embedded image

        // Run again on PowerPoint but with recursion
        handler = process("testPPT_embeded.ppt", extractor, true);
        assertEquals(11, handler.filenames.size());
        assertEquals(11, handler.mediaTypes.size());

        assertEquals("1", handler.filenames.get(0));
        assertEquals(null, handler.filenames.get(1));
        assertEquals("2", handler.filenames.get(2));
        assertEquals("image1.png", handler.filenames.get(3));
        assertEquals("image2.jpg", handler.filenames.get(4));
        assertEquals("image3.png", handler.filenames.get(5));
        assertEquals(null, handler.filenames.get(6));
        assertEquals(null, handler.filenames.get(7));
        assertEquals(null, handler.filenames.get(8));
        assertEquals(null, handler.filenames.get(9));
        assertEquals(null, handler.filenames.get(10));

        assertEquals(TYPE_XLS, handler.mediaTypes.get(0)); // Embedded office doc
        assertEquals(TYPE_PNG, handler.mediaTypes.get(1)); //    PNG inside .xls
        assertEquals(TYPE_DOC, handler.mediaTypes.get(2)); // Embedded office doc
        assertEquals(TYPE_PNG, handler.mediaTypes.get(3));  //    PNG inside .docx
        assertEquals(TYPE_JPG, handler.mediaTypes.get(4));  //    JPG inside .docx
        assertEquals(TYPE_PNG, handler.mediaTypes.get(5));  //    PNG inside .docx
        assertEquals(TYPE_EMF, handler.mediaTypes.get(6)); // Icon of embedded office doc
        assertEquals(TYPE_EMF, handler.mediaTypes.get(7)); // Icon of embedded office doc
        assertEquals(TYPE_PNG, handler.mediaTypes.get(8)); // Embedded image
        assertEquals(TYPE_PNG, handler.mediaTypes.get(9)); // Embedded image
        assertEquals(TYPE_PNG, handler.mediaTypes.get(10)); // Embedded image


        // Word, with a non-office file (PDF)
        handler = process("testWORD_embedded_pdf.doc", extractor, true);
        assertEquals(2, handler.filenames.size());
        assertEquals(2, handler.mediaTypes.size());

        assertEquals("image1.emf", handler.filenames.get(0));
        assertEquals("_1402837031.pdf", handler.filenames.get(1));

        assertEquals(TYPE_EMF, handler.mediaTypes.get(0)); // Icon of embedded pdf
        assertEquals(TYPE_PDF, handler.mediaTypes.get(1)); // The embedded PDF itself


        // Outlook with a text file and a word document
        handler = process("testMSG_att_doc.msg", extractor, true);
        assertEquals(2, handler.filenames.size());
        assertEquals(2, handler.mediaTypes.size());

        assertEquals("test-unicode.doc", handler.filenames.get(0));
        assertEquals(TYPE_DOC, handler.mediaTypes.get(0));

        assertEquals("pj1.txt", handler.filenames.get(1));
        assertEquals(TYPE_TXT, handler.mediaTypes.get(1));


        // Outlook with a pdf and another outlook message
        handler = process("testMSG_att_msg.msg", extractor, true);
        assertEquals(2, handler.filenames.size());
        assertEquals(2, handler.mediaTypes.size());

        assertEquals("Test Attachment.msg", handler.filenames.get(0));
        assertEquals(TYPE_MSG, handler.mediaTypes.get(0));

        assertEquals("smbprn.00009008.KdcPjl.pdf", handler.filenames.get(1));
        assertEquals(TYPE_PDF, handler.mediaTypes.get(1));
    }
Office files which have other office files
embedded into them. The embedded office files
will sometimes have images in them.
<p/>
eg xls
-> word
-> image
-> image
-> powerpoint
-> excel
-> image
tika-parsers/tika-parsers-standard/tika-parsers-standard-package/src/test/java/org/apache/tika/parser/microsoft/POIContainerExtractionTest.java