Coverage for tests/test_TestUtilities.py : 47%

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# # LSST Data Management System # Copyright 2008-2017 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 <http://www.lsstcorp.org/LegalNotices/>. #
# Rename the class on import so it does not confuse the test scanner
# Construct an arbitrary WCS for testing. crval = lsst.geom.SpherePoint(45.0, 45.0, lsst.geom.degrees) scale = 0.2*lsst.geom.arcseconds crpix = lsst.geom.PointD(100, 100) self.wcs = afwGeom.makeSkyWcs(crpix=crpix, crval=crval, cdMatrix=afwGeom.makeCdMatrix(scale=scale))
del self.wcs
"""Test that perturbing a WCS gives us back something different.""" # We should always get something different from our starting point. self.assertNotEqual(self.wcs, DatasetTester.makePerturbedWcs(self.wcs))
# If we use the same random seed, the results should be reproducible. self.assertEqual(DatasetTester.makePerturbedWcs(self.wcs, randomSeed=0), DatasetTester.makePerturbedWcs(self.wcs, randomSeed=0))
# If we specify different seeds, we should always get something # different. self.assertNotEqual(DatasetTester.makePerturbedWcs(self.wcs, randomSeed=1), DatasetTester.makePerturbedWcs(self.wcs, randomSeed=2))
"""Test that we do not alter global state when perturbing the WCS.""" # This checks that global state doesn't change while the test is # executing. This isn't perfectly robust: the test will fail if # another thread manipulates the RNG state while this is executing. # However, since pytest doesn't using multi-threading, it should be # safe in practice. init_state = np.random.get_state() DatasetTester.makePerturbedWcs(self.wcs) for init, final in zip(init_state, np.random.get_state()): self.assertTrue(np.array_equal(init, final))
utilsTests.init()
utilsTests.init() unittest.main() |