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[BAEL-4583] Improvement- Java Period

This commit is contained in:
Kai Yuan 2020-09-11 01:08:12 +02:00
parent 8928164d22
commit 4ce6b34c06
1 changed files with 43 additions and 20 deletions
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63
core-java-modules/core-java-date-operations-1/src/test/java/com/baeldung/date/DateDiffUnitTest.java
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@ -1,6 +1,8 @@
package com.baeldung.date; package com.baeldung.date;
import static org.junit.Assert.assertEquals; import org.joda.time.Days;
import org.joda.time.Minutes;
import org.junit.Test;
import java.text.ParseException; import java.text.ParseException;
import java.text.SimpleDateFormat; import java.text.SimpleDateFormat;
@ -16,7 +18,7 @@ import java.util.Locale;
import java.util.TimeZone; import java.util.TimeZone;
import java.util.concurrent.TimeUnit; import java.util.concurrent.TimeUnit;
import org.junit.Test; import static org.junit.Assert.*;
public class DateDiffUnitTest { public class DateDiffUnitTest {
@ -29,18 +31,39 @@ public class DateDiffUnitTest {
long diffInMillies = Math.abs(secondDate.getTime() - firstDate.getTime()); long diffInMillies = Math.abs(secondDate.getTime() - firstDate.getTime());
long diff = TimeUnit.DAYS.convert(diffInMillies, TimeUnit.MILLISECONDS); long diff = TimeUnit.DAYS.convert(diffInMillies, TimeUnit.MILLISECONDS);
assertEquals(diff, 6); assertEquals(6, diff);
} }
@Test @Test
public void givenTwoDatesInJava8_whenDifferentiating_thenWeGetSix() { public void givenTwoDatesInJava8_whenUsingPeriodGetDays_thenWorks() {
LocalDate now = LocalDate.now(); LocalDate aDate = LocalDate.of(2020, 9, 11);
LocalDate sixDaysBehind = now.minusDays(6); LocalDate sixDaysBehind = aDate.minusDays(6);
Period period = Period.between(now, sixDaysBehind); Period period = Period.between(aDate, sixDaysBehind);
int diff = Math.abs(period.getDays()); int diff = Math.abs(period.getDays());
assertEquals(diff, 6); assertEquals(6, diff);
}
@Test
public void givenTwoDatesInJava8_whenUsingPeriodGetDays_thenDoesNotWork() {
LocalDate aDate = LocalDate.of(2020, 9, 11);
LocalDate sixtyDaysBehind = aDate.minusDays(60);
Period period = Period.between(aDate, sixtyDaysBehind);
int diff = Math.abs(period.getDays());
//not equals
assertNotEquals(60, diff);
}
@Test
public void givenTwoDatesInJava8_whenUsingPeriod_thenWeGet0Year1Month29Days() {
LocalDate aDate = LocalDate.of(2020, 9, 11);
LocalDate sixtyDaysBehind = aDate.minusDays(60);
Period period = Period.between(aDate, sixtyDaysBehind);
int years = Math.abs(period.getYears());
int months = Math.abs(period.getMonths());
int days = Math.abs(period.getDays());
assertArrayEquals(new int[] { 0, 1, 29 }, new int[] { years, months, days });
} }
@Test @Test
@ -51,7 +74,7 @@ public class DateDiffUnitTest {
Duration duration = Duration.between(now, sixMinutesBehind); Duration duration = Duration.between(now, sixMinutesBehind);
long diff = Math.abs(duration.toMinutes()); long diff = Math.abs(duration.toMinutes());
assertEquals(diff, 6); assertEquals(6, diff);
} }
@Test @Test
@ -61,7 +84,7 @@ public class DateDiffUnitTest {
long diff = ChronoUnit.SECONDS.between(now, tenSecondsLater); long diff = ChronoUnit.SECONDS.between(now, tenSecondsLater);
assertEquals(diff, 10); assertEquals(10, diff);
} }
@Test @Test
@ -69,9 +92,9 @@ public class DateDiffUnitTest {
LocalDateTime ldt = LocalDateTime.now(); LocalDateTime ldt = LocalDateTime.now();
ZonedDateTime now = ldt.atZone(ZoneId.of("America/Montreal")); ZonedDateTime now = ldt.atZone(ZoneId.of("America/Montreal"));
ZonedDateTime sixDaysBehind = now.withZoneSameInstant(ZoneId.of("Asia/Singapore")) ZonedDateTime sixDaysBehind = now.withZoneSameInstant(ZoneId.of("Asia/Singapore"))
.minusDays(6); .minusDays(6);
long diff = ChronoUnit.DAYS.between(sixDaysBehind, now); long diff = ChronoUnit.DAYS.between(sixDaysBehind, now);
assertEquals(diff, 6); assertEquals(6, diff);
} }
@Test @Test
@ -81,7 +104,7 @@ public class DateDiffUnitTest {
long diff = now.until(tenSecondsLater, ChronoUnit.SECONDS); long diff = now.until(tenSecondsLater, ChronoUnit.SECONDS);
assertEquals(diff, 10); assertEquals(10, diff);
} }
@Test @Test
@ -89,10 +112,9 @@ public class DateDiffUnitTest {
org.joda.time.LocalDate now = org.joda.time.LocalDate.now(); org.joda.time.LocalDate now = org.joda.time.LocalDate.now();
org.joda.time.LocalDate sixDaysBehind = now.minusDays(6); org.joda.time.LocalDate sixDaysBehind = now.minusDays(6);
org.joda.time.Period period = new org.joda.time.Period(now, sixDaysBehind); long diff = Math.abs(Days.daysBetween(now, sixDaysBehind).getDays());
long diff = Math.abs(period.getDays());
assertEquals(diff, 6); assertEquals(6, diff);
} }
@Test @Test
@ -100,8 +122,9 @@ public class DateDiffUnitTest {
org.joda.time.LocalDateTime now = org.joda.time.LocalDateTime.now(); org.joda.time.LocalDateTime now = org.joda.time.LocalDateTime.now();
org.joda.time.LocalDateTime sixMinutesBehind = now.minusMinutes(6); org.joda.time.LocalDateTime sixMinutesBehind = now.minusMinutes(6);
org.joda.time.Period period = new org.joda.time.Period(now, sixMinutesBehind); long diff = Math.abs(Minutes.minutesBetween(now, sixMinutesBehind).getMinutes());
long diff = Math.abs(period.getDays()); assertEquals(6, diff);
} }
@Test @Test
@ -111,6 +134,6 @@ public class DateDiffUnitTest {
long diff = Math.abs(now.numDaysFrom(sixDaysBehind)); long diff = Math.abs(now.numDaysFrom(sixDaysBehind));
assertEquals(diff, 6); assertEquals(6, diff);
} }
} }