it "works with output of find calle with a search pattern" do
        FS.makedirs('foo/bar')
        FS.makedir('foo/baz')
        FS.touch('foo/bar/ruby1.rb')
        FS.touch('foo/ruby2.rb')
        FS.makedir('git')
        FS.to_tree(FS.find('.', "*.rb") - FS.find('.','git/**/*').should == <<EOF
`--foo/
   |--bar/
   |  `--ruby1.rb
   `--ruby2.rb
EOF
      end