read expiration from Set command + tests

src/tests.rs

@@ -0,0 +1,38 @@
+use std::time::Duration;
+
+use tokio::sync::oneshot;
+
+use crate::{client::Client, config::ServerConfig, server::Server};
+
+#[tokio::test]
+async fn expiration() -> Result<(), Box<dyn std::error::Error>> {
+    let config = ServerConfig::builder().host("127.0.0.1".into()).build();
+    let mut server = Server::new(&config).await?;
+
+    let (shutdown_tx, shutdown_rx) = oneshot::channel();
+    let server_handle = tokio::spawn(async move { server.run(shutdown_rx).await });
+
+    let mut client = client("127.0.0.1:6171").await?;
+
+    client
+        .set("test-key", "test-value".as_bytes(), Some(2))
+        .await
+        .unwrap();
+    assert!(client.has("test-key").await.unwrap());
+    tokio::time::sleep(Duration::from_secs(1)).await;
+    assert!(client.has("test-key").await.unwrap());
+    tokio::time::sleep(Duration::from_secs(2)).await;
+    assert!(!client.has("test-key").await.unwrap());
+
+    shutdown_tx.send(()).unwrap();
+
+    server_handle.await??;
+
+    Ok(())
+}
+
+async fn client<A: tokio::net::ToSocketAddrs>(
+    addr: A,
+) -> Result<Client, Box<dyn std::error::Error>> {
+    Ok(Client::new(addr).await?)
+}