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config.ruで色々やってるrackアプリケーションをrspecでうまくテストする

Last updated at Posted at 2015-10-29

概要

config.ru内で色々設定している場合、単純にrackアプリケーションのインスタンスを作成してもうまく動作しないときはRack::Builder.parse_fileを使おう

config.ru

config.ru
use Rack::Reloader
use AppLog, logger
use Rack::CommonLogger, logger
use Rack::Config do |env|
  env['fugafuga.app_dir'] = File.dirname(__FILE__) #この辺りが設定されない
end

map '/hogehoge' do #ここも設定されない
  run hogehoge::fuga.new
end

map '/foobar' do #ここも設定されない
  run foobar::Server.new
end

通常のパターン

specfile.rb
describe 'テスト'
  def app
    @app ||= MainApp #rackアプリケーションのインスタンス
  end
.
.
.
end

Rack::Builder.parse_fileを使う

specfile.rb
describe 'テスト'
  APPS = Rack::Builder.parse_file(File.expand_path("#{File.dirname(__FILE__)}/../config.ru")) #config.ruへのパス

  def app
    APPS.first #APPS[0](=APPS.first)→rackアプリケーションのインスタンス
  end
.
.
.
end
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