class ActiveRecord::ConnectionAdapters::ConnectionManagement

def call(env)
  @app.call(env)
ensure
  # Don't return connection (and peform implicit rollback) if
  # this request is a part of integration test
  unless env.key?("rack.test")
    ActiveRecord::Base.clear_active_connections!
  end
end

def initialize(app)
  @app = app
end