Coverage for tests/test_ssoAssociationTask.py: 26%

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 

23import pandas as pd 

24import unittest 

25 

26from lsst.ap.association.ssoAssociation import SolarSystemAssociationTask 

27import astshim as ast 

28import lsst.geom as geom 

29import lsst.afw.geom as afwGeom 

30import lsst.meas.base.tests as measTests 

31import lsst.utils.tests 

32 

33 

34class TestSolarSystemAssociation(unittest.TestCase): 

35 

36 def setUp(self): 

37 # Make fake sources 

38 self.nSources = 10 

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

40 geom.Extent2I(1024, 1153)) 

41 self.xyLoc = 100 

42 dataset = measTests.TestDataset(self.bbox) 

43 for srcIdx in range(self.nSources): 

44 dataset.addSource(100000.0, 

45 geom.Point2D(srcIdx*self.xyLoc, 

46 srcIdx*self.xyLoc)) 

47 schema = dataset.makeMinimalSchema() 

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

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

50 self.exposure, catalog = dataset.realize( 

51 10.0, schema, randomSeed=1234) 

52 for src in catalog: 

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

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

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

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

57 [1.0, 1, 1, 0], 

58 [1.0, 2, 0, 1], 

59 ]) 

60 self.exposure.setWcs(afwGeom.makeModifiedWcs( 

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

62 self.exposure.wcs, 

63 modifyActualPixels=False 

64 )) 

65 

66 # Convert to task required format 

67 self.testDiaSources = catalog.asAstropy().to_pandas() 

68 self.testDiaSources.rename(columns={"coord_ra": "ra", 

69 "coord_dec": "dec"}, 

70 inplace=True,) 

71 self.testDiaSources.loc[:, "ra"] = np.rad2deg(self.testDiaSources["ra"]) 

72 self.testDiaSources.loc[:, "dec"] = np.rad2deg(self.testDiaSources["dec"]) 

73 self.testDiaSources["ssObjectId"] = 0 

74 

75 # Grab a subset to treat as solar system objects 

76 self.testSsObjects = self.testDiaSources[2:8].reset_index() 

77 # Assign them ids starting from 1. 

78 self.testSsObjects.loc[:, "ssObjectId"] = np.arange( 

79 1, len(self.testSsObjects) + 1, dtype=int,) 

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

81 

82 def test_run(self): 

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

84 """ 

85 ssAssocTask = SolarSystemAssociationTask() 

86 results = ssAssocTask.run(self.testDiaSources, 

87 self.testSsObjects, 

88 self.exposure) 

89 self.assertEqual(self.nSources, 

90 len(results.ssoAssocDiaSources) 

91 + len(results.unAssocDiaSources)) 

92 self.assertEqual(len(self.testSsObjects), 

93 len(results.ssoAssocDiaSources)) 

94 self.assertEqual(self.nSources - len(self.testSsObjects), 

95 len(results.unAssocDiaSources)) 

96 for idx, ssObject in self.testSsObjects.iterrows(): 

97 self.assertEqual( 

98 ssObject["ssObjectId"], 

99 results.ssoAssocDiaSources.iloc[idx]["ssObjectId"]) 

100 

101 def test_mask(self): 

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

103 """ 

104 ssAssocTask = SolarSystemAssociationTask() 

105 # Test will all inside ccd 

106 maskedObjects = ssAssocTask._maskToCcdRegion(self.testSsObjects, 

107 self.exposure, 

108 1.0) 

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

110 

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

112 # is excluded. 

113 testObjects = self.testSsObjects.loc[:2].reset_index(drop=True) 

114 testObjects.loc[0, "ra"] = 150 

115 testObjects.loc[0, "dec"] = 80 

116 testObjects.loc[1, "ra"] = 150 

117 testObjects.loc[1, "dec"] = -80 

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

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

120 testObjects.loc[2, "ra"] = 44.91215199831453 

121 testObjects.loc[2, "dec"] = 45.001331943391406 

122 maskedObjects = ssAssocTask._maskToCcdRegion( 

123 pd.concat([self.testSsObjects, testObjects]), 

124 self.exposure, 

125 1.0) 

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

127 

128 

129class MemoryTester(lsst.utils.tests.MemoryTestCase): 

130 pass 

131 

132 

133def setup_module(module): 

134 lsst.utils.tests.init() 

135 

136 

137if __name__ == "__main__": 137 ↛ 138line 137 didn't jump to line 138, because the condition on line 137 was never true

138 lsst.utils.tests.init() 

139 unittest.main()