1 files changed, 111 insertions, 0 deletions
diff --git a/tests/client-side/com/vaadin/client/DateTimeServiceTest.java b/tests/client-side/com/vaadin/client/DateTimeServiceTest.java
new file mode 100755
index 0000000000..6852e9ec3f
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+++ b/tests/client-side/com/vaadin/client/DateTimeServiceTest.java
@@ -0,0 +1,111 @@
+package com.vaadin.client;
+
+import java.util.Calendar;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+
+import junit.framework.TestCase;
+
+import com.vaadin.client.DateTimeService;
+
+public class DateTimeServiceTest extends TestCase {
+
+    final long MILLISECONDS_PER_DAY = 24 * 3600 * 1000;
+
+    static Map<Date, Integer> isoWeekNumbers = new HashMap<Date, Integer>();
+    static {
+        isoWeekNumbers.put(getDate(2005, 02, 02), 5);
+
+        isoWeekNumbers.put(getDate(2005, 1, 1), 53);
+        isoWeekNumbers.put(getDate(2005, 1, 2), 53);
+        isoWeekNumbers.put(getDate(2005, 1, 3), 1);
+        isoWeekNumbers.put(getDate(2005, 1, 4), 1);
+        isoWeekNumbers.put(getDate(2005, 1, 5), 1);
+        isoWeekNumbers.put(getDate(2005, 1, 6), 1);
+        isoWeekNumbers.put(getDate(2005, 1, 7), 1);
+        isoWeekNumbers.put(getDate(2005, 1, 8), 1);
+        isoWeekNumbers.put(getDate(2005, 1, 9), 1);
+        isoWeekNumbers.put(getDate(2005, 1, 10), 2);
+        isoWeekNumbers.put(getDate(2005, 12, 31), 52);
+        isoWeekNumbers.put(getDate(2005, 12, 30), 52);
+        isoWeekNumbers.put(getDate(2005, 12, 29), 52);
+        isoWeekNumbers.put(getDate(2005, 12, 28), 52);
+        isoWeekNumbers.put(getDate(2005, 12, 27), 52);
+        isoWeekNumbers.put(getDate(2005, 12, 26), 52);
+        isoWeekNumbers.put(getDate(2005, 12, 25), 51);
+        isoWeekNumbers.put(getDate(2007, 1, 1), 1);
+        isoWeekNumbers.put(getDate(2007, 12, 30), 52);
+        isoWeekNumbers.put(getDate(2007, 12, 31), 1);
+        isoWeekNumbers.put(getDate(2008, 1, 1), 1);
+        isoWeekNumbers.put(getDate(2008, 12, 28), 52);
+        isoWeekNumbers.put(getDate(2008, 12, 29), 1);
+        isoWeekNumbers.put(getDate(2008, 12, 30), 1);
+        isoWeekNumbers.put(getDate(2008, 12, 31), 1);
+        isoWeekNumbers.put(getDate(2009, 1, 1), 1);
+        isoWeekNumbers.put(getDate(2009, 12, 31), 53);
+        isoWeekNumbers.put(getDate(2010, 1, 1), 53);
+        isoWeekNumbers.put(getDate(2010, 1, 2), 53);
+        isoWeekNumbers.put(getDate(2010, 1, 3), 53);
+        isoWeekNumbers.put(getDate(2010, 1, 4), 1);
+        isoWeekNumbers.put(getDate(2010, 1, 5), 1);
+        isoWeekNumbers.put(getDate(2010, 10, 10), 40);
+
+    }
+
+    /**
+     * Test all dates from 1990-1992 + some more and see that {@link Calendar}
+     * calculates the ISO week number like we do.
+     * 
+     */
+    public void testISOWeekNumbers() {
+        Calendar c = Calendar.getInstance();
+        c.set(1990, 1, 1);
+        long start = c.getTimeInMillis();
+
+        for (int i = 0; i < 1000; i++) {
+            Date d = new Date(start + i * MILLISECONDS_PER_DAY);
+            int expected = getCalendarISOWeekNr(d);
+            int calculated = DateTimeService.getISOWeekNumber(d);
+            assertEquals(d + " should be week " + expected, expected,
+                    calculated);
+
+        }
+    }
+
+    /**
+     * Verify that special cases are handled correctly by us (and
+     * {@link Calendar}).
+     * 
+     */
+    public void testSampleISOWeekNumbers() {
+        for (Date d : isoWeekNumbers.keySet()) {
+            // System.out.println("Sample: " + d);
+            int expected = isoWeekNumbers.get(d);
+            int calculated = DateTimeService.getISOWeekNumber(d);
+            assertEquals(d + " should be week " + expected
+                    + " (Java Calendar is wrong?)", expected,
+                    getCalendarISOWeekNr(d));
+            assertEquals(d + " should be week " + expected, expected,
+                    calculated);
+
+        }
+    }
+
+    private int getCalendarISOWeekNr(Date d) {
+        Calendar c = Calendar.getInstance();
+        c.setFirstDayOfWeek(Calendar.MONDAY);
+        c.setMinimalDaysInFirstWeek(4);
+        c.setTime(d);
+
+        return c.get(Calendar.WEEK_OF_YEAR);
+    }
+
+    private static Date getDate(int year, int month, int date) {
+        Calendar c = Calendar.getInstance();
+        c.clear();
+        c.set(year, month - 1, date);
+        return c.getTime();
+    }
+
+}