test for proper abbreviation of long names

Author: snoyes

Lib/test/test_calendar.py

@@ -715,6 +715,18 @@ def test_locale_calendar_weekday_names(self):
         # Any width shorter than the longest necessary should produce abbreviations
         self.assertNotEqual(get_weekday_names(max_length), get_weekday_names(max_length - 1))
 
+    # These locales have a weekday name longer than English's longest 'Wednesday'
+    # They should be properly abbreviated rather than truncated
+    @support.run_with_locale("LC_ALL", 
+            'Portuguese', 'pt_PT.UTF-8',
+            'German',  'de_DE.UTF-8',
+            'Russian', 'ru_RU.UTF-8',
+            'Sinhala', 'si_LK.UTF-8'
+    )
+    def test_locale_calendar_long_weekday_names(self):
+        get_weekday_names = lambda width: calendar.TextCalendar().formatweekheader(width).split()
+        self.assertEqual(get_weekday_names(4), get_weekday_names(9))
+
     def test_locale_calendar_formatmonthname(self):
         try:
             # formatmonthname uses the same month names regardless of the width argument.