Program Listing for File descriptions.hpp

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// Copyright 2020 ros2_control Development Team
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef ROS2_CONTROL_TEST_ASSETS__DESCRIPTIONS_HPP_
#define ROS2_CONTROL_TEST_ASSETS__DESCRIPTIONS_HPP_

#include <string>
#include <vector>

namespace ros2_control_test_assets
{
const auto urdf_head =
  R"(
<?xml version="1.0" encoding="utf-8"?>
<robot name="MinimalRobot">
  <!-- Used for fixing robot -->
  <link name="world"/>
  <joint name="base_joint" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0"/>
    <parent link="world"/>
    <child link="base_link"/>
  </joint>
  <link name="base_link">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="0.2" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint1" type="revolute">
    <origin rpy="-1.57079632679 0 0" xyz="0 0 0.2"/>
    <parent link="base_link"/>
    <child link="link1"/>
    <limit effort="0.1" lower="-3.14159265359" upper="3.14159265359" velocity="0.2"/>
  </joint>
  <link name="link1">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint2" type="revolute">
    <origin rpy="1.57079632679 0 0" xyz="0 0 0.9"/>
    <parent link="link1"/>
    <child link="link2"/>
    <limit effort="0.1" lower="-3.14159265359" upper="3.14159265359" velocity="0.2"/>
    <safety_controller soft_lower_limit="-1.5" soft_upper_limit="0.5" k_position="10.0" k_velocity="20.0"/>
  </joint>
  <link name="link2">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint3" type="revolute">
    <origin rpy="1.57079632679 0 0" xyz="0 0 0.9"/>
    <parent link="link2"/>
    <child link="link3"/>
    <limit effort="0.1" lower="-3.14159265359" upper="3.14159265359" velocity="0.2"/>
  </joint>
  <link name="link3">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="tool_joint" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 1"/>
    <parent link="link2"/>
    <child link="tool_link"/>
  </joint>
  <link name="tool_link">
  </link>
)";

const auto urdf_head_revolute_missing_limits =
  R"(
<?xml version="1.0" encoding="utf-8"?>
<robot name="MinimalRobot">
  <!-- Used for fixing robot -->
  <link name="world"/>
  <joint name="base_joint" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0"/>
    <parent link="world"/>
    <child link="base_link"/>
  </joint>
  <link name="base_link">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="0.2" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint1" type="revolute">
    <origin rpy="-1.57079632679 0 0" xyz="0 0 0.2"/>
    <parent link="base_link"/>
    <child link="link1"/>
  </joint>
  <link name="link1">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint2" type="revolute">
    <origin rpy="1.57079632679 0 0" xyz="0 0 0.9"/>
    <parent link="link1"/>
    <child link="link2"/>
    <limit effort="0.1" lower="-3.14159265359" upper="3.14159265359" velocity="0.2"/>
  </joint>
  <link name="link2">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
)";

const auto urdf_head_continuous_missing_limits =
  R"(
<?xml version="1.0" encoding="utf-8"?>
<robot name="MinimalRobot">
  <!-- Used for fixing robot -->
  <link name="world"/>
  <joint name="base_joint" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0"/>
    <parent link="world"/>
    <child link="base_link"/>
  </joint>
  <link name="base_link">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="0.2" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint1" type="continuous">
    <origin rpy="-1.57079632679 0 0" xyz="0 0 0.2"/>
    <parent link="base_link"/>
    <child link="link1"/>
  </joint>
  <link name="link1">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint2" type="continuous">
    <origin rpy="1.57079632679 0 0" xyz="0 0 0.9"/>
    <parent link="link1"/>
    <child link="link2"/>
  </joint>
  <link name="link2">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint3" type="revolute">
    <origin rpy="1.57079632679 0 0" xyz="0 0 0.9"/>
    <parent link="link2"/>
    <child link="link3"/>
    <limit effort="0.1" lower="-3.14159265359" upper="3.14159265359" velocity="0.2"/>
  </joint>
  <link name="link3">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="tool_joint" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 1"/>
    <parent link="link2"/>
    <child link="tool_link"/>
  </joint>
  <link name="tool_link">
  </link>
)";

const auto urdf_head_continuous_with_limits =
  R"(
<?xml version="1.0" encoding="utf-8"?>
<robot name="MinimalRobot">
  <!-- Used for fixing robot -->
  <link name="world"/>
  <joint name="base_joint" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0"/>
    <parent link="world"/>
    <child link="base_link"/>
  </joint>
  <link name="base_link">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="0.2" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint1" type="continuous">
    <origin rpy="-1.57079632679 0 0" xyz="0 0 0.2"/>
    <parent link="base_link"/>
    <child link="link1"/>
    <limit effort="0.1" velocity="0.2"/>
  </joint>
  <link name="link1">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint2" type="continuous">
    <origin rpy="1.57079632679 0 0" xyz="0 0 0.9"/>
    <parent link="link1"/>
    <child link="link2"/>
    <limit effort="0.1" velocity="0.2"/>
  </joint>
  <link name="link2">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
)";

const auto urdf_head_prismatic_missing_limits =
  R"(
<?xml version="1.0" encoding="utf-8"?>
<robot name="MinimalRobot">
  <!-- Used for fixing robot -->
  <link name="world"/>
  <joint name="base_joint" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0"/>
    <parent link="world"/>
    <child link="base_link"/>
  </joint>
  <link name="base_link">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="0.2" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint1" type="prismatic">
    <origin rpy="-1.57079632679 0 0" xyz="0 0 0.2"/>
    <parent link="base_link"/>
    <child link="link1"/>
  </joint>
  <link name="link1">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint2" type="revolute">
    <origin rpy="1.57079632679 0 0" xyz="0 0 0.9"/>
    <parent link="link1"/>
    <child link="link2"/>
    <limit effort="0.1" lower="-3.14159265359" upper="3.14159265359" velocity="0.2"/>
  </joint>
  <link name="link2">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
)";

