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import tempfile
import cf
import os
import unittest
import atexit
import numpy
import inspect
tmpfile = tempfile.mktemp('.cf-python_test')
tmpfiles = [tmpfile]
def _remove_tmpfiles():
'''
'''
for f in tmpfiles:
try:
os.remove(f)
except OSError:
pass
#--- End: def
atexit.register(_remove_tmpfiles)
class read_writeTest(unittest.TestCase):
filename = os.path.join(os.path.dirname(os.path.abspath(__file__)),
'test_file.nc')
chunk_sizes = (17, 34, 300, 100000)[::-1]
original_chunksize = cf.CHUNKSIZE()
test_only = []
# test_only = ['NOTHING!!!!!']
# test_only = ['test_write_reference_datetime']
# test_only = ['test_write_HDF_chunks']
test_only = ['test_read_write_unlimited']
def test_read_select(self):
if self.test_only and inspect.stack()[0][3] not in self.test_only:
return
# select on field list
f = cf.read(self.filename, select='eastward_wind')
g = cf.read(self.filename)
self.assertTrue(f.equals(g, traceback=True),
'Bad read with select keyword')
#--- End: def
def test_read_top_level(self):
if self.test_only and inspect.stack()[0][3] not in self.test_only:
return
# Test top_level keyword of cf.read
filename = self.filename
self.assertTrue(len(cf.read(filename)) == 1)
self.assertTrue(len(cf.read(filename, top_level=['dimension'])) == 6)
self.assertTrue(len(cf.read(filename, top_level=['auxiliary'])) == 11)
self.assertTrue(len(cf.read(filename, top_level='measure')) == 4)
self.assertTrue(len(cf.read(filename, top_level=['ancillary'])) == 5)
self.assertTrue(len(cf.read(filename, top_level='reference')) == 2)
self.assertTrue(len(cf.read(filename, top_level='field')) == 6)
self.assertTrue(len(cf.read(filename, top_level=['ancillary', 'auxiliary'])) == 15)
self.assertTrue(len(cf.read(filename, top_level=['reference', 'auxiliary'])) == 12)
self.assertTrue(len(cf.read(filename, top_level=['field', 'auxiliary'])) == 16)
self.assertTrue(len(cf.read(filename, top_level=['field', 'measure', 'auxiliary'])) == 19)
self.assertTrue(len(cf.read(filename, top_level='coordinate')) == 16)
self.assertTrue(len(cf.read(filename, top_level='all')) == 24)
self.assertTrue(len(cf.read(filename, top_level=('field', 'measure', 'coordinate'))) == 24)
#--- End: def
def test_read_write_format(self):
if self.test_only and inspect.stack()[0][3] not in self.test_only:
return
for chunksize in self.chunk_sizes:
cf.CHUNKSIZE(chunksize)
f = cf.read(self.filename)[0]
for fmt in ('NETCDF3_CLASSIC',
'NETCDF3_64BIT',
'NETCDF4',
'NETCDF4_CLASSIC',
'CFA3',
'CFA4'):
cf.write(f, tmpfile, fmt=fmt)
g = cf.read(tmpfile)[0]
self.assertTrue(f.equals(g, traceback=True),
'Bad read/write of format: {0}'.format(fmt))
#--- End: for
#--- End: def
def test_read_write_netCDF4_compress_shuffle(self):
if self.test_only and inspect.stack()[0][3] not in self.test_only:
return
for chunksize in self.chunk_sizes:
cf.CHUNKSIZE(chunksize)
f = cf.read(self.filename)[0]
for fmt in ('NETCDF4',
'NETCDF4_CLASSIC',
'CFA4'):
for no_shuffle in (True, False):
for compress in range(10):
cf.write(f, tmpfile, fmt=fmt,
compress=compress,
no_shuffle=no_shuffle)
g = cf.read(tmpfile)[0]
self.assertTrue(
f.equals(g, traceback=True),
'Bad read/write with lossless compression: {0}, {1}, {2}'.format(fmt, compress, no_shuffle))
#--- End: for
cf.CHUNKSIZE(self.original_chunksize)
#--- End: def
def test_write_datatype(self):
if self.test_only and inspect.stack()[0][3] not in self.test_only:
return
for chunksize in self.chunk_sizes:
cf.CHUNKSIZE(chunksize)
f = cf.read(self.filename)[0]
self.assertTrue(f.dtype == numpy.dtype(float))
cf.write(f, tmpfile, fmt='NETCDF4',
datatype={numpy.dtype(float): numpy.dtype('float32')})
g = cf.read(tmpfile)
self.assertTrue(g.dtype == numpy.dtype('float32'),
'datatype read in is '+str(g.dtype))
#--- End: for
