diff --git a/aircox/tests/old.py b/aircox/tests/old.py
deleted file mode 100755
index fd8531d..0000000
--- a/aircox/tests/old.py
+++ /dev/null
@@ -1,66 +0,0 @@
-import calendar
-import datetime
-import logging
-
-from dateutil.relativedelta import relativedelta
-from django.test import TestCase
-from django.utils import timezone as tz
-
-from aircox.models import Schedule
-
-logger = logging.getLogger("aircox.test")
-logger.setLevel("INFO")
-
-
-class ScheduleCheck(TestCase):
-    def setUp(self):
-        self.schedules = [
-            Schedule(
-                date=tz.now(),
-                duration=datetime.time(1, 30),
-                frequency=frequency,
-            )
-            for frequency in Schedule.Frequency.__members__.values()
-        ]
-
-    def test_frequencies(self):
-        for schedule in self.schedules:
-            logger.info(
-                "- test frequency %s" % schedule.get_frequency_display()
-            )
-            date = schedule.date
-            count = 24
-            while count:
-                logger.info(
-                    "- month %(month)s/%(year)s"
-                    % {"month": date.month, "year": date.year}
-                )
-                count -= 1
-                dates = schedule.dates_of_month(date)
-                if schedule.frequency == schedule.Frequency.one_on_two:
-                    self.check_one_on_two(schedule, date, dates)
-                elif schedule.frequency == schedule.Frequency.last:
-                    self.check_last(schedule, date, dates)
-                else:
-                    pass
-                date += relativedelta(months=1)
-
-    def check_one_on_two(self, schedule, date, dates):
-        for date in dates:
-            delta = date.date() - schedule.date.date()
-            self.assertEqual(delta.days % 14, 0)
-
-    def check_last(self, schedule, date, dates):
-        month_info = calendar.monthrange(date.year, date.month)
-        date = datetime.date(date.year, date.month, month_info[1])
-
-        # end of month before the wanted weekday: move one week back
-        if date.weekday() < schedule.date.weekday():
-            date -= datetime.timedelta(days=7)
-
-        date -= datetime.timedelta(days=date.weekday())
-        date += datetime.timedelta(days=schedule.date.weekday())
-        self.assertEqual(date, dates[0].date())
-
-    def check_n_of_week(self, schedule, date, dates):
-        pass