Mocha CLI Advanced Usage Mastery Hub: The Industry Foundatio

When running Mocha tests from the CLI, what is the primary benefit of using the `--parallel` flag in a high-concurrency environment, and what potential pitfalls should be considered?

The primary benefit is indeed faster feedback loops. However, a crucial consideration in parallel execution is the potential for race conditions when tests inadvertently rely on or modify shared mutable state. Option A is incorrect because `--parallel` does the opposite of sequential execution. Option C is incorrect; while `--parallel` can increase memory usage, it doesn't inherently prevent out-of-memory errors by loading all files at once; in fact, it might exacerbate them if not managed. Option D is incorrect; while Mocha can provide profiling information, `--parallel`'s main function is not profiling but concurrent execution. Question: Consider a scenario where you have a complex test suite with interdependent tests. How would you effectively isolate specific test files or directories for focused debugging using the Mocha CLI, while ensuring that only the intended tests are executed?

In a production build pipeline, you need to ensure that only tests marked as "integration" are executed. Which Mocha CLI option, combined with a suitable test naming convention, would be the most robust solution for this requirement?