public void testSimple() throws Exception { File tmp = new File("tmp"); PersistentMap<String> pm = new PersistentMap<String>(new File(tmp, "simple"), String.class); try { assertNull(pm.put("abc", "def")); assertEquals("def", pm.get("abc")); pm.close(); PersistentMap<String> pm2 = new PersistentMap<String>(new File(tmp, "simple"), String.class); assertEquals("def", pm2.get("abc")); assertEquals(Arrays.asList("abc"), new ArrayList<String>(pm2.keySet())); for (Map.Entry<String, String> e : pm2.entrySet()) { e.setValue("XXX"); } assertEquals("XXX", pm2.get("abc")); pm2.close(); } finally { pm.close(); IO.delete(tmp); } }