bug4372743.java

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/*
 * @test
 * @bug 4372743
 * @summary test that checks transitions of ERA and YEAR which are caused by add(MONTH).
 * @library /java/text/testlib
 */

import java.util.GregorianCalendar;
import java.util.TimeZone;

import static java.util.GregorianCalendar.*;

public class bug4372743 extends IntlTest {

    public static void main(String[] args) throws Exception {
        new bug4372743().run(args);
    }

    private int[][] data = {
        {AD, 2, MARCH},
        {AD, 2, FEBRUARY},
        {AD, 2, JANUARY},
        {AD, 1, DECEMBER},
        {AD, 1, NOVEMBER},
        {AD, 1, OCTOBER},
        {AD, 1, SEPTEMBER},
        {AD, 1, AUGUST},
        {AD, 1, JULY},
        {AD, 1, JUNE},
        {AD, 1, MAY},
        {AD, 1, APRIL},
        {AD, 1, MARCH},
        {AD, 1, FEBRUARY},
        {AD, 1, JANUARY},
        {BC, 1, DECEMBER},
        {BC, 1, NOVEMBER},
        {BC, 1, OCTOBER},
        {BC, 1, SEPTEMBER},
        {BC, 1, AUGUST},
        {BC, 1, JULY},
        {BC, 1, JUNE},
        {BC, 1, MAY},
        {BC, 1, APRIL},
        {BC, 1, MARCH},
        {BC, 1, FEBRUARY},
        {BC, 1, JANUARY},
        {BC, 2, DECEMBER},
        {BC, 2, NOVEMBER},
        {BC, 2, OCTOBER}};
    private int tablesize = data.length;

    private void check(GregorianCalendar gc, int index) {
        if (gc.get(ERA) != data[index][ERA]) {
            errln("Invalid era :" + gc.get(ERA)
                    + ", expected :" + data[index][ERA]);
        }
        if (gc.get(YEAR) != data[index][YEAR]) {
            errln("Invalid year :" + gc.get(YEAR)
                    + ", expected :" + data[index][YEAR]);
        }
        if (gc.get(MONTH) != data[index][MONTH]) {
            errln("Invalid month :" + gc.get(MONTH)
                    + ", expected :" + data[index][MONTH]);
        }
    }

    public void Test4372743() {
        GregorianCalendar gc;
        TimeZone saveZone = TimeZone.getDefault();

        try {
            TimeZone.setDefault(TimeZone.getTimeZone("PST"));

            /* Set March 3, A.D. 2 */
            gc = new GregorianCalendar(2, MARCH, 3);
            for (int i = 0; i < tablesize; i++) {
                check(gc, i);
                gc.add(MONTH, -1);
            }

            /* Again, Set March 3, A.D. 2 */
            gc = new GregorianCalendar(2, MARCH, 3);
            for (int i = 0; i < tablesize; i += 7) {
                check(gc, i);
                gc.add(MONTH, -7);
            }

            /* Set March 10, 2 B.C. */
            gc = new GregorianCalendar(2, OCTOBER, 10);
            gc.add(YEAR, -3);
            for (int i = tablesize - 1; i >= 0; i--) {
                check(gc, i);
                gc.add(MONTH, 1);
            }

            /* Again, Set March 10, 2 B.C. */
            gc = new GregorianCalendar(2, OCTOBER, 10);
            gc.add(YEAR, -3);
            for (int i = tablesize - 1; i >= 0; i -= 8) {
                check(gc, i);
                gc.add(MONTH, 8);
            }
        } finally {
            TimeZone.setDefault(saveZone);
        }
    }
}