Java serialization testing

Question

Does anyone know if there is a library that exists to help test if an object graph is fully serializable? It would probably be as simple as writing it out and reading it back in, but I figured someone must have abstracted this already - I just can't find it.

Amir Afghani · Accepted Answer · 2010-05-11 16:50:29Z

2

Read this article.

and note the following highly re-usable function :

public void testIsSerializable() 
   throws JaxenException, IOException {

    BaseXPath path = new BaseXPath("//foo", new DocumentNavigator());
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    ObjectOutputStream oos = new ObjectOutputStream(out);
    oos.writeObject(path);
    oos.close();
    assertTrue(out.toByteArray().length > 0);

}

The article also explains how to test whether the objects were correctly serialized.

answered May 11, 2010 at 16:50

Amir Afghani

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2 Comments

Jeff Storey Over a year ago

Thanks, I just figured someone had already packaged it up into a single method call.

user207421 Over a year ago

The length test is pointless. It cannot possibly fail. An object stream has a header, defined by the protocol.

user207421 · Accepted Answer · 2010-05-12 02:15:37Z

1

It would probably be as simple as writing it out and reading it back in

It's even simpler. Just write it out. If that succeeded, everything is serializable.

answered May 12, 2010 at 2:15

user207421

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