Minimum coverage by group check

[mikhliuk-k]

I added support for coverage checking by group since we needed it for our project and noticed there was an open issue about it. This feature is useful as we’re gradually increasing test coverage across our app, so we can enforce coverage checks on specific parts. Here’s an example of how to use it from the README.

SimpleCov.minimum_coverage_by_group 'Models' => 80, 'Controllers' => 60
# same as above (the default is to check line coverage)
SimpleCov.minimum_coverage_by_group 'Models' => { line: 80 }, 'Controllers' => { line: 60 }
# check for a minimum line and branch coverage for 'Models' and 'Controllers' groups
SimpleCov.minimum_coverage_by_group 'Models' => { line: 90, branch: 80 }, 'Controllers' => { line: 60, branch: 50 }

[coorasse]

Lovely! This is also helpful when enabling the new coverage for eval. So we can enable coverage for erb files without dropping the global coverage.