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 

24try: 

25 import yaml 

26except ImportError: 

27 yaml = None 

28 

29import math 

30import unittest 

31 

32from lsst.sphgeom import (Angle, CONTAINS, Circle, Ellipse, Region, 

33 UnitVector3d, WITHIN) 

34 

35 

36class EllipseTestCase(unittest.TestCase): 

37 

38 def test_construction(self): 

39 self.assertTrue(Ellipse.empty().isEmpty()) 

40 self.assertTrue(Ellipse().isEmpty()) 

41 self.assertTrue(Ellipse.full().isFull()) 

42 e = Ellipse(Circle(UnitVector3d.X(), Angle(math.pi / 2))) 

43 f = Ellipse(UnitVector3d.X(), Angle(math.pi / 2)) 

44 self.assertEqual(e, f) 

45 self.assertEqual(e.getAlpha(), e.getBeta()) 

46 self.assertTrue(e.isCircle()) 

47 self.assertTrue(e.isGreatCircle()) 

48 g = Ellipse(e) 

49 h = e.clone() 

50 self.assertEqual(e, g) 

51 self.assertEqual(g, h) 

52 self.assertNotEqual(id(e), id(g)) 

53 self.assertNotEqual(id(g), id(h)) 

54 

55 def test_comparison_operators(self): 

56 e = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3)) 

57 f = Ellipse(UnitVector3d.X(), 

58 Angle(math.pi / 3), Angle(math.pi / 6), Angle(0)) 

59 self.assertEqual(e, e) 

60 self.assertNotEqual(e, f) 

61 

62 def test_center_and_dimensions(self): 

63 e = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3)) 

64 self.assertAlmostEqual(e.getF1().dot(UnitVector3d.X()), 1.0) 

65 self.assertAlmostEqual(e.getF2().dot(UnitVector3d.Y()), 1.0) 

66 self.assertAlmostEqual(e.getAlpha(), Angle(2 * math.pi / 3)) 

67 f = Ellipse(UnitVector3d.X(), 

68 Angle(math.pi / 3), Angle(math.pi / 6), Angle(0)) 

69 self.assertEqual(f.getCenter(), UnitVector3d.X()) 

70 

71 def test_relationships(self): 

72 e = Ellipse(UnitVector3d.X(), 

73 Angle(math.pi / 3), Angle(math.pi / 6), Angle(0)) 

74 self.assertTrue(e.contains(UnitVector3d.X())) 

75 self.assertTrue(UnitVector3d.X() in e) 

76 c = Circle(UnitVector3d.X(), Angle(math.pi / 2)) 

77 self.assertEqual(c.relate(e), CONTAINS) 

78 self.assertEqual(e.relate(c), WITHIN) 

79 

80 def test_complement(self): 

81 e = Ellipse(UnitVector3d.X(), 

82 Angle(math.pi / 3), Angle(math.pi / 6), Angle(0)) 

83 f = e.complemented().complement() 

84 self.assertEqual(e, f) 

85 

86 def test_codec(self): 

87 e = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3)) 

88 s = e.encode() 

89 self.assertEqual(Ellipse.decode(s), e) 

90 self.assertEqual(Region.decode(s), e) 

91 

92 def test_string(self): 

93 c = Ellipse(UnitVector3d.Z(), Angle(1.0)) 

94 self.assertEqual(str(c), 

95 'Ellipse([0.0, 0.0, 1.0], [0.0, 0.0, 1.0], 1.0)') 

96 self.assertEqual(repr(c), 

97 'Ellipse(UnitVector3d(0.0, 0.0, 1.0), ' 

98 'UnitVector3d(0.0, 0.0, 1.0), Angle(1.0))') 

99 self.assertEqual(c, eval(repr(c), dict( 

100 Angle=Angle, Ellipse=Ellipse, UnitVector3d=UnitVector3d))) 

101 

102 def test_pickle(self): 

103 a = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3)) 

104 b = pickle.loads(pickle.dumps(a, pickle.HIGHEST_PROTOCOL)) 

105 self.assertEqual(a, b) 

106 

107 @unittest.skipIf(not yaml, "YAML module can not be imported") 

108 def test_yaml(self): 

109 a = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3)) 

110 b = yaml.safe_load(yaml.dump(a)) 

111 self.assertEqual(a, b) 

112 

113 

114if __name__ == '__main__': 114 ↛ 115line 114 didn't jump to line 115, because the condition on line 114 was never true

115 unittest.main()