Fix linting errors

tracetools_test/src/test_subscription.cpp

@@ -3,39 +3,39 @@
 #include "rclcpp/rclcpp.hpp"
 #include "std_msgs/msg/string.hpp"
 
-
 class SubNode : public rclcpp::Node
 {
 public:
-    SubNode(rclcpp::NodeOptions options) : Node("sub_node", options)
-    {
-        sub_ = this->create_subscription<std_msgs::msg::String>(
-            "the_topic",
-            rclcpp::QoS(10),
-            std::bind(&SubNode::callback, this, std::placeholders::_1));
-    }
+  explicit SubNode(rclcpp::NodeOptions options)
+  : Node("sub_node", options)
+  {
+    sub_ = this->create_subscription<std_msgs::msg::String>(
+      "the_topic",
+      rclcpp::QoS(10),
+      std::bind(&SubNode::callback, this, std::placeholders::_1));
+  }
 
 private:
-    void callback(const std_msgs::msg::String::SharedPtr msg)
-    {
-        // Nothing
-        (void)msg;
-    }
+  void callback(const std_msgs::msg::String::SharedPtr msg)
+  {
+    // Nothing
+    (void)msg;
+  }
 
-    rclcpp::Subscription<std_msgs::msg::String>::SharedPtr sub_;
+  rclcpp::Subscription<std_msgs::msg::String>::SharedPtr sub_;
 };
 
-int main(int argc, char* argv[])
+int main(int argc, char * argv[])
 {
-    rclcpp::init(argc, argv);
+  rclcpp::init(argc, argv);
 
-    rclcpp::executors::SingleThreadedExecutor exec;
-    auto sub_node = std::make_shared<SubNode>(rclcpp::NodeOptions());
-    exec.add_node(sub_node);
+  rclcpp::executors::SingleThreadedExecutor exec;
+  auto sub_node = std::make_shared<SubNode>(rclcpp::NodeOptions());
+  exec.add_node(sub_node);
 
-    printf("spinning once\n");
-    exec.spin_once();
+  printf("spinning once\n");
+  exec.spin_once();
 
-    rclcpp::shutdown();
-    return 0;
+  rclcpp::shutdown();
+  return 0;
 }