Coverage for tests/test_Q3cPixelization.py: 24%

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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 

29 

30try: 

31 import yaml 

32except ImportError: 

33 yaml = None 

34 

35import unittest 

36 

37from lsst.sphgeom import Angle, Circle, ConvexPolygon, Q3cPixelization, RangeSet, UnitVector3d 

38 

39 

40class Q3cPixelizationTestCase(unittest.TestCase): 

41 """Test Q3C pixelization.""" 

42 

43 def test_construction(self): 

44 with self.assertRaises(ValueError): 

45 Q3cPixelization(-1) 

46 with self.assertRaises(ValueError): 

47 Q3cPixelization(Q3cPixelization.MAX_LEVEL + 1) 

48 q1 = Q3cPixelization(0) 

49 self.assertEqual(q1.getLevel(), 0) 

50 q2 = Q3cPixelization(1) 

51 q3 = Q3cPixelization(q2) 

52 self.assertNotEqual(q1, q2) 

53 self.assertEqual(q2, q3) 

54 

55 def test_indexing(self): 

56 pixelization = Q3cPixelization(1) 

57 self.assertEqual(pixelization.index(UnitVector3d(0.5, -0.5, 1.0)), 0) 

58 

59 def test_pixel(self): 

60 h = Q3cPixelization(1) 

61 self.assertIsInstance(h.pixel(10), ConvexPolygon) 

62 

63 def test_envelope_and_interior(self): 

64 pixelization = Q3cPixelization(1) 

65 c = Circle(UnitVector3d(1.0, -0.5, -0.5), Angle.fromDegrees(0.1)) 

66 rs = pixelization.envelope(c) 

67 self.assertTrue(rs == RangeSet(4)) 

68 rs = pixelization.envelope(c, 1) 

69 self.assertTrue(rs == RangeSet(4)) 

70 self.assertTrue(rs.isWithin(pixelization.universe())) 

71 rs = pixelization.interior(c) 

72 self.assertTrue(rs.empty()) 

73 

74 def test_index_to_string(self): 

75 strings = ["+X", "+Y", "+Z", "-X", "-Y", "-Z"] 

76 for i in range(6): 

77 s = strings[i] 

78 components = [0.0] * 3 

79 components[i % 3] = 1.0 if i < 3 else -1.0 

80 v = UnitVector3d(*components) 

81 f = Q3cPixelization(0).index(v) 

82 self.assertEqual(Q3cPixelization(0).toString(f), s) 

83 for j in range(4): 

84 self.assertEqual(Q3cPixelization(1).toString(f * 4 + j), s + str(j)) 

85 

86 def test_string(self): 

87 p = Q3cPixelization(3) 

88 self.assertEqual(str(p), "Q3cPixelization(3)") 

89 self.assertEqual(str(p), repr(p)) 

90 self.assertEqual(p, eval(repr(p), {"Q3cPixelization": Q3cPixelization})) 

91 

92 def test_pickle(self): 

93 a = Q3cPixelization(20) 

94 b = pickle.loads(pickle.dumps(a)) 

95 self.assertEqual(a, b) 

96 

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

98 def test_yaml(self): 

99 a = Q3cPixelization(20) 

100 b = yaml.safe_load(yaml.dump(a)) 

101 self.assertEqual(a, b) 

102 

103 

104if __name__ == "__main__": 

105 unittest.main()