Coverage for tests/test_imagePsf_trampoline.py: 39%
79 statements
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« prev ^ index » next coverage.py v7.2.5, created at 2023-05-10 02:04 -0700
1# This file is part of meas_algorithms.
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/>.
22import pickle
23import unittest
24from copy import deepcopy
26import numpy as np
28import lsst.utils.tests
29from lsst.afw.image import Image, ExposureF
30from lsst.afw.typehandling import StorableHelperFactory
31from lsst.geom import Box2I, Point2I, Extent2I
32from lsst.meas.algorithms import ImagePsf
35class MyTestImagePsf(ImagePsf):
36 _factory = StorableHelperFactory(__name__, "MyTestImagePsf")
38 def __init__(self, image):
39 ImagePsf.__init__(self)
40 self.image = image
42 # "public" virtual overrides
43 def __deepcopy__(self, meta=None):
44 return MyTestImagePsf(self.image)
46 def resized(self, width, height):
47 raise NotImplementedError("resized not implemented for MyTestImagePsf")
49 def isPersistable(self):
50 return True
52 # "private" virtual overrides are underscored
53 def _doComputeKernelImage(self, position=None, color=None):
54 return self.image
56 def _doComputeBBox(self, position=None, color=None):
57 return self.image.getBBox()
59 def _getPersistenceName(self):
60 return "MyTestImagePsf"
62 def _getPythonModule(self):
63 return __name__
65 def _write(self):
66 return pickle.dumps(self.image)
68 @staticmethod
69 def _read(pkl):
70 return MyTestImagePsf(pickle.loads(pkl))
72 def __eq__(self, rhs):
73 if isinstance(rhs, MyTestImagePsf):
74 return np.array_equal(self.image.array, rhs.image.array)
75 return False
78class ImagePsfTrampolineTestSuite(lsst.utils.tests.TestCase):
79 def setUp(self):
80 dimensions = Extent2I(7, 7)
81 self.bbox = Box2I(Point2I(-dimensions/2), dimensions)
82 self.img = Image(self.bbox, dtype=np.float64)
83 x, y = np.ogrid[-3:4, -3:4]
84 rsqr = x**2 + y**2
85 # Some arbitrary circular double Gaussian
86 self.img.array[:] = np.exp(-0.5*rsqr**2) + np.exp(-0.5*rsqr**2/4)
87 self.img.array /= np.sum(self.img.array)
88 self.psf = MyTestImagePsf(self.img)
89 self.averagePosition = self.psf.getAveragePosition()
91 def testImage(self):
92 self.assertImagesEqual(
93 self.img,
94 self.psf.computeImage(self.averagePosition)
95 )
96 self.assertImagesEqual(
97 self.img,
98 self.psf.computeKernelImage(self.averagePosition)
99 )
101 def testBBox(self):
102 self.assertEqual(
103 self.bbox,
104 self.psf.computeBBox(self.averagePosition)
105 )
107 def testResized(self):
108 with self.assertRaises(NotImplementedError):
109 self.psf.resized(9, 9)
111 def testClone(self):
112 clone1 = deepcopy(self.psf)
113 clone2 = self.psf.clone()
114 for clone in [clone1, clone2]:
115 self.assertIsNot(clone, self.psf)
116 self.assertImagesEqual(
117 clone.computeImage(clone.getAveragePosition()),
118 self.psf.computeImage(self.averagePosition)
119 )
120 self.assertEqual(
121 clone.computeApertureFlux(0.5, self.averagePosition),
122 self.psf.computeApertureFlux(0.5, self.averagePosition)
123 )
124 self.assertEqual(
125 clone.computeShape(clone.getAveragePosition()),
126 self.psf.computeShape(self.averagePosition)
127 )
129 def testPersistence(self):
130 im = ExposureF(10, 10)
131 im.setPsf(self.psf)
132 self.assertEqual(im.getPsf(), self.psf)
133 with lsst.utils.tests.getTempFilePath(".fits") as tmpFile:
134 im.writeFits(tmpFile)
135 newIm = ExposureF(tmpFile)
136 self.assertEqual(newIm.getPsf(), im.getPsf())
139class MemoryTester(lsst.utils.tests.MemoryTestCase):
140 pass
143def setup_module(module):
144 lsst.utils.tests.init()
147if __name__ == "__main__": 147 ↛ 148line 147 didn't jump to line 148, because the condition on line 147 was never true
148 lsst.utils.tests.init()
149 unittest.main()