revolt_optional_struct 0.2.0

Crate defining a macro that will generate, from a structure, another structure with only Option<T> fields
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

#[macro_use]
extern crate optional_struct;

use serde::Serialize;

#[derive(OptionalStruct, Serialize)]
#[optional_derive(Serialize)]
#[opt_skip_serializing_none]
struct Data {
    #[opt_passthrough]
    #[serde(rename = "new_key")]
    test: Option<String>,
}

#[test]
fn test_serde() {
    let data = OptionalData {
        test: Some("value".into()),
    };

    assert_eq!(
        serde_json::to_string(&data).unwrap(),
        "{\"new_key\":\"value\"}"
    );

    let data = OptionalData { test: None };

    assert_eq!(serde_json::to_string(&data).unwrap(), "{}");
}