If you are following the principles of Sitecore Helix, which of the following statements is true about testing new code and dependencies in your solution?

In the context of Sitecore Helix, it is essential to understand the modular architecture and the principle of isolation concerning dependencies. The correct answer is based on the understanding that when functioning within a Helix-structured solution, each module is designed to encapsulate its features and dependencies, thus allowing for more focused changes and testing.

When new code is added, it is sufficient to change only the specific part of the solution associated with that new code because the dependencies are clearly defined and managed within the module. This means that if you are aware of your module's boundaries and how it interacts with other modules, you can effectively identify how the new implementation will affect only that section of the code. Helix promotes a clear separation of concerns, so you do not need to address or test areas of the solution unrelated to your changes, which allows for streamlined testing and reduces the potential for introducing new issues in other parts of the codebase.

This approach enhances maintainability and speeds up the development process as it minimizes the workload involved in regression testing since only the relevant module needs to be addressed. Hence, in a well-structured Helix environment, understanding and leveraging these principles is paramount for efficient development and deployment.