Coverage for tests/test_clipFootprintToNonZeroImpl.py: 52%

25 statements  

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1# 

2# LSST Data Management System 

3# 

4# Copyright 2008-2017 AURA/LSST. 

5# 

6# This product includes software developed by the 

7# LSST Project (http://www.lsst.org/). 

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 LSST License Statement and 

20# the GNU General Public License along with this program. If not, 

21# see <https://www.lsstcorp.org/LegalNotices/>. 

22# 

23import unittest 

24 

25import lsst.utils.tests 

26import lsst.afw.detection as afwDet 

27import lsst.geom as geom 

28import lsst.afw.geom as afwGeom 

29import lsst.afw.image as afwImage 

30from lsst.meas.deblender.plugins import clipFootprintToNonzeroImpl 

31 

32 

33class ClipFootprintTestCase(lsst.utils.tests.TestCase): 

34 """This is s a test to verify that clipping footprints to a non-zero region 

35 works as intended. It is expected that spans which contain leading or 

36 trailing zeros will be trimmed as to not include these values, while zeros 

37 which occur inside a span will be preserved. 

38 """ 

39 def testClip(self): 

40 im = afwImage.ImageI(geom.Box2I(geom.Point2I(-2, -2), 

41 geom.Extent2I(20, 20))) 

42 

43 span1 = afwGeom.SpanSet.fromShape(5, afwGeom.Stencil.BOX, (6, 6)) 

44 span1.setImage(im, 20) 

45 

46 im.getArray()[6+2, 6+2] = 0 

47 

48 # Set some negative pixels to ensure they are not clipped 

49 im.getArray()[12, :] *= -1 

50 

51 span2 = afwGeom.SpanSet.fromShape(6, afwGeom.Stencil.BOX, (6, 6)) 

52 

53 foot = afwDet.Footprint(span2) 

54 

55 clipFootprintToNonzeroImpl(foot, im) 

56 

57 self.assertEqual(foot.spans, span1) 

58 

59 

60class TestMemory(lsst.utils.tests.MemoryTestCase): 

61 pass 

62 

63 

64def setup_module(module): 

65 lsst.utils.tests.init() 

66 

67 

68if __name__ == "__main__": 68 ↛ 69line 68 didn't jump to line 69, because the condition on line 68 was never true

69 lsst.utils.tests.init() 

70 unittest.main()