yason 0.0.2

Encoding and decoding support for YASON in Rust
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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224

//! Json to Yason tests

use std::cmp::Ordering;
use std::str::FromStr;
use yason::{Array, DataType, Number, Object, Value, YasonBuf};

fn assert_scalar(input: &str, expected: &str, expected_type: DataType) {
    let yason = YasonBuf::parse(input).unwrap();
    match expected_type {
        DataType::String => {
            assert_eq!(yason.data_type().unwrap(), DataType::String);
            assert_eq!(yason.string().unwrap(), expected);
        }
        DataType::Number => {
            assert_eq!(yason.data_type().unwrap(), DataType::Number);
            assert_eq!(yason.number().unwrap(), Number::from_str(expected).unwrap());
        }
        DataType::Bool => {
            assert_eq!(yason.data_type().unwrap(), DataType::Bool);
            assert_eq!(yason.bool().unwrap(), bool::from_str(expected).unwrap());
        }
        DataType::Null => {
            assert_eq!(yason.data_type().unwrap(), DataType::Null);
            assert!(yason.is_null().unwrap());
        }
        _ => {}
    }
}

#[test]
fn test_scalar() {
    // string
    assert_scalar(r#""string""#, "string", DataType::String);
    assert_scalar(r#""Nan""#, "Nan", DataType::String);
    assert_scalar(r#""string\tstring""#, "string\tstring", DataType::String);
    assert_scalar(r#""string\\string""#, "string\\string", DataType::String);
    assert_scalar(r#""string\nstring""#, "string\nstring", DataType::String);
    assert_scalar(r#""string\"string""#, "string\"string", DataType::String);
    assert_scalar(r#""string\rstring""#, "string\rstring", DataType::String);

    // number
    assert_scalar("123", "123", DataType::Number);
    assert_scalar("123e2", "123e2", DataType::Number);
    assert_scalar("123.123", "123.123", DataType::Number);
    assert_scalar(
        "222222222222222222222222222222222222222222",
        "222222222222222222222222222222222222222200",
        DataType::Number,
    );
    assert_scalar(
        "555555555555555555555555555555555555555555",
        "555555555555555555555555555555555555555600",
        DataType::Number,
    );
    assert_scalar("1e-140", "0", DataType::Number);

    // bool
    assert_scalar("true", "true", DataType::Bool);
    assert_scalar("false", "false", DataType::Bool);

    // null
    assert_scalar("null", "null", DataType::Null);
}

enum TestValue {
    Scalar((DataType, String)),
    Object(Vec<(String, TestValue)>),
    Array(Vec<TestValue>),
}

impl TestValue {
    fn scalar(&self) -> &str {
        match self {
            TestValue::Scalar((_, str)) => str.as_str(),
            _ => unreachable!(),
        }
    }

    fn object(&mut self) -> &mut [(String, TestValue)] {
        match self {
            TestValue::Object(object) => object.as_mut(),
            _ => unreachable!(),
        }
    }

    fn array(&mut self) -> &mut [TestValue] {
        match self {
            TestValue::Array(array) => array.as_mut(),
            _ => unreachable!(),
        }
    }

    fn data_type(&self) -> DataType {
        match self {
            TestValue::Scalar((ty, _)) => *ty,
            TestValue::Object(_) => DataType::Object,
            TestValue::Array(_) => DataType::Array,
        }
    }
}

fn assert_object(object: Object, expected: &mut TestValue) {
    let expected = expected.object();
    assert_eq!(object.len().unwrap(), expected.len());

    expected.sort_by(|a, b| match a.0.len().cmp(&b.0.len()) {
        Ordering::Equal => a.0.cmp(&b.0),
        Ordering::Greater => Ordering::Greater,
        Ordering::Less => Ordering::Less,
    });

    for (id, item) in object.iter().unwrap().enumerate() {
        let (key, value) = item.unwrap();
        assert_eq!(key, expected[id].0.as_str());
        assert_value(value, &mut expected[id].1);
    }
}