const auto urdf_head_mimic =
  R"(
<?xml version="1.0" encoding="utf-8"?>
<robot name="MinimalRobot">
  <!-- Used for fixing robot -->
  <link name="world"/>
  <joint name="base_joint" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0"/>
    <parent link="world"/>
    <child link="base_link"/>
  </joint>
  <link name="base_link">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="0.2" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint1" type="revolute">
    <origin rpy="-1.57079632679 0 0" xyz="0 0 0.2"/>
    <parent link="base_link"/>
    <child link="link1"/>
    <limit effort="0.1" lower="-3.14159265359" upper="3.14159265359" velocity="0.2"/>
  </joint>
  <link name="link1">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="joint2" type="revolute">
    <mimic joint="joint1" multiplier="-2" offset="0"/>
    <origin rpy="1.57079632679 0 0" xyz="0 0 0.9"/>
    <parent link="link1"/>
    <child link="link2"/>
    <limit effort="0.1" lower="-3.14159265359" upper="3.14159265359" velocity="0.2"/>
  </joint>
  <link name="link2">
    <inertial>
      <mass value="0.01"/>
      <origin xyz="0 0 0"/>
      <inertia ixx="0.001" ixy="0.0" ixz="0.0" iyy="0.001" iyz="0.0" izz="0.001"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
      <material name="DarkGrey">
        <color rgba="0.4 0.4 0.4 1.0"/>
      </material>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="1" radius="0.1"/>
      </geometry>
    </collision>
  </link>
  <joint name="tool_joint" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 1"/>
    <parent link="link2"/>
    <child link="tool_link"/>
  </joint>
  <link name="tool_link">
  </link>
)";

const auto urdf_tail =
  R"(
</robot>
)";

const auto hardware_resources =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
    <transmission name="ros2_control_transmission1">
      <plugin>transmission_interface/SimpleTransmission</plugin>
      <joint name="joint1" role="joint1">
        <mechanical_reduction>325.949</mechanical_reduction>
      </joint>
    </transmission>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system">
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
      <command_interface name="max_acceleration" />
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
    </joint>
    <gpio name="configuration">
      <command_interface name="max_tcp_jerk"/>
      <state_interface name="max_tcp_jerk"/>
    </gpio>
    <transmission name="differential_transmission">
      <plugin>transmission_interface/DifferentialTransmission</plugin>
      <actuator name="joint2_motor" role="actuator1">
        <mechanical_reduction>50</mechanical_reduction>
      </actuator>
      <actuator name="joint3_motor" role="actuator2">
        <mechanical_reduction>-50</mechanical_reduction>
      </actuator>
      <joint name="joint2" role="joint1">
        <offset>0.5</offset>
        <mechanical_reduction>2.0</mechanical_reduction>
      </joint>
      <joint name="joint3" role="joint2">
        <offset>-0.5</offset>
        <mechanical_reduction>-2.0</mechanical_reduction>
      </joint>
    </transmission>
    <transmission name="four_bar_transmission">
      <plugin>transmission_interface/FourBarLinkageTransmission</plugin>
      <actuator name="joint2_motor" role="actuator1">
        <mechanical_reduction>50</mechanical_reduction>
      </actuator>
      <actuator name="joint3_motor" role="actuator2">
        <mechanical_reduction>-50</mechanical_reduction>
      </actuator>
      <joint name="joint2" role="joint1">
        <offset>0.5</offset>
        <mechanical_reduction>2.0</mechanical_reduction>
      </joint>
      <joint name="joint3" role="joint2">
        <offset>-0.5</offset>
        <mechanical_reduction>-2.0</mechanical_reduction>
      </joint>
    </transmission>
  </ros2_control>
)";

const auto minimal_robot_transmissions =
  R"(
  <transmission name="minimal_transmission1">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="joint1">
      <hardwareInterface>PositionJointInterface</hardwareInterface>
    </joint>
    <actuator name="minimal_motor1">
      <mechanicalReduction>1</mechanicalReduction>
      <hardwareInterface>PositionJointInterface</hardwareInterface>
    </actuator>
  </transmission>
  <transmission name="minimal_transmission2">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="joint2">
      <hardwareInterface>VelocityJointInterface</hardwareInterface>
    </joint>
    <actuator name="minimal_motor2">
      <mechanicalReduction>60</mechanicalReduction>
      <hardwareInterface>VelocityJointInterface</hardwareInterface>
    </actuator>
  </transmission>
)";

const auto hardware_resources_with_disabled_limits =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <limits enable="false"/>
      <command_interface name="position"/>
      <command_interface name="velocity"/>
      <command_interface name="effort"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system">
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <limits enable="false"/>
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
      <command_interface name="max_acceleration" />
    </joint>
    <joint name="joint3">
      <command_interface name="position">
        <limits enable="false"/>
      </command_interface>
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
    </joint>
    <gpio name="configuration">
      <command_interface name="max_tcp_jerk"/>
      <state_interface name="max_tcp_jerk"/>
    </gpio>
  </ros2_control>
)";

