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# This file is part of obs_base. 

# 

# 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 unittest 

 

import lsst.utils.tests 

import lsst.afw.image 

from lsst.obs.base import FilterDefinition, FilterDefinitionCollection 

import lsst.pex.exceptions 

 

 

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

def setUp(self): 

self.filters1 = FilterDefinitionCollection(FilterDefinition(physical_filter='abc', lambdaEff=123), 

FilterDefinition(physical_filter='def', lambdaEff=456)) 

self.filters2 = FilterDefinitionCollection(FilterDefinition(physical_filter='abc', lambdaEff=321), 

FilterDefinition(physical_filter='def', lambdaEff=654)) 

FilterDefinitionCollection.reset() 

 

def test_singleton(self): 

self.filters1.defineFilters() 

self.assertEqual(lsst.afw.image.Filter('abc').getFilterProperty().getLambdaEff(), 123) 

self.assertEqual(lsst.afw.image.Filter('def').getFilterProperty().getLambdaEff(), 456) 

self.filters1.defineFilters() # this should not change anything 

self.assertEqual(lsst.afw.image.Filter('abc').getFilterProperty().getLambdaEff(), 123) 

self.assertEqual(lsst.afw.image.Filter('def').getFilterProperty().getLambdaEff(), 456) 

with self.assertRaises(RuntimeError): 

self.filters2.defineFilters() 

# the defined filters should be unchanged 

self.assertEqual(lsst.afw.image.Filter('abc').getFilterProperty().getLambdaEff(), 123) 

self.assertEqual(lsst.afw.image.Filter('def').getFilterProperty().getLambdaEff(), 456) 

 

def test_reset(self): 

self.filters1.defineFilters() 

with self.assertRaises(RuntimeError): 

self.filters2.defineFilters() 

self.filters1.reset() 

# The new filters can be defiend and should replace the old ones. 

self.filters2.defineFilters() 

self.assertEqual(lsst.afw.image.Filter('abc').getFilterProperty().getLambdaEff(), 321) 

self.assertEqual(lsst.afw.image.Filter('def').getFilterProperty().getLambdaEff(), 654) 

 

 

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

def setUp(self): 

lsst.afw.image.utils.resetFilters() 

self.filter_g = FilterDefinition(abstract_filter="g", 

physical_filter="HSC-G", 

lambdaEff=1234, 

alias={'ABCDEFG'}) 

self.filter_g2 = FilterDefinition(abstract_filter="g", 

physical_filter="HSC-G2", 

afw_name='g2', 

lambdaEff=1235, 

alias={'HIJK'}) 

 

self.physical_only = FilterDefinition(physical_filter="physical", lambdaEff=0) 

self.afw_name = FilterDefinition(physical_filter="afw_name", 

lambdaEff=5, afw_name="afw only") 

self.abstract = FilterDefinition(physical_filter="abstract", lambdaEff=42, 

abstract_filter="abstract only") 

 

def testDefineFilters(self): 

"""Test that a filter is properly defined in afw.""" 

# the filter should not exist until we define it 

with self.assertRaises(lsst.pex.exceptions.NotFoundError): 

lsst.afw.image.Filter('g') 

with self.assertRaises(lsst.pex.exceptions.NotFoundError): 

lsst.afw.image.Filter('g2') 

with self.assertRaises(lsst.pex.exceptions.NotFoundError): 

lsst.afw.image.Filter('HSC-G') 

 

self.filter_g.defineFilter() 

filter = lsst.afw.image.Filter('g') 

filter_alias = lsst.afw.image.Filter('HSC-G') 

self.assertEqual(filter.getName(), 'g') 

# afw Filter stores the aliased name as the CannonicalName 

self.assertEqual(filter_alias.getCanonicalName(), 'g') 

self.assertEqual(filter, filter_alias) 

self.assertEqual(['ABCDEFG', 'HSC-G'], sorted(filter.getAliases())) 

 

self.filter_g2.defineFilter() 

filter2 = lsst.afw.image.Filter('g2') 

filter2_alias = lsst.afw.image.Filter('HSC-G2') 

self.assertEqual(filter2.getName(), 'g2') 

self.assertEqual(filter2_alias.getCanonicalName(), 'g2') 

self.assertEqual(filter2, filter2_alias) 

self.assertEqual(['HIJK', 'HSC-G2', 'g'], sorted(filter2.getAliases())) 

 

def test_physical_only(self): 

"""physical_filter is the only name this filter has. 

""" 

self.physical_only.defineFilter() 

filter = lsst.afw.image.Filter('physical') 

self.assertEqual(filter.getName(), 'physical') 

self.assertEqual([], sorted(filter.getAliases())) 

 

def test_afw_name(self): 

"""afw_name is the Filter name, physical_filter is an alias. 

""" 

self.afw_name.defineFilter() 

filter = lsst.afw.image.Filter('afw only') 

filter_alias = lsst.afw.image.Filter('afw_name') 

self.assertEqual(filter.getName(), 'afw only') 

self.assertEqual(filter_alias.getCanonicalName(), 'afw only') 

self.assertEqual(['afw_name'], sorted(filter.getAliases())) 

 

def test_abstract_only(self): 

"""abstract_filter is the Filter name, physical_filter is an alias. 

""" 

self.abstract.defineFilter() 

filter = lsst.afw.image.Filter('abstract only') 

filter_alias = lsst.afw.image.Filter('abstract') 

self.assertEqual(filter.getName(), 'abstract only') 

self.assertEqual(filter_alias.getCanonicalName(), 'abstract only') 

self.assertEqual(['abstract'], sorted(filter.getAliases())) 

 

 

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

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

145 ↛ 146line 145 didn't jump to line 146, because the condition on line 145 was never trueif __name__ == '__main__': 

lsst.utils.tests.init() 

unittest.main()