Question

I’ve got a document management system which I programmed in Rails 2.3.8 a while ago and I’ve been retrofitting some rspec tests to the project before refactoring and making enhancements.

The problem is a lot of my tests require stubbing out most of the File & FileUtils libraries as there is a lot of file interaction within models. Is there a better way to test File & Directory actions without having to touch the filesystem at all?

For instance I stub out mkdir_p:

FileUtils.stub!(:mkdir_p)

And when I’m moving I use something like this:

 FileUtils.should_receive(:mv).with("from path","to path")

Answer 1

Use fakefs. It’s perfect for the purpose.