rake task でridgepole 実行

こちらの記事を参考に以下を修正しました。(ほぼ同じ)
- Rails.envを考慮
- annotateを実行
- 出力をsplit
- rspecの前に流す

lib/tasks/ridgepole.rake

# frozen_string_literal: true

# see https://qiita.com/lhside/items/0dcad79d9b801e34bc7c
namespace :ridgepole do
  desc 'Apply database schema'
  task apply: :environment do
    ridgepole('--apply', "-E #{Rails.env}", "--file #{schema_file}")
    Rake::Task['db:schema:dump'].invoke if Rails.env.development?
    Rake::Task['annotate_models'].invoke if Rails.env.development?
  end

  desc 'Export database schema'
  task export: :environment do
    ridgepole('--export', "-E #{Rails.env}", '--split', "--output #{schema_file}")
  end

  private def schema_file
    Rails.root.join('db/schema/Schemafile') # rubocop:disable Rails/FilePath
  end

  private def config_file
    Rails.root.join('config/database.yml') # rubocop:disable Rails/FilePath
  end

  private def ridgepole(*options)
    command = ['bundle exec ridgepole', "--config #{config_file}"]
    system [command + options].join(' ')
  end
end

spec/spec_helper.rb

# frozen_string_literal: true

require 'rake'

## ~~~~略~~~~
RSpec.configure do |config|
  config.before(:suite) do
    Rails.application.load_tasks
    Rake.application['ridgepole:apply'].invoke
## ~~~~略~~~~