test/java/util/Hashtable/SimpleSerialization.java

Print this page
rev 5431 : 7126277: Alternative hashing implementation

@@ -32,52 +32,62 @@
  * @author Neil Richards <neil.richards@ngmr.net>, <neil_richards@uk.ibm.com>
  */
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
-import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.PrintWriter;
 import java.io.StringWriter;
 import java.util.Hashtable;
+import java.util.Map;
 
 public class SimpleSerialization {
     public static void main(final String[] args) throws Exception {
         Hashtable<String, String> h1 = new Hashtable<>();
 
+        System.err.println("*** BEGIN TEST ***");
+
         h1.put("key", "value");
 
         final ByteArrayOutputStream baos = new ByteArrayOutputStream();
-        final ObjectOutputStream oos = new ObjectOutputStream(baos);
-
+        try (ObjectOutputStream oos = new ObjectOutputStream(baos)) {
         oos.writeObject(h1);
-        oos.close();
+        }
 
         final byte[] data = baos.toByteArray();
         final ByteArrayInputStream bais = new ByteArrayInputStream(data);
-        final ObjectInputStream ois = new ObjectInputStream(bais);
+        final Object deserializedObject;
+        try (ObjectInputStream ois = new ObjectInputStream(bais)) {
+            deserializedObject = ois.readObject();
+        }
 
-        final Object deserializedObject = ois.readObject();
-        ois.close();
+        if(!h1.getClass().isInstance(deserializedObject)) {
+             throw new RuntimeException("Result not assignable to type of h1");
+        }
 
         if (false == h1.equals(deserializedObject)) {
+             Hashtable<String, String> d1 = (Hashtable<String, String>) h1;
+            for(Map.Entry entry: h1.entrySet()) {
+                System.err.println("h1.key::" + entry.getKey() + " d1.containsKey()::" + d1.containsKey((String) entry.getKey()));
+                System.err.println("h1.value::" + entry.getValue() + " d1.contains()::" + d1.contains(entry.getValue()));
+                System.err.println("h1.value == d1.value " + entry.getValue().equals(d1.get((String) entry.getKey())));
+            }
+
             throw new RuntimeException(getFailureText(h1, deserializedObject));
         }
     }
 
     private static String getFailureText(final Object orig, final Object copy) {
         final StringWriter sw = new StringWriter();
-        final PrintWriter pw = new PrintWriter(sw);
-
+        try (PrintWriter pw = new PrintWriter(sw)) {
         pw.println("Test FAILED: Deserialized object is not equal to the original object");
         pw.print("\tOriginal: ");
         printObject(pw, orig).println();
         pw.print("\tCopy:     ");
         printObject(pw, copy).println();
-
-        pw.close();
+        }
         return sw.toString();
     }
 
     private static PrintWriter printObject(final PrintWriter pw, final Object o) {
         pw.printf("%s@%08x", o.getClass().getName(), System.identityHashCode(o));