@Test
    public void testEmbeddedEquation() throws Exception {
        //file derives from govdocs1 863534.doc
        List<Metadata> metadataList = getRecursiveMetadata("testMSEquation-govdocs-863534.doc");
        assertEquals(3, metadataList.size());
        assertEquals("application/vnd.ms-equation", metadataList.get(2).get(Metadata.CONTENT_TYPE));
    }
Office files with embedded images, but no other
office files in them
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/test/java/org/apache/tika/parser/microsoft/POIContainerExtractionTest.java