tryage to make error handling cleaner

rclrs/src/node/graph.rs

@@ -484,6 +484,10 @@ mod tests {
             .and_then(|val| val.parse::<usize>().map_err(|e| format!("{}", e)))
             .map(|id| if id != 99 { 99 } else { 98 })
             .expect("Error setting domain_id");
+        let context: Context =
+            Context::new_with_options([], InitOptions::new().with_domain_id(Some(domain_id)))
+                .unwrap_or_else(|error| panic!("Failed to create context: {}", error));
+
         let node_name = "test_publisher_names_and_types";
         let node = Node::new(&context, node_name).unwrap();
         // Test that the graph has no publishers