timeout-tracing 0.1.0

Returns stack and span trace when the future hits a timeout
Documentation 
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use std::time::Duration;

use futures::{StreamExt, stream::FuturesUnordered};
use serial_test::serial;
use tokio::time::sleep;
use tracing::instrument;

use crate::{
    TimeoutElapsed,
    tests::{insta_trace_filters, run_with_tracing},
};

#[tokio::test]
#[serial]
async fn with_futures_unordered() {
    let result = run_with_tracing(Duration::from_millis(100), do_unordered()).await;

    assert!(matches!(result, Err(TimeoutElapsed { .. })));
    // Can't see inside FuturesUnordered, as it manages its own sub-wakers
    assert_eq!(result.as_ref().err().unwrap().active_traces.len(), 1);
    assert!(
        result
            .as_ref()
            .err()
            .unwrap()
            .active_traces
            .iter()
            .any(|e| e.stack_trace.to_string().contains("do_unordered"))
    );
    insta::with_settings!({
        filters => insta_trace_filters()
    }, {
        insta::assert_debug_snapshot!(result);
    });
}

#[instrument]
async fn do_unordered() {
    let mut fu = FuturesUnordered::new();
    for i in 0..10 {
        fu.push(inner_fut(i));
    }

    while let Some(()) = fu.next().await {}
}

#[instrument]
async fn inner_fut(idx: u32) {
    _ = idx;
    sleep(Duration::from_secs(1)).await;
}