param_spec.rb in grape-0.12.0

- old
+ new

@@ -1,8 +1,8 @@
 require 'spec_helper'
 
 describe Grape::Middleware::Versioner::Param do
-  let(:app) { lambda { |env| [200, env, env['api.version']] } }
+  let(:app) { ->(env) { [200, env, env['api.version']] } }
   subject { Grape::Middleware::Versioner::Param.new(app, @options || {}) }
 
   it 'sets the API version based on the default param (apiver)' do
     env = Rack::MockRequest.env_for('/awesome', params: { 'apiver' => 'v1' })
     expect(subject.call(env)[1]['api.version']).to eq('v1')