test/java/time/tck/java/time/format/TCKDateTimeFormatterBuilder.java

*** 791,801 ****
--- 791,837 ----
      public void test_modJulianFieldValues(int y, int m, int d, String expected) throws Exception {
          DateTimeFormatter df = new DateTimeFormatterBuilder().appendPattern("g").toFormatter();
           assertEquals(LocalDate.of(y, m, d).format(df), expected);
      }
  
+     //-----------------------------------------------------------------------
+     @DataProvider(name="dayOfYearFieldPattern")
+     Object[][] data_dayOfYearFieldPattern() {
+         return new Object[][] {
+                 {"D", "1"},
+                 {"D", "123"},
+                 {"DD", "12"},
+                 {"DD", "123"},
+                 {"DDD", "123"},
+                 {"DDD", "12345"},
+         };
+     }
+ 
+     @Test(dataProvider="dayOfYearFieldPattern")
+     public void test_dayOfYearFieldPattern(String pattern, String input) throws Exception {
+         DateTimeFormatter.ofPattern(pattern).parse(input);
+     }
  
+     @DataProvider(name="dayOfYearFieldValues")
+     Object[][] data_dayOfYearFieldValues() {
+         return new Object[][] {
+                 {2016, 1, 1, "D", "1"},
+                 {2016, 1, 31, "D", "31"},
+                 {2016, 1, 1, "DD", "01"},
+                 {2016, 1, 31, "DD", "31"},
+                 {2016, 4, 9, "DD", "100"},
+                 {2016, 1, 1, "DDD", "001"},
+                 {2016, 1, 31, "DDD", "031"},
+                 {2016, 4, 9, "DDD", "100"},
+         };
+     }
+ 
+     @Test(dataProvider="dayOfYearFieldValues")
+     public void test_dayOfYearFieldValues(int y, int m, int d, String pattern, String expected) throws Exception {
+         DateTimeFormatter df = new DateTimeFormatterBuilder().appendPattern(pattern).toFormatter();
+         assertEquals(LocalDate.of(y, m, d).format(df), expected);
+     }
      //-----------------------------------------------------------------------
      @Test
      public void test_adjacent_strict_firstFixedWidth() throws Exception {
          // succeeds because both number elements are fixed width
          DateTimeFormatter f = builder.appendValue(HOUR_OF_DAY, 2).appendValue(MINUTE_OF_HOUR, 2).appendLiteral('9').toFormatter(Locale.UK);