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# This file is part of obs_test. 

# 

# Developed for the LSST Data Management System. 

# This product includes software developed by the LSST Project 

# (http://www.lsst.org). 

# See the COPYRIGHT file at the top-level directory of this distribution 

# for details of code ownership. 

# 

# 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 math 

import os 

import unittest 

 

import lsst.afw.image 

from lsst.afw.geom import SkyWcs 

import lsst.daf.persistence as dafPersist 

import lsst.utils.tests 

from lsst.utils import getPackageDir 

 

obsTestDir = getPackageDir('obs_test') 

 

 

class TestCalexpMetadataObjects(lsst.utils.tests.TestCase): 

"""A test case for getting metadata objects from a Calexp""" 

 

def setUp(self): 

self.input = os.path.join(obsTestDir, 

'data', 

'calexpMetadataObjectsTest') 

 

def nanSafeAssertEqual(self, val1, val2): 

try: 

self.assertEqual(val1, val2) 

except AssertionError as err: 

if math.isnan(val1) and math.isnan(val2): 

pass 

else: 

raise err 

 

def testNanSafeAssertEqual(self): 

val1 = float('nan') 

val2 = float(123.45) 

with self.assertRaises(AssertionError): 

self.nanSafeAssertEqual(val1, val2) 

val1 = float(123.44) 

val2 = float(123.45) 

with self.assertRaises(AssertionError): 

self.nanSafeAssertEqual(val1, val2) 

# should not raise: 

val1 = float('nan') 

val2 = float('nan') 

self.nanSafeAssertEqual(val1, val2) 

val1 = float(123.45) 

val2 = float(123.45) 

self.nanSafeAssertEqual(val1, val2) 

 

def test(self): 

"""Get the wcs, calib, and visitInfo from a calexp dataset.""" 

butler = dafPersist.Butler(inputs=self.input) 

wcs = butler.get('calexp_wcs', immediate=True) 

calib = butler.get('calexp_calib', immediate=True) 

visitInfo = butler.get('calexp_visitInfo', immediate=True) 

filt = butler.get('calexp_filter', immediate=True) 

calexp = butler.get('calexp', immediate=True) 

self.assertIsInstance(calexp, lsst.afw.image.ExposureF) 

 

self.assertIsInstance(wcs, SkyWcs) 

self.assertWcsAlmostEqualOverBBox(wcs, calexp.getWcs(), calexp.getBBox()) 

 

self.assertIsInstance(calib, lsst.afw.image.Calib) 

self.assertEqual(calib, calexp.getCalib()) 

 

self.assertIsInstance(visitInfo, lsst.afw.image.VisitInfo) 

self.assertIsInstance(filt, lsst.afw.image.Filter) 

 

self.assertEqual(visitInfo.getExposureId(), calexp.getInfo().getVisitInfo().getExposureId()) 

self.assertEqual(visitInfo.getExposureTime(), calexp.getInfo().getVisitInfo().getExposureTime()) 

self.nanSafeAssertEqual(visitInfo.getDarkTime(), calexp.getInfo().getVisitInfo().getDarkTime()) 

self.assertEqual(visitInfo.getDate(), calexp.getInfo().getVisitInfo().getDate()) 

self.nanSafeAssertEqual(visitInfo.getUt1(), calexp.getInfo().getVisitInfo().getUt1()) 

self.nanSafeAssertEqual(visitInfo.getEra(), calexp.getInfo().getVisitInfo().getEra()) 

self.assertEqual(visitInfo.getBoresightRaDec(), calexp.getInfo().getVisitInfo().getBoresightRaDec()) 

self.assertEqual(visitInfo.getBoresightAzAlt(), calexp.getInfo().getVisitInfo().getBoresightAzAlt()) 

self.assertEqual(visitInfo.getBoresightAirmass(), 

calexp.getInfo().getVisitInfo().getBoresightAirmass()) 

self.nanSafeAssertEqual(visitInfo.getBoresightRotAngle(), 

calexp.getInfo().getVisitInfo().getBoresightRotAngle()) 

self.assertEqual(visitInfo.getRotType(), calexp.getInfo().getVisitInfo().getRotType()) 

self.assertEqual(visitInfo.getObservatory(), calexp.getInfo().getVisitInfo().getObservatory()) 

self.assertEqual(visitInfo.getWeather(), calexp.getInfo().getVisitInfo().getWeather()) 

self.nanSafeAssertEqual(visitInfo.getLocalEra(), calexp.getInfo().getVisitInfo().getLocalEra()) 

self.nanSafeAssertEqual(visitInfo.getBoresightHourAngle(), 

calexp.getInfo().getVisitInfo().getBoresightHourAngle()) 

 

 

class MemoryTester(lsst.utils.tests.MemoryTestCase): 

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

117 ↛ 118line 117 didn't jump to line 118, because the condition on line 117 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()