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Using Ceedling with Bazel: A Guide to Unit Testing in Embedded Projects

Discover if you can use `Ceedling` with `Bazel` for unit testing your embedded projects. Learn about the challenges and practical solutions in our detailed guide! --- This video is based on the question https://stackoverflow.com/q/68099781/ asked by the user 'Nesmo07' ( https://stackoverflow.com/u/15762855/ ) and on the answer https://stackoverflow.com/a/68119190/ provided by the user 'slsy' ( https://stackoverflow.com/u/4638604/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Can we use ceedling with Bazel? Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Can We Use Ceedling with Bazel? In the world of embedded development, unit testing plays a crucial role in ensuring code quality and reliability. Two popular tools in this space are Ceedling, which integrates Unity and CMock for unit testing, and Bazel, a powerful build tool that supports large-scale projects. Developers often face the challenge of combining these two tools effectively. In this guide, we will explore whether it's feasible to use Ceedling with Bazel, along with some potential solutions and recommendations. Understanding the Problem As an embedded engineer, you might have started with Ceedling for unit testing your codebase. You've likely appreciated its ease of use and the way it simplifies testing with the Unity and CMock libraries. But now, as you're transitioning to using Bazel for builds, a common question arises: Can I use Ceedling with Bazel? The Challenge Initial research indicates that there is no official support for integrating Ceedling directly with Bazel. This can be frustrating since switching to Bazel could provide significant benefits in build speed and efficiency, especially as your project grows. Without documented support, you may feel stuck between the success you've found with Ceedling and the promise of Bazel's powerful features. Exploring Solutions Although there is no ready-to-use solution for using Ceedling directly with Bazel, here are some options to consider: 1. Custom Rules for Integration Writing Custom Bazel Rules: One of the possibilities is to create your own Bazel build rules for the elements of your project that rely on Ceedling. This could allow you to keep using Ceedling features while benefiting from Bazel's build system. Resource Intensive: However, creating custom rules can be time-consuming and may lead to complexities down the line when maintaining your project. 2. Transitioning to Bazel Rules Rewriting to Bazel-Friendly Structures: A more straightforward solution may be to completely rewrite your unit testing setup from Ceedling to use Bazel natively. While this would require an upfront investment of time and effort, it often leads to greater maintainability and efficiency in the long run. Utilizing Bazel's Built-In Features: By leveraging Bazel’s features such as dependency management and incremental builds, you can create a robust testing framework tailored to your specific needs. Conclusion While the lack of support for using Ceedling with Bazel presents a challenge, it is essential to weigh your options carefully. Whether you choose to invest time in creating custom rules or rewrite your testing setup for Bazel, the goal remains the same: ensuring your embedded code remains robust and reliable through effective unit testing. Ultimately, the decision depends on your project scope and the resources available. Transitioning to Bazel rules can seem daunting, but it may be the best step forward for maintainability and efficiency down the road. In summary, while there's currently no official support for Ceedling with Bazel, exploring custom integration or transitioning to Bazel testing workflows can lead to long-term success in your unit testing efforts.