/** Test that number of "unknown" classes is propagated across multiple copies. */ @Test @SuppressWarnings("deprecation") public void testForeignClass() { SortedMapWritable inMap = new SortedMapWritable(); inMap.put(new Text("key"), new UTF8("value")); inMap.put(new Text("key2"), new UTF8("value2")); SortedMapWritable outMap = new SortedMapWritable(inMap); SortedMapWritable copyOfCopy = new SortedMapWritable(outMap); assertEquals(1, copyOfCopy.getNewClasses()); }