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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.afw.table as afwTable 

from lsst.meas.algorithms import sourceSelector 

import lsst.meas.base.tests 

import lsst.utils.tests 

 

badFlags = [ 

"slot_Centroid_flag", 

"slot_ApFlux_flag", 

] 

 

 

def add_good_source(src, num=0): 

"""Insert a likely-good source into the catalog.""" 

""" 

num is added to various values to distinguish them in catalogs with multiple objects. 

""" 

src.addNew() 

src['coord_ra'][-1] = 1. + num 

src['coord_dec'][-1] = 2. + num 

src['slot_Centroid_x'][-1] = 10. + num 

src['slot_Centroid_y'][-1] = 20. + num 

src['slot_ApFlux_flux'][-1] = 100. + num 

src['slot_ApFlux_fluxErr'][-1] = 1. 

 

 

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

 

def setUp(self): 

schema = lsst.meas.base.tests.TestDataset.makeMinimalSchema() 

schema.addField("slot_ApFlux_flux", type=float) 

schema.addField("slot_ApFlux_fluxErr", type=float) 

for flag in badFlags: 

schema.addField(flag, type="Flag") 

 

self.src = afwTable.SourceCatalog(schema) 

self.sourceSelector = sourceSelector.sourceSelectorRegistry['matcher']() 

 

def tearDown(self): 

del self.src 

del self.sourceSelector 

 

def testSelectSources_good(self): 

for i in range(5): 

add_good_source(self.src, i) 

result = self.sourceSelector.run(self.src) 

# TODO: assertEqual doesn't work correctly on source catalogs. 

# self.assertEqual(result.sourceCat, self.src) 

for x in self.src['id']: 

self.assertIn(x, result.sourceCat['id']) 

 

def testSelectSources_bad_centroid(self): 

add_good_source(self.src, 1) 

self.src[0].set('slot_Centroid_x', np.nan) 

result = self.sourceSelector.run(self.src) 

self.assertNotIn(self.src['id'][0], result.sourceCat['id']) 

 

def testSelectSources_is_parent(self): 

add_good_source(self.src, 1) 

self.src[0].set('parent', 1) 

result = self.sourceSelector.run(self.src) 

self.assertNotIn(self.src['id'][0], result.sourceCat['id']) 

 

def testSelectSources_highSN_cut(self): 

add_good_source(self.src, 1) 

add_good_source(self.src, 2) 

self.src['slot_ApFlux_flux'][0] = 20. 

self.src['slot_ApFlux_flux'][1] = 1000. 

 

self.sourceSelector.config.minSnr = 100 

result = self.sourceSelector.run(self.src) 

self.assertNotIn(self.src[0]['id'], result.sourceCat['id']) 

self.assertIn(self.src[1]['id'], result.sourceCat['id']) 

 

def testSelectSources_no_SN_cut(self): 

self.sourceSelector.config.minSnr = 0 

add_good_source(self.src, 1) 

self.src['slot_ApFlux_flux'][0] = 0 

result = self.sourceSelector.run(self.src) 

self.assertIn(self.src[0]['id'], result.sourceCat['id']) 

 

 

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

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

116 ↛ 117line 116 didn't jump to line 117, because the condition on line 116 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()