什么是ruby测试工具，它“破坏”了代码以查看测试的紧密程度？

Question

A wee while ago I ended up on a page which hosted several ruby tools, which had 'crazy' names like 'mangler' or 'executor' or something. The tool's job was to modify you production code (at runtime) in order to prove that your tests were precise.

Unfortunately I would now like to find that tool again, but can't remember what it was called. Any ideas?

Answer 1

I think you're thinking about Heckle, which flips your code to make sure your tests are accurate. Here:

http://seattlerb.rubyforge.org/heckle/

Answer 2

Maybe you're thinking of the Flay project and related modules:

http://ruby.sadi.st/Ruby_Sadist.html

Answer 3

Also you can try my mutant . Its AST based and currently runs under MRI and RBX in > 2.0 mode. It only has a killer for rspec3, but others are possible also.