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From "Paulex Yang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-178) java.text.DateFormat$Field's contructor may replace predefined consts with new value in cache
Date Tue, 07 Mar 2006 02:13:29 GMT
java.text.DateFormat$Field's contructor may replace predefined consts with new value in cache
---------------------------------------------------------------------------------------------

         Key: HARMONY-178
         URL: http://issues.apache.org/jira/browse/HARMONY-178
     Project: Harmony
        Type: Bug
    Reporter: Paulex Yang


DataFormat$Field will cache some constants to be searched by method ofCalendarField(int),
but the predefined consts should not be replaced.

the testcases is as below:

import java.text.DateFormat;
import java.util.Calendar;
import junit.framework.TestCase;

public class DataFormatFieldTest extends TestCase{
	public void test_Constructor2() {
		MyField field = new MyField("day of month", Calendar.ERA);
		DateFormat.Field realField = DateFormat.Field
				.ofCalendarField(Calendar.ERA);
		assertSame("Modified calendar field with the same field number",
				DateFormat.Field.ERA, realField);
	}

	static class MyField extends DateFormat.Field {
		protected MyField(String fieldName, int calendarField) {
			super(fieldName, calendarField);
		}

		protected String getName() {
			return super.getName();
		}
	}
}

Run on RI 5.0, test case passes.
Run on Harmony, test case fail with message:
junit.framework.AssertionFailedError: Modified calendar field with the same field number expected
same:<java.text.DateFormat$Field(era)> was not:<DataFormatFieldTest$MyField(day of
month)>
	............

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