Coverage for tests/test_TestUtilities.py: 47%
30 statements
« prev ^ index » next coverage.py v6.5.0, created at 2022-11-19 02:08 -0800
« prev ^ index » next coverage.py v6.5.0, created at 2022-11-19 02:08 -0800
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/>.
22import unittest
24import numpy as np
26import lsst.geom
27import lsst.afw.geom as afwGeom
28import lsst.utils.tests as utilsTests
30# Rename the class on import so it does not confuse the test scanner
31from lsst.meas.base.tests import TestDataset as DatasetTester
34class TestDatasetTestCase(utilsTests.TestCase):
36 def setUp(self):
37 # Construct an arbitrary WCS for testing.
38 crval = lsst.geom.SpherePoint(45.0, 45.0, lsst.geom.degrees)
39 scale = 0.2*lsst.geom.arcseconds
40 crpix = lsst.geom.PointD(100, 100)
41 self.wcs = afwGeom.makeSkyWcs(crpix=crpix, crval=crval,
42 cdMatrix=afwGeom.makeCdMatrix(scale=scale))
44 def tearDown(self):
45 del self.wcs
47 def test_perturb(self):
48 """Test that perturbing a WCS gives us back something different.
49 """
50 # We should always get something different from our starting point.
51 self.assertNotEqual(self.wcs, DatasetTester.makePerturbedWcs(self.wcs))
53 # If we use the same random seed, the results should be reproducible.
54 self.assertEqual(DatasetTester.makePerturbedWcs(self.wcs, randomSeed=0),
55 DatasetTester.makePerturbedWcs(self.wcs, randomSeed=0))
57 # If we specify different seeds, we should always get something
58 # different.
59 self.assertNotEqual(DatasetTester.makePerturbedWcs(self.wcs, randomSeed=1),
60 DatasetTester.makePerturbedWcs(self.wcs, randomSeed=2))
62 def test_randomState(self):
63 """Test that we do not alter global state when perturbing the WCS.
65 Notes
66 -----
67 This checks that global state doesn't change while the test is
68 executing. This isn't perfectly robust: the test will fail if another
69 thread manipulates the RNG state while this is executing. However,
70 since pytest doesn't using multi-threading, it should be safe in
71 practice.
72 """
73 init_state = np.random.get_state()
74 DatasetTester.makePerturbedWcs(self.wcs)
75 for init, final in zip(init_state, np.random.get_state()):
76 self.assertTrue(np.array_equal(init, final))
79class TestMemory(utilsTests.MemoryTestCase):
80 pass
83def setup_module(module):
84 utilsTests.init()
87if __name__ == "__main__": 87 ↛ 88line 87 didn't jump to line 88, because the condition on line 87 was never true
88 utilsTests.init()
89 unittest.main()