add some tests

tests/test_converter.py

@@ -0,0 +1,36 @@
+import unittest
+from gcal_sync import CalendarConverter
+
+ics_empty = """BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//test//test//ES
+CALSCALE:GREGORIAN
+METHOD:PUBLISH
+END:VCALENDAR
+"""
+
+ics_empty_event = """BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//test//test//ES
+CALSCALE:GREGORIAN
+METHOD:PUBLISH
+BEGIN:VEVENT
+END:VEVENT
+END:VCALENDAR
+"""
+
+class TestCalendarConverter(unittest.TestCase):
+    def test_empty_calendar(self):
+      converter = CalendarConverter()
+      converter.loads(ics_empty)
+      evnts = converter.events_to_gcal()
+      self.assertEqual(len(evnts), 0)
+    
+    def test_empty_event(self):
+      converter = CalendarConverter()
+      converter.loads(ics_empty_event)
+      with self.assertRaises(KeyError):
+        converter.events_to_gcal()
+
+if __name__ == '__main__':
+    unittest.main()