const auto async_hardware_resources =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator" is_async="true" thread_priority="30">
    <properties>
      <async affinity="[2, 4,6]" scheduling_policy="detached" print_warnings="false"/>
    </properties>
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor" is_async="true">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system" is_async="true">
    <properties>
      <async thread_priority="70" affinity="[1]" scheduling_policy="synchronized"/>
    </properties>
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
      <command_interface name="max_acceleration" />
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
    </joint>
    <gpio name="configuration">
      <command_interface name="max_tcp_jerk"/>
      <state_interface name="max_tcp_jerk"/>
    </gpio>
  </ros2_control>
)";

const auto hardware_resources_with_different_rw_rates =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator" rw_rate="50">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor" rw_rate="20">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system" rw_rate="25">
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
      <command_interface name="max_acceleration" />
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
    </joint>
    <gpio name="configuration">
      <command_interface name="max_tcp_jerk"/>
      <state_interface name="max_tcp_jerk"/>
    </gpio>
  </ros2_control>
)";

const auto hardware_resources_with_different_rw_rates_with_async =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator" rw_rate="50" is_async="true">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor" rw_rate="20" is_async="true">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system" rw_rate="25" is_async="true">
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
      <command_interface name="max_acceleration" />
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
    </joint>
    <gpio name="configuration">
      <command_interface name="max_tcp_jerk"/>
      <state_interface name="max_tcp_jerk"/>
    </gpio>
  </ros2_control>
)";

const auto hardware_resources_with_negative_rw_rates =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator" rw_rate="-50">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="right_finger_joint">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
  </ros2_control>
)";

const auto hardware_resources_invalid_with_text_in_rw_rates =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator" rw_rate="d 50">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="right_finger_joint">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
  </ros2_control>
)";

const auto hardware_resources_invalid_out_of_range_in_rw_rates =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator" rw_rate="12345678901">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="right_finger_joint">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
  </ros2_control>
)";

const auto uninitializable_hardware_resources =
  R"(
  <ros2_control name="TestUninitializableActuatorHardware" type="actuator">
    <hardware>
      <plugin>test_uninitializable_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
  </ros2_control>
  <ros2_control name="TestUninitializableSensorHardware" type="sensor">
    <hardware>
      <plugin>test_uninitializable_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestUninitializableSystemHardware" type="system">
    <hardware>
      <plugin>test_uninitializable_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
      <command_interface name="max_acceleration" />
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
    </joint>
  </ros2_control>
)";

const auto hardware_resources_not_existing_actuator_plugin =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator">
    <hardware>
      <plugin>test_actuator23</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system">
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
      <command_interface name="max_acceleration" />
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
    </joint>
    <gpio name="configuration">
      <command_interface name="max_tcp_jerk"/>
      <state_interface name="max_tcp_jerk"/>
    </gpio>
  </ros2_control>
)";

const auto hardware_resources_not_existing_sensor_plugin =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor">
    <hardware>
      <plugin>test_sensor23</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system">
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
      <command_interface name="max_acceleration" />
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
    </joint>
    <gpio name="configuration">
      <command_interface name="max_tcp_jerk"/>
      <state_interface name="max_tcp_jerk"/>
    </gpio>
  </ros2_control>
)";
const auto hardware_resources_not_existing_system_plugin =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system">
    <hardware>
      <plugin>test_system23</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
      <command_interface name="max_acceleration" />
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
    </joint>
    <gpio name="configuration">
      <command_interface name="max_tcp_jerk"/>
      <state_interface name="max_tcp_jerk"/>
    </gpio>
  </ros2_control>
)";

const auto hardware_resources_duplicated_component =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <command_interface name="max_velocity" />
    </joint>
  </ros2_control>
  <ros2_control name="TestActuatorHardware" type="sensor">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system">
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
      <command_interface name="max_acceleration" />
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="acceleration"/>
    </joint>
    <gpio name="configuration">
      <command_interface name="max_tcp_jerk"/>
      <state_interface name="max_tcp_jerk"/>
    </gpio>
  </ros2_control>
)";

const auto hardware_resources_actuator_initializaion_error =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="does_not_exist"/>
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system">
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
  </ros2_control>
)";

const auto hardware_resources_sensor_initializaion_error =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
      <state_interface name="does_not_exist"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system">
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
  </ros2_control>
)";

const auto hardware_resources_system_initializaion_error =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system">
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="does_not_exist"/>
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="does_not_exist"/>
    </joint>
  </ros2_control>
)";

const auto hardware_resources_missing_state_keys =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="does_not_exist"/>
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
      <state_interface name="does_not_exist"/>
      <state_interface name="does_not_exist"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system">
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <command_interface name="max_acceleration"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="does_not_exist"/>
    </joint>
  </ros2_control>
)";

const auto hardware_resources_missing_command_keys =
  R"(
  <ros2_control name="TestActuatorHardware" type="actuator">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <command_interface name="does_not_exist"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
  <ros2_control name="TestSystemHardware" type="system">
    <hardware>
      <plugin>test_system</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <joint name="joint2">
      <command_interface name="velocity"/>
      <command_interface name="max_acceleration"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
    <joint name="joint3">
      <command_interface name="velocity"/>
      <command_interface name="does_not_exist"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
  </ros2_control>
)";

