json_in_type 1.1.1

a library for fast json serialization
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

use json_in_type::*;

#[test]
fn test_nested_macro() {
    assert_eq!("[{}]", json_list![json_object! {}].to_json_string());
    assert_eq!("[{}]", json_list![json_object! {},].to_json_string());
    assert_eq!(
        r#"[{"ok":true}]"#,
        json_list![json_object! {ok:true}].to_json_string()
    );
    assert_eq!(
        r#"[{"a":0,"b":0}]"#,
        json_list![json_object! {a:0,b:0}].to_json_string()
    );
    assert_eq!(
        r#"[{"a":0,"b":0},{"a":0,"b":0}]"#,
        json_list![json_object! {a:0,b:0}, json_object! {a:0,b:0},].to_json_string()
    );
}

#[test]
fn test_mem_size() {
    let value_count: u8 = 3;
    let (val1, val2, val3): (i8, i8, i8) = (42, -42, 66);

    let small_object = json_object! {
        value_count,
        values: json_list![
            json_object! {ok:true, value: val1},
            json_object! {ok:true, value: val2},
            json_object! {ok:true, value: val3},
        ]
    };
    assert_eq!(4, ::std::mem::size_of_val(&small_object));
}

#[test]
fn mem_size_example() {
    let (result_count, answer) = (1u8, 42u8);
    let my_val = json_object! {
        result_count,
        errors: null,
        results: json_list![
            json_object!{answer, ok: true}
        ]
    };
    // my_val weighs only two bytes, because we stored only 2 u8 in it
    assert_eq!(2, ::std::mem::size_of_val(&my_val));
    assert_eq!(
        r#"{"result_count":1,"errors":null,"results":[{"answer":42,"ok":true}]}"#,
        my_val.to_json_string()
    );
}

#[test]
fn handwritten_equivalent() {
    fn write_obj_bad(value: i32) -> String {
        format!("{{\"value\":{}}}", value)
    }
    fn write_obj_good(value: i32) -> String {
        (json_object! {value}).to_json_string()
    }
    assert_eq!(write_obj_bad(42), write_obj_good(42));
}