PhantomDep

Detect your phantom dependencies(gems not in use).

Installation

Add this line to your application's Gemfile:

gem 'phantom_dep', git: 'https://github.com/rosylilly/phantom_dep'

And then execute:

$ bundle

Usage

1. Add PhantomDep to your Gemfile
2. Load and launch PhantomDep at the very top of your test/test_helper.rb (or spec_helper.rb, rails_helper, cucumber env.rb, or whatever your preferred test framework uses):

   require 'phantom_dep'
   PhantomDep.start
   
   # Previous content of test helper now starts here

3. Run your tests

Example output

$ bundle exec rspec

PhantomDep
  has a version number

Finished in 0.00335 seconds (files took 0.56329 seconds to load)
1 example, 0 failures


Gems not in use
 * simplecov (v0.16.1)

Coverage report generated for RSpec to ./coverage. 88 / 88 LOC (100.0%) covered.

Customize

You can configure PhantomDep with start block

PhantomDep.start do |pd|
  pd.ignore 'rspec'
end

• ignore: Ignore a gem of gems not in use

  PhantomDep.start do |pd|
    pd.ignore 'rspec'
    pd.ignore 'simplecov'
  end

• include_dependencies: Collect gem using by all dependencies(deps by deps).

  PhantomDep.start do |pd|
    pd.include_dependencies = true
  end

• formatters: Set formatters(default: [PhantomDep::Formatter::TextFormatter]

  PhantomDep.start do |pd|
    pd.formatters = []
  end

• auto_report: Show report at exit(default: true)

  pd = PhantomDep.new
  pd.auto_report = false
  pd.start
  
  at_exit { pd.report }

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/rosylilly/phantom_dep.

License

The gem is available as open source under the terms of the MIT License.