const auto hardware_resources_with_exclusive_interface =
  R"(
  <ros2_control name="TestActuatorHardware1" type="actuator">
    <hardware>
      <plugin>test_actuator_exclusive_interfaces</plugin>
    </hardware>
    <joint name="joint1">
      <command_interface name="position"/>
      <command_interface name="velocity"/>
      <command_interface name="effort"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>
  </ros2_control>
  <ros2_control name="TestActuatorHardware2" type="actuator">
    <hardware>
      <plugin>test_actuator_exclusive_interfaces</plugin>
    </hardware>
    <joint name="joint2">
      <command_interface name="position"/>
      <command_interface name="velocity"/>
      <command_interface name="effort"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>
  </ros2_control>
  <ros2_control name="TestActuatorHardware3" type="actuator">
    <hardware>
      <plugin>test_actuator_exclusive_interfaces</plugin>
    </hardware>
    <joint name="joint3">
      <command_interface name="position"/>
      <command_interface name="velocity"/>
      <command_interface name="effort"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>
  </ros2_control>
  <ros2_control name="TestSensorHardware" type="sensor">
    <hardware>
      <plugin>test_sensor</plugin>
      <param name="example_param_write_for_sec">2</param>
      <param name="example_param_read_for_sec">2</param>
    </hardware>
    <sensor name="sensor1">
      <state_interface name="velocity"/>
    </sensor>
  </ros2_control>
)";

const auto diffbot_urdf =
  R"(
<?xml version="1.0" ?>
<robot name="robot">
  <!-- Space btw top of beam and the each joint -->
  <!-- Links: inertial,visual,collision -->
  <link name="base_link">
    <inertial>
      <!-- origin is relative -->
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <mass value="5"/>
      <inertia ixx="5" ixy="0" ixz="0" iyy="5" iyz="0" izz="5"/>
    </inertial>
    <visual>
      <geometry>
        <box size="0.5 0.1 0.1"/>
      </geometry>
    </visual>
    <collision>
      <!-- origin is relative -->
      <origin xyz="0 0 0"/>
      <geometry>
        <box size="0.5 0.1 0.1"/>
      </geometry>
    </collision>
  </link>
  <link name="base_footprint">
    <visual>
      <geometry>
        <sphere radius="0.01"/>
      </geometry>
    </visual>
    <collision>
      <origin xyz="0 0 0"/>
      <geometry>
        <sphere radius="0.00000001"/>
      </geometry>
    </collision>
  </link>
  <joint name="base_footprint_joint" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0.11"/>
    <child link="base_link"/>
    <parent link="base_footprint"/>
  </joint>
  <link name="wheel_0_link">
    <inertial>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <mass value="1"/>
      <inertia ixx="0.2" ixy="0" ixz="0" iyy="0.2" iyz="0" izz="0.2"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="0.086" radius="0.11"/>
      </geometry>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="0.086" radius="0.11"/>
      </geometry>
    </collision>
  </link>
  <joint name="wheel_left" type="continuous">
    <parent link="base_link"/>
    <child link="wheel_0_link"/>
    <origin rpy="-1.5707963267948966 0 0" xyz="0.3 0 0"/>
    <axis xyz="0 0 1"/>
    <limit effort="100" velocity="1.0"/>
  </joint>
  <!-- Transmission is important to link the joints and the controller -->
  <transmission name="wheel_left_trans" type="SimpleTransmission">
    <actuator name="wheel_left_motor"/>
    <joint name="wheel_left"/>
    <mechanicalReduction>1</mechanicalReduction>
    <motorTorqueConstant>1</motorTorqueConstant>
  </transmission>
  <gazebo reference="wheel_0_link">
    <material>Gazebo/Red</material>
  </gazebo>
  <link name="wheel_1_link">
    <inertial>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <mass value="1"/>
      <inertia ixx="0.2" ixy="0" ixz="0" iyy="0.2" iyz="0" izz="0.2"/>
    </inertial>
    <visual>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="0.086" radius="0.11"/>
      </geometry>
    </visual>
    <collision>
      <origin rpy="0 0 0" xyz="0 0 0"/>
      <geometry>
        <cylinder length="0.086" radius="0.11"/>
      </geometry>
    </collision>
  </link>
  <joint name="wheel_right" type="continuous">
    <parent link="base_link"/>
    <child link="wheel_1_link"/>
    <origin rpy="-1.5707963267948966 0 0" xyz="-0.2 0 0"/>
    <axis xyz="0 0 1"/>
    <limit effort="100" velocity="1.0"/>
  </joint>
  <!-- Transmission is important to link the joints and the controller -->
  <transmission name="wheel_right_trans" type="SimpleTransmission">
    <actuator name="wheel_right_motor"/>
    <joint name="wheel_right"/>
    <mechanicalReduction>1</mechanicalReduction>
    <motorTorqueConstant>1</motorTorqueConstant>
  </transmission>
  <gazebo reference="wheel_1_link">
    <material>Gazebo/Red</material>
  </gazebo>
  <!-- Colour -->
  <gazebo reference="base_link">
    <material>Gazebo/Green</material>
  </gazebo>
  <gazebo reference="base_footprint">
    <material>Gazebo/Purple</material>
  </gazebo>
  <ros2_control name="TestActuatorHardwareLeft" type="actuator">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="wheel_left">
      <state_interface name="position"/>
      <command_interface name="velocity"/>
      <state_interface name="velocity"/>
    </joint>
  </ros2_control>
  <ros2_control name="TestActuatorHardwareRight" type="actuator">
    <hardware>
      <plugin>test_actuator</plugin>
    </hardware>
    <joint name="wheel_right">
      <state_interface name="position"/>
      <command_interface name="velocity"/>
      <state_interface name="velocity"/>
    </joint>
  </ros2_control>
  <ros2_control name="TestIMUSensorHardware" type="sensor">
    <hardware>
      <plugin>test_hardware_components/TestIMUSensor</plugin>
    </hardware>
    <sensor name="base_imu">
      <state_interface name="orientation.x"/>
      <state_interface name="orientation.y"/>
      <state_interface name="orientation.z"/>
      <state_interface name="orientation.w"/>
      <state_interface name="angular_velocity.x"/>
      <state_interface name="angular_velocity.y"/>
      <state_interface name="angular_velocity.z"/>
      <state_interface name="linear_acceleration.x"/>
      <state_interface name="linear_acceleration.y"/>
      <state_interface name="linear_acceleration.z"/>
    </sensor>
  </ros2_control>
</robot>
)";