fn assert_array(array: Array, expected: &mut TestValue) {
    let expected = expected.array();
    assert_eq!(array.len().unwrap(), expected.len());

    for (id, value) in array.iter().unwrap().enumerate() {
        assert_value(value.unwrap(), &mut expected[id]);
    }
}

fn assert_value(value: Value, expected: &mut TestValue) {
    assert_eq!(value.data_type(), expected.data_type());
    match value {
        Value::Object(obj) => assert_object(obj, expected),
        Value::Array(arr) => assert_array(arr, expected),
        Value::String(val) => assert_eq!(val, expected.scalar()),
        Value::Number(val) => assert_eq!(val, Number::from_str(expected.scalar()).unwrap()),
        Value::Bool(val) => assert_eq!(val, bool::from_str(expected.scalar()).unwrap()),
        Value::Null => assert_eq!("null", expected.scalar()),
    }
}

#[test]
fn test_array() {
    let input = r#"[]"#;
    let expected = vec![];
    let yason = YasonBuf::parse(input).unwrap();
    assert_eq!(yason.data_type().unwrap(), DataType::Array);
    assert_array(yason.array().unwrap(), &mut TestValue::Array(expected));

    let input = r#"["John Doe", 43, true, null, [2345678], {"key": true}]"#;
    let expected = vec![
        TestValue::Scalar((DataType::String, "John Doe".to_string())),
        TestValue::Scalar((DataType::Number, "43".to_string())),
        TestValue::Scalar((DataType::Bool, "true".to_string())),
        TestValue::Scalar((DataType::Null, "null".to_string())),
        TestValue::Array(vec![TestValue::Scalar((DataType::Number, "2345678".to_string()))]),
        TestValue::Object(vec![(
            "key".to_string(),
            TestValue::Scalar((DataType::Bool, "true".to_string())),
        )]),
    ];

    let yason = YasonBuf::parse(input).unwrap();
    assert_eq!(yason.data_type().unwrap(), DataType::Array);
    assert_array(yason.array().unwrap(), &mut TestValue::Array(expected));
}

#[test]
fn test_object() {
    let input = r#"{}"#;
    let expected = vec![];
    let yason = YasonBuf::parse(input).unwrap();
    assert_eq!(yason.data_type().unwrap(), DataType::Object);
    assert_object(yason.object().unwrap(), &mut TestValue::Object(expected));

    let input = r#"{"key": 123}"#;
    let expected = vec![(
        "key".to_string(),
        TestValue::Scalar((DataType::Number, "123".to_string())),
    )];
    let yason = YasonBuf::parse(input).unwrap();
    assert_eq!(yason.data_type().unwrap(), DataType::Object);
    assert_object(yason.object().unwrap(), &mut TestValue::Object(expected));

    let input = r#"{
        "name": "John Doe",
        "age": 43,
        "bool": true,
        "null": null,
        "phone": [2345678],
        "object": {"key": true}
    }"#;
    let expected = vec![
        (
            "name".to_string(),
            TestValue::Scalar((DataType::String, "John Doe".to_string())),
        ),
        (
            "age".to_string(),
            TestValue::Scalar((DataType::Number, "43".to_string())),
        ),
        (
            "bool".to_string(),
            TestValue::Scalar((DataType::Bool, "true".to_string())),
        ),
        (
            "null".to_string(),
            TestValue::Scalar((DataType::Null, "null".to_string())),
        ),
        (
            "phone".to_string(),
            TestValue::Array(vec![TestValue::Scalar((DataType::Number, "2345678".to_string()))]),
        ),
        (
            "object".to_string(),
            TestValue::Object(vec![(
                "key".to_string(),
                TestValue::Scalar((DataType::Bool, "true".to_string())),
            )]),
        ),
    ];

    let yason = YasonBuf::parse(input).unwrap();
    assert_eq!(yason.data_type().unwrap(), DataType::Object);
    assert_object(yason.object().unwrap(), &mut TestValue::Object(expected));
}