Coverage for tests/test_expressions.py: 38%

Shortcuts on this page

r m x p   toggle line displays

j k   next/prev highlighted chunk

0   (zero) top of page

1   (one) first highlighted chunk

46 statements  

1# This file is part of daf_butler. 

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 unittest 

23 

24from lsst.daf.butler import DimensionUniverse 

25from lsst.daf.butler.core import NamedKeyDict, TimespanDatabaseRepresentation 

26from lsst.daf.butler.registry.queries._structs import QueryColumns 

27from lsst.daf.butler.registry.queries.expressions import ParserYacc, convertExpressionToSql 

28from sqlalchemy.dialects import postgresql, sqlite 

29from sqlalchemy.schema import Column 

30 

31 

32class FakeDatasetRecordStorageManager: 

33 ingestDate = Column("ingest_date") 

34 

35 

36class ConvertExpressionToSqlTestCase(unittest.TestCase): 

37 """A test case for convertExpressionToSql method""" 

38 

39 def setUp(self): 

40 self.universe = DimensionUniverse() 

41 

42 def test_simple(self): 

43 """Test with a trivial expression""" 

44 

45 parser = ParserYacc() 

46 tree = parser.parse("1 > 0") 

47 self.assertIsNotNone(tree) 

48 

49 columns = QueryColumns() 

50 elements = NamedKeyDict() 

51 column_element = convertExpressionToSql( 

52 tree, self.universe, columns, elements, {}, TimespanDatabaseRepresentation.Compound 

53 ) 

54 self.assertEqual(str(column_element.compile()), ":param_1 > :param_2") 

55 self.assertEqual(str(column_element.compile(compile_kwargs={"literal_binds": True})), "1 > 0") 

56 

57 def test_time(self): 

58 """Test with a trivial expression including times""" 

59 

60 parser = ParserYacc() 

61 tree = parser.parse("T'1970-01-01 00:00/tai' < T'2020-01-01 00:00/tai'") 

62 self.assertIsNotNone(tree) 

63 

64 columns = QueryColumns() 

65 elements = NamedKeyDict() 

66 column_element = convertExpressionToSql( 

67 tree, self.universe, columns, elements, {}, TimespanDatabaseRepresentation.Compound 

68 ) 

69 self.assertEqual(str(column_element.compile()), ":param_1 < :param_2") 

70 self.assertEqual( 

71 str(column_element.compile(compile_kwargs={"literal_binds": True})), "0 < 1577836800000000000" 

72 ) 

73 

74 def test_ingest_date(self): 

75 """Test with an expression including ingest_date which is native UTC""" 

76 

77 parser = ParserYacc() 

78 tree = parser.parse("ingest_date < T'2020-01-01 00:00/utc'") 

79 self.assertIsNotNone(tree) 

80 

81 columns = QueryColumns() 

82 columns.datasets = FakeDatasetRecordStorageManager() 

83 elements = NamedKeyDict() 

84 column_element = convertExpressionToSql( 

85 tree, self.universe, columns, elements, {}, TimespanDatabaseRepresentation.Compound 

86 ) 

87 

88 # render it, needs specific dialect to convert column to expression 

89 dialect = postgresql.dialect() 

90 self.assertEqual(str(column_element.compile(dialect=dialect)), "ingest_date < TIMESTAMP %(param_1)s") 

91 self.assertEqual( 

92 str(column_element.compile(dialect=dialect, compile_kwargs={"literal_binds": True})), 

93 "ingest_date < TIMESTAMP '2020-01-01 00:00:00.000000'", 

94 ) 

95 

96 dialect = sqlite.dialect() 

97 self.assertEqual(str(column_element.compile(dialect=dialect)), "datetime(ingest_date) < datetime(?)") 

98 self.assertEqual( 

99 str(column_element.compile(dialect=dialect, compile_kwargs={"literal_binds": True})), 

100 "datetime(ingest_date) < datetime('2020-01-01 00:00:00.000000')", 

101 ) 

102 

103 

104if __name__ == "__main__": 104 ↛ 105line 104 didn't jump to line 105, because the condition on line 104 was never true

105 unittest.main()