Coverage for tests/test_Vector3d.py: 21%

72 statements  

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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 math 

29import pickle 

30import unittest 

31 

32from lsst.sphgeom import Angle, UnitVector3d, Vector3d 

33 

34 

35class Vector3dTestCase(unittest.TestCase): 

36 """Test 3D vector.""" 

37 

38 def testConstruction(self): 

39 v = Vector3d(1, 2, 3) 

40 self.assertEqual(v.x(), 1) 

41 self.assertEqual(v.y(), 2) 

42 self.assertEqual(v.z(), 3) 

43 

44 def testComparison(self): 

45 v = Vector3d(1, 2, 3) 

46 self.assertEqual(v, Vector3d(1, 2, 3)) 

47 self.assertNotEqual(v, Vector3d(1, 2, 4)) 

48 

49 def testIsZero(self): 

50 self.assertTrue(Vector3d(0, 0, 0).isZero()) 

51 self.assertFalse(Vector3d(0, 0, 1).isZero()) 

52 

53 def testAccess(self): 

54 v = Vector3d(1, 2, 3) 

55 self.assertEqual(len(v), 3) 

56 self.assertEqual(v[0], 1) 

57 self.assertEqual(v[1], 2) 

58 self.assertEqual(v[2], 3) 

59 self.assertEqual(v[-3], 1) 

60 self.assertEqual(v[-2], 2) 

61 self.assertEqual(v[-1], 3) 

62 with self.assertRaises(IndexError): 

63 v[-4] 

64 with self.assertRaises(IndexError): 

65 v[3] 

66 

67 def testNormal(self): 

68 v = Vector3d(0, 2, 0) 

69 self.assertEqual(v.getSquaredNorm(), 4) 

70 self.assertEqual(v.getNorm(), 2) 

71 v.normalize() 

72 self.assertTrue(v.isNormalized()) 

73 self.assertEqual(v, Vector3d(0, 1, 0)) 

74 

75 def testDot(self): 

76 x = Vector3d(1, 0, 0) 

77 y = Vector3d(0, 1, 0) 

78 self.assertEqual(x.dot(y), 0) 

79 

80 def testCross(self): 

81 x = Vector3d(1, 0, 0) 

82 y = Vector3d(0, 1, 0) 

83 self.assertEqual(x.cross(y), Vector3d(0, 0, 1)) 

84 

85 def testArithmeticOperators(self): 

86 self.assertEqual(-Vector3d(1, 1, 1), Vector3d(-1, -1, -1)) 

87 self.assertEqual(Vector3d(1, 1, 1) * 2, Vector3d(2, 2, 2)) 

88 self.assertEqual(Vector3d(2, 2, 2) / 2, Vector3d(1, 1, 1)) 

89 self.assertEqual(Vector3d(1, 1, 1) + Vector3d(1, 1, 1), Vector3d(2, 2, 2)) 

90 self.assertEqual(Vector3d(1, 1, 1) - Vector3d(1, 1, 1), Vector3d()) 

91 v = Vector3d(1, 1, 1) 

92 v += Vector3d(3, 3, 3) 

93 v -= Vector3d(2, 2, 2) 

94 v *= 2.0 

95 v /= 4.0 

96 self.assertEqual(v, Vector3d(1, 1, 1)) 

97 self.assertEqual(v.cwiseProduct(Vector3d(2, 3, 4)), Vector3d(2, 3, 4)) 

98 

99 def testRotation(self): 

100 v = Vector3d(0, 1, 0).rotatedAround(UnitVector3d.X(), Angle(0.5 * math.pi)) 

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

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

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

104 

105 def testString(self): 

106 v = Vector3d(1, 0, 0) 

107 self.assertEqual(str(v), "[1.0, 0.0, 0.0]") 

108 self.assertEqual(repr(v), "Vector3d(1.0, 0.0, 0.0)") 

109 self.assertEqual(v, eval(repr(v), {"Vector3d": Vector3d})) 

110 

111 def testPickle(self): 

112 v = Vector3d(1, 2, 3) 

113 w = pickle.loads(pickle.dumps(v)) 

114 self.assertEqual(v, w) 

115 

116 

117if __name__ == "__main__": 

118 unittest.main()