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# 

# LSST Data Management System 

# 

# Copyright 2008-2016 AURA/LSST. 

# 

# 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 <https://www.lsstcorp.org/LegalNotices/>. 

# 

import unittest 

 

 

import numpy as np 

 

import lsst.geom 

import lsst.afw.geom as afwGeom 

import lsst.afw.table as afwTable 

import lsst.meas.algorithms as measAlg 

import lsst.utils.tests 

 

 

class Ticket2986Test(unittest.TestCase): 

 

def test(self): 

schema = afwTable.ExposureTable.makeMinimalSchema() 

schema.addField("ccd", np.int32, doc="CCD number") 

schema.addField("visit", np.int32, doc="Visit number") 

schema.addField("goodpix", np.int32, doc="Number of good pixels") 

schema.addField("weight", float, doc="Weighting for this CCD") 

ccds = afwTable.ExposureCatalog(schema) 

 

scale = 1.0e-4*lsst.geom.degrees 

wcs = afwGeom.makeSkyWcs(crpix=lsst.geom.Point2D(0.0, 0.0), 

crval=lsst.geom.SpherePoint(0.0, 0.0, lsst.geom.degrees), 

cdMatrix=afwGeom.makeCdMatrix(scale=scale)) 

new = ccds.addNew() 

new.set("id", 0) 

new.set("bbox_min_x", 0) 

new.set("bbox_min_y", 0) 

new.set("bbox_max_x", 1024) 

new.set("bbox_max_y", 1024) 

 

# The following lines are critical for reproducing the bug, because 

# the code is reading a double starting at the 'ccd' (offset 24), and 

# it sees a zero (from the zero in 'ccd' and the leading zeros in 'visit'). 

new.set("ccd", 0) 

new.set("visit", 6789) 

 

new.set("goodpix", 987654321) 

new.set("weight", 1.0) 

new.setPsf(measAlg.SingleGaussianPsf(23, 23, 2.345)) 

new.setWcs(wcs) 

 

# In the presence of the bug, the following fails with 

# lsst::pex::exceptions::RuntimeError thrown in src/CoaddPsf.cc 

# with message: "Could not find a valid average position for CoaddPsf" 

measAlg.CoaddPsf(ccds, wcs) 

 

 

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

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

81 ↛ 82line 81 didn't jump to line 82, because the condition on line 81 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()