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# pylint: disable-msg=W0611, W0612, W0511,R0201
"""Tests suite for mrecarray.
:author: Pierre Gerard-Marchant
:contact: pierregm_at_uga_dot_edu
:version: $Id: test_mrecords.py 3243 2007-08-15 05:44:07Z pierregm $
"""
__author__ = "Pierre GF Gerard-Marchant ($Author: pierregm $)"
__version__ = '1.0'
__revision__ = "$Revision: 3243 $"
__date__ = '$Date: 2007-08-14 22:44:07 -0700 (Tue, 14 Aug 2007) $'
import types
import numpy as N
import numpy.core.fromnumeric as fromnumeric
from numpy.testing import NumpyTest, NumpyTestCase
from numpy.testing.utils import build_err_msg
import maskedarray.testutils
from maskedarray.testutils import *
import maskedarray.core as MA
#import maskedarray.mrecords
#from maskedarray.mrecords import mrecarray, fromarrays, fromtextfile, fromrecords
import maskedarray.mrecords
from maskedarray.mrecords import MaskedRecords, \
fromarrays, fromtextfile, fromrecords, addfield
#..............................................................................
class test_mrecords(NumpyTestCase):
"Base test class for MaskedArrays."
def __init__(self, *args, **kwds):
NumpyTestCase.__init__(self, *args, **kwds)
self.setup()
def setup(self):
"Generic setup"
d = N.arange(5)
m = MA.make_mask([1,0,0,1,1])
base_d = N.r_[d,d[::-1]].reshape(2,-1).T
base_m = N.r_[[m, m[::-1]]].T
base = MA.array(base_d, mask=base_m)
mrecord = fromarrays(base.T, dtype=[('a',N.float_),('b',N.float_)])
self.data = [d, m, mrecord]
def test_get(self):
"Tests fields retrieval"
[d, m, mrec] = self.data
mrec = mrec.copy()
assert_equal(mrec.a, MA.array(d,mask=m))
assert_equal(mrec.b, MA.array(d[::-1],mask=m[::-1]))
assert((mrec._fieldmask == N.core.records.fromarrays([m, m[::-1]], dtype=mrec._fieldmask.dtype)).all())
assert_equal(mrec._mask, N.r_[[m,m[::-1]]].all(0))
assert_equal(mrec.a[1], mrec[1].a)
#
assert(isinstance(mrec[:2], MaskedRecords))
assert_equal(mrec[:2]['a'], d[:2])
def test_set(self):
"Tests setting fields/attributes."
[d, m, mrecord] = self.data
mrecord.a._data[:] = 5
assert_equal(mrecord['a']._data, [5,5,5,5,5])
mrecord.a = 1
assert_equal(mrecord['a']._data, [1]*5)
assert_equal(getmaskarray(mrecord['a']), [0]*5)
mrecord.b = MA.masked
assert_equal(mrecord.b.mask, [1]*5)
assert_equal(getmaskarray(mrecord['b']), [1]*5)
mrecord._mask = MA.masked
assert_equal(getmaskarray(mrecord['b']), [1]*5)
assert_equal(mrecord['a']._mask, mrecord['b']._mask)
mrecord._mask = MA.nomask
assert_equal(getmaskarray(mrecord['b']), [0]*5)
assert_equal(mrecord['a']._mask, mrecord['b']._mask)
#
def test_setfields(self):
"Tests setting fields."
[d, m, mrecord] = self.data
mrecord.a[3:] = 5
assert_equal(mrecord.a, [0,1,2,5,5])
assert_equal(mrecord.a._mask, [1,0,0,0,0])
#
mrecord.b[3:] = masked
assert_equal(mrecord.b, [4,3,2,1,0])
assert_equal(mrecord.b._mask, [1,1,0,1,1])
def test_setslices(self):
"Tests setting slices."
[d, m, mrec] = self.data
mrec[:2] = 5
assert_equal(mrec.a._data, [5,5,2,3,4])
assert_equal(mrec.b._data, [5,5,2,1,0])
assert_equal(mrec.a._mask, [0,0,0,1,1])
assert_equal(mrec.b._mask, [0,0,0,0,1])
#
mrec[:2] = masked
assert_equal(mrec._mask, [1,1,0,0,1])
mrec[-2] = masked
assert_equal(mrec._mask, [1,1,0,1,1])
#
def test_setslices_hardmask(self):
"Tests setting slices w/ hardmask."
[d, m, mrec] = self.data
mrec.harden_mask()
mrec[-2:] = 5
assert_equal(mrec.a._data, [0,1,2,3,4])
assert_equal(mrec.b._data, [4,3,2,5,0])
assert_equal(mrec.a._mask, [1,0,0,1,1])
assert_equal(mrec.b._mask, [1,1,0,0,1])
def test_hardmask(self):
"Test hardmask"
[d, m, mrec] = self.data
mrec = mrec.copy()
mrec.harden_mask()
assert(mrec._hardmask)
mrec._mask = nomask
assert_equal(mrec._mask, N.r_[[m,m[::-1]]].all(0))
mrec.soften_mask()
assert(not mrec._hardmask)
mrec._mask = nomask
assert(mrec['b']._mask is nomask)
assert_equal(mrec['a']._mask,mrec['b']._mask)
def test_fromrecords(self):
"Test from recarray."
[d, m, mrec] = self.data
nrec = N.core.records.fromarrays(N.r_[[d,d[::-1]]],
dtype=[('a',N.float_),('b',N.float_)])
#....................
mrecfr = fromrecords(nrec)
assert_equal(mrecfr.a, mrec.a)
assert_equal(mrecfr.dtype, mrec.dtype)
#....................
tmp = mrec[::-1] #.tolist()
mrecfr = fromrecords(tmp)
assert_equal(mrecfr.a, mrec.a[::-1])
#....................
mrecfr = fromrecords(nrec.tolist(), names=nrec.dtype.names)
assert_equal(mrecfr.a, mrec.a)
assert_equal(mrecfr.dtype, mrec.dtype)
def test_fromtextfile(self):
"Tests reading from a text file."
fcontent = """#
'One (S)','Two (I)','Three (F)','Four (M)','Five (-)','Six (C)'
'strings',1,1.0,'mixed column',,1
'with embedded "double quotes"',2,2.0,1.0,,1
'strings',3,3.0E5,3,,1
'strings',4,-1e-10,,,1
"""
import os
from datetime import datetime
fname = 'tmp%s' % datetime.now().strftime("%y%m%d%H%M%S%s")
f = open(fname, 'w')
f.write(fcontent)
f.close()
mrectxt = fromtextfile(fname,delimitor=',',varnames='ABCDEFG')
os.unlink(fname)
#
assert(isinstance(mrectxt, MaskedRecords))
assert_equal(mrectxt.F, [1,1,1,1])
assert_equal(mrectxt.E._mask, [1,1,1,1])
assert_equal(mrectxt.C, [1,2,3.e+5,-1e-10])
def test_addfield(self):
"Tests addfield"
[d, m, mrec] = self.data
mrec = addfield(mrec, masked_array(d+10, mask=m[::-1]))
assert_equal(mrec.f2, d+10)
assert_equal(mrec.f2._mask, m[::-1])
###############################################################################
#------------------------------------------------------------------------------
if __name__ == "__main__":
NumpyTest().run()
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