Contributing GuideTestingRSpecOn this pageRSpecTests & CoverageTestsRun bin/rails db:create RAILS_ENV=testRun bin/rails db:migrate RAILS_ENV=testRun bundle exec rspecCoverageRun COVERAGE=true bundle exec rspecOpen coverage/index.html(open coverage/index.html in MacOS and xdg-open coverage/index.html in Debian/Ubuntu)