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//# tNewMSSimulator.cc: Tests the MS Simulator
//# Copyright (C) 1995,1999,2000,2001,2016
//# Associated Universities, Inc. Washington DC, USA.
//#
//# 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 2 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, write to the Free Software Foundation, Inc.,
//# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: casa-feedback@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
#define _POSIX_C_SOURCE 200809L //For mkdtemp(), stpcpy(), nftw()
#include <casacore/casa/aips.h>
#include <ftw.h>
#include <stdio.h>
#include <random>
#include <string>
#include <casacore/ms/MSOper/NewMSSimulator.h>
#include <casacore/ms/MeasurementSets/MeasurementSet.h>
#include <casacore/measures/Measures/MeasTable.h>
#include <casacore/casa/Exceptions/Error.h>
void test_NewMSSimulator_Constructors();
void test_NewMSSimulator_RandomAntenna();
int removeFile(const char *fpath, const struct stat *sb, int typeflag,
struct FTW* ftwbuf);
int main() {
try {
test_NewMSSimulator_Constructors();
test_NewMSSimulator_RandomAntenna();
}
catch (const std::exception& x) {
std::cerr << "Exception : " << x.what() << std::endl;
return 1;
}
std::cout<<"OK"<<std::endl;
return 0;
}
/*
* This function will be called by nftw() with a path arguments and will remove the file in the path
*/
int removeFile(const char *fpath, const struct stat *sb, int typeflag,
struct FTW* ftwbuf)
{
(void)sb; //Unused vars
(void)typeflag;
(void)ftwbuf;
int rv = remove(fpath);
if(rv)
perror(fpath);
return rv;
}
/*
* This class helps testing the NewMSSimulator class. It holds a reference
* to the simulator and the destructor will take care of deleting
* the whole MS directory generated by the simulator.
*/
class NewMSSimulatorTester
{
public:
NewMSSimulatorTester(const std::string& ms_name) :
msName_p(ms_name)
{
simulator_p.reset(new casacore::NewMSSimulator(ms_name));
}
NewMSSimulatorTester(casacore::MeasurementSet& otherMs) :
msName_p(otherMs.tableName())
{
simulator_p.reset(new casacore::NewMSSimulator(otherMs));
}
~NewMSSimulatorTester()
{
//We have to delete the underlying ms before removing the directory
simulator_p.reset(0);
//This will recursively remove everything in the MS directory
nftw(msName_p.c_str(), removeFile, 64, FTW_DEPTH | FTW_PHYS);
}
std::unique_ptr<casacore::NewMSSimulator> simulator_p;
std::string msName_p;
};
/*
* The most simple test on the simulator, just contruct it with defaults
*/
void test_NewMSSimulator_Constructors()
{
//Simple constructor
NewMSSimulatorTester simulatorTester("newsim");
//This shared pointer gets deleted before the shared pointer inside simulator_p
std::shared_ptr<casacore::MeasurementSet> ms = simulatorTester.simulator_p->getMs();
//Constructor from existing MS. Not working. Has to be copied first?
//NewMSSimulatorTester simulatorTesterFromMS(*ms);
//Simple constructor
NewMSSimulatorTester simulatorTester2("newsim2");
//This shared pointer gets deleted before the shared pointer inside simulator_p
std::shared_ptr<casacore::MeasurementSet> ms2 = simulatorTester.simulator_p->getMs();
//simulator is destroyed, but we keep a shared_ptr of the ms, so it should be fine
simulatorTester2.simulator_p.reset(0);
}
/*
* Filling random antenna information
*/
void test_NewMSSimulator_RandomAntenna()
{
std::mt19937 rng;
int nAntMax = 10;
for(int nAnt = 2 ; nAnt <= nAntMax; ++nAnt)
{
casacore::Vector<casacore::Double> x(nAnt), y(nAnt), z(nAnt), diam(nAnt), offset(nAnt);
casacore::Vector<casacore::String> mount(nAnt), name(nAnt), pad(nAnt);
std::uniform_real_distribution<> dist(0., 100.);
std::generate(x.begin(), x.end(), [&] () { return dist(rng); });
std::generate(y.begin(), y.end(), [&] () { return dist(rng); });
std::generate(z.begin(), z.end(), [&] () { return dist(rng); });
std::generate(diam.begin(), diam.end(), [&] () { return dist(rng); });
std::generate(offset.begin(), offset.end(), [&] () { return dist(rng); });
std::fill(mount.begin(), mount.end(), "ALT-AZ");
std::fill(name.begin(), name.end(), "NAME");
std::fill(pad.begin(), pad.end(), "PAD");
casacore::MPosition vlaPosition;
casacore::MeasTable::Observatory(vlaPosition, "VLA");
NewMSSimulatorTester simulatorTester("newsim_"+std::to_string(nAnt));
simulatorTester.simulator_p->initAnt("Simulated", x, y, z, diam, offset,
mount, name, pad, "global", vlaPosition);
//This shared pointer gets deleted before the shared pointer inside simulator_p
auto ms = simulatorTester.simulator_p->getMs();
}
}
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