You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: singlenode.rs
    path of file: ./repos/async-raft/async-raft/tests
    
    the code of the file until where you have to start completion: mod fixtures;

use std::sync::Arc;
use std::time::Duration;

use anyhow::Result;
use async_raft::Config;
use tokio::time::sleep;

use fixtures::RaftRouter;

/// Single-node cluster initialization test.
///
/// What does this test do?
///
/// - brings 1 node online with only knowledge of itself.
/// - 
    
async fn singlenode() -> Result<()> {
    fixtures::init_tracing();

    // Setup test dependencies.
    let config = Arc::new(Config::build("test".into()).validate().expect("failed to build Raft config"));
    let router = Arc::new(RaftRouter::new(config.clone()));
    router.new_raft_node(0).await;

    // Assert all nodes are in non-voter state & have no entries.
    sleep(Duration::from_secs(10)).await;
    router.assert_pristine_cluster().await;

    // Initialize the cluster, then assert that a stable cluster was formed & held.
    tracing::info!("--- initializing cluster");
    router.initialize_from_single_node(0).await?;
    sleep(Duration::from_secs(10)).await;
    router.assert_stable_cluster(Some(1), Some(1)).await;

    // Write some data to the single node cluster.
    router.client_request_many(0, "0", 1000).await;
    router.assert_stable_cluster(Some(1), Some(1001)).await;
    router.assert_storage_state(1, 1001, Some(0), 1001, None).await;

    // Read some data from the single node cluster.
    router.client_read(0).await?;

    Ok(())
}