Coverage for colour/temperature/tests/test__init__.py: 100%

1"""Define the unit tests for the :mod:`colour.temperature` module.""" 

2 

3from __future__ import annotations 

4 

5import numpy as np 

6 

7from colour.constants import TOLERANCE_ABSOLUTE_TESTS 

8from colour.temperature import CCT_to_xy, xy_to_CCT 

9 

10__author__ = "Colour Developers" 

11__copyright__ = "Copyright 2013 Colour Developers" 

12__license__ = "BSD-3-Clause - https://opensource.org/licenses/BSD-3-Clause" 

13__maintainer__ = "Colour Developers" 

14__email__ = "colour-developers@colour-science.org" 

15__status__ = "Production" 

16 

17__all__ = [ 

18 "TestXy_to_CCT", 

19 "TestCCT_to_xy", 

20] 

21 

22 

23class TestXy_to_CCT: 

24 """ 

25 Define :func:`colour.temperature.xy_to_CCT` definition unit tests methods. 

26 """ 

27 

28 def test_xy_to_CCT(self) -> None: 

29 """Test :func:`colour.temperature.xy_to_CCT` definition.""" 

30 

31 xy = np.array([0.31270, 0.32900]) 

32 

33 # Test default method (CIE Illuminant D Series) 

34 np.testing.assert_allclose( 

35 xy_to_CCT(xy), 

36 6508.1175148, 

37 atol=0.01, 

38 ) 

39 

40 # Test Hernandez 1999 method 

41 np.testing.assert_allclose( 

42 xy_to_CCT(xy, "Hernandez 1999"), 

43 6500.7420431, 

44 atol=0.01, 

45 ) 

46 

47 # Test McCamy 1992 method 

48 np.testing.assert_allclose( 

49 xy_to_CCT(xy, "McCamy 1992"), 

50 6505.08059131, 

51 atol=0.01, 

52 ) 

53 

54 

55class TestCCT_to_xy: 

56 """ 

57 Define :func:`colour.temperature.CCT_to_xy` definition unit tests methods. 

58 """ 

59 

60 def test_CCT_to_xy(self) -> None: 

61 """Test :func:`colour.temperature.CCT_to_xy` definition.""" 

62 

63 # Test default method (CIE Illuminant D Series) 

64 np.testing.assert_allclose( 

65 CCT_to_xy(6500), 

66 np.array([0.31277888, 0.3291835]), 

67 atol=TOLERANCE_ABSOLUTE_TESTS, 

68 ) 

69 

70 # Test explicit CIE Illuminant D Series method 

71 np.testing.assert_allclose( 

72 CCT_to_xy(6500, method="CIE Illuminant D Series"), 

73 np.array([0.31277888, 0.3291835]), 

74 atol=TOLERANCE_ABSOLUTE_TESTS, 

75 ) 

76 

77 # Test Hernandez 1999 method 

78 np.testing.assert_allclose( 

79 CCT_to_xy(6500, "Hernandez 1999"), 

80 np.array([0.31191663, 0.33419]), 

81 atol=TOLERANCE_ABSOLUTE_TESTS, 

82 )