Spec for grape with http_basic auth in Rails project.

api_helper.rb

module ApiHelper
  def response
    last_response
  end

  def headers(options = {})
    username = options.fetch(:username, Rails.configuration.auth.username)
    password = options.fetch(:password, Rails.configuration.auth.password)

    { 'HTTP_AUTHORIZATION' => ActionController::HttpAuthentication::Basic.encode_credentials(username, password) }
  end

  def auth_get(route, params ={})
    get route, params, headers
  end
end

example_spec.rb

describe Example do
  include Rack::Test::Methods
  include ApiHelper

  def app
    Example
  end
  
  before do
    auth_get '/'
  end
  
  it { response.should be_ok }
end