calc_rational 3.1.0

CLI calculator for rational numbers.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129

use super::Cache;
#[test]
fn len() {
    let mut c = Cache::<bool, 1>::new();
    assert_eq!(0, c.len());
    c.push(false);
    assert_eq!(1, c.len());
    c.push(false);
    assert_eq!(1, c.len());
}
#[test]
fn is_empty() {
    let mut c = Cache::<bool, 1>::new();
    assert!(c.is_empty());
    c.push(false);
    assert!(!c.is_empty());
}
#[expect(clippy::cognitive_complexity, reason = "a lot to test")]
#[test]
fn get() {
    let mut c = Cache::<bool, 4>::new();
    assert_eq!(c.get(0), None);
    assert_eq!(c.get(1), None);
    assert_eq!(c.get(2), None);
    assert_eq!(c.get(3), None);
    assert_eq!(c.get(4), None);
    assert_eq!(c.get(5), None);
    assert_eq!(c.get(usize::MAX), None);
    c.push(true);
    assert_eq!(c.get(0), Some(&true));
    assert_eq!(c.get(1), None);
    assert_eq!(c.get(2), None);
    assert_eq!(c.get(3), None);
    assert_eq!(c.get(4), None);
    assert_eq!(c.get(5), None);
    assert_eq!(c.get(usize::MAX), None);
    c.push(false);
    assert_eq!(c.get(0), Some(&false));
    assert_eq!(c.get(1), Some(&true));
    assert_eq!(c.get(2), None);
    assert_eq!(c.get(3), None);
    assert_eq!(c.get(4), None);
    assert_eq!(c.get(5), None);
    assert_eq!(c.get(usize::MAX), None);
    c.push(false);
    assert_eq!(c.get(0), Some(&false));
    assert_eq!(c.get(1), Some(&false));
    assert_eq!(c.get(2), Some(&true));
    assert_eq!(c.get(3), None);
    assert_eq!(c.get(4), None);
    assert_eq!(c.get(5), None);
    assert_eq!(c.get(usize::MAX), None);
    c.push(true);
    assert_eq!(c.get(0), Some(&true));
    assert_eq!(c.get(1), Some(&false));
    assert_eq!(c.get(2), Some(&false));
    assert_eq!(c.get(3), Some(&true));
    assert_eq!(c.get(4), None);
    assert_eq!(c.get(5), None);
    assert_eq!(c.get(usize::MAX), None);
    c.push(true);
    assert_eq!(c.get(0), Some(&true));
    assert_eq!(c.get(1), Some(&true));
    assert_eq!(c.get(2), Some(&false));
    assert_eq!(c.get(3), Some(&false));
    assert_eq!(c.get(4), None);
    assert_eq!(c.get(5), None);
    assert_eq!(c.get(usize::MAX), None);
}
#[test]
fn get_unsafe() {
    let mut c = Cache::<bool, 4>::new();
    assert!(!c.get_unchecked(0));
    assert!(!c.get_unchecked(1));
    assert!(!c.get_unchecked(2));
    assert!(!c.get_unchecked(3));
    assert!(!c.get_unchecked(4));
    c.push(true);
    assert!(c.get_unchecked(0));
    assert!(!c.get_unchecked(1));
    assert!(!c.get_unchecked(2));
    assert!(!c.get_unchecked(3));
    assert!(c.get_unchecked(4));
}
#[expect(clippy::indexing_slicing, reason = "comment justifies correctness")]
#[test]
fn index() {
    let mut c = Cache::<bool, 4>::new();
    c.push(true);
    // `c.len() > 0`.
    assert!(c[0]);
}
#[expect(clippy::indexing_slicing, reason = "comment justifies correctness")]
#[test]
#[should_panic(expected = "called `Option::unwrap()` on a `None` value")]
fn index_panic() {
    let c = Cache::<bool, 4>::new();
    // `c.len() > 0`.
    assert!(c[0]);
}
#[expect(clippy::indexing_slicing, reason = "comments justify correctness")]
#[test]
fn push() {
    let mut c = Cache::<bool, 4>::new();
    c.push(true);
    // `c.len() > 0`.
    assert!(c[0]);
    c.push(true);
    // `c.len() > 0`.
    assert!(c[0]);
    c.push(false);
    // `c.len() > 0`.
    assert!(!c[0]);
    c.push(true);
    // `c.len() > 0`.
    assert!(c[0]);
    c.push(false);
    // `c.len() > 0`.
    assert!(!c[0]);
    c.push(false);
    // `c.len() > 0`.
    assert!(!c[0]);
}
#[test]
fn new() {
    _ = Cache::<bool, 0>::new();
    _ = Cache::<bool, 32>::new();
    _ = Cache::<bool, 31>::new();
}