test_mputils.py
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#! /usr/bin/env python
# ==========================================================================
# This scripts performs unit tests for the mputils module
#
# Copyright (C) 2018 Juergen Knoedlseder
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# ==========================================================================
import gammalib
import ctools
from cscripts import mputils
from testing import test
# ================== #
# mputils test class #
# ================== #
class mputils_test(ctools.cscript):
"""
Test class for the mputils module
"""
# Constructor
def __init__(self, *argv):
"""
Constructor
"""
# Initialise application by calling the base class constructor
self._init_cscript(self.__class__.__name__, ctools.__version__, argv)
# Return
return
# Bin computation
def _compute_bin(self, i):
"""
Bin computation
"""
# Return bin index
return i
# ============================= #
# Test class for mputils module #
# ============================= #
class Test(test):
"""
Test class for mputils module
"""
# Constructor
def __init__(self):
"""
Constructor
"""
# Call base class constructor
test.__init__(self)
# Create parameter file for mputils_test application
pars = gammalib.GApplicationPars()
pars.append_standard()
pars.save('mputils_test.par')
# Return
return
# Set test functions
def set(self):
"""
Set all test functions
"""
# Set test name
self.name('mputils')
# Append tests
self.append(self._test_nthreads, 'Test mputils.nthreads() function')
self.append(self._test_process, 'Test mputils.process() function')
self.append(self._test_mpfunc, 'Test mputils.mpfunc() function')
# Return
return
# Setup mputils test class
def _setup_mputils_test(self):
"""
Setup mputils test class
"""
# Get test class
cls = mputils_test()
# Recover User parameters
pars = cls.pars()
# Create a copy of the User parameters
cpy_pars = pars.copy()
# Return
return (cls, pars, cpy_pars)
# Test nthreads() function
def _test_nthreads(self):
"""
Test nthreads() function
"""
# Set reference number of CPU's
n0 = 1
n739 = 1
try:
from multiprocessing import cpu_count
n0 = cpu_count()
n739 = 739
except:
pass
# Check nthreads=0. In this case the nthreads() function should return
# the number of CPU's that are available, provided that the
# multiprocessing module is available. If the module is not available
# the function returns 1.
cls, pars, cpy_pars = self._setup_mputils_test()
pars.append(gammalib.GApplicationPar('nthreads','i','h','0','','',''))
nthreads = mputils.nthreads(cls)
self.test_value(nthreads, n0, 'Check nthreads=0')
cls.pars(cpy_pars)
# Check nthreads=739. In this case the nthreads() function should
# return 739, provided that the multiprocessing module is available.
# If the module is not available the function returns 1.
cls, pars, cpy_pars = self._setup_mputils_test()
pars.append(gammalib.GApplicationPar('nthreads','i','h','739','','',''))
nthreads = mputils.nthreads(cls)
self.test_value(nthreads, n739, 'Check nthreads=739')
cls.pars(cpy_pars)
# Return
return
# Test process() function
def _test_process(self):
"""
Test process() function
"""
# Test only if Pool module is available
try:
# Import Pool module
from multiprocessing import Pool
# Get test class
cls = mputils_test()
# Setup arguments for mpfunc() computation
args = [(cls, '_compute_bin', i) for i in range(10)]
# Multiprocessing
poolresults = mputils.process(2, mputils.mpfunc, args)
# Loop over arguments
for i in range(10):
result = poolresults[i][0]
self.test_value(result, i, 'Check process for argument %d' % i)
# ... otherwise if Pool is not available then skip this test
except:
pass
# Return
return
# Test mpfunc() function
def _test_mpfunc(self):
"""
Test mpfunc() function
"""
# Get test class
cls = mputils_test()
# Setup arguments for mpfunc() computation
args = [(cls, '_compute_bin', i) for i in range(10)]
# Loop over arguments
for arg in args:
result, _ = mputils.mpfunc(arg)
self.test_value(result, arg[2], 'Check mpfunc for argument %d' % arg[2])
# Return
return