jsonrepair 0.1.0

Fast, low-dependency JSON repair for Rust. Turns 'almost JSON' into valid JSON; supports streaming and writer-based output.
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

use super::*;

fn opts() -> Options {
    Options::default()
}

fn run_streaming_collect(input: &str, opts: Options) -> String {
    let mut r = crate::StreamRepairer::new(opts);
    let sizes = super::lcg_sizes(98765, input.chars().count());
    let parts = super::chunk_by_char(input, &sizes);
    let mut outs = String::new();
    for p in parts.iter() {
        if let Some(s) = r.push(p).unwrap() {
            outs.push_str(&s);
        }
    }
    if let Some(tail) = r.flush().unwrap() {
        outs.push_str(&tail);
    }
    outs
}

#[test]
fn fuzz_array_unicode_comments_concat() {
    let input = "[ '你'/*x*/+'好', //c\n 'a'+'b', /*m*/ 1, 2 ]";
    let o = opts();
    let ns = crate::repair_to_string(input, &o).unwrap();
    let st = run_streaming_collect(input, o);
    let v1: serde_json::Value = serde_json::from_str(&ns).unwrap();
    let v2: serde_json::Value = serde_json::from_str(&st).unwrap();
    assert_eq!(v1, v2);
}

#[test]
fn fuzz_object_many_spaces_newlines_and_comments() {
    let input = "{ a: 'x' + 'y' /*c*/ , \n\n b: /re+/ , \r\n c: 1, d: 2 }";
    let o = opts();
    let ns = crate::repair_to_string(input, &o).unwrap();
    let st = run_streaming_collect(input, o);
    let v1: serde_json::Value = serde_json::from_str(&ns).unwrap();
    let v2: serde_json::Value = serde_json::from_str(&st).unwrap();
    assert_eq!(v1, v2);
}

#[test]
fn fuzz_jsonp_fenced_unicode_mix_random_chunks() {
    let input = "cb(```json\n{ t: '你'+'好', r: /a+/ }\n```);\n";
    let o = opts();
    let st = run_streaming_collect(input, o);
    let v: serde_json::Value = serde_json::from_str(&st).unwrap();
    assert_eq!(v["t"], "你好");
}

#[test]
fn fuzz_ndjson_values_mixed_empty_and_comments() {
    let input = "# h\n{a:1}\n\n// x\n{b:2}\n/*m*/\n{c:3}\n";
    let o = Options {
        stream_ndjson_aggregate: true,
        ..Default::default()
    };
    let st = run_streaming_collect(input, o);
    let v: serde_json::Value = serde_json::from_str(&st).unwrap();
    assert_eq!(v.as_array().map(|a| a.len()), Some(3));
}

#[test]
fn fuzz_large_array_of_pairs_with_comments() {
    let mut raw = String::from("[");
    for i in 0..200usize {
        if i > 0 {
            raw.push_str(",/*c*/");
        }
        raw.push_str(&format!("{{k:{}}}", i));
    }
    raw.push(']');
    let o = opts();
    let ns = crate::repair_to_string(&raw, &o).unwrap();
    let st = run_streaming_collect(&raw, o);
    let v1: serde_json::Value = serde_json::from_str(&ns).unwrap();
    let v2: serde_json::Value = serde_json::from_str(&st).unwrap();
    assert_eq!(v1, v2);
}

#[test]
fn fuzz_unicode_near_comment_markers_random_chunks() {
    let input = "{ '键'/*注释*/ : '值' , arr: [ '你'/*x*/,'好' ] }";
    let o = opts();
    let ns = crate::repair_to_string(input, &o).unwrap();
    let st = run_streaming_collect(input, o);
    let v1: serde_json::Value = serde_json::from_str(&ns).unwrap();
    let v2: serde_json::Value = serde_json::from_str(&st).unwrap();
    assert_eq!(v1, v2);
}

#[test]
fn fuzz_numbers_tolerances_and_suspicious_tokens() {
    let input = "{ a:.5, b:1., c:1e, d:10-20, e:1/3, f:1.1.1 }";
    let o = opts();
    let ns = crate::repair_to_string(input, &o).unwrap();
    let st = run_streaming_collect(input, o);
    let v1: serde_json::Value = serde_json::from_str(&ns).unwrap();
    let v2: serde_json::Value = serde_json::from_str(&st).unwrap();
    assert_eq!(v1, v2);
}

#[test]
fn fuzz_writer_streaming_large_object_equiv() {
    let mut s = String::from("{");
    for i in 0..200usize {
        if i > 0 {
            s.push(',');
        }
        s.push_str(&format!("k{}: 'v' + 'x'", i));
    }
    s.push('}');
    let o = opts();
    let expect = crate::repair_to_string(&s, &o).unwrap();
    let mut buf = Vec::new();
    crate::repair_to_writer_streaming(&s, &o, &mut buf).unwrap();
    let got = String::from_utf8(buf).unwrap();
    assert_eq!(expect, got);
}

#[test]
fn fuzz_streaming_random_chunk_sizes_stability() {
    // Mixed content with comments, unicode, regex, and concatenation
    let input = "{a:[1,/*c*/2, '你'+ '好'], r:/ab+/, note:'x'+'y'}";
    let o = opts();
    let ns = crate::repair_to_string(input, &o).unwrap();
    // Two different random sequences to simulate variance
    let mut r1 = crate::StreamRepairer::new(o.clone());
    let sizes1 = super::lcg_sizes(1, input.chars().count());
    let parts1 = super::chunk_by_char(input, &sizes1);
    let mut outs1 = String::new();
    for p in parts1.iter() {
        if let Some(s) = r1.push(p).unwrap() {
            outs1.push_str(&s);
        }
    }
    if let Some(t1) = r1.flush().unwrap() {
        outs1.push_str(&t1);
    }

    let mut r2 = crate::StreamRepairer::new(o);
    let sizes2 = super::lcg_sizes(2, input.chars().count());
    let parts2 = super::chunk_by_char(input, &sizes2);
    let mut outs2 = String::new();
    for p in parts2.iter() {
        if let Some(s) = r2.push(p).unwrap() {
            outs2.push_str(&s);
        }
    }
    if let Some(t2) = r2.flush().unwrap() {
        outs2.push_str(&t2);
    }

    let v_ns: serde_json::Value = serde_json::from_str(&ns).unwrap();
    let v1: serde_json::Value = serde_json::from_str(&outs1).unwrap();
    let v2: serde_json::Value = serde_json::from_str(&outs2).unwrap();
    assert_eq!(v_ns, v1);
    assert_eq!(v_ns, v2);
}