Coverage for tests/test_UnitVector3d.py: 22%

67 statements  

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1# 

2# LSST Data Management System 

3# See COPYRIGHT file at the top of the source tree. 

4# 

5# This product includes software developed by the 

6# LSST Project (http://www.lsst.org/). 

7# 

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

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

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

11# (at your option) any later version. 

12# 

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

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

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

16# GNU General Public License for more details. 

17# 

18# You should have received a copy of the LSST License Statement and 

19# the GNU General Public License along with this program. If not, 

20# see <https://www.lsstcorp.org/LegalNotices/>. 

21# 

22 

23import pickle 

24 

25import math 

26import unittest 

27 

28from lsst.sphgeom import Angle, LonLat, UnitVector3d, Vector3d 

29 

30 

31class UnitVector3dTestCase(unittest.TestCase): 

32 

33 def testConstruction(self): 

34 v = Vector3d(1, 1, 1) 

35 u = UnitVector3d.orthogonalTo(v) 

36 self.assertAlmostEqual(u.dot(v), 0.0, places=15) 

37 a = UnitVector3d(1, 1, 1) 

38 self.assertEqual(a, UnitVector3d(Vector3d(1, 1, 1))) 

39 self.assertAlmostEqual(a.x(), math.sqrt(3.0) / 3.0, places=15) 

40 self.assertAlmostEqual(a.y(), math.sqrt(3.0) / 3.0, places=15) 

41 self.assertAlmostEqual(a.z(), math.sqrt(3.0) / 3.0, places=15) 

42 b = UnitVector3d(Angle.fromDegrees(45), Angle.fromDegrees(45)) 

43 self.assertEqual(b, UnitVector3d(LonLat.fromDegrees(45, 45))) 

44 self.assertAlmostEqual(b.x(), 0.5, places=15) 

45 self.assertAlmostEqual(b.y(), 0.5, places=15) 

46 self.assertAlmostEqual(b.z(), 0.5 * math.sqrt(2.0), places=15) 

47 c = UnitVector3d.northFrom(b) 

48 d = UnitVector3d(LonLat.fromDegrees(225, 45)) 

49 self.assertAlmostEqual(c.x(), d.x(), places=15) 

50 self.assertAlmostEqual(c.y(), d.y(), places=15) 

51 self.assertAlmostEqual(c.z(), d.z(), places=15) 

52 

53 def testComparison(self): 

54 self.assertEqual(UnitVector3d.X(), UnitVector3d.X()) 

55 self.assertNotEqual(UnitVector3d.Y(), UnitVector3d.Z()) 

56 

57 def testAccess(self): 

58 v = UnitVector3d.X() 

59 self.assertEqual(len(v), 3) 

60 self.assertEqual(v[0], 1) 

61 self.assertEqual(v[1], 0) 

62 self.assertEqual(v[2], 0) 

63 self.assertEqual(v[-3], 1) 

64 self.assertEqual(v[-2], 0) 

65 self.assertEqual(v[-1], 0) 

66 with self.assertRaises(IndexError): 

67 v[-4] 

68 with self.assertRaises(IndexError): 

69 v[3] 

70 

71 def testDot(self): 

72 self.assertEqual(UnitVector3d.X().dot(UnitVector3d.Z()), 0) 

73 

74 def testCross(self): 

75 self.assertEqual(UnitVector3d.X().cross(UnitVector3d.Y()), 

76 Vector3d(0, 0, 1)) 

77 self.assertEqual(UnitVector3d.X().robustCross(UnitVector3d.Y()), 

78 Vector3d(0, 0, 2)) 

79 

80 def testArithmeticOperators(self): 

81 self.assertEqual(-UnitVector3d.X(), UnitVector3d(-1, 0, 0)) 

82 self.assertEqual(UnitVector3d.X() - UnitVector3d.X(), Vector3d(0, 0, 0)) 

83 self.assertEqual(UnitVector3d.X() + UnitVector3d(1, 0, 0), 

84 UnitVector3d.X() * 2) 

85 self.assertEqual(UnitVector3d.Y() - Vector3d(0, 0.5, 0), 

86 UnitVector3d.Y() / 2) 

87 self.assertEqual(UnitVector3d.Z().cwiseProduct(Vector3d(2, 3, 4)), 

88 Vector3d(0, 0, 4)) 

89 

90 def testRotation(self): 

91 v = UnitVector3d.Y().rotatedAround(UnitVector3d.X(), 

92 Angle(0.5 * math.pi)) 

93 self.assertAlmostEqual(v.x(), 0.0, places=15) 

94 self.assertAlmostEqual(v.y(), 0.0, places=15) 

95 self.assertAlmostEqual(v.z(), 1.0, places=15) 

96 

97 def testString(self): 

98 v = UnitVector3d.X() 

99 self.assertEqual(str(v), '[1.0, 0.0, 0.0]') 

100 self.assertEqual(repr(v), 'UnitVector3d(1.0, 0.0, 0.0)') 

101 self.assertEqual(v, eval(repr(v), dict(UnitVector3d=UnitVector3d))) 

102 

103 def testPickle(self): 

104 v = UnitVector3d(1, 1, 1) 

105 w = pickle.loads(pickle.dumps(v, pickle.HIGHEST_PROTOCOL)) 

106 self.assertEqual(v, w) 

107 

108 

109if __name__ == '__main__': 109 ↛ 110line 109 didn't jump to line 110, because the condition on line 109 was never true

110 unittest.main()