test(examples): add examples

This commit is contained in:
ByteDream 2023-02-24 14:21:56 +01:00
parent 8d1d49150f
commit 6bb8576fa8
2 changed files with 68 additions and 0 deletions

29
examples/basic.rs Normal file
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use serde::Deserialize;
use serde_inline_default::serde_inline_default;
use serde_json::json;
#[serde_inline_default]
#[derive(Deserialize)]
struct Basic {
// if using `String` you have to call `.to_string()`
#[serde_inline_default("0.0.0.0".to_string())]
host: String,
// works without specifying the integer type at the end of the value (8080u16)
#[serde_inline_default(8080)]
port: u16,
// expressions are working too
#[serde_inline_default(serde_json::json!({}))]
random_third_party_type: serde_json::Value,
}
fn main() -> Result<(), serde_json::Error> {
// creating a empty json object to use the default value of all fields
let json_object = json!({});
let basic: Basic = serde_json::from_value(json_object)?;
assert_eq!(basic.host, "0.0.0.0".to_string());
assert_eq!(basic.port, 8080);
assert_eq!(basic.random_third_party_type, json!({}));
Ok(())
}

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examples/macro_rules.rs Normal file
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use serde_json::json;
macro_rules! simple_macro {
(struct $name:ident { $($field:ident: $type:ty $(= $default:expr)?),*$(,)? }) => {
#[serde_inline_default::serde_inline_default]
#[derive(serde::Deserialize)]
struct $name {
$(
$(
#[serde_inline_default($default)]
)?
$field: $type
),*
}
}
}
fn main() -> Result<(), serde_json::Error> {
// `username` and `password` must be set when deserializing as no default value is defined for
// them. `secret` not as we're defining a default value for it
simple_macro! {
struct Example {
username: String,
password: String,
secret: String = "verysecretsecret".to_string()
}
}
let json_object = json!({
"username": "testuser",
"password": "testpassword"
});
let example: Example = serde_json::from_value(json_object)?;
assert_eq!(example.username, "testuser");
assert_eq!(example.password, "testpassword");
assert_eq!(example.secret, "verysecretsecret");
Ok(())
}