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this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
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http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
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package org.apache.poi.ss.formula.functions;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.ss.formula.eval.BoolEval;
import org.apache.poi.ss.formula.eval.NumberEval;
import org.apache.poi.ss.formula.eval.ValueEval;
import org.apache.poi.util.LocaleUtil;
import org.junit.Test;
public final class TestDays360 {
/**
* @param month 1-based
*/
private static Date makeDate(int year, int month, int day) {
Calendar cal = LocaleUtil.getLocaleCalendar(year, month-1, day);
return cal.getTime();
}
private static Date decrementDay(Date d) {
Calendar c = LocaleUtil.getLocaleCalendar();
c.setTime(d);
c.add(Calendar.DAY_OF_MONTH, -1);
return c.getTime();
}
@Test
public void testBasic() {
confirm(120, 2009, 1, 15, 2009, 5, 15);
confirm(158, 2009, 1, 26, 2009, 7, 4);
// same results in leap years
confirm(120, 2008, 1, 15, 2008, 5, 15);
confirm(158, 2008, 1, 26, 2008, 7, 4);
// longer time spans
confirm(562, 2008, 8, 11, 2010, 3, 3);
confirm(916, 2007, 2, 23, 2009, 9, 9);
// other tests
confirm(1, makeDate(1993, 2, 28), makeDate(1993, 3, 1), false);
confirm(1, makeDate(1996, 2, 29), makeDate(1996, 3, 1), false);
confirm(-2, makeDate(1993, 2, 28), makeDate(1993, 2, 28), false);
confirm(3, makeDate(1993, 2, 28), makeDate(1993, 3, 1), true);
confirm(2, makeDate(1996, 2, 29), makeDate(1996, 3, 1), true);
// from https://support.office.com/en-us/article/DAYS360-function-B9A509FD-49EF-407E-94DF-0CBDA5718C2A
confirm(1, makeDate(2011, 1, 30), makeDate(2011, 2, 1), false);
confirm(360, makeDate(2011, 1, 1), makeDate(2011, 12, 31), false);
confirm(30, makeDate(2011, 1, 1), makeDate(2011, 2, 1), false);
}
private static void confirm(int expResult, int y1, int m1, int d1, int y2, int m2, int d2) {
confirm(expResult, makeDate(y1, m1, d1), makeDate(y2, m2, d2), false);
confirm(-expResult, makeDate(y2, m2, d2), makeDate(y1, m1, d1), false);
}
/**
* The <tt>method</tt> parameter only makes a difference when the second parameter
* is the last day of the month that does <em>not</em> have 30 days.
*/
@Test
public void testMonthBoundaries() {
// jan
confirmMonthBoundary(false, 2001, 1, 0, 0, 2, 3, 4);
confirmMonthBoundary(true, 2001, 1, 0, 0, 1, 2, 3);
// feb
confirmMonthBoundary(false, 2001, 2,-2, 1, 2, 3, 4);
confirmMonthBoundary(true, 2001, 2, 0, 1, 2, 3, 4);
// mar
confirmMonthBoundary(false, 2001, 3, 0, 0, 2, 3, 4);
confirmMonthBoundary(true, 2001, 3, 0, 0, 1, 2, 3);
// apr
confirmMonthBoundary(false, 2001, 4, 0, 1, 2, 3, 4);
confirmMonthBoundary(true, 2001, 4, 0, 1, 2, 3, 4);
// may
confirmMonthBoundary(false, 2001, 5, 0, 0, 2, 3, 4);
confirmMonthBoundary(true, 2001, 5, 0, 0, 1, 2, 3);
// jun
confirmMonthBoundary(false, 2001, 6, 0, 1, 2, 3, 4);
confirmMonthBoundary(true, 2001, 6, 0, 1, 2, 3, 4);
// leap year
confirmMonthBoundary(false, 2012, 2, -1, 1, 2, 3, 4);
confirmMonthBoundary(true, 2012, 2, 0, 1, 2, 3, 4);
// bug 60029
Date start = makeDate(2018, 2, 28);
Date end = makeDate(2018, 3, 31);
confirm(30, start, end, false);
// examples from https://support.office.com/en-us/article/DAYS360-function-B9A509FD-49EF-407E-94DF-0CBDA5718C2A
start = makeDate(2011, 1, 30);
end = makeDate(2011, 2, 1);
confirm(1, start, end, false);
start = makeDate(2011, 1, 1);
end = makeDate(2011, 12, 31);
confirm(360, start, end, false);
start = makeDate(2011, 1, 1);
end = makeDate(2011, 2, 1);
confirm(30, start, end, false);
}
/**
* @param monthNo 1-based
*/
private static void confirmMonthBoundary(boolean method, int year, int monthNo, int...diffs) {
Date firstDayOfNextMonth = makeDate(year, monthNo+1, 1);
Date secondArg = decrementDay(firstDayOfNextMonth);
Date firstArg = secondArg;
for (int expResult : diffs) {
confirm(expResult, firstArg, secondArg, method);
firstArg = decrementDay(firstArg);
}
}
private static void confirm(int expResult, Date firstArg, Date secondArg, boolean method) {
ValueEval ve;
if (method) {
ve = invokeDays360(convert(firstArg), convert(secondArg), BoolEval.TRUE);
} else {
ve = invokeDays360(convert(firstArg), convert(secondArg));
}
assertTrue("wrong return type (" + ve.getClass().getName() + ")", ve instanceof NumberEval);
NumberEval numberEval = (NumberEval) ve;
String err = String.format(Locale.ROOT, "days360(%tF,%tF,%b) wrong result", firstArg, secondArg, method);
assertEquals(err, expResult, numberEval.getNumberValue(), 0);
}
private static ValueEval invokeDays360(ValueEval...args) {
return new Days360().evaluate(args, -1, -1);
}
private static NumberEval convert(Date d) {
return new NumberEval(HSSFDateUtil.getExcelDate(d));
}
}