How can I use SimpleCov for advanced coverage analysis in Rails?

How can I use SimpleCov for advanced coverage analysis in Rails?

You can use SimpleCov in Rails by configuring it in your test_helper.rb or spec_helper.rb file. For advanced usage, you can customize the coverage report by adding filters, groups, and merging results from different test suites.

What are some common configurations I should consider?

Common configurations include setting up filters to exclude certain files, grouping files by their directory structure, and merging coverage results from different test runs to get a comprehensive report.

Can I generate an HTML report with SimpleCov?

Yes, SimpleCov automatically generates an HTML report in the coverage directory after your tests run. You can open the index.html file in a browser to view it.

How do I integrate SimpleCov with CI/CD pipelines?

To integrate SimpleCov with CI/CD, ensure that your CI environment runs the tests with SimpleCov enabled. You can then upload the coverage reports as artifacts or use tools like Codecov or Coveralls for better visualization.