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# This file is part of jointcal. 

# 

# Developed for the LSST Data Management System. 

# This product includes software developed by the LSST Project 

# (https://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 <https://www.gnu.org/licenses/>. 

 

"""Test creation and use of the CcdImage class.""" 

import unittest 

 

import lsst.utils.tests 

from lsst.jointcal import testUtils 

 

import lsst.afw.geom 

import lsst.jointcal 

 

 

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

def setUp(self): 

self.nStars1 = 4 

self.nStars2 = 100 

struct = testUtils.createTwoFakeCcdImages(num1=self.nStars1, num2=self.nStars2) 

self.ccdImage1 = struct.ccdImageList[0] 

self.ccdImage2 = struct.ccdImageList[1] 

self.bbox = struct.bbox 

 

self.associations = lsst.jointcal.Associations(struct.ccdImageList) 

 

def checkCountStars(self, ccdImage, nStars): 

"""Check that ccdImage.countStars() is correct under various conditions. 

 

Parameters 

---------- 

ccdImage : `lsst.jointcal.CcdImage` 

The ccdImage to test. 

nStars : `int` 

Number of stars in ccdImage's catalog. 

 

Notes 

----- 

Does not test the case where some ``measuredStars`` are not ``valid``, 

as there is no interface for modifying that the python level. To test 

that would require creating a `Fitter` and a fake outlier list and 

calling ``removeMeasOutliers`` and/or ``removeRefOutliers``, which 

cannot be easily made part of the python API. 

""" 

# By default there are no stars because catalogForFit is uninitialized. 

measStars, refStars = ccdImage.countStars() 

self.assertEqual(measStars, 0) 

self.assertEqual(refStars, 0) 

 

# With no associations, the catalog should have exactly as many valid 

# measuredStars as were created. 

ccdImage.resetCatalogForFit() 

measStars, refStars = ccdImage.countStars() 

self.assertEqual(measStars, nStars) 

self.assertEqual(refStars, 0) 

 

# Cross match catalogs: there will still be no refcat matches. 

matchCut = 3.0 * lsst.afw.geom.arcseconds 

# There should be no fittedStars until we associate the catalogs. 

self.assertEqual(self.associations.fittedStarListSize(), 0) 

self.associations.computeCommonTangentPoint() 

self.associations.associateCatalogs(matchCut) 

# Confirm that every measuredStar (in both ccdImages) got a fittedStar associated to it. 

self.assertEqual(self.associations.fittedStarListSize(), self.nStars1 + self.nStars2) 

# measuredStars and refStars should be unchanged after association. 

self.assertEqual(measStars, nStars) 

self.assertEqual(refStars, 0) 

 

# Make a fake reference catalog; will match the catalog one-to-one. 

skyWcs = ccdImage.getReadWcs().getSkyWcs() 

self.refCat = testUtils.createFakeCatalog(nStars, self.bbox, "refFlux", skyWcs=skyWcs, refCat=True) 

# associate the reference stars 

self.associations.collectRefStars(self.refCat, matchCut, 'refFlux_instFlux', 0.1) 

measStars, refStars = ccdImage.countStars() 

self.assertEqual(measStars, nStars) 

self.assertEqual(refStars, nStars) 

 

def testCcdImage1(self): 

self.checkCountStars(self.ccdImage1, self.nStars1) 

 

def testCcdImage2(self): 

self.checkCountStars(self.ccdImage2, self.nStars2) 

 

 

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

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

109 ↛ 110line 109 didn't jump to line 110, because the condition on line 109 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()