Add Rakefile

spec_i18n/Gemfile

@@ -2,7 +2,7 @@
 
 source 'http://rubygems.org'
 
-gemspec path: '../'
+gemspec path: '../', name: 'ruby-enum'
 
 # This Gemfile should not include any gem that has i18n as a dependency.
 gem 'rake'

spec_i18n/Rakefile

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+require 'rubygems'
+require 'bundler/gem_tasks'
+
+Bundler.setup :default, :development
+
+require 'rspec/core'
+require 'rspec/core/rake_task'
+
+RSpec::Core::RakeTask.new(:spec) do |spec|
+  spec.pattern = FileList['spec/**/*_spec.rb']
+end
+
+task default: %i[spec]