diff --git a/test/diskiotest.cc b/test/diskiotest.cc
index 98d578e..e368a64 100644
--- a/test/diskiotest.cc
+++ b/test/diskiotest.cc
@@ -10,6 +10,7 @@ double d_PI = 3.14159265358979323846;
 int main (int argc, char* argv[]) {
 
     base::diskio test (base::diskio::GZ_FILE);
+    base::diskio test_xml (base::diskio::XML_FILE);
     base::flat fl;
     
     char *block = new char[256];
@@ -33,7 +34,7 @@ int main (int argc, char* argv[]) {
     test.put_block ("block", block, 256);
     
     // a flat can contain other flats too
-    fl.put_string ("string", "Another flat");
+    fl.put_string ("string", "Another flat so on.");
     fl.put_flat ("test", test);
     test.put_flat ("flat", fl);
     
@@ -45,15 +46,34 @@ int main (int argc, char* argv[]) {
     // write record to disk
     cout << "Writing data to disk ..." << endl;
     test.put_record ("diskio.test");
-    
+    // FIXME:This segfaults at the end
+    // test_xml = test;
+    test_xml.copy(test);
+    if (test.checksum () != test_xml.checksum ())
+        cout << "Checksum mismatch!" << endl;
+
+    cout << "Writing data to disk (xml) ..." << endl;
+    test_xml.put_record ("diskiotest.xml");
+    if (test.checksum () != test_xml.checksum ())
+        cout << "Checksum mismatch!" << endl;
     // read record from disk
     cout << "Reading data from disk" << endl;
     bool b = test.get_record ("diskio.test");
     if (b == true) cout << "Reading successful" << endl;
 
+    cout << "Reading data from disk (xml)" << endl;
+    b = test_xml.get_record ("diskiotest.xml");
+    if (b == true) cout << "Reading successful" << endl;
+
     // print checksum of data read
     cout << "Checksum: " << (std::hex) << test.checksum () << (std::dec) << endl;
-    
+
+    // cheat and just compare checksum for xml.
+    cout << "XML Checksum : "<< (std::hex) << test_xml.checksum () << (std::dec);
+    if (test.checksum () != test_xml.checksum ())
+        cout << " mismatch!";
+    cout << endl;
+
     // unpack all kind of data using get_*
     // this may happen in any order, although using the original
     // order is much more efficient.