cf.CHUNKSIZE(self.original_chunksize)
#--- End: def
def test_write_reference_datetime(self):
if self.test_only and inspect.stack()[0][3] not in self.test_only:
return
for reference_datetime in ('1751-2-3', '1492-12-30'):
for chunksize in self.chunk_sizes:
cf.CHUNKSIZE(chunksize)
f = cf.read(self.filename)[0]
t = cf.DimensionCoordinate(data=cf.Data(123, 'days since 1750-1-1'))
t.standard_name = 'time'
dim = f.insert_axis(1)
f.insert_dim(t, key=dim)
cf.write(f, tmpfile, fmt='NETCDF4', reference_datetime=reference_datetime)
g = cf.read(tmpfile)
t = g.dim('T')
self.assertTrue(t.Units == cf.Units('days since '+reference_datetime),
'Units written were '+repr(t.Units.reftime)+' not '+repr(reference_datetime))
#--- End: for
cf.CHUNKSIZE(self.original_chunksize)
#--- End: def
def test_write_HDF_chunks(self):
if self.test_only and inspect.stack()[0][3] not in self.test_only:
return
for chunksize in self.chunk_sizes:
for fmt in ('NETCDF3_CLASSIC', 'NETCDF4'):
cf.CHUNKSIZE(chunksize)
f = cf.read(self.filename)[0]
f.HDF_chunks({'T': 10000, 1: 3, 'grid_lat': 222, 45:45})
cf.write(f, tmpfile, fmt=fmt, HDF_chunksizes={'X': 6})
#--- End: for
cf.CHUNKSIZE(self.original_chunksize)
#--- End: def
def test_read_write_unlimited(self):
if self.test_only and inspect.stack()[0][3] not in self.test_only:
return
f = cf.read(self.filename)[0]
fmt = 'NETCDF4'
for axis in ('atmosphere_hybrid_height_coordinate', 'X', 'Y'):
org = f.unlimited({axis: True})
cf.write(f, tmpfile, fmt=fmt)
f.unlimited(org)
g = cf.read(tmpfile)
self.assertTrue(g.unlimited()[g.axis(axis)] is True,
'Failed with axis={}, fmt={}'.format(axis, fmt))
fmt = 'NETCDF3_CLASSIC'
for axis in ('atmosphere_hybrid_height_coordinate',):
org = f.unlimited({axis: True})
cf.write(f, tmpfile, fmt=fmt)
f.unlimited(org)
g = cf.read(tmpfile)
self.assertTrue(g.unlimited()[g.axis(axis)] is True,
'Failed with axis={}, fmt={}'.format(axis, fmt))
fmt = 'NETCDF4'
org = f.unlimited({'Y': True, 'X': True})
cf.write(f, tmpfile, fmt=fmt)
f.unlimited(org)
g = cf.read(tmpfile)
self.assertTrue(g.unlimited()[g.axis('X')] is True,
'Failed with axis={}, fmt={}'.format('X', fmt))
self.assertTrue(g.unlimited()[g.axis('Y')] is True,
'Failed with axis={}, fmt={}'.format('Y', fmt))
fmt = 'NETCDF4'
org = f.unlimited({'X': False})
cf.write(f, tmpfile, fmt=fmt, unlimited=['X'])
f.unlimited(org)
g = cf.read(tmpfile)
self.assertTrue(not g.unlimited()[g.axis('X')],
'Failed with axis={}, fmt={}'.format('X', fmt))
fmt = 'NETCDF4'
org = f.unlimited({'X': True})
cf.write(f, tmpfile, fmt=fmt, unlimited=['X'])
f.unlimited(org)
g = cf.read(tmpfile)
self.assertTrue(g.unlimited()[g.axis('X')] is True,
'Failed with axis={}, fmt={}'.format('X', fmt))
fmt = 'NETCDF4'
org = f.unlimited({'Y': True})
cf.write(f, tmpfile, fmt=fmt, unlimited=['X'])
f.unlimited(org)
g = cf.read(tmpfile)
self.assertTrue(g.unlimited()[g.axis('X')] is True,
'Failed with axis={}, fmt={}'.format('X', fmt))
self.assertTrue(g.unlimited()[g.axis('Y')] is True,
'Failed with axis={}, fmt={}'.format('Y', fmt))
fmt = 'NETCDF4'
org = f.unlimited({('X', 'Y'): True})
cf.write(f, tmpfile, fmt=fmt)
f.unlimited(org)
g = cf.read(tmpfile)
self.assertTrue(g.unlimited()[g.axis('X')] is True,
'Failed with axis={}, fmt={}'.format('X', fmt))
self.assertTrue(g.unlimited()[g.axis('Y')] is True,
'Failed with axis={}, fmt={}'.format('Y', fmt))
fmt = 'NETCDF4'
org = f.unlimited({('X', 'Y'): True})
f.unlimited(None)
cf.write(f, tmpfile, fmt=fmt)
f.unlimited(org)
g = cf.read(tmpfile)
self.assertTrue(not g.unlimited()[g.axis('X')],
'Failed with axis={}, fmt={}'.format('X', fmt))
self.assertTrue(not g.unlimited()[g.axis('Y')],
'Failed with axis={}, fmt={}'.format('Y', fmt))
#--- 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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