com.google.common.testing
Class SerializableTester

java.lang.Object
  com.google.common.testing.SerializableTester

@Beta
public final class SerializableTester
extends Object

Helper class for testing whether a class is serializable.

Unlike com.google.common.util.SerializationChecker, this class tests not only whether serialization succeeds, but also whether the serialized form is correct: i.e., whether an equivalent object can be reconstructed by deserializing the serialized form.

If serialization fails, you can use SerializationChecker to diagnose which referenced fields were not serializable.

Since:

10.0

Author:

Mike Bostock

Method Summary

static <T> T	reserialize(T object) Serializes and deserializes the specified object.
static <T> T	reserializeAndAssert(T object) Serializes and deserializes the specified object and verifies that the re-serialized object is equal to the provided object, that the hashcodes are identical, and that the class of the re-serialized object is identical to that of the original.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

reserialize

public static <T> T reserialize(T object)

Serializes and deserializes the specified object.

Note that the specified object may not be known by the compiler to be a Serializable instance, and is thus declared an Object. For example, it might be declared as a List.

Returns:

the re-serialized object

Throws:

RuntimeException - if the specified object was not successfully serialized or deserialized

reserializeAndAssert

public static <T> T reserializeAndAssert(T object)

Serializes and deserializes the specified object and verifies that the re-serialized object is equal to the provided object, that the hashcodes are identical, and that the class of the re-serialized object is identical to that of the original.

Note that the specified object may not be known by the compiler to be a Serializable instance, and is thus declared an Object. For example, it might be declared as a List.

Note also that serialization is not in general required to return an object that is equal to the original, nor is it required to return even an object of the same class. For example, if sublists of MyList instances were serializable, those sublists might implement a private MySubList type but serialize as a plain MyList to save space. So long as MyList has all the public supertypes of MySubList, this is safe. For these cases, for which reserializeAndAssert is too strict, use reserialize(T).

Returns:

the re-serialized object

Throws:

RuntimeException - if the specified object was not successfully serialized or deserialized

GuavaAsserts.TestAssertionFailure - if the re-serialized object is not equal to the original object, or if the hashcodes are different.