test: fix examples & add more edge cases

examples/async.rs

@@ -1,13 +1,16 @@
-use pistones::{lang::Response, Client, Error};
+use pistones::{Client, Error};
 
 #[tokio::main]
 async fn main() -> Result<(), Error> {
-    let response = compile_code("rust", "fn main() { println!(\"Hola\") }").await?;
-    println("{response:?}");
-    Ok(())
-}
-
-async fn compile_code(lang: &str, code: &str) -> Result<Response, Error> {
     let client = Client::new().await?.user_agent("@romancitodev")?;
-    client.run(lang, code).await
+
+    tokio::spawn(async move {
+        let _ = client
+            .run("rust", "fn main() { println!(\"Hola\") }")
+            .await
+            .unwrap();
+    });
+
+    println!("hello!");
+    Ok(())
 }

examples/refresh_cache.rs

@@ -3,7 +3,7 @@ use pistones::{Client, Error};
 #[tokio::main]
 async fn main() -> Result<(), Error> {
     // Normal client
-    let client = Client::new().await?;
+    let _ = Client::new().await?;
     // Create client with cache disabled
     let client = Client::new().await?.disable_cache();