BAEL-924: How to get all LocalDates between two dates? (#2012)

2017-06-08 10:47:10 +05:00
parent 4453358bfb
commit e59ecbc864
2 changed files with 110 additions and 0 deletions
@@ -0,0 +1,66 @@
+package com.baeldung.java9.time;
+
+import java.time.LocalDate;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+import org.junit.Test;
+
+public class TimeApiTest {
+
+    @Test
+    public void givenGetDatesBetweenWithUsingJava7_WhenStartEndDate_thenDatesList() {
+        Date startDate = Calendar.getInstance().getTime();
+        Calendar endCalendar = Calendar.getInstance();
+        endCalendar.add(Calendar.DATE, 3);
+        Date endDate = endCalendar.getTime();
+
+        List<Date> dates = TimeApi.getDatesBetweenUsingJava7(startDate, endDate);
+        assertEquals(dates.size(), 3);
+
+        Calendar calendar = Calendar.getInstance();
+        Date date1 = calendar.getTime();
+        assertEquals(dates.get(0).getDay(), date1.getDay());
+        assertEquals(dates.get(0).getMonth(), date1.getMonth());
+        assertEquals(dates.get(0).getYear(), date1.getYear());
+
+        calendar.add(Calendar.DATE, 1);
+        Date date2 = calendar.getTime();
+        assertEquals(dates.get(1).getDay(), date2.getDay());
+        assertEquals(dates.get(1).getMonth(), date2.getMonth());
+        assertEquals(dates.get(1).getYear(), date2.getYear());
+
+        calendar.add(Calendar.DATE, 1);
+        Date date3 = calendar.getTime();
+        assertEquals(dates.get(2).getDay(), date3.getDay());
+        assertEquals(dates.get(2).getMonth(), date3.getMonth());
+        assertEquals(dates.get(2).getYear(), date3.getYear());
+    }
+
+    @Test
+    public void givenGetDatesBetweenWithUsingJava8_WhenStartEndDate_thenDatesList() {
+        LocalDate startDate = LocalDate.now();
+        LocalDate endDate = LocalDate.now().plusDays(3);
+
+        List<LocalDate> dates = TimeApi.getDatesBetweenUsingJava8(startDate, endDate);
+        assertEquals(dates.size(), 3);
+        assertEquals(dates.get(0), LocalDate.now());
+        assertEquals(dates.get(1), LocalDate.now().plusDays(1));
+        assertEquals(dates.get(2), LocalDate.now().plusDays(2));
+    }
+
+    @Test
+    public void givenGetDatesBetweenWithUsingJava9_WhenStartEndDate_thenDatesList() {
+        LocalDate startDate = LocalDate.now();
+        LocalDate endDate = LocalDate.now().plusDays(3);
+
+        List<LocalDate> dates = TimeApi.getDatesBetweenUsingJava9(startDate, endDate);
+        assertEquals(dates.size(), 3);
+        assertEquals(dates.get(0), LocalDate.now());
+        assertEquals(dates.get(1), LocalDate.now().plusDays(1));
+        assertEquals(dates.get(2), LocalDate.now().plusDays(2));
+    }
+
+}