Coverage for tests/test_Interval1d.py: 20%

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1# This file is part of sphgeom. 

2# 

3# Developed for the LSST Data Management System. 

4# This product includes software developed by the LSST Project 

5# (http://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 software is dual licensed under the GNU General Public License and also 

10# under a 3-clause BSD license. Recipients may choose which of these licenses 

11# to use; please see the files gpl-3.0.txt and/or bsd_license.txt, 

12# respectively. If you choose the GPL option then the following text applies 

13# (but note that there is still no warranty even if you opt for BSD instead): 

14# 

15# This program is free software: you can redistribute it and/or modify 

16# it under the terms of the GNU General Public License as published by 

17# the Free Software Foundation, either version 3 of the License, or 

18# (at your option) any later version. 

19# 

20# This program is distributed in the hope that it will be useful, 

21# but WITHOUT ANY WARRANTY; without even the implied warranty of 

22# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

23# GNU General Public License for more details. 

24# 

25# You should have received a copy of the GNU General Public License 

26# along with this program. If not, see <http://www.gnu.org/licenses/>. 

27 

28import pickle 

29import unittest 

30 

31from lsst.sphgeom import CONTAINS, DISJOINT, Interval1d 

32 

33 

34class Interval1dTestCase(unittest.TestCase): 

35 """Test 1D intervals.""" 

36 

37 def testConstruction(self): 

38 i = Interval1d(1) 

39 self.assertEqual(i.getA(), i.getB()) 

40 self.assertEqual(i.getA(), 1) 

41 i = Interval1d(1, 2) 

42 self.assertEqual(i, Interval1d(1, 2)) 

43 self.assertTrue(Interval1d.empty().isEmpty()) 

44 

45 def testComparisonOperators(self): 

46 self.assertEqual(Interval1d(1), Interval1d(1, 1)) 

47 self.assertEqual(Interval1d(1), 1) 

48 self.assertNotEqual(Interval1d(1, 1), Interval1d(2, 2)) 

49 self.assertNotEqual(Interval1d(2, 2), 1) 

50 

51 def testCenterAndSize(self): 

52 i = Interval1d(1, 2) 

53 self.assertEqual(i.getSize(), 1) 

54 self.assertEqual(i.getCenter(), 1.5) 

55 

56 def testRelationships(self): 

57 i02 = Interval1d(0, 2) 

58 i13 = Interval1d(1, 3) 

59 i46 = Interval1d(4, 6) 

60 i06 = Interval1d(0, 6) 

61 self.assertTrue(i02.contains(1)) 

62 self.assertTrue(i02.contains(Interval1d(0.5, 1.5))) 

63 self.assertTrue(i02.isDisjointFrom(3)) 

64 self.assertTrue(i02.isDisjointFrom(i46)) 

65 self.assertTrue(i02.intersects(1)) 

66 self.assertTrue(i02.intersects(i13)) 

67 self.assertTrue(Interval1d(1, 1).isWithin(i02)) 

68 self.assertTrue(i02.isWithin(i06)) 

69 r = i02.relate(1) 

70 self.assertEqual(r, CONTAINS) 

71 r = i46.relate(i02) 

72 self.assertEqual(r, DISJOINT) 

73 

74 def testExpandingAndClipping(self): 

75 a = Interval1d(1, 2) 

76 b = a.expandedTo(3).expandedTo(Interval1d(2, 4)).clippedTo(Interval1d(0, 2)).clippedTo(1) 

77 a.expandTo(3).expandTo(Interval1d(2, 4)) 

78 a.clipTo(Interval1d(0, 2)).clipTo(1) 

79 self.assertEqual(a, b) 

80 self.assertEqual(a, 1) 

81 

82 def testDilationAndErosion(self): 

83 a = Interval1d(1, 3) 

84 b = a.dilatedBy(1).erodedBy(2) 

85 a.dilateBy(1).erodeBy(2) 

86 self.assertEqual(a, b) 

87 self.assertEqual(a, 2) 

88 

89 def testString(self): 

90 i = Interval1d(1, 2) 

91 self.assertEqual(str(i), "[1.0, 2.0]") 

92 self.assertEqual(repr(i), "Interval1d(1.0, 2.0)") 

93 self.assertEqual(i, eval(repr(i), {"Interval1d": Interval1d})) 

94 

95 def testPickle(self): 

96 a = Interval1d(1.5, 3.5) 

97 b = pickle.loads(pickle.dumps(a)) 

98 self.assertEqual(a, b) 

99 

100 

101if __name__ == "__main__": 

102 unittest.main()