jiq 3.22.1

Interactive JSON query tool with real-time output
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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163

use super::*;
use proptest::prelude::*;

mod char_pos_to_byte_pos {
    use super::*;

    #[test]
    fn empty_string_zero_returns_zero() {
        assert_eq!(char_pos_to_byte_pos("", 0), 0);
    }

    #[test]
    fn empty_string_past_end_returns_zero() {
        assert_eq!(char_pos_to_byte_pos("", 5), 0);
    }

    #[test]
    fn ascii_matches_char_index() {
        let s = "hello";
        assert_eq!(char_pos_to_byte_pos(s, 0), 0);
        assert_eq!(char_pos_to_byte_pos(s, 1), 1);
        assert_eq!(char_pos_to_byte_pos(s, 5), 5);
    }

    #[test]
    fn ascii_past_end_returns_byte_len() {
        assert_eq!(char_pos_to_byte_pos("hello", 10), 5);
    }

    #[test]
    fn two_byte_chars() {
        let s = "café";
        assert_eq!(char_pos_to_byte_pos(s, 0), 0);
        assert_eq!(char_pos_to_byte_pos(s, 3), 3);
        assert_eq!(char_pos_to_byte_pos(s, 4), 5);
        assert_eq!(char_pos_to_byte_pos(s, 5), 5);
    }

    #[test]
    fn three_byte_chars() {
        let s = "中文";
        assert_eq!(char_pos_to_byte_pos(s, 0), 0);
        assert_eq!(char_pos_to_byte_pos(s, 1), 3);
        assert_eq!(char_pos_to_byte_pos(s, 2), 6);
    }

    #[test]
    fn four_byte_chars() {
        let s = "👋🎉";
        assert_eq!(char_pos_to_byte_pos(s, 0), 0);
        assert_eq!(char_pos_to_byte_pos(s, 1), 4);
        assert_eq!(char_pos_to_byte_pos(s, 2), 8);
    }

    #[test]
    fn mixed_multibyte() {
        let s = "a中b👋c";
        assert_eq!(char_pos_to_byte_pos(s, 0), 0);
        assert_eq!(char_pos_to_byte_pos(s, 1), 1);
        assert_eq!(char_pos_to_byte_pos(s, 2), 4);
        assert_eq!(char_pos_to_byte_pos(s, 3), 5);
        assert_eq!(char_pos_to_byte_pos(s, 4), 9);
        assert_eq!(char_pos_to_byte_pos(s, 5), 10);
    }
}

mod byte_pos_to_char_pos {
    use super::*;

    #[test]
    fn empty_string_zero_returns_zero() {
        assert_eq!(byte_pos_to_char_pos("", 0), 0);
    }

    #[test]
    fn empty_string_past_end_returns_zero() {
        assert_eq!(byte_pos_to_char_pos("", 5), 0);
    }

    #[test]
    fn ascii_matches_byte_index() {
        let s = "hello";
        assert_eq!(byte_pos_to_char_pos(s, 0), 0);
        assert_eq!(byte_pos_to_char_pos(s, 3), 3);
        assert_eq!(byte_pos_to_char_pos(s, 5), 5);
    }

    #[test]
    fn ascii_past_end_returns_char_count() {
        assert_eq!(byte_pos_to_char_pos("hello", 100), 5);
    }

    #[test]
    fn two_byte_chars() {
        let s = "café";
        assert_eq!(byte_pos_to_char_pos(s, 0), 0);
        assert_eq!(byte_pos_to_char_pos(s, 3), 3);
        assert_eq!(byte_pos_to_char_pos(s, 5), 4);
    }

    #[test]
    fn three_byte_chars() {
        let s = "中文";
        assert_eq!(byte_pos_to_char_pos(s, 0), 0);
        assert_eq!(byte_pos_to_char_pos(s, 3), 1);
        assert_eq!(byte_pos_to_char_pos(s, 6), 2);
    }

    #[test]
    fn four_byte_chars() {
        let s = "👋🎉";
        assert_eq!(byte_pos_to_char_pos(s, 0), 0);
        assert_eq!(byte_pos_to_char_pos(s, 4), 1);
        assert_eq!(byte_pos_to_char_pos(s, 8), 2);
    }

    #[test]
    fn byte_inside_multibyte_char_rounds_to_next_boundary() {
        let s = "中";
        assert_eq!(byte_pos_to_char_pos(s, 1), 1);
        assert_eq!(byte_pos_to_char_pos(s, 2), 1);
    }

    #[test]
    fn mixed_multibyte() {
        let s = "a中b👋c";
        assert_eq!(byte_pos_to_char_pos(s, 0), 0);
        assert_eq!(byte_pos_to_char_pos(s, 1), 1);
        assert_eq!(byte_pos_to_char_pos(s, 4), 2);
        assert_eq!(byte_pos_to_char_pos(s, 5), 3);
        assert_eq!(byte_pos_to_char_pos(s, 9), 4);
        assert_eq!(byte_pos_to_char_pos(s, 10), 5);
    }
}

proptest! {
    #[test]
    fn prop_roundtrip_through_byte(s in "\\PC{0,50}", char_pos in 0usize..60) {
        let byte_pos = char_pos_to_byte_pos(&s, char_pos);
        let back = byte_pos_to_char_pos(&s, byte_pos);
        let char_count = s.chars().count();
        prop_assert_eq!(back, char_pos.min(char_count));
    }

    #[test]
    fn prop_char_pos_result_is_byte_boundary(s in "\\PC{0,50}", char_pos in 0usize..60) {
        let byte_pos = char_pos_to_byte_pos(&s, char_pos);
        prop_assert!(s.is_char_boundary(byte_pos));
    }

    #[test]
    fn prop_slice_at_result_never_panics(s in "\\PC{0,50}", char_pos in 0usize..60) {
        let byte_pos = char_pos_to_byte_pos(&s, char_pos);
        let _ = &s[..byte_pos];
        let _ = &s[byte_pos..];
    }

    #[test]
    fn prop_byte_to_char_bounded_by_char_count(s in "\\PC{0,50}", byte_pos in 0usize..200) {
        let char_pos = byte_pos_to_char_pos(&s, byte_pos);
        prop_assert!(char_pos <= s.chars().count());
    }
}