Get part result from default()

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
rust
Domain
cli, tooling

Research direction

Start with the reproducer in testconfig.rs and main.rs, especially the blank test.toml and the confy::load_path:: call. Verify the loaded value and compare it with the Default implementations; done should mean the expected behavior for an empty file is clearly established and covered by a focused test or documentation.

Written by the indexing model from the issue text.

Description

Result is None when test.toml is blank. I wish to get as below, how can I do it?

Some(
    Test {
        sub: Some(
            [
                Data {
                    id: 2,
                    name: "3",
                },
                Data {
                    id: 4,
                    name: "5",
                },
            ],
        ),
    },
)

my code is here:

testconfig.rs:

use serde::{Deserialize, Serialize};

#[derive(Debug, Serialize, Deserialize)]
pub struct Data {
    pub id: usize,
    pub name: String,
}
impl Default for Data {
    fn default() -> Self {
        Self {
            id: 1,
            name: "test1".to_string(),
        }
    }
}
#[derive(Debug, Serialize, Deserialize)]
pub struct Test {
    #[allow(dead_code)]
    pub sub: Option<Vec<Data>>,
}
impl Default for Test {
    fn default() -> Self {
        Self { sub: Some(vec![Data{id:2,name: "3".to_string()}, Data{id:4, name: "5".to_string()}]) }
    }
}
#[derive(Debug, Serialize, Deserialize)]
pub struct TestGlobalConfig {
    #[allow(dead_code)]
    pub test: Option<Test>,
}
impl Default for TestGlobalConfig {
    fn default() -> Self {
        Self { test: Some(Test::default()) }
    }
}

main.rs:

use std::sync::RwLock;
pub mod testconfig;
use crate::testconfig::TestGlobalConfig;
lazy_static::lazy_static! {
    static ref GLOBAL: RwLock<TestGlobalConfig> ={
        let path = concat!(env!("CARGO_MANIFEST_DIR"),"/test.toml");
        if let Ok(global_config) = confy::load_path::<TestGlobalConfig>(path) { 
            RwLock::new(global_config)
        } else {
            panic!("load config file {path:?} error!");
        }
    };
}
fn main() {
    let binding = GLOBAL.read().unwrap();
    let settings = &binding.test;
    println!("{:#?}", settings);
}
Dominant language
Rust
Stars
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Forks
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