Add third week meetings schedule

The openstacksdks team meets on the
third thursday of each month. We could
use a a monthly third-week option.

Signed-off-by: Goutham Pacha Ravi <gouthampravi@gmail.com>
Change-Id: I9eee4582506274a18e7146f6c241cf56fb585075

README.rst

@@ -171,6 +171,14 @@ yaml2ical supports a number of possible frequency options:
   * ``first-thursday``: On the first Thursday of the month.
   * ``first-friday``: On the first Friday of the month.
 
+* Event occurs in the third week of a month:
+
+  * ``third-monday``: On the third Monday of the month.
+  * ``third-tuesday``: On the third Tuesday of the month.
+  * ``third-wednesday``: On the third Wednesday of the month.
+  * ``third-thursday``: On the third Thursday of the month.
+  * ``third-friday``: On the third Friday of the month.
+
 * Event doesn't happen on a defined schedule but is used as a placeholder for
   html generation:
 

yaml2ical/meeting.py

@@ -153,6 +153,11 @@ class Schedule(object):
                 'first-wednesday': set([0, 1, 2, 3]),
                 'first-thursday': set([0, 1, 2, 3]),
                 'first-friday': set([0, 1, 2, 3]),
+                'third-monday': set([0, 1, 2, 3]),
+                'third-tuesday': set([0, 1, 2, 3]),
+                'third-wednesday': set([0, 1, 2, 3]),
+                'third-thursday': set([0, 1, 2, 3]),
+                'third-friday': set([0, 1, 2, 3]),
             }
 
             return len(week[self.freq].intersection(week[other.freq])) > 0

yaml2ical/recurrence.py

@@ -254,4 +254,9 @@ supported_recurrences = {
     'first-wednesday': MonthlyRecurrence(week=1, day='Wednesday'),
     'first-thursday': MonthlyRecurrence(week=1, day='Thursday'),
     'first-friday': MonthlyRecurrence(week=1, day='Friday'),
+    'third-monday': MonthlyRecurrence(week=3, day='Monday'),
+    'third-tuesday': MonthlyRecurrence(week=3, day='Tuesday'),
+    'third-wednesday': MonthlyRecurrence(week=3, day='Wednesday'),
+    'third-thursday': MonthlyRecurrence(week=3, day='Thursday'),
+    'third-friday': MonthlyRecurrence(week=3, day='Friday'),
 }

yaml2ical/tests/sample_data.py

@@ -446,3 +446,73 @@ chair: John Doe
 description:  >
   Example Monthly meeting
 """
+
+THIRD_MONDAY_MEETING = """
+project: OpenStack Random Meeting
+agenda_url: http://agenda.com/
+project_url: http://project.com
+schedule:
+  - time: '2200'
+    day: Monday
+    irc: openstack-meeting
+    frequency: third-monday
+chair: John Doe
+description:  >
+  Example Monthly meeting
+"""
+
+THIRD_TUESDAY_MEETING = """
+project: OpenStack Random Meeting
+agenda_url: http://agenda.com/
+project_url: http://project.com
+schedule:
+  - time: '2200'
+    day: Tuesday
+    irc: openstack-meeting
+    frequency: third-tuesday
+chair: John Doe
+description:  >
+  Example Monthly meeting
+"""
+
+THIRD_WEDNESDAY_MEETING = """
+project: OpenStack Random Meeting
+agenda_url: http://agenda.com/
+project_url: http://project.com
+schedule:
+  - time: '2200'
+    day: Wednesday
+    irc: openstack-meeting
+    frequency: third-wednesday
+chair: John Doe
+description:  >
+  Example Monthly meeting
+"""
+
+THIRD_THURSDAY_MEETING = """
+project: OpenStack Random Meeting
+agenda_url: http://agenda.com/
+project_url: http://project.com
+schedule:
+  - time: '2200'
+    day: Thursday
+    irc: openstack-meeting
+    frequency: third-thursday
+chair: John Doe
+description:  >
+  Example Monthly meeting
+"""
+
+THIRD_FRIDAY_MEETING = """
+project: OpenStack Random Meeting
+agenda_url: http://agenda.com/
+project_url: http://project.com
+schedule:
+  - time: '2200'
+    day: Friday
+    irc: openstack-meeting
+    frequency: third-friday
+chair: John Doe
+description:  >
+  Example Monthly meeting
+"""

yaml2ical/tests/test_recurrence.py

@@ -98,6 +98,13 @@ class RecurrenceTestCase(unittest.TestCase):
             self.next_meeting(rec),
         )
 
+    def test_monthly_third_week(self):
+        rec = recurrence.MonthlyRecurrence(week=3, day='Thursday')
+        self.assertEqual(
+            datetime.datetime(2014, 11, 19, 2, 47, 28, 832666),
+            self.next_meeting(rec),
+        )
+
     def test_monthly_invalid_week(self):
         rec = recurrence.MonthlyRecurrence(week=6, day='Wednesday')
         self.assertRaises(