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# -*- coding: utf-8 -*-
# Most of this code is ported from Fourmilab's javascript calendar converter
# http://www.fourmilab.ch/documents/calendar/
# which was developed by John Walker
#
# The algorithms are believed to be derived from the following source:
# Meeus, Jean. Astronomical Algorithms . Richmond: Willmann-Bell, 1991. ISBN 0-943396-35-2.
# The essential reference for computational positional astronomy.
#
import unittest
JDCS = range(2159677, 2488395, 2000)
class CalTestCase(unittest.TestCase):
def reflexive(self, module, dates=None):
"""Check that the to_func and from_func work for a range of Julian dates."""
to_func = getattr(module, 'to_jd')
from_func = getattr(module, 'from_jd')
dates = dates or JDCS
for j in dates:
j = j + 0.5
self.assertEqual(j, to_func(*from_func(j)), 'checking from_jd(to_jd({0}))'.format(j))
def assertSequenceType(self, seq, cls):
'''Assert that all members of `seq` are of the type `cls`.'''
for x in seq:
self.assertIs(type(x), cls)
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