1 | #![allow (clippy::float_cmp)] |

2 | |

3 | **use** serde::{Deserialize, Serialize}; |

4 | **use** serde_json::Value; |

5 | |

6 | #[rustfmt::skip] *// appears to be a bug in rustfmt to make this converge...* |

7 | **macro_rules**! float_inf_tests { |

8 | ($ty:ty) => {{ |

9 | #[derive(Serialize, Deserialize)] |

10 | **struct** S { |

11 | sf1: $ty, |

12 | sf2: $ty, |

13 | sf3: $ty, |

14 | sf4: $ty, |

15 | sf5: $ty, |

16 | sf6: $ty, |

17 | sf7: $ty, |

18 | sf8: $ty, |

19 | } |

20 | **let** inf: S = basic_toml::from_str( |

21 | " |

22 | # infinity |

23 | sf1 = inf # positive infinity |

24 | sf2 = +inf # positive infinity |

25 | sf3 = -inf # negative infinity |

26 | |

27 | # not a number |

28 | sf4 = nan # actual sNaN/qNaN encoding is implementation specific |

29 | sf5 = +nan # same as `nan` |

30 | sf6 = -nan # valid, actual encoding is implementation specific |

31 | |

32 | # zero |

33 | sf7 = +0.0 |

34 | sf8 = -0.0 |

35 | " , |

36 | ) |

37 | .expect("Parse infinities." ); |

38 | |

39 | assert!(inf.sf1.is_infinite()); |

40 | assert!(inf.sf1.is_sign_positive()); |

41 | assert!(inf.sf2.is_infinite()); |

42 | assert!(inf.sf2.is_sign_positive()); |

43 | assert!(inf.sf3.is_infinite()); |

44 | assert!(inf.sf3.is_sign_negative()); |

45 | |

46 | assert!(inf.sf4.is_nan()); |

47 | assert!(inf.sf4.is_sign_positive()); |

48 | assert!(inf.sf5.is_nan()); |

49 | assert!(inf.sf5.is_sign_positive()); |

50 | assert!(inf.sf6.is_nan()); |

51 | assert!(inf.sf6.is_sign_negative()); *// NOTE: but serializes to just `nan`* |

52 | |

53 | assert_eq!(inf.sf7, `0.0`); |

54 | assert!(inf.sf7.is_sign_positive()); |

55 | assert_eq!(inf.sf8, `0.0`); |

56 | assert!(inf.sf8.is_sign_negative()); |

57 | |

58 | **let** s = basic_toml::to_string(&inf).unwrap(); |

59 | assert_eq!( |

60 | s, |

61 | "\ |

62 | sf1 = inf |

63 | sf2 = inf |

64 | sf3 = -inf |

65 | sf4 = nan |

66 | sf5 = nan |

67 | sf6 = nan |

68 | sf7 = 0.0 |

69 | sf8 = -0.0 |

70 | " |

71 | ); |

72 | |

73 | basic_toml::from_str::<Value>(&s).expect("roundtrip" ); |

74 | }}; |

75 | } |

76 | |

77 | #[test] |

78 | **fn** float_inf() { |

79 | float_inf_tests!(**f32**); |

80 | float_inf_tests!(**f64**); |

81 | } |

82 | |