Rakefile

#!/usr/bin/env rake
require 'activeadmin'
require 'rspec/core/rake_task'

desc 'Creates a test rails app for the specs to run against'
task :setup do
  require 'rails/version'
  system('mkdir spec/rails') unless File.exist?('spec/rails')
  system "bundle exec rails new spec/rails/rails-#{Rails::VERSION::STRING} -m spec/support/rails_template_with_data.rb"
end

RSpec::Core::RakeTask.new
task default: :spec
task test: :spec

desc 'build the gem'
task :build do
  system 'gem build activeadmin-axlsx.gemspec'
end
desc 'build and release the gem'
task release: :build do
  system "gem push activeadmin-axlsx-#{ActiveAdmin::Axlsx::VERSION}.gem"
end