Fix up tests

lib/aws/rails/middleware/elastic_beanstalk_sqsd.rb

@