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From "tatyana doubtsova (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-59) java.text.MessageFormat.toPattern() causes IndexOutOfBoundsException in StringBuffer.setLength method
Date Wed, 01 Feb 2006 04:42:46 GMT
java.text.MessageFormat.toPattern() causes IndexOutOfBoundsException in  StringBuffer.setLength
method
------------------------------------------------------------------------------------------------------

         Key: HARMONY-59
         URL: http://issues.apache.org/jira/browse/HARMONY-59
     Project: Harmony
        Type: Bug
  Components: Classlib  
    Reporter: tatyana doubtsova


Problem details:
According to j2se 1.4.2, method toPattern() should return a pattern representing the current
state of the message format. However, Harmony throws IndexOutOfBoundsException for "CHOICE
{1,choice}" message format.

Code for reproducing Test.java:
import java.text.*;
	public class Test {
		public static void main(String[] args) {
			MessageFormat mf = new MessageFormat("CHOICE {1,choice}");
			String ptrn = mf.toPattern();
			System.out.println("ptrn = " + ptrn);
	    }
	}

Steps to Reproduce:
1. Build Harmony (check-out on 2006-01-30) j2se subset as described in README.txt.
2. Compile Test.java using BEA 1.4 javac
> javac -d . Test.java
3. Run java using compatible VM (J9)
> java -showversion Test

Output:
java version 1.4.2 (subset)
(c) Copyright 1991, 2005 The Apache Software Foundation or its licensors, as applicable.
Exception in thread "main" java.lang.IndexOutOfBoundsException
	at java.lang.StringBuffer.setLength(StringBuffer.java:810)
	at java.text.ChoiceFormat.toPattern(ChoiceFormat.java:386)
	at java.text.MessageFormat.toPattern(MessageFormat.java:802)
	at Test.main(Test.java:5)

Output on BEA 1.4.2 to compare with:
ptrn = CHOICE {1,choice,}

Suggested junit test case:

package org.apache.harmony.tests.java.text;

import java.text.MessageFormat;
import java.util.Locale;

import junit.framework.TestCase;

public class MessageFormatTest extends TestCase {

    public static void main(String[] args) {
	junit.textui.TestRunner.run(MessageFormatTest.class);
    }

    public void test_toPattern() {
        try {
            MessageFormat mf = new MessageFormat("CHOICE {1,choice}");
            String ptrn = mf.toPattern();
        } catch (Exception e) {
	    fail("Assert 0: Unexpected exception " + e);			
        }
    }   
}



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