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# 

# LSST Data Management System 

# Copyright 2008, 2009, 2010 LSST Corporation. 

# 

# This product includes software developed by the 

# LSST Project (http://www.lsst.org/). 

# 

# 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 LSST License Statement and 

# the GNU General Public License along with this program. If not, 

# see <http://www.lsstcorp.org/LegalNotices/>. 

# 

 

"""Test lsst.coadd.utils.Coadd 

""" 

import os 

import unittest 

 

import lsst.utils 

import lsst.utils.tests 

import lsst.afw.geom as afwGeom 

import lsst.afw.image as afwImage 

import lsst.afw.image.utils as imageUtils 

import lsst.coadd.utils as coaddUtils 

from lsst.log import Log 

 

try: 

display 

except NameError: 

display = False 

 

Log.getLogger("coadd.utils").setLevel(Log.INFO) 

 

try: 

AfwdataDir = lsst.utils.getPackageDir('afwdata') 

except Exception: 

AfwdataDir = None 

# path to LsstSim calexp relative to afwData package root 

SimCalexpSubpath = os.path.join("ImSim", "calexp", "v85408556-fr", "R23", "S11.fits") 

 

 

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

"""A test case for Coadd 

""" 

 

@unittest.skipUnless(AfwdataDir, "afwdata not available") 

def testAddOne(self): 

"""Add a single exposure; make sure coadd = input, appropriately scaled 

""" 

calexpPath = os.path.join(AfwdataDir, SimCalexpSubpath) 

inExp = afwImage.ExposureF(calexpPath) 

inMaskedImage = inExp.getMaskedImage() 

for badMaskPlanes in ( 

(), 

("NO_DATA", "BAD"), 

): 

coadd = coaddUtils.Coadd( 

bbox=inExp.getBBox(), 

wcs=inExp.getWcs(), 

badMaskPlanes=badMaskPlanes, 

) 

coadd.addExposure(inExp) 

coaddExp = coadd.getCoadd() 

coaddMaskedImage = coaddExp.getMaskedImage() 

 

inMaskArr = inMaskedImage.getMask().getArray() 

badMask = coadd.getBadPixelMask() 

skipMaskArr = inMaskArr & badMask != 0 

 

msg = "coadd != input exposure" 

self.assertMaskedImagesAlmostEqual(inMaskedImage, coaddMaskedImage, skipMask=skipMaskArr, msg=msg) 

 

@unittest.skipUnless(AfwdataDir, "afwdata not available") 

def testGetters(self): 

"""Test getters for coadd 

""" 

calexpPath = os.path.join(AfwdataDir, SimCalexpSubpath) 

inExp = afwImage.ExposureF(calexpPath) 

bbox = inExp.getBBox() 

wcs = inExp.getWcs() 

for badMaskPlanes, bbox in ( 

(("NO_DATA",), afwGeom.Box2I(afwGeom.Point2I(1, 2), afwGeom.Extent2I(100, 102))), 

(("NO_DATA", "BAD"), afwGeom.Box2I(afwGeom.Point2I(0, 0), afwGeom.Extent2I(100, 102))), 

(("NO_DATA",), afwGeom.Box2I(afwGeom.Point2I(104, 0), afwGeom.Extent2I(5, 10))), 

(("NO_DATA",), afwGeom.Box2I(afwGeom.Point2I(0, 1020), afwGeom.Extent2I(100, 102))), 

): 

coadd = coaddUtils.Coadd( 

bbox=bbox, 

wcs=wcs, 

badMaskPlanes=badMaskPlanes, 

) 

badPixelMask = 0 

for maskPlaneName in badMaskPlanes: 

badPixelMask += afwImage.Mask.getPlaneBitMask(maskPlaneName) 

self.assertEqual(bbox, coadd.getBBox()) 

self.assertEqual(badPixelMask, coadd.getBadPixelMask()) 

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

 

@unittest.skipUnless(AfwdataDir, "afwdata not available") 

def testFilters(self): 

"""Test that the coadd filter is set correctly 

""" 

 

imageUtils.defineFilter("g", 468.6) 

imageUtils.defineFilter("r", 616.5) 

 

unkFilter = afwImage.Filter() 

gFilter = afwImage.Filter("g") 

rFilter = afwImage.Filter("r") 

 

calexpPath = os.path.join(AfwdataDir, SimCalexpSubpath) 

inExp = afwImage.ExposureF(calexpPath, afwGeom.Box2I(afwGeom.Point2I(0, 0), afwGeom.Extent2I(10, 10)), 

afwImage.PARENT) 

coadd = coaddUtils.Coadd( 

bbox=inExp.getBBox(), 

wcs=inExp.getWcs(), 

badMaskPlanes=("NO_DATA", "BAD"), 

) 

 

inExp.setFilter(gFilter) 

coadd.addExposure(inExp) 

self.assertEqualFilters(coadd.getCoadd().getFilter(), gFilter) 

self.assertEqualFilterSets(coadd.getFilters(), (gFilter,)) 

coadd.addExposure(inExp) 

self.assertEqualFilters(coadd.getCoadd().getFilter(), gFilter) 

self.assertEqualFilterSets(coadd.getFilters(), (gFilter,)) 

 

inExp.setFilter(rFilter) 

coadd.addExposure(inExp) 

self.assertEqualFilters(coadd.getCoadd().getFilter(), unkFilter) 

self.assertEqualFilterSets(coadd.getFilters(), (gFilter, rFilter)) 

 

def assertEqualFilters(self, f1, f2): 

"""Compare two filters 

 

Right now compares only the name, but if == ever works for Filters (ticket #1744) 

then use == instead 

""" 

self.assertEqual(f1.getName(), f2.getName()) 

 

def assertEqualFilterSets(self, fs1, fs2): 

"""Assert that two collections of filters are equal, ignoring order 

""" 

self.assertEqual(set(f.getName() for f in fs1), set(f.getName() for f in fs2)) 

 

 

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

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

164 ↛ 165line 164 didn't jump to line 165, because the condition on line 164 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()