rcov is a code coverage tool for Ruby. It is commonly used for viewing overall test coverage of target code. It features:
- fast execution: 20-300 times faster than previous tools
- multiple analysis modes: standard, bogo-profile, “intentional testing”, dependency analysis…
- detection of uncovered code introduced since the last run (“differential code coverage”)
- fairly accurate coverage information through code linkage inference using simple heuristics
- cross-referenced XHTML and several kinds of text reports
- support for easy automation with Rake and Rant
- colorblind-friendliness
