mbj/mutant

Left: 100% test coverage Right: Mutation testing finds changes the existing tests fail to catch. You can explore the code behind these reports here:

I agree and I'm the author of some pretty heavy ruby syntax tooling ;)

mutation testing in Ruby is now so cheap that there are no reasons not to do it still unconvinced? watch this @szymonfiedler talk at @rbqconf why not to have a proper test coverage if it’s almost…

Unparser promises this invariant: `forall code . parse(code) = parse(unparse(parse(code))` And there are some very hard to deal with "remote effects in the ruby syntax". Where a construction deep…