1915         let yo_opt = |y, o| NaiveDate::from_yo_opt(y, o);  in test_date_from_yo()  localVariable
1918         assert_eq!(yo_opt(2012, 0), None);  in test_date_from_yo()
1919         assert_eq!(yo_opt(2012, 1), Some(ymd(2012, 1, 1)));  in test_date_from_yo()
1920         assert_eq!(yo_opt(2012, 2), Some(ymd(2012, 1, 2)));  in test_date_from_yo()
1921         assert_eq!(yo_opt(2012, 32), Some(ymd(2012, 2, 1)));  in test_date_from_yo()
1922         assert_eq!(yo_opt(2012, 60), Some(ymd(2012, 2, 29)));  in test_date_from_yo()
1923         assert_eq!(yo_opt(2012, 61), Some(ymd(2012, 3, 1)));  in test_date_from_yo()
1924         assert_eq!(yo_opt(2012, 100), Some(ymd(2012, 4, 9)));  in test_date_from_yo()
1925         assert_eq!(yo_opt(2012, 200), Some(ymd(2012, 7, 18)));  in test_date_from_yo()
1926         assert_eq!(yo_opt(2012, 300), Some(ymd(2012, 10, 26)));  in test_date_from_yo()
1927         assert_eq!(yo_opt(2012, 366), Some(ymd(2012, 12, 31)));  in test_date_from_yo()
1928         assert_eq!(yo_opt(2012, 367), None);  in test_date_from_yo()
1930         assert_eq!(yo_opt(2014, 0), None);  in test_date_from_yo()
1931         assert_eq!(yo_opt(2014, 1), Some(ymd(2014, 1, 1)));  in test_date_from_yo()
1932         assert_eq!(yo_opt(2014, 2), Some(ymd(2014, 1, 2)));  in test_date_from_yo()
1933         assert_eq!(yo_opt(2014, 32), Some(ymd(2014, 2, 1)));  in test_date_from_yo()
1934         assert_eq!(yo_opt(2014, 59), Some(ymd(2014, 2, 28)));  in test_date_from_yo()
1935         assert_eq!(yo_opt(2014, 60), Some(ymd(2014, 3, 1)));  in test_date_from_yo()
1936         assert_eq!(yo_opt(2014, 100), Some(ymd(2014, 4, 10)));  in test_date_from_yo()
1937         assert_eq!(yo_opt(2014, 200), Some(ymd(2014, 7, 19)));  in test_date_from_yo()
1938         assert_eq!(yo_opt(2014, 300), Some(ymd(2014, 10, 27)));  in test_date_from_yo()
1939         assert_eq!(yo_opt(2014, 365), Some(ymd(2014, 12, 31)));  in test_date_from_yo()
1940         assert_eq!(yo_opt(2014, 366), None);  in test_date_from_yo()