doido-cable 0.0.7

Action Cable analogue: channels, broadcasts, Turbo-friendly pub/sub backends for Doido.
Documentation 
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use doido_cable::{Cable, CableFrame, Channel, ChannelContext, MemoryPubSub, PubSub};
use doido_cable_macros::channel;
use std::sync::Arc;

#[channel]
struct ChatChannel;

#[async_trait::async_trait]
impl Channel for ChatChannel {
    async fn subscribed(&self, ctx: &ChannelContext) -> doido_core::Result<()> {
        let _ = ctx;
        Ok(())
    }
    async fn unsubscribed(&self, ctx: &ChannelContext) -> doido_core::Result<()> {
        let _ = ctx;
        Ok(())
    }
    async fn received(
        &self,
        _ctx: &ChannelContext,
        _data: serde_json::Value,
    ) -> doido_core::Result<()> {
        Ok(())
    }
}

#[tokio::test]
async fn test_full_pubsub_and_cable_broadcast() {
    let ps = Arc::new(MemoryPubSub::new());
    let mut rx = ps.subscribe("chat:1").await.unwrap();
    let cable = Cable::new(ps);
    cable
        .broadcast_to("chat:1", "hello from cable")
        .await
        .unwrap();
    let msg = rx.recv().await.unwrap();
    assert_eq!(msg, "hello from cable");
}

#[tokio::test]
async fn test_channel_macro_compiles() {
    let ch = ChatChannel;
    let ctx = ChannelContext {
        identifier: "ChatChannel".to_string(),
        stream: Some("chat:1".to_string()),
    };
    ch.subscribed(&ctx).await.unwrap();
    ch.received(&ctx, serde_json::json!({"action": "speak", "text": "hi"}))
        .await
        .unwrap();
    ch.unsubscribed(&ctx).await.unwrap();
}

#[test]
fn test_cable_frame_protocol_parsing() {
    let frame = CableFrame::parse(r#"{"type":"subscribe","identifier":"ChatChannel"}"#).unwrap();
    assert_eq!(
        frame,
        CableFrame::Subscribe {
            identifier: "ChatChannel".to_string()
        }
    );
}