const auto gripper_urdf_head =
  R"(<?xml version="1.0" ?>
<robot name="gripper">
  <link name="world"/>
  <link name="base">
    <visual>
      <geometry>
        <box size="0.5 1 1"/>
      </geometry>
      <origin xyz="0 0 0.5"/>
      <material name="violet">
        <color rgba="0.4 0.18 0.57 1.0" />
      </material>
    </visual>
    <inertial>
      <mass value="50"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <link name="finger_right">
    <visual>
      <geometry>
        <box size="0.4 0.1 1"/>
      </geometry>
      <origin xyz="0 0.05 0.5"/>
      <material name="grey">
        <color rgba="0.2 0.2 0.2 1"/>
      </material>
    </visual>
    <inertial>
      <mass value="5"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <link name="finger_left">
    <visual>
      <geometry>
        <box size="0.4 0.1 1"/>
      </geometry>
      <origin xyz="0 0.05 0.5"/>
      <material name="grey">
        <color rgba="0.2 0.2 0.2 1"/>
      </material>
    </visual>
    <inertial>
      <mass value="5"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <joint name="world_to_base" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0"/>
    <parent link="world"/>
    <child link="base"/>
  </joint>
  <joint name="right_finger_joint" type="prismatic">
    <axis xyz="0 1 0"/>
    <origin xyz="0.0 -0.48 1" rpy="0.0 0.0 0.0"/>
    <parent link="base"/>
    <child link="finger_right"/>
    <limit effort="1000.0" lower="0" upper="0.38" velocity="10"/>
  </joint>
  <joint name="left_finger_joint" type="prismatic">
    <mimic joint="right_finger_joint" multiplier="2" offset="1"/>
    <axis xyz="0 1 0"/>
    <origin xyz="0.0 0.48 1" rpy="0.0 0.0 3.1415926535"/>
    <parent link="base"/>
    <child link="finger_left"/>
    <limit effort="1000.0" lower="0" upper="0.38" velocity="10"/>
  </joint>
)";

const auto gripper_urdf_head_no_mimic =
  R"(<?xml version="1.0" ?>
<robot name="gripper">
  <link name="world"/>
  <link name="base">
    <visual>
      <geometry>
        <box size="0.5 1 1"/>
      </geometry>
      <origin xyz="0 0 0.5"/>
      <material name="violet">
        <color rgba="0.4 0.18 0.57 1.0" />
      </material>
    </visual>
    <inertial>
      <mass value="50"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <link name="finger_right">
    <visual>
      <geometry>
        <box size="0.4 0.1 1"/>
      </geometry>
      <origin xyz="0 0.05 0.5"/>
      <material name="grey">
        <color rgba="0.2 0.2 0.2 1"/>
      </material>
    </visual>
    <inertial>
      <mass value="5"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <link name="finger_left">
    <visual>
      <geometry>
        <box size="0.4 0.1 1"/>
      </geometry>
      <origin xyz="0 0.05 0.5"/>
      <material name="grey">
        <color rgba="0.2 0.2 0.2 1"/>
      </material>
    </visual>
    <inertial>
      <mass value="5"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <joint name="world_to_base" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0"/>
    <parent link="world"/>
    <child link="base"/>
  </joint>
  <joint name="right_finger_joint" type="prismatic">
    <axis xyz="0 1 0"/>
    <origin xyz="0.0 -0.48 1" rpy="0.0 0.0 0.0"/>
    <parent link="base"/>
    <child link="finger_right"/>
    <limit effort="1000.0" lower="0" upper="0.38" velocity="10"/>
  </joint>
  <joint name="left_finger_joint" type="prismatic">
    <axis xyz="0 1 0"/>
    <origin xyz="0.0 0.48 1" rpy="0.0 0.0 3.1415926535"/>
    <parent link="base"/>
    <child link="finger_left"/>
    <limit effort="1000.0" lower="0" upper="0.38" velocity="10"/>
  </joint>
)";

const auto gripper_urdf_head_unknown_joint =
  R"(<?xml version="1.0" ?>
<robot name="gripper">
  <link name="world"/>
  <link name="base">
    <visual>
      <geometry>
        <box size="0.5 1 1"/>
      </geometry>
      <origin xyz="0 0 0.5"/>
      <material name="violet">
        <color rgba="0.4 0.18 0.57 1.0" />
      </material>
    </visual>
    <inertial>
      <mass value="50"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <link name="finger_right">
    <visual>
      <geometry>
        <box size="0.4 0.1 1"/>
      </geometry>
      <origin xyz="0 0.05 0.5"/>
      <material name="grey">
        <color rgba="0.2 0.2 0.2 1"/>
      </material>
    </visual>
    <inertial>
      <mass value="5"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <link name="finger_left">
    <visual>
      <geometry>
        <box size="0.4 0.1 1"/>
      </geometry>
      <origin xyz="0 0.05 0.5"/>
      <material name="grey">
        <color rgba="0.2 0.2 0.2 1"/>
      </material>
    </visual>
    <inertial>
      <mass value="5"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <joint name="world_to_base" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0"/>
    <parent link="world"/>
    <child link="base"/>
  </joint>
  <joint name="right_finger_joint" type="prismatic">
    <axis xyz="0 1 0"/>
    <origin xyz="0.0 -0.48 1" rpy="0.0 0.0 0.0"/>
    <parent link="base"/>
    <child link="finger_right"/>
    <limit effort="1000.0" lower="0" upper="0.38" velocity="10"/>
  </joint>
  <joint name="left_finger_joint" type="prismatic">
    <mimic joint="middle_finger_joint" multiplier="1" offset="0"/>
    <axis xyz="0 1 0"/>
    <origin xyz="0.0 0.48 1" rpy="0.0 0.0 3.1415926535"/>
    <parent link="base"/>
    <child link="finger_left"/>
    <limit effort="1000.0" lower="0" upper="0.38" velocity="10"/>
  </joint>
)";

