README.markdown

Path: README.markdown
Last Update: Sat Oct 09 10:08:55 +0000 2010

FakeFS

Mocha is great. But when your library is all about manipulating the filesystem, you really want to test the behavior and not the implementation.

If you‘re mocking and stubbing every call to FileUtils or File, you‘re tightly coupling your tests with the implementation.

    def test_creates_directory
      FileUtils.expects(:mkdir).with("directory").once
      Library.add "directory"
    end

The above test will break if we decide to use `mkdir_p` in our code. Refactoring code shouldn‘t necessitate refactoring tests.

With FakeFS:

    def test_creates_directory
      Library.add "directory"
      assert File.directory?("directory")
    end

Woot.

Usage

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