Coverage for tests/test_utils.py: 18%

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 os 

23import unittest 

24 

25import pandas as pd 

26 

27import lsst.daf.butler as dafButler 

28 

29from lsst.ap.association.utils import readSdmSchemaFile, make_empty_catalog, convertDataFrameToSdmSchema, \ 

30 getMidpointFromTimespan 

31from utils_tests import makeExposure, makeRegionTime 

32 

33 

34class TestUtils(unittest.TestCase): 

35 

36 def test_make_empty_catalog(self): 

37 """Check that an empty catalog has the correct format. 

38 """ 

39 schemaFile = os.path.join("${SDM_SCHEMAS_DIR}", "yml", "apdb.yaml") 

40 schemaName = "ApdbSchema" 

41 schema = readSdmSchemaFile(schemaFile, schemaName) 

42 

43 tableNames = ["DiaObject", "DiaSource", "DiaForcedSource"] 

44 for tableName in tableNames: 

45 emptyDiaObjects = make_empty_catalog(schema, tableName=tableName) 

46 self.assertTrue(emptyDiaObjects.empty) 

47 

48 emptyColumns = set(emptyDiaObjects.columns) 

49 self.assertIn("ra", emptyColumns) 

50 self.assertIn("dec", emptyColumns) 

51 self.assertIn("diaObjectId", emptyColumns) 

52 

53 emptyDf = pd.DataFrame(columns=["diaObjectId",]) 

54 emptyDf.set_index("diaObjectId") 

55 convertedEmptyDiaObjects = convertDataFrameToSdmSchema(schema, emptyDf, tableName=tableName) 

56 # TODO: we have no tests of convertDataFrameToSdmSchema, so it's dangerous to use it as an oracle. 

57 emptyTypes = dict(zip(emptyDiaObjects.columns, emptyDiaObjects.dtypes)) 

58 convertedEmptyTypes = dict(zip(convertedEmptyDiaObjects.columns, convertedEmptyDiaObjects.dtypes)) 

59 self.assertEqual(emptyTypes, convertedEmptyTypes) 

60 

61 def test_regionTime_timespan(self): 

62 """Check that the midpoint from a RegionTimeInfo matches the time from 

63 the visitInfo of the exposure. 

64 """ 

65 exposure = makeExposure() 

66 regionTime = makeRegionTime(exposure) 

67 visitTime = exposure.visitInfo.date.toAstropy() 

68 midpoint = getMidpointFromTimespan(regionTime.timespan) 

69 self.assertEqual(visitTime.jd, midpoint.jd) 

70 

71 def test_invalidTimespan(self): 

72 """Test the error handling of getMidpointFromTimespan. 

73 """ 

74 exposure = makeExposure() 

75 visitTime = exposure.visitInfo.date.toAstropy() 

76 timespan_no_end = dafButler.Timespan(begin=visitTime, end=dafButler.Timespan.EMPTY) 

77 timespan_no_begin = dafButler.Timespan(begin=dafButler.Timespan.EMPTY, end=visitTime) 

78 with self.assertRaises(ValueError): 

79 getMidpointFromTimespan(timespan_no_end) 

80 with self.assertRaises(ValueError): 

81 getMidpointFromTimespan(timespan_no_begin) 

82 

83 timespan_none_end = dafButler.Timespan(begin=visitTime, end=None) 

84 timespan_none_begin = dafButler.Timespan(begin=None, end=visitTime) 

85 with self.assertRaises(ValueError): 

86 getMidpointFromTimespan(timespan_none_end, allowUnbounded=False) 

87 with self.assertRaises(ValueError): 

88 getMidpointFromTimespan(timespan_none_begin, allowUnbounded=False) 

89 self.assertEqual(getMidpointFromTimespan(timespan_none_begin).jd, visitTime.jd) 

90 self.assertEqual(getMidpointFromTimespan(timespan_none_end).jd, visitTime.jd) 

91 

92 timespan_none_both = dafButler.Timespan(begin=None, end=None) 

93 with self.assertRaises(ValueError): 

94 getMidpointFromTimespan(timespan_none_both, allowUnbounded=True) 

95 with self.assertRaises(ValueError): 

96 getMidpointFromTimespan(timespan_none_both, allowUnbounded=False)