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// Test Calendar.add().
// Copyright (c) 2001, 2006 Red Hat
// Written by Tom Tromey <tromey@redhat.com>
// This file is part of Mauve.
// Mauve is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
// Mauve is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Mauve; see the file COPYING. If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
// Tags: JDK1.1
package gnu.testlet.java.util.Calendar;
import gnu.testlet.Testlet;
import gnu.testlet.TestHarness;
import java.text.*;
import java.util.*;
public class add implements Testlet
{
public void test (TestHarness harness)
{
java.util.TimeZone tz = java.util.TimeZone.getTimeZone ("GMT");
DateFormat cdf = new SimpleDateFormat ("EEE, d MMM yyyy HH:mm:ss zzz",
Locale.US);
cdf.setTimeZone (tz);
// We use the US locale since we need a fixed one, and this one I
// understand.
Calendar k = Calendar.getInstance (tz, Locale.US);
Date epoch = new Date (0);
k.setTime (epoch);
// Just double-check to make sure the tests themselves are ok.
harness.check (cdf.format (epoch), "Thu, 1 Jan 1970 00:00:00 GMT");
harness.check (k.getTime (), epoch);
// No-op.
k.add (Calendar.YEAR, 0);
harness.check (k.getTime (), epoch, "no-op add()");
k.add (Calendar.YEAR, 12);
harness.check (k.get (Calendar.YEAR), 1982, "add() to year");
k.add (Calendar.YEAR, -1);
harness.check (k.get (Calendar.YEAR), 1981);
// Month or hour shouldn't change.
harness.check (k.get (Calendar.MONTH), 0);
harness.check (k.get (Calendar.HOUR_OF_DAY), 0);
// Update the hour and the day should change.
k.add (Calendar.HOUR_OF_DAY, 30);
harness.check (k.get (Calendar.HOUR_OF_DAY), 6, "add() to hour");
harness.check (k.get (Calendar.DATE), 2);
k.add (Calendar.HOUR_OF_DAY, -20);
harness.check (k.get (Calendar.HOUR_OF_DAY), 10);
harness.check (k.get (Calendar.DATE), 1);
// Update the month and the year should change.
k.add (Calendar.MONTH, -13);
harness.check (k.get (Calendar.MONTH), Calendar.DECEMBER,
"add() to month");
harness.check (k.get (Calendar.YEAR), 1979);
k.add (Calendar.MONTH, 2);
harness.check (k.get (Calendar.MONTH), Calendar.FEBRUARY);
harness.check (k.get (Calendar.YEAR), 1980);
harness.check (k.get (Calendar.DATE), 1);
// 1980 was a leap year.
k.add (Calendar.DATE, 28);
harness.check (k.get (Calendar.MONTH), Calendar.FEBRUARY, "leap year");
harness.check (k.get (Calendar.DATE), 29);
k.add (Calendar.DATE, 1);
harness.check (k.get (Calendar.MONTH), Calendar.MARCH);
harness.check (k.get (Calendar.DATE), 1);
harness.check (cdf.format (k.getTime ()),
"Sat, 1 Mar 1980 10:00:00 GMT",
"wrap up");
testPreviousDate(harness);
}
public void testPreviousDate(TestHarness harness)
{
Calendar calendar = Calendar.getInstance();
Date now = new Date();
// Calculate the start of today.
calendar.setTime(now);
calendar.clear(Calendar.HOUR_OF_DAY);
calendar.clear(Calendar.MINUTE);
calendar.clear(Calendar.SECOND);
calendar.clear(Calendar.MILLISECOND);
Date todayStart = calendar.getTime();
// Calculate the start of yesterday.
calendar.setTime(now);
calendar.add(Calendar.DATE, -1); // this change shouldn't be lost
calendar.clear(Calendar.HOUR_OF_DAY);
calendar.clear(Calendar.MINUTE);
calendar.clear(Calendar.SECOND);
calendar.clear(Calendar.MILLISECOND);
Date yesterdayStart = calendar.getTime();
harness.check(yesterdayStart.before(todayStart),
"PR27362: Check that clear didn't swallow a previous add() call");
}
}
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