const auto gripper_urdf_head_incomplete =
  R"(<?xml version="1.0" ?>
<robot name="gripper">
  <link name="world"/>
  <link name="base">
    <visual>
      <geometry>
        <box size="0.5 1 1"/>
      </geometry>
      <origin xyz="0 0 0.5"/>
      <material name="violet">
        <color rgba="0.4 0.18 0.57 1.0" />
      </material>
    </visual>
    <inertial>
      <mass value="50"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <link name="finger_right">
    <visual>
      <geometry>
        <box size="0.4 0.1 1"/>
      </geometry>
      <origin xyz="0 0.05 0.5"/>
      <material name="grey">
        <color rgba="0.2 0.2 0.2 1"/>
      </material>
    </visual>
    <inertial>
      <mass value="5"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <joint name="world_to_base" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0"/>
    <parent link="world"/>
    <child link="base"/>
  </joint>
  <joint name="right_finger_joint" type="prismatic">
    <axis xyz="0 1 0"/>
    <origin xyz="0.0 -0.48 1" rpy="0.0 0.0 0.0"/>
    <parent link="base"/>
    <child link="finger_right"/>
    <limit effort="1000.0" lower="0" upper="0.38" velocity="10"/>
  </joint>
)";

const auto gripper_urdf_head_invalid_two_root_links =
  R"(<?xml version="1.0" ?>
<robot name="gripper">
  <link name="world"/>
  <link name="base">
    <visual>
      <geometry>
        <box size="0.5 1 1"/>
      </geometry>
      <origin xyz="0 0 0.5"/>
      <material name="violet">
        <color rgba="0.4 0.18 0.57 1.0" />
      </material>
    </visual>
    <inertial>
      <mass value="50"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <link name="finger_right">
    <visual>
      <geometry>
        <box size="0.4 0.1 1"/>
      </geometry>
      <origin xyz="0 0.05 0.5"/>
      <material name="grey">
        <color rgba="0.2 0.2 0.2 1"/>
      </material>
    </visual>
    <inertial>
      <mass value="5"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <link name="finger_left">
    <visual>
      <geometry>
        <box size="0.4 0.1 1"/>
      </geometry>
      <origin xyz="0 0.05 0.5"/>
      <material name="grey">
        <color rgba="0.2 0.2 0.2 1"/>
      </material>
    </visual>
    <inertial>
      <mass value="5"/>
      <inertia ixx="1.0" ixy="0.0" ixz="0.0" iyy="1.0" iyz="0.0" izz="1.0"/>
    </inertial>
  </link>
  <joint name="world_to_base" type="fixed">
    <origin rpy="0 0 0" xyz="0 0 0"/>
    <parent link="world"/>
    <child link="base"/>
  </joint>
  <joint name="right_finger_joint" type="prismatic">
    <axis xyz="0 1 0"/>
    <origin xyz="0.0 -0.48 1" rpy="0.0 0.0 0.0"/>
    <parent link="base"/>
    <child link="finger_right"/>
    <limit effort="1000.0" lower="0" upper="0.38" velocity="10"/>
  </joint>
)";

const auto gripper_hardware_resources_no_command_if =
  R"(
  <ros2_control name="TestGripper" type="system">
    <joint name="right_finger_joint">
      <command_interface name="effort"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>
    <joint name="left_finger_joint">
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
  </ros2_control>
  )";

const auto gripper_hardware_resources_mimic_true_no_command_if =
  R"(
  <ros2_control name="TestGripper" type="system">
    <joint name="right_finger_joint">
      <command_interface name="effort"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>
    <joint name="left_finger_joint" mimic="true">
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
  </ros2_control>
  )";

const auto gripper_hardware_resources_mimic_true_command_if =
  R"(
  <ros2_control name="TestGripper" type="system">
    <joint name="right_finger_joint">
      <command_interface name="effort"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>
    <joint name="left_finger_joint" mimic="true">
      <command_interface name="effort"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
  </ros2_control>
  )";

const auto gripper_hardware_resources_mimic_false_command_if =
  R"(
  <ros2_control name="TestGripper" type="system">
    <joint name="right_finger_joint">
      <command_interface name="effort"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
      <state_interface name="effort"/>
    </joint>
    <joint name="left_finger_joint" mimic="false">
      <command_interface name="effort"/>
      <state_interface name="position"/>
      <state_interface name="velocity"/>
    </joint>
  </ros2_control>
  )";

const auto diff_drive_robot_sdf =
  R"(
<?xml version="1.0" ?>
<sdf version="1.8">
  <model canonical_link="base_link" name="my_robot">
    <!-- BASE -->
    <link name="base_link">
      <must_be_base_link>true</must_be_base_link>
    </link>
    <!-- CHASSIS -->
    <joint name="chassis_joint" type="fixed">
      <parent>base_link</parent>
      <child>chassis_link</child>
      <pose relative_to="base_link">0 0 0.075 0 0 0</pose>
    </joint>
    <link name="chassis_link">
      <pose relative_to="chassis_joint"/>
      <visual name="chassis_link_visual">
        <geometry>
          <box>
            <size>
                0.3 0.3 0.15
              </size>
          </box>
        </geometry>
        <material>
          <ambient>1 1 1 1</ambient>
          <diffuse>1 1 1 1</diffuse>
        </material>
      </visual>
      <collision name="chassis_link_collision">
        <geometry>
          <box>
            <size>
                0.3 0.3 0.15
              </size>
          </box>
        </geometry>
      </collision>
      <inertial>
        <mass>0.5</mass>
        <inertia>
          <ixx>0.0046875</ixx>
          <ixy>0.0</ixy>
          <ixz>0.0</ixz>
          <iyy>0.0046875</iyy>
          <iyz>0.0</iyz>
          <izz>0.0075</izz>
        </inertia>
      </inertial>
    </link>
    <!-- lEFT WHEEL -->
    <joint name="left_wheel_joint" type="revolute">
      <parent>chassis_link</parent>
      <child>left_wheel_link</child>
      <pose relative_to="chassis_link">0.09 0.16999999999999998 -0.075 -1.5707963267948966 0 0</pose>
      <axis>
        <xyz>0 0 1</xyz>
        <limit>
          <lower>-inf</lower>
          <upper>inf</upper>
        </limit>
      </axis>
    </joint>
    <link name="left_wheel_link">
      <pose relative_to="left_wheel_joint"/>
      <visual name="left_wheel_link_visual">
        <geometry>
          <cylinder>
            <radius>0.05</radius>
            <length>0.04</length>
          </cylinder>
        </geometry>
        <material>
          <ambient>0 0 1</ambient>
          <diffuse>0 0 1</diffuse>
        </material>
      </visual>
      <collision name="left_wheel_link_collision">
        <geometry>
          <cylinder>
            <radius>0.05</radius>
            <length>0.04</length>
          </cylinder>
        </geometry>
      </collision>
      <inertial>
        <mass>0.1</mass>
        <inertia>
          <ixx>7.583333333333335e-05</ixx>
          <ixy>0.0</ixy>
          <ixz>0.0</ixz>
          <iyy>7.583333333333335e-05</iyy>
          <iyz>0.0</iyz>
          <izz>0.00012500000000000003</izz>
        </inertia>
      </inertial>
    </link>
    <!-- RIGHT WHEEL -->
    <joint name="right_wheel_joint" type="revolute">
      <parent>chassis_link</parent>
      <child>right_wheel_link</child>
      <pose relative_to="chassis_link">0.09 -0.16999999999999998 -0.075 -1.5707963267948966 0 0</pose>
      <axis>
        <xyz>0 0 1</xyz>
        <!-- limit would not be specified because if the type was continuous -->
        <limit>
          <lower>-inf</lower>
          <upper>inf</upper>
        </limit>
      </axis>
    </joint>
    <link name="right_wheel_link">
      <pose relative_to="right_wheel_joint"/>
      <visual name="right_wheel_link_visual">
        <geometry>
          <cylinder>
            <radius>0.05</radius>
            <length>0.04</length>
          </cylinder>
        </geometry>
        <material>
          <ambient>0 0 1</ambient>
          <diffuse>0 0 1</diffuse>
        </material>
      </visual>
      <collision name="right_wheel_link_collision">
        <geometry>
          <cylinder>
            <radius>0.05</radius>
            <length>0.04</length>
          </cylinder>
        </geometry>
      </collision>
      <inertial>
        <mass>0.1</mass>
        <inertia>
          <ixx>7.583333333333335e-05</ixx>
          <ixy>0.0</ixy>
          <ixz>0.0</ixz>
          <iyy>7.583333333333335e-05</iyy>
          <iyz>0.0</iyz>
          <izz>0.00012500000000000003</izz>
        </inertia>
      </inertial>
    </link>
    <!-- CASTER -->
    <joint name="caster_joint" type="revolute">
      <parent>chassis_link</parent>
      <child>caster_link</child>
      <pose relative_to="chassis_link">-0.09 0 -0.075 0 0 0</pose>
      <axis>
        <xyz>1 1 1</xyz>
        <limit>
          <lower>-inf</lower>
          <upper>inf</upper>
        </limit>
      </axis>
    </joint>
    <link name="caster_link">
      <pose relative_to="caster_joint"/>
      <visual name="caster_link_visual">
        <geometry>
          <sphere>
            <radius>0.05</radius>
          </sphere>
        </geometry>
        <material>
          <ambient>0 0 1</ambient>
          <diffuse>0 0 1</diffuse>
        </material>
      </visual>
      <collision name="caster_link_collision">
        <geometry>
          <sphere>
            <radius>0.05</radius>
          </sphere>
        </geometry>
      </collision>
      <inertial>
        <mass>0.1</mass>
        <inertia>
          <ixx>0.00010000000000000002</ixx>
          <ixy>0.0</ixy>
          <ixz>0.0</ixz>
          <iyy>0.00010000000000000002</iyy>
          <iyz>0.0</iyz>
          <izz>0.00010000000000000002</izz>
        </inertia>
      </inertial>
    </link>
    <ros2_control name="GazeboSimSystem" type="system">
      <hardware>
        <plugin>gz_ros2_control/GazeboSimSystem</plugin>
      </hardware>
      <joint name="left_wheel_joint">
        <command_interface name="velocity">
          <param name="min">-10</param>
          <param name="max">10</param>
        </command_interface>
        <state_interface name="velocity"/>
        <state_interface name="position"/>
      </joint>
      <joint name="right_wheel_joint">
        <command_interface name="velocity">
          <param name="min">-10</param>
          <param name="max">10</param>
        </command_interface>
        <state_interface name="velocity"/>
        <state_interface name="position"/>
      </joint>
    </ros2_control>
    <plugin filename="libgz_ros2_control-system.so" name="gz_ros2_control::GazeboSimROS2ControlPlugin">
      <parameters>/path/to/config.yml</parameters>
    </plugin>
  </model>
</sdf>
)";

const auto minimal_robot_urdf = std::string(urdf_head) + std::string(hardware_resources) +
                                std::string(minimal_robot_transmissions) + std::string(urdf_tail);
const auto minimal_robot_urdf_no_limits = std::string(urdf_head_continuous_missing_limits) +
                                          std::string(hardware_resources) + std::string(urdf_tail);
const auto minimal_async_robot_urdf =
  std::string(urdf_head) + std::string(async_hardware_resources) + std::string(urdf_tail);
const auto minimal_robot_urdf_with_different_hw_rw_rate =
  std::string(urdf_head) + std::string(hardware_resources_with_different_rw_rates) +
  std::string(urdf_tail);
const auto minimal_uninitializable_robot_urdf =
  std::string(urdf_head) + std::string(uninitializable_hardware_resources) + std::string(urdf_tail);

const auto minimal_robot_not_existing_actuator_plugin =
  std::string(urdf_head) + std::string(hardware_resources_not_existing_actuator_plugin) +
  std::string(urdf_tail);
const auto minimal_robot_not_existing_sensors_plugin =
  std::string(urdf_head) + std::string(hardware_resources_not_existing_sensor_plugin) +
  std::string(urdf_tail);
const auto minimal_robot_not_existing_system_plugin =
  std::string(urdf_head) + std::string(hardware_resources_not_existing_system_plugin) +
  std::string(urdf_tail);

const auto minimal_robot_duplicated_component =
  std::string(urdf_head) + std::string(hardware_resources_duplicated_component) +
  std::string(urdf_tail);

const auto minimal_robot_actuator_initialization_error =
  std::string(urdf_head) + std::string(hardware_resources_not_existing_actuator_plugin) +
  std::string(urdf_tail);
const auto minimal_robot_sensor_initialization_error =
  std::string(urdf_head) + std::string(hardware_resources_sensor_initializaion_error) +
  std::string(urdf_tail);
const auto minimal_robot_system_initialization_error =
  std::string(urdf_head) + std::string(hardware_resources_system_initializaion_error) +
  std::string(urdf_tail);

const auto minimal_robot_missing_state_keys_urdf =
  std::string(urdf_head) + std::string(hardware_resources_missing_state_keys) +
  std::string(urdf_tail);

const auto minimal_robot_missing_command_keys_urdf =
  std::string(urdf_head) + std::string(hardware_resources_missing_command_keys) +
  std::string(urdf_tail);

[[maybe_unused]] const std::string TEST_ACTUATOR_HARDWARE_NAME = "TestActuatorHardware";
[[maybe_unused]] const std::string TEST_ACTUATOR_HARDWARE_TYPE = "actuator";
[[maybe_unused]] const std::string TEST_ACTUATOR_HARDWARE_PLUGIN_NAME = "test_actuator";
[[maybe_unused]] const std::vector<std::string> TEST_ACTUATOR_HARDWARE_COMMAND_INTERFACES = {
  "joint1/position", "joint1/max_velocity"};
[[maybe_unused]] const std::vector<std::string> TEST_ACTUATOR_HARDWARE_STATE_INTERFACES = {
  "joint1/position", "joint1/velocity", "joint1/some_unlisted_interface"};

[[maybe_unused]] const std::string TEST_SENSOR_HARDWARE_NAME = "TestSensorHardware";
[[maybe_unused]] const std::string TEST_SENSOR_HARDWARE_TYPE = "sensor";
[[maybe_unused]] const std::string TEST_SENSOR_HARDWARE_PLUGIN_NAME = "test_sensor";
[[maybe_unused]] const std::vector<std::string> TEST_SENSOR_HARDWARE_COMMAND_INTERFACES = {""};
[[maybe_unused]] const std::vector<std::string> TEST_SENSOR_HARDWARE_STATE_INTERFACES = {
  "sensor1/velocity"};

[[maybe_unused]] const std::string TEST_SYSTEM_HARDWARE_NAME = "TestSystemHardware";
[[maybe_unused]] const std::string TEST_SYSTEM_HARDWARE_TYPE = "system";
[[maybe_unused]] const std::string TEST_SYSTEM_HARDWARE_PLUGIN_NAME = "test_system";
[[maybe_unused]] const std::vector<std::string> TEST_SYSTEM_HARDWARE_COMMAND_INTERFACES = {
  "joint2/velocity", "joint2/max_acceleration", "joint3/velocity", "configuration/max_tcp_jerk"};
[[maybe_unused]] const std::vector<std::string> TEST_SYSTEM_HARDWARE_STATE_INTERFACES = {
  "joint2/position", "joint2/velocity",     "joint2/acceleration",       "joint3/position",
  "joint3/velocity", "joint3/acceleration", "configuration/max_tcp_jerk"};

}  // namespace ros2_control_test_assets

#endif  // ROS2_CONTROL_TEST_ASSETS__DESCRIPTIONS_HPP_