File	Doc	Category	Size	Date	Package
SerializationTestHelper.java	API Doc	Apache log4j 1.2.15	4912	Sat Aug 25 00:09:34 BST 2007	org.apache.log4j.util

SerializationTestHelper

• java.lang.Object

Fields Summary

Constructors Summary
private SerializationTestHelper() Private constructor.

Methods Summary
public static void	assertSerializationEquals(java.lang.String witness, java.lang.Object obj, int[] skip, int endCompare) Checks the serialization of an object against an file containing the expected serialization. param witness name of file containing expected serialization. param obj object to be serialized. param skip positions in serialized stream that should not be compared. param endCompare position to stop comparison. throws Exception thrown on IO or serialization exception. ByteArrayOutputStream memOut = new ByteArrayOutputStream(); ObjectOutputStream objOut = new ObjectOutputStream(memOut); objOut.writeObject(obj); objOut.close(); assertStreamEquals(witness, memOut.toByteArray(), skip, endCompare);
public static void	assertStreamEquals(java.lang.String witness, byte[] actual, int[] skip, int endCompare) Asserts the serialized form of an object. param witness file name of expected serialization. param actual byte array of actual serialization. param skip positions to skip comparison. param endCompare position to stop comparison. throws IOException thrown on IO or serialization exception. File witnessFile = new File(witness); if (witnessFile.exists()) { int skipIndex = 0; byte[] expected = new byte[actual.length]; FileInputStream is = new FileInputStream(witnessFile); int bytesRead = is.read(expected); is.close(); if(bytesRead < endCompare) { TestCase.assertEquals(bytesRead, actual.length); } int endScan = actual.length; if (endScan > endCompare) { endScan = endCompare; } for (int i = 0; i < endScan; i++) { if ((skipIndex < skip.length) && (skip[skipIndex] == i)) { skipIndex++; } else { if (expected[i] != actual[i]) { TestCase.assertEquals( "Difference at offset " + i, expected[i], actual[i]); } } } } else { // // if the file doesn't exist then // assume that we are setting up and need to write it FileOutputStream os = new FileOutputStream(witnessFile); os.write(actual); os.close(); TestCase.fail("Writing witness file " + witness); }
public static java.lang.Object	deserializeStream(java.lang.String witness) Deserializes a specified file. param witness serialization file, may not be null. return deserialized object. throws Exception thrown on IO or deserialization exception. FileInputStream fileIs = new FileInputStream(witness); ObjectInputStream objIs = new ObjectInputStream(fileIs); return objIs.readObject();
public static java.lang.Object	serializeClone(java.lang.Object obj) Creates a clone by serializing object and deserializing byte stream. param obj object to serialize and deserialize. return clone throws IOException on IO error. throws ClassNotFoundException if class not found. ByteArrayOutputStream memOut = new ByteArrayOutputStream(); ObjectOutputStream objOut = new ObjectOutputStream(memOut); objOut.writeObject(obj); objOut.close(); ByteArrayInputStream src = new ByteArrayInputStream(memOut.toByteArray()); ObjectInputStream objIs = new ObjectInputStream(src); return objIs.readObject();