@Test
    public void testMSAccessByName() {
        MimeTypes mimeTypes = MimeTypes.getDefaultMimeTypes();
        MediaType result = mimeTypes.getMimeType("testfile1.accdb").getType();
        assertEquals("application/x-msaccess", result.toString());
    }
TIKA-2460 Test loading of custom-mimetypes.xml from sys prop.
tika-core/src/test/java/org/apache/tika/mime/MimeTypesReaderTest.java