add monitoring test

Author: isabelatkinson

src/test/client.rs

@@ -1119,4 +1119,21 @@ async fn socks5_proxy() {
     ))
     .await
     .unwrap();
+
+    // From the spec: Drivers MUST verify for at least one of the connection strings marked
+    // (succeeds) that command monitoring events do not reference the SOCKS5 proxy host where the
+    // MongoDB service server/port are referenced.
+    let uri = format!(
+        "mongodb://{mapped_host}/?proxyHost={ipv4_localhost}&proxyPort=1081&\
+         directConnection=true{tls}"
+    );
+    let options = ClientOptions::parse(uri).await.unwrap();
+    let client = Client::for_test().options(options).monitor_events().await;
+    client
+        .database("db")
+        .run_command(doc! { "ping": 1 })
+        .await
+        .unwrap();
+    let (started, _) = client.events.get_successful_command_execution("ping");
+    assert_eq!(&started.connection.address.to_string(), mapped_host);
 }