Coverage for tests/test_HtmPixelization.py: 22%

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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, HtmPixelization, RangeSet, UnitVector3d 

38 

39 

40class HtmPixelizationTestCase(unittest.TestCase): 

41 """Test HTM pixels.""" 

42 

43 def test_construction(self): 

44 with self.assertRaises(ValueError): 

45 HtmPixelization(-1) 

46 with self.assertRaises(ValueError): 

47 HtmPixelization(HtmPixelization.MAX_LEVEL + 1) 

48 h1 = HtmPixelization(0) 

49 self.assertEqual(h1.getLevel(), 0) 

50 h2 = HtmPixelization(1) 

51 h3 = HtmPixelization(h2) 

52 self.assertNotEqual(h1, h2) 

53 self.assertEqual(h2, h3) 

54 

55 def test_indexing(self): 

56 h = HtmPixelization(1) 

57 self.assertEqual(h.index(UnitVector3d(1, 1, 1)), 63) 

58 

59 def test_pixel(self): 

60 h = HtmPixelization(1) 

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

62 

63 def test_level(self): 

64 for index in (0, 16 * 4**HtmPixelization.MAX_LEVEL): 

65 self.assertEqual(HtmPixelization.level(index), -1) 

66 for level in range(HtmPixelization.MAX_LEVEL + 1): 

67 for root in range(8, 16): 

68 self.assertEqual(HtmPixelization.level(root * 4**level), level) 

69 

70 def test_envelope_and_interior(self): 

71 pixelization = HtmPixelization(3) 

72 c = Circle(UnitVector3d(1, 1, 1), Angle.fromDegrees(0.1)) 

73 rs = pixelization.envelope(c) 

74 self.assertTrue(rs == RangeSet(0x3FF)) 

75 rs = pixelization.envelope(c, 1) 

76 self.assertTrue(rs == RangeSet(0x3FF)) 

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

78 rs = pixelization.interior(c) 

79 self.assertTrue(rs.empty()) 

80 

81 def test_index_to_string(self): 

82 strings = ["S0", "S1", "S2", "S3", "N0", "N1", "N2", "N3"] 

83 for i in range(8, 16): 

84 s0 = strings[i - 8] 

85 self.assertEqual(HtmPixelization.asString(i), s0) 

86 self.assertEqual(HtmPixelization(0).toString(i), s0) 

87 for j in range(4): 

88 s1 = s0 + str(j) 

89 self.assertEqual(HtmPixelization.asString(i * 4 + j), s1) 

90 self.assertEqual(HtmPixelization(1).asString(i * 4 + j), s1) 

91 

92 def test_string(self): 

93 p = HtmPixelization(3) 

94 self.assertEqual(str(p), "HtmPixelization(3)") 

95 self.assertEqual(str(p), repr(p)) 

96 self.assertEqual(p, eval(repr(p), {"HtmPixelization": HtmPixelization})) 

97 

98 def test_pickle(self): 

99 a = HtmPixelization(20) 

100 b = pickle.loads(pickle.dumps(a)) 

101 self.assertEqual(a, b) 

102 

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

104 def test_yaml(self): 

105 a = HtmPixelization(20) 

106 b = yaml.safe_load(yaml.dump(a)) 

107 self.assertEqual(a, b) 

108 

109 

110if __name__ == "__main__": 

111 unittest.main()