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import cf
import math
import os
import unittest
class UnitsTest(unittest.TestCase):
filename = os.path.join(os.path.dirname(os.path.abspath(__file__)),
'test_file.nc')
chunk_sizes = (17, 34, 300, 100000)[::-1]
def test_Units___eq__(self):
self.assertTrue(cf.Units('')==cf.Units(''))
self.assertTrue(cf.Units('18')==cf.Units('18'))
self.assertTrue(cf.Units('1')==cf.Units('1'))
self.assertTrue(cf.Units('m')==cf.Units('m'))
self.assertTrue(cf.Units('m')==cf.Units('metres'))
self.assertTrue(cf.Units('m')==cf.Units('meTRES'))
self.assertTrue(cf.Units('days since 2000-1-1')==cf.Units('d since 2000-1-1 0:0'))
self.assertTrue(cf.Units('days since 2000-1-1')!=cf.Units('h since 1234-1-1 0:0'))
self.assertTrue(cf.Units('days since 2000-1-1')==cf.Units('d since 2000-1-1 0:0', calendar='gregorian'))
self.assertTrue(cf.Units('days since 2000-1-1')==cf.Units('d since 2000-1-1 0:0', calendar='standard'))
self.assertTrue(cf.Units(calendar='noleap')==cf.Units(calendar='noleap'))
self.assertTrue(cf.Units(calendar='noleap')==cf.Units(calendar='365_day'))
self.assertTrue(cf.Units(calendar='nOLEAP')==cf.Units(calendar='365_dAY'))
self.assertTrue(cf.Units('days since 2000-1-1', calendar='all_leap')==cf.Units('d since 2000-1-1 0:0', calendar='366_day'))
self.assertTrue(cf.Units('days since 2000-1-1', calendar='all_leap')!=cf.Units('h since 2000-1-1 0:0', calendar='366_day'))
#--- End: def
def test_Units_equivalent(self):
self.assertTrue(cf.Units('').equivalent(cf.Units('')))
self.assertTrue(cf.Units('').equivalent(cf.Units('1')))
self.assertTrue(cf.Units('').equivalent(cf.Units('18')))
self.assertTrue(cf.Units('18').equivalent(cf.Units('1')))
self.assertTrue(cf.Units('18').equivalent(cf.Units('18')))
self.assertTrue(cf.Units('1)').equivalent(cf.Units('1')))
self.assertTrue(cf.Units('m').equivalent(cf.Units('m')))
self.assertTrue(cf.Units('meter').equivalent(cf.Units('km')))
self.assertTrue(cf.Units('metre').equivalent(cf.Units('mile')))
self.assertTrue(cf.Units('s').equivalent(cf.Units('h')))
self.assertTrue(cf.Units('s').equivalent(cf.Units('day')))
self.assertTrue(cf.Units('second').equivalent(cf.Units('month')) )
self.assertTrue(cf.Units(calendar='noleap').equivalent(cf.Units(calendar='noleap')))
self.assertTrue(cf.Units(calendar='noleap').equivalent(cf.Units(calendar='365_day')))
self.assertTrue(cf.Units(calendar='nOLEAP').equivalent(cf.Units(calendar='365_dAY')))
self.assertTrue(cf.Units('days since 2000-1-1').equivalent(cf.Units('d since 2000-1-1 0:0')))
self.assertTrue(cf.Units('days since 2000-1-1').equivalent(cf.Units('h since 1234-1-1 0:0')))
self.assertTrue(cf.Units('days since 2000-1-1').equivalent(cf.Units('d since 2000-1-1 0:0', calendar='gregorian')))
self.assertTrue(cf.Units('days since 2000-1-1').equivalent(cf.Units('h since 1234-1-1 0:0', calendar='standard')))
self.assertTrue(cf.Units('days since 2000-1-1', calendar='all_leap').equivalent(cf.Units('d since 2000-1-1 0:0', calendar='366_day')))
self.assertTrue(cf.Units('days since 2000-1-1', calendar='all_leap').equivalent(cf.Units('h since 1234-1-1 0:0', calendar='366_day')))
#--- End: def
def test_Units_BINARY_AND_UNARY_OPERATORS(self):
self.assertTrue((cf.Units('m')*2) ==cf.Units('2m'))
self.assertTrue((cf.Units('m')/2) ==cf.Units('0.5m'))
self.assertTrue((cf.Units('m')//2) ==cf.Units('0.5m'))
self.assertTrue((cf.Units('m')+2) ==cf.Units('m @ -2'))
self.assertTrue((cf.Units('m')-2) ==cf.Units('m @ 2'))
self.assertTrue((cf.Units('m')**2) ==cf.Units('m2'))
self.assertTrue((cf.Units('m')**-2) ==cf.Units('m-2'))
self.assertTrue((cf.Units('m2')**0.5)==cf.Units('m'))
u = cf.Units('m')
v = u
u *= 2
self.assertTrue(u==cf.Units('2m'))
self.assertTrue(u!=v)
u = cf.Units('m')
v = u
u /= 2
self.assertTrue(u==cf.Units('0.5m'))
self.assertTrue(u!=v)
u = cf.Units('m')
v = u
u //= 2
self.assertTrue(u==cf.Units('0.5m'))
self.assertTrue(u!=v)
u = cf.Units('m')
v = u
u += 2
self.assertTrue(u==cf.Units('m @ -2'))
self.assertTrue(u!=v)
u = cf.Units('m')
v = u
u -= 2
self.assertTrue(u==cf.Units('m @ 2'))
self.assertTrue(u!=v)
u = cf.Units('m')
v = u
u **= 2
self.assertTrue(u==cf.Units('m2'))
self.assertTrue(u!=v)
self.assertTrue((2*cf.Units('m')) ==cf.Units('2m'))
self.assertTrue((2/cf.Units('m')) ==cf.Units('2 m-1'))
self.assertTrue((2//cf.Units('m'))==cf.Units('2 m-1'))
self.assertTrue((2+cf.Units('m')) ==cf.Units('m @ -2'))
self.assertTrue((2-cf.Units('m')) ==cf.Units('-1 m @ -2'))
self.assertTrue((cf.Units('m')*cf.Units('2m')) ==cf.Units('2 m2'))
self.assertTrue((cf.Units('m')/cf.Units('2m')) ==cf.Units('0.5'))
self.assertTrue((cf.Units('m')//cf.Units('2m'))==cf.Units('0.5'))
u = cf.Units('m')
v = u
u *= u
self.assertTrue(u==cf.Units('m2'))
self.assertTrue(u!=v)
u = cf.Units('m')
v = u
u /= u
self.assertTrue(u==cf.Units('1'))
self.assertTrue(u!=v)
u = cf.Units('m')
v = u
u //= u
self.assertTrue(u==cf.Units('1'))
self.assertTrue(u!=v)
self.assertTrue(cf.Units('m').log(10) ==cf.Units('lg(re 1 m)'))
self.assertTrue(cf.Units('m').log(2) ==cf.Units('lb(re 1 m)'))
self.assertTrue(cf.Units('m').log(math.e)==cf.Units('ln(re 1 m)'))
self.assertTrue(cf.Units('m').log(1.5) ==cf.Units('2.46630346237643 ln(re 1 m)'))
#--- End: def
#--- End: class
if __name__ == '__main__':
print 'cf-python version:', cf.__version__
print 'cf-python path:' , os.path.abspath(cf.__file__)
print ''
unittest.main(verbosity=2)
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