Rakefile

#!/usr/bin/env rake
require 'rubygems'
require 'bundler'
require 'bundler/gem_tasks'

begin
  Bundler.setup(:default, :development)
rescue Bundler::BundlerError => e
  $stderr.puts e.message
  $stderr.puts 'Run `bundle install` to install missing gems'
  exit e.status_code
end

require 'rake'
require 'rspec/core/rake_task'

RSpec::Core::RakeTask.new(:spec)

desc 'Run RSpec with code coverage'
task :coverage do
  ENV['COVERAGE'] = 'true'
  Rake::Task['spec'].execute
end

task(:default).clear
task default: [:spec]