ROS 2 Testing Strategy

Source: ros2-copilot-skills ROS 2 testing skill

Why This Matters

Robotics code needs multiple levels of testing because failures often live in integration boundaries rather than single functions. A good testing strategy makes those boundaries visible and routinely exercised.

Distilled Takeaways

• Different ROS 2 tests answer different questions: logic, launch behavior, graph integration, or simulated operation.
• Testing should reflect the architecture of the robot, not just the language used.
• Integration and launch tests are especially valuable in ROS 2 systems.
• Test strategy is strongest when tied to likely regressions, not generic coverage goals.

Practical Guidance

• Use unit tests for logic and fast feedback.
• Add launch and integration tests where graph behavior matters.
• Use simulation selectively to test multi-node workflows.
• Keep the most valuable tests in CI so contributors get immediate signals.

Corroborating References

• ROS 2 testing tutorials
• ament_cmake documentation

When to Read the Original Source

Go to the original skill when you want the practical test-mix guidance and the reasons certain ROS 2 tests catch the failures that unit tests miss.