Fixed incorrect week numbers in DateField (#14437)

Daylight saving time caused problems with the week number calculation
in the DateTimeService.getISOWeekNumber(Date d) method. If the given
date was inside a DST period, there was a rounding error when calculating
the number of days from the beginning of the year. As a result the week
numbers were calculated incorrectly in a case where the year started with
a Thursday (like for example 2015 and 2026).

Change-Id: Ib3d045ea0b9a1acc44b6f28487b064b3c2b76bb9

1 files changed, 10 insertions, 0 deletions

diff --git a/client/tests/src/com/vaadin/client/DateTimeServiceTest.java b/client/tests/src/com/vaadin/client/DateTimeServiceTest.java
index 3f4828678f..f9351d1cc0 100755
--- a/client/tests/src/com/vaadin/client/DateTimeServiceTest.java
+++ b/client/tests/src/com/vaadin/client/DateTimeServiceTest.java
@@ -48,6 +48,16 @@ public class DateTimeServiceTest extends TestCase {
         isoWeekNumbers.put(getDate(2010, 1, 4), 1);
         isoWeekNumbers.put(getDate(2010, 1, 5), 1);
         isoWeekNumbers.put(getDate(2010, 10, 10), 40);
+        isoWeekNumbers.put(getDate(2015, 3, 24), 13);
+        isoWeekNumbers.put(getDate(2015, 3, 31), 14);
+        isoWeekNumbers.put(getDate(2015, 10, 13), 42);
+        isoWeekNumbers.put(getDate(2015, 10, 20), 43);
+        isoWeekNumbers.put(getDate(2015, 10, 27), 44);
+        isoWeekNumbers.put(getDate(2026, 3, 24), 13);
+        isoWeekNumbers.put(getDate(2026, 3, 31), 14);
+        isoWeekNumbers.put(getDate(2026, 10, 13), 42);
+        isoWeekNumbers.put(getDate(2026, 10, 20), 43);
+        isoWeekNumbers.put(getDate(2026, 10, 27), 44);
 
     }