#[cfg(all(tokio_unstable, feature = "tracing"))]
mod tests {
    use std::rc::Rc;
    use tokio::{
        task::{Builder, LocalSet},
        test,
    };

    #[test]
    async fn spawn_with_name() {
        let result = Builder::new()
            .name("name")
            .spawn(async { "task executed" })
            .await;

        assert_eq!(result.unwrap(), "task executed");
    }

    #[test]
    async fn spawn_blocking_with_name() {
        let result = Builder::new()
            .name("name")
            .spawn_blocking(|| "task executed")
            .await;

        assert_eq!(result.unwrap(), "task executed");
    }

    #[test]
    async fn spawn_local_with_name() {
        let unsend_data = Rc::new("task executed");
        let result = LocalSet::new()
            .run_until(async move {
                Builder::new()
                    .name("name")
                    .spawn_local(async move { unsend_data })
                    .await
            })
            .await;

        assert_eq!(*result.unwrap(), "task executed");
    }

    #[test]
    async fn spawn_without_name() {
        let result = Builder::new().spawn(async { "task executed" }).await;

        assert_eq!(result.unwrap(), "task executed");
    }

    #[test]
    async fn spawn_blocking_without_name() {
        let result = Builder::new().spawn_blocking(|| "task executed").await;

        assert_eq!(result.unwrap(), "task executed");
    }

    #[test]
    async fn spawn_local_without_name() {
        let unsend_data = Rc::new("task executed");
        let result = LocalSet::new()
            .run_until(async move { Builder::new().spawn_local(async move { unsend_data }).await })
            .await;

        assert_eq!(*result.unwrap(), "task executed");
    }
}