Coverage for tests/test_ssoAssociationTask.py: 24%

1# This file is part of ap_association. 

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/>. 

21 

22import numpy as np 

23from astropy.table import Table 

24import astropy.table as tb 

25import unittest 

26 

27from lsst.pipe.tasks.ssoAssociation import SolarSystemAssociationTask 

28import astshim as ast 

29import lsst.geom as geom 

30import lsst.afw.geom as afwGeom 

31import lsst.meas.base.tests as measTests 

32import lsst.utils.tests 

33 

34 

35class TestSolarSystemAssociation(unittest.TestCase): 

36 

37 def setUp(self): 

38 # Make fake sources 

39 self.nSources = 10 

40 self.bbox = geom.Box2I(geom.Point2I(0, 0), 

41 geom.Extent2I(1024, 1153)) 

42 self.xyLoc = 100 

43 dataset = measTests.TestDataset(self.bbox) 

44 for srcIdx in range(self.nSources): 

45 dataset.addSource(100000.0, 

46 geom.Point2D(srcIdx*self.xyLoc, 

47 srcIdx*self.xyLoc)) 

48 schema = dataset.makeMinimalSchema() 

49 schema.addField("base_PixelFlags_flag", type="Flag") 

50 schema.addField("base_PixelFlags_flag_offimage", type="Flag") 

51 self.exposure, catalog = dataset.realize( 

52 10.0, schema, randomSeed=1234) 

53 for src in catalog: 

54 src.setCoord(self.exposure.getWcs().pixelToSky(src.getCentroid())) 

55 # Non-invertible WCS to test robustness to distortions. 

56 # Coefficients transform (x - 1e-7*x^3 -> x, y -> y); see docs for PolyMap. 

57 pixelCoeffs = np.array([[-1.0e-7, 1, 3, 0], 

58 [1.0, 1, 1, 0], 

59 [1.0, 2, 0, 1], 

60 ]) 

61 self.exposure.setWcs(afwGeom.makeModifiedWcs( 

62 afwGeom.TransformPoint2ToPoint2(ast.PolyMap(pixelCoeffs, 2, options="IterInverse=1")), 

63 self.exposure.wcs, 

64 modifyActualPixels=False 

65 )) 

66 

67 # Convert to task required format 

68 self.testDiaSources = catalog.asAstropy() 

69 self.testDiaSources.rename_columns(["coord_ra", "coord_dec"], ["ra", "dec"]) 

70 self.testDiaSources["ra"] = np.rad2deg(self.testDiaSources["ra"]) 

71 self.testDiaSources["dec"] = np.rad2deg(self.testDiaSources["dec"]) 

72 self.testDiaSources = tb.vstack([self.testDiaSources, Table([[45], [45]], names=["ra", "dec"])]) 

73 self.testDiaSources["ssObjectId"] = 0 

74 self.testDiaSources["diaSourceId"] = [i for i in range(len(self.testDiaSources))] 

75 

76 # Grab a subset to treat as solar system objects 

77 self.testSsObjects = Table() 

78 self.testSsObjects["ObjID"] = ["test_ob"] 

79 self.testSsObjects["ssObjectId"] = [1234] 

80 self.testSsObjects["ra"] = [45] 

81 self.testSsObjects["dec"] = [45] 

82 self.testSsObjects["tmin"] = [-1] 

83 self.testSsObjects["tmax"] = [1] 

84 self.testSsObjects["obs_x_poly"] = [np.array([0])] 

85 self.testSsObjects["obs_y_poly"] = [np.array([0])] 

86 self.testSsObjects["obs_z_poly"] = [np.array([0])] 

87 self.testSsObjects["obj_x_poly"] = [np.array([1])] 

88 self.testSsObjects["obj_y_poly"] = [np.array([1])] 

89 self.testSsObjects["obj_z_poly"] = [np.array([2 ** 0.5])] 

90 self.testSsObjects["Err(arcsec)"] = np.ones(len(self.testSsObjects)) 

91 

92 def test_run(self): 

93 """Test that association and id assignment work as expected. 

94 """ 

95 ssAssocTask = SolarSystemAssociationTask() 

96 results = ssAssocTask.run(self.testDiaSources, 

97 self.testSsObjects, 

98 self.exposure.visitInfo, 

99 self.exposure.getBBox(), 

100 self.exposure.wcs) 

101 self.assertEqual(len(results.ssoAssocDiaSources), 1) 

102 self.assertEqual(results.ssoAssocDiaSources['ra'][0], 45.0) 

103 self.assertEqual(results.ssoAssocDiaSources['dec'][0], 45.0) 

104 self.assertEqual(results.ssoAssocDiaSources['ssObjectId'][0], 1234) 

105 

106 def test_mask(self): 

107 """Test that masking against the CCD bounding box works as expected. 

108 """ 

109 ssAssocTask = SolarSystemAssociationTask() 

110 # Test will all inside ccd 

111 maskedObjects = ssAssocTask._maskToCcdRegion(self.testSsObjects, 

112 self.exposure.getBBox(), 

113 self.exposure.wcs, 

114 1.0) 

115 self.assertEqual(len(maskedObjects), len(self.testSsObjects)) 

116 

117 # Add a new SolarSystemObjects outside of the bbox and test that it 

118 # is excluded. 

119 testObjects = tb.vstack([self.testSsObjects[:1] for i in range(3)]) 

120 testObjects[0]["ra"] = 150 

121 testObjects[0]["dec"] = 80 

122 testObjects[1]["ra"] = 150 

123 testObjects[1]["dec"] = -80 

124 # Coordinates are chosen so that the inverse WCS erroneously maps them 

125 # to inside the box (to (74.5, 600.6) instead of around (1745, 600.6)). 

126 testObjects[2]["ra"] = 44.91215199831453 

127 testObjects[2]["dec"] = 45.001331943391406 

128 maskedObjects = ssAssocTask._maskToCcdRegion( 

129 tb.vstack([self.testSsObjects, testObjects]), 

130 self.exposure.getBBox(), 

131 self.exposure.wcs, 

132 1.0) 

133 self.assertEqual(len(maskedObjects), len(self.testSsObjects)) 

134 

135 

136class MemoryTester(lsst.utils.tests.MemoryTestCase): 

137 pass 

138 

139 

140def setup_module(module): 

141 lsst.utils.tests.init() 

142 

143 

144if __name__ == "__main__": 144 ↛ 145line 144 didn't jump to line 145 because the condition on line 144 was never true

145 lsst.utils.tests.init() 

146 unittest.main()