feat(iota/docs): add dev inspect test and docs

crates/iota/src/client_commands.rs

@@ -2962,11 +2962,11 @@ async fn execute_dev_inspect(
 ) -> Result<IotaClientCommandResult, anyhow::Error> {
     let client = context.get_client().await?;
     let gas_budget = gas_budget.map(iota_serde::BigInt::from);
-    let mut gas_objs = vec![];
     let gas_objects = if let Some(gas_payment) = gas_payment {
         if gas_payment.is_empty() {
             None
         } else {
+            let mut gas_objs = vec![];
             for o in gas_payment.iter() {
                 let obj_ref = context.get_object_ref(*o).await?;
                 gas_objs.push(obj_ref);

crates/iota/tests/cli_tests.rs

@@ -4578,3 +4578,18 @@ async fn test_call_command_emit_args() -> Result<(), anyhow::Error> {
 
     Ok(())
 }
+
+#[sim_test]
+async fn test_ptb_dev_inspect() -> Result<(), anyhow::Error> {
+    let mut test_cluster = TestClusterBuilder::new().build().await;
+    let context = &mut test_cluster.wallet;
+
+    let publish_ptb_string = r#"
+        --assign hello_option "some('Hello')" \
+        --move-call std::option::borrow "<std::string::String>" hello_option \
+        --dev-inspect
+        "#;
+    let args = shlex::split(publish_ptb_string).unwrap();
+    iota::client_ptb::ptb::PTB { args }.execute(context).await?;
+    Ok(())
+}