fix(octez): set default network for run options

crates/octez/src/async/node_config.rs

@@ -30,7 +30,7 @@ impl Display for OctezNodeHistoryMode {
     }
 }
 
-#[derive(Default, Clone, PartialEq, Debug)]
+#[derive(Clone, PartialEq, Debug)]
 pub struct OctezNodeRunOptions {
     synchonisation_threshold: u8,
     network: String,
@@ -53,6 +53,16 @@ impl Display for OctezNodeRunOptions {
     }
 }
 
+impl Default for OctezNodeRunOptions {
+    fn default() -> Self {
+        Self {
+            network: DEFAULT_NETWORK.to_owned(),
+            synchonisation_threshold: 0,
+            history_mode: None,
+        }
+    }
+}
+
 #[derive(Default)]
 pub struct OctezNodeRunOptionsBuilder {
     synchonisation_threshold: Option<u8>,
@@ -254,6 +264,14 @@ mod tests {
         assert_eq!(run_options.synchonisation_threshold, 0);
     }
 
+    #[test]
+    fn run_option_default() {
+        let run_options = OctezNodeRunOptions::default();
+        assert!(run_options.history_mode.is_none());
+        assert_eq!(run_options.network, "sandbox");
+        assert_eq!(run_options.synchonisation_threshold, 0);
+    }
+
     #[test]
     fn run_option_to_string() {
         let mut run_options_builder = OctezNodeRunOptionsBuilder::new();