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# This file is part of meas_astrom. 

# 

# 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/>. 

 

import sys 

import unittest 

 

import lsst.afw.table 

 

from lsst.geom import degrees 

from lsst.meas.astrom import denormalizeMatches 

 

 

class DenormalizeMatchesTestCase(unittest.TestCase): 

"""Test the behaviour of the denormalizedMatches function""" 

 

def checkDenormalizeMatches(self, refType, srcType, MatchClass, num=10): 

"""Check that denormalizeMatches works 

 

We create reference and source catalogs, generate matches, 

run denormalizeMatches and verify that the results are as 

expected (this includes checking that alias maps from the 

input catalogs are propagated to the "match" catalog). 

 

Parameters 

---------- 

refType : `str` 

Type of reference catalog/table; "Simple" or "Source". 

srcType : `str` 

Type of source catalog/table; "Simple" or "Source". 

MatchClass : `type` 

Class for match; should be suitable for the refType and srcType. 

""" 

refSchema = getattr(lsst.afw.table, refType + "Table").makeMinimalSchema() 

refCat = getattr(lsst.afw.table, refType + "Catalog")(refSchema) 

for ii in range(num): 

ref = refCat.addNew() 

ref.set("id", ii) 

 

srcSchema = getattr(lsst.afw.table, srcType + "Table").makeMinimalSchema() 

aliasDict = dict(srcIdAlias="id", srcCoordAlias="coord") 

for k, v in aliasDict.items(): # Add some aliases to srcSchema's aliasMap 

srcSchema.getAliasMap().set(k, v) 

 

srcCat = getattr(lsst.afw.table, srcType + "Catalog")(srcSchema) 

for ii in range(2*num, num, -1): 

src = srcCat.addNew() 

src.set("id", ii) 

src.set("coord_ra", 100.0*degrees) # Arbitrary numbers to avoid NANs for checking dereference 

src.set("coord_dec", 1.0*degrees) 

 

matches = [MatchClass(ref, src, ref.get("id")) for ref, src in zip(refCat, srcCat)] 

catalog = denormalizeMatches(matches) 

for row, ref, src in zip(catalog, refCat, srcCat): 

self.assertEqual(row.get("ref_id"), ref.get("id")) 

self.assertEqual(row.get("src_id"), src.get("id")) 

self.assertEqual(row.get("distance"), ref.get("id")) 

self.assertEqual(row.get("src_srcIdAlias"), row.get("src_id")) # intra-catalog check 

self.assertEqual(row.get("src_srcIdAlias"), src.get("id")) # inter-catalog check 

self.assertEqual(row.get("src_srcCoordAlias_ra"), src.get("coord_ra")) # inter-catalog check 

self.assertEqual(row.get("src_srcCoordAlias_dec"), src.get("coord_dec")) # inter-catalog check 

 

def testDenormalizeMatches(self): 

"""Test denormalizeMatches for various types""" 

for args in (("Simple", "Simple", lsst.afw.table.SimpleMatch), 

("Simple", "Source", lsst.afw.table.ReferenceMatch), 

("Source", "Source", lsst.afw.table.SourceMatch), 

): 

self.checkDenormalizeMatches(*args) 

 

 

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

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

97 ↛ 98line 97 didn't jump to line 98, because the condition on line 97 was never trueif __name__ == "__main__": 

setup_module(sys.modules[__name__]) 

unittest.main()