Fixing missing parentheses in method day_of_year (#89)

* Fixing missing parentheses in method day_of_year

* Adding a simple unit test for day_of_year (leap or not)

* Adding a simple unit test for day_of_year (leap or not)

* Moving tests to the right place and using last day of year

Author: asrenzo

pendulum/date.py

@@ -137,11 +137,11 @@ def day_of_year(self):
 
         :rtype: int
         """
-        k = 1 if self.is_leap_year else 2
+        k = 1 if self.is_leap_year() else 2
 
         return (
             (275 * self.month) // 9
-            - k * (self.month + 9) // 12
+            - k * ((self.month + 9) // 12)
             + self.day - 30
         )
 

tests/date_tests/test_getters.py

@@ -25,8 +25,10 @@ def test_day_of_week(self):
         self.assertEqual(pendulum.MONDAY, d.day_of_week)
 
     def test_day_of_year(self):
-        d = Date(2012, 5, 7)
-        self.assertEqual(128, d.day_of_year)
+        d = Date(2015, 12, 31)
+        self.assertEqual(365, d.day_of_year)
+        d = Date(2016, 12, 31)
+        self.assertEqual(366, d.day_of_year)
 
     def test_days_in_month(self):
         d = Date(2012, 5, 7)