simple_json_server 1.0.2

A simple way to build a JSON-based server with automatic JSON serialization/deserialization, error handling, async support, type safety, and comprehensive RustDoc generation.
Documentation 
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use crate::{actor, Actor};

#[derive(Debug, Clone)]
pub struct TestActor {
    pub counter: i32,
}

impl TestActor {
    pub fn new() -> Self {
        Self { counter: 0 }
    }
}

#[actor]
impl TestActor {
    pub async fn add(&self, a: i32, b: i32) -> i32 {
        a + b
    }

    pub async fn get_counter(&self) -> i32 {
        self.counter
    }

    pub async fn greet(&self, name: String) -> String {
        format!("Hello, {}!", name)
    }

    pub async fn no_params(&self) -> String {
        "No parameters needed".to_string()
    }

    // This should be ignored (not public)
    #[allow(dead_code)]
    async fn private_method(&self) -> String {
        unreachable!("A private method should not be reachable via dispatch.");
    }

    #[allow(dead_code)]
    // This should be ignored (not async)
    pub fn sync_method(&self) -> String {
        unreachable!("A non-async method should not be reachable via dispatch.");
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[tokio::test]
    async fn test_add_method() {
        let actor = TestActor::new();
        let message = r#"{"a": 5, "b": 3}"#;
        let result = actor.dispatch("add", message).await;
        assert_eq!(result, "8");
    }

    #[tokio::test]
    async fn test_get_counter_method() {
        let actor = TestActor::new();
        let message = r#"{}"#;
        let result = actor.dispatch("get_counter", message).await;
        assert_eq!(result, "0");
    }

    #[tokio::test]
    async fn test_greet_method() {
        let actor = TestActor::new();
        let message = r#"{"name": "World"}"#;
        let result = actor.dispatch("greet", message).await;
        assert_eq!(result, r#""Hello, World!""#);
    }

    #[tokio::test]
    async fn test_no_params_method() {
        let actor = TestActor::new();
        let message = r#"{}"#;
        let result = actor.dispatch("no_params", message).await;
        assert_eq!(result, r#""No parameters needed""#);
    }

    #[tokio::test]
    async fn test_unknown_method() {
        let actor = TestActor::new();
        let message = r#"{}"#;
        let result = actor.dispatch("unknown", message).await;
        assert!(result.contains("Unknown method"));
    }

    #[tokio::test]
    async fn test_invalid_json() {
        let actor = TestActor::new();
        let message = r#"{"invalid": json"#;
        let result = actor.dispatch("invalid", message).await;
        assert!(result.contains("Failed to parse JSON"));
    }

    #[tokio::test]
    async fn test_private_method_not_accessible() {
        let actor = TestActor::new();
        let message = r#"{}"#;
        let result = actor.dispatch("private_method", message).await;
        assert!(
            result.contains("Unknown method: private_method"),
            "Private methods should not be accessible via dispatch. Got: {}",
            result
        );
    }

    #[tokio::test]
    async fn test_sync_method_not_accessible() {
        let actor = TestActor::new();
        let message = r#"{}"#;
        let result = actor.dispatch("sync_method", message).await;
        assert!(
            result.contains("Unknown method: sync_method"),
            "Non-async methods should not be accessible via dispatch. Got: {}",
            result
        );
    }
}