http_helpers.rb

module HttpHelpers
  def authenticate user
    params = { email: user.email, password: 'test_password' }
    post '/auth', params

    @auth_token = json_body.dig :meta, :'auth-token'
  end

  def authed_get endpoint, opts = {}
    get endpoint, opts, auth_header
  end

  def authed_post endpoint, opts = {}
    post endpoint, jsonapify(opts), auth_header
  end

  def authed_patch endpoint, opts = {}
    patch endpoint, jsonapify(opts), auth_header
  end

  def authed_delete endpoint, opts = {}
    delete endpoint, opts, auth_header
  end

  private

  def auth_header
    { 'Authorization' => @auth_token,
      'CONTENT_TYPE' => 'application/vnd.api+json' }
  end

  private

  def jsonapify opts
    data = opts.slice(:type, :id, :attributes, :relationships)
    data = data.deep_transform_keys { |key| key.to_s.dasherize.to_sym }
    { data: data }.to_json
  end
end

RSpec.configure do |config|
  config.include HttpHelpers
end