Coverage for tests/test_forcedPhot.py: 38%
54 statements
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1# This file is part of meas_base.
2#
3# Developed for the LSST Data Management System.
4# This product includes software developed by the LSST Project
5# (https://www.lsst.org).
6# See the COPYRIGHT file at the top-level directory of this distribution
7# for details of code ownership.
8#
9# This program is free software: you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation, either version 3 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program. If not, see <https://www.gnu.org/licenses/>.
22"""Tests of the various forced photometry tasks.
24These tests primarily confirm that their respective Tasks can be configured and
25run without errors, but do not check anything about their algorithmic quality.
26"""
28import unittest
30import numpy as np
32import lsst.afw.image
33from lsst.afw.math import ChebyshevBoundedField
34from lsst.afw.table import CoordKey
35from lsst.meas.base import ForcedPhotCcdTask, ForcedPhotCcdFromDataFrameTask
36import lsst.meas.base.tests
37import lsst.utils.tests
39skyCenter = lsst.geom.SpherePoint(245.0, -45.0, lsst.geom.degrees)
42class ForcedPhotometryTests:
43 """Base class for tests of forced photometry tasks.
45 Creates a simple test image and catalog to run forced photometry on.
46 """
47 def setUp(self):
48 bbox = lsst.geom.Box2I(lsst.geom.Point2I(0, 0), lsst.geom.Point2I(100, 100))
49 dataset = lsst.meas.base.tests.TestDataset(bbox, crval=skyCenter)
50 dataset.addSource(instFlux=1000, centroid=lsst.geom.Point2D(30, 30))
51 dataset.addSource(instFlux=10000, centroid=lsst.geom.Point2D(60, 70))
53 schema = dataset.makeMinimalSchema()
54 # Add coordinate error fields needed by updateSourceCoords below:
55 CoordKey.addErrorFields(schema)
56 self.exposure, self.refCat = dataset.realize(noise=10, schema=schema)
57 lsst.afw.table.updateSourceCoords(self.exposure.wcs, self.refCat)
58 # Simple aperture correction map in case the task needs it.
59 apCorrMap = lsst.afw.image.ApCorrMap()
60 apCorrMap["base_PsfFlux_instFlux"] = ChebyshevBoundedField(bbox, np.array([[2.0]]))
61 apCorrMap["base_PsfFlux_instFluxErr"] = ChebyshevBoundedField(bbox, np.array([[3.0]]))
62 self.exposure.info.setApCorrMap(apCorrMap)
64 # Offset WCS so that the forced coordinates don't match the truth.
65 self.offsetWcs = dataset.makePerturbedWcs(self.exposure.wcs)
68class ForcedPhotCcdTaskTestCase(ForcedPhotometryTests, lsst.utils.tests.TestCase):
69 def testRun(self):
70 config = ForcedPhotCcdTask.ConfigClass()
71 task = ForcedPhotCcdTask(refSchema=self.refCat.schema, config=config)
72 measCat = task.measurement.generateMeasCat(self.exposure, self.refCat, self.exposure.wcs)
74 task.run(measCat, self.exposure, self.refCat, self.offsetWcs)
76 # Check that something was measured.
77 self.assertTrue(np.isfinite(measCat["base_TransformedCentroid_x"]).all())
78 self.assertTrue(np.isfinite(measCat["base_TransformedCentroid_y"]).all())
79 self.assertTrue(np.isfinite(measCat["base_PsfFlux_instFlux"]).all())
80 # We use an offset WCS, so the transformed centroids should not exactly
81 # match the original positions.
82 self.assertFloatsNotEqual(measCat["base_TransformedCentroid_x"], self.refCat['truth_x'])
83 self.assertFloatsNotEqual(measCat["base_TransformedCentroid_y"], self.refCat['truth_y'])
86class ForcedPhotCcdFromDataFrameTaskTestCase(ForcedPhotometryTests, lsst.utils.tests.TestCase):
87 def testRun(self):
88 """Testing run() for this task ignores the dataframe->SourceCatalog
89 conversion that happens in runQuantum, but that should be tested
90 separately.
91 """
92 config = ForcedPhotCcdFromDataFrameTask.ConfigClass()
93 task = ForcedPhotCcdFromDataFrameTask(refSchema=self.refCat.schema, config=config)
94 measCat = task.measurement.generateMeasCat(self.exposure, self.refCat, self.exposure.wcs)
96 task.run(measCat, self.exposure, self.refCat, self.offsetWcs)
98 # Check that something was measured.
99 self.assertTrue(np.isfinite(measCat["base_TransformedCentroidFromCoord_x"]).all())
100 self.assertTrue(np.isfinite(measCat["base_TransformedCentroidFromCoord_y"]).all())
101 self.assertTrue(np.isfinite(measCat["base_PsfFlux_instFlux"]).all())
102 # We use an offset WCS, so the transformed centroids should not exactly
103 # match the original positions.
104 self.assertFloatsNotEqual(measCat["base_TransformedCentroidFromCoord_x"], self.refCat['truth_x'])
105 self.assertFloatsNotEqual(measCat["base_TransformedCentroidFromCoord_y"], self.refCat['truth_y'])
108class MemoryTester(lsst.utils.tests.MemoryTestCase):
109 pass
112def setup_module(module):
113 lsst.utils.tests.init()
116if __name__ == "__main__": 116 ↛ 117line 116 didn't jump to line 117, because the condition on line 116 was never true
117 lsst.utils.tests.init()
118 unittest.main()