Minitest::Filesystem

Adds assertions and expectations to check filesystem content in a communicative way.

Installation

Add this line to your application's Gemfile:

gem 'minitest-filesystem'

And then execute:

$ bundle

Or install it yourself as:

$ gem install minitest-filesystem

Once the gem is installed, just add this line to your test_helper.rb:

require 'minitest/filesystem'

Let's suppose the following filesystem structure exists:

You can check if root_dir contains a specific structure:

assert_contains_filesystem("root_dir") do
  file "file_1"
  dir "subdir_1" do
    file "subfile_1"
  end
  dir "subdir_2"
end

or, if you prefer the expectation style:

filesystem {
  file "file_1"
  dir "subdir_1" do
    file "subfile_1"
  end
  dir "subdir_2"
}.must_exist_within "root_dir"

Note that the match need not to be exact (i.e. there can be other files and directories inside root_dir that the matcher won't care about).