test_ctexpcube.py
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#! /usr/bin/env python
# ==========================================================================
# This scripts performs unit tests for the ctexpcube tool.
#
# Copyright (C) 2014-2018 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 os
import gammalib
import ctools
from testing import test
# ============================= #
# Test class for ctexpcube tool #
# ============================= #
class Test(test):
"""
Test class for ctexpcube tool
"""
# Constructor
def __init__(self):
"""
Constructor
"""
# Call base class constructor
test.__init__(self)
# Return
return
# Set test functions
def set(self):
"""
Set all test functions
"""
# Set test name
self.name('ctexpcube')
# Append tests
self.append(self._test_cmd, 'Test ctexpcube on command line')
self.append(self._test_python, 'Test ctexpcube from Python')
# Return
return
# Test ctexpcube on command line
def _test_cmd(self):
"""
Test ctexpcube on the command line
"""
# Set tool name
ctexpcube = self._tool('ctexpcube')
# Setup ctexpcube command
cmd = ctexpcube+' inobs="'+self._events+'"'+ \
' incube="NONE"'+ \
' outcube="ctexpcube_cmd1.fits"'+ \
' caldb="'+self._caldb+'" irf="'+self._irf+'"'+ \
' ebinalg="LOG" emin=1.0 emax=100.0 enumbins=5'+ \
' nxpix=20 nypix=20 binsz=0.2'+ \
' coordsys="CEL" proj="CAR" xref=83.63 yref=22.01'+ \
' logfile="ctexpcube_cmd1.log" chatter=1'
# Check if execution was successful
self.test_assert(self._execute(cmd) == 0,
'Check successful execution from command line')
# Check result file
self._check_result_file('ctexpcube_cmd1.fits')
# Setup ctexpcube command
cmd = ctexpcube+' inobs="event_file_that_does_not_exist.fits"'+ \
' incube="NONE"'+ \
' outcube="ctexpcube_cmd2.fits"'+ \
' caldb="'+self._caldb+'" irf="'+self._irf+'"'+ \
' ebinalg="LOG" emin=1.0 emax=100.0 enumbins=5'+ \
' nxpix=20 nypix=20 binsz=0.2'+ \
' coordsys="CEL" proj="CAR" xref=83.63 yref=22.01'+ \
' logfile="ctexpcube_cmd2.log" debug=yes chatter=1'
# Check if execution failed
self.test_assert(self._execute(cmd, success=False) != 0,
'Check invalid input file when executed from command line')
# Check ctexpcube --help
self._check_help(ctexpcube)
# Return
return
# Test ctexpcube from Python
def _test_python(self):
"""
Test ctexpcube from Python
"""
# Allocate ctexpcube
expcube = ctools.ctexpcube()
# Check that empty ctexpcube tool holds an exposure cube that has
# no energy bins
self._check_cube(expcube.expcube(), nenergies=0)
# Check that saving does not nothing
expcube['outcube'] = 'ctexpcube_py0.fits'
expcube['logfile'] = 'ctexpcube_py0.log'
expcube.logFileOpen()
expcube.save()
self.test_assert(not os.path.isfile('ctexpcube_py0.fits'),
'Check that no exposure cube has been created')
# Check that clearing does not lead to an exception or segfault
expcube.clear()
# Now set ctexpcube parameters
expcube['inobs'] = self._events
expcube['incube'] = 'NONE'
expcube['caldb'] = self._caldb
expcube['irf'] = self._irf
expcube['ebinalg'] = 'LOG'
expcube['emin'] = 1.0
expcube['emax'] = 100.0
expcube['enumbins'] = 5
expcube['nxpix'] = 20
expcube['nypix'] = 20
expcube['binsz'] = 0.2
expcube['coordsys'] = 'CEL'
expcube['proj'] = 'CAR'
expcube['xref'] = 83.63
expcube['yref'] = 22.01
expcube['logfile'] = 'ctexpcube_py1.log'
expcube['outcube'] = 'ctexpcube_py1.fits'
expcube['chatter'] = 2
# Run ctexpcube tool
expcube.logFileOpen() # Make sure we get a log file
expcube.run()
expcube.save()
# Check result file
self._check_result_file('ctexpcube_py1.fits')
# Copy ctexpcube tool
cpy_expcube = expcube.copy()
# Check exposure cube of ctexpcube copy
self._check_cube(cpy_expcube.expcube())
# Execute copy of ctexpcube tool again, now with a higher chatter
# level than before
cpy_expcube['emin'] = 0.2
cpy_expcube['emax'] = 150.0
cpy_expcube['outcube'] = 'ctexpcube_py2.fits'
cpy_expcube['logfile'] = 'ctexpcube_py2.log'
cpy_expcube['publish'] = True
cpy_expcube['addbounds'] = True
cpy_expcube['chatter'] = 3
cpy_expcube.logFileOpen() # Needed to get a new log file
cpy_expcube.execute()
# Check result file
self._check_result_file('ctexpcube_py2.fits', nenergies=8)
# Now clear copy of ctexpcube tool
cpy_expcube.clear()
# Check that the cleared copy has also cleared the exposure cube
self._check_cube(cpy_expcube.expcube(), nenergies=0)
# Get mixed observation container
obs = self._obs_mixed()
# Set-up ctexpcube from observation container
expcube = ctools.ctexpcube(obs)
expcube['incube'] = 'NONE'
expcube['caldb'] = self._caldb
expcube['irf'] = self._irf
expcube['ebinalg'] = 'LOG'
expcube['emin'] = 1.0
expcube['emax'] = 100.0
expcube['enumbins'] = 5
expcube['nxpix'] = 20
expcube['nypix'] = 20
expcube['binsz'] = 0.2
expcube['coordsys'] = 'CEL'
expcube['proj'] = 'CAR'
expcube['xref'] = 83.63
expcube['yref'] = 22.01
expcube['logfile'] = 'ctexpcube_py3.log'
expcube['outcube'] = 'ctexpcube_py3.fits'
expcube['chatter'] = 4
# Execute ctexpcube tool
expcube.logFileOpen() # Needed to get a new log file
expcube.execute()
# Check result file
self._check_result_file('ctexpcube_py3.fits')
# Set-up ctexpcube from event list and counts cube
expcube = ctools.ctexpcube()
expcube['inobs'] = self._events
expcube['incube'] = self._cntcube
expcube['caldb'] = self._caldb
expcube['irf'] = self._irf
expcube['logfile'] = 'ctexpcube_py4.log'
expcube['outcube'] = 'ctexpcube_py4.fits'
expcube['chatter'] = 2
# Execute ctexpcube tool
expcube.logFileOpen() # Needed to get a new log file
expcube.execute()
# Check result file
self._check_result_file('ctexpcube_py4.fits')
# Return
return
# Check result file
def _check_result_file(self, filename, nenergies=6):
"""
Check result file
Parameters
----------
filename : str
Exposure cube file name
nenergies : int, optional
Number of energy bins
"""
# Open exposure cube
cube = gammalib.GCTACubeExposure(filename)
# Check cube
self._check_cube(cube, nenergies=nenergies)
# Return
return
# Check exposure cube
def _check_cube(self, cube, nenergies=6):
"""
Check exposure cube
Parameters
----------
cube : `~gammalib.GCTACubeExposure`
Exposure cube
nenergies : int, optional
Number of energy bins
"""
# Check dimensions
self.test_value(len(cube.energies()), nenergies,
'Check number of energy maps')
# Return
return