Ensure Code Quality: Uncover Untested Areas with SimpleCov

SimpleCov is a Ruby code coverage tool that acts like a detective, identifying used and unused code during testing. Get a report on coverage percentage, files, and their testing status. Use SimpleCov to find untested areas, remove unused code, and write more reliable software.
Ensure Code Quality: Uncover Untested Areas with SimpleCov
Last updated 01:02 26/06/2024 GMT+7

Have you ever wondered if all the rules you write are actually enforced? That’s where SimpleCov comes in.

What is SimpleCov?

SimpleCov is a tool for Ruby programmers. It’s like a detective looking at your code and identifying usable and unusable parts.

While Ruby offers a built-in Coverage library, SimpleCov streamlines the process. It provides an easy-to-use interface for filtering, grouping, formatting, and displaying coverage data. This lets you set up a comprehensive code coverage suite with minimal effort (just a couple of lines of code!). For more information, visit https://github.com/simplecov-ruby/simplecov

How does it work?

  1. You add SimpleCov to your project.
  2. You do your tests as usual.
  3. SimpleCov checks which parts of your code are used during testing.
  4. It creates a report that lists used (covered) and unused parts.

What is the status of the report?

Generally the report shows:

  • A percentage of how much your code has been tested
  • A list of files, with a label indicating how well each file is covered
    • Green claims it has been fully tested
    • Yellow indicates partial testing
    • Red indicates no maintenance at all

Why should you care?

Using SimpleCov can help you:

  • Find the parts of your code that you forgot to test
  • Remove unused code
  • Be more confident that your program is working properly

SimpleCov is a handy tool that helps programmers ensure their code is properly tested. With tools like SimpleCov, programmers can write better, more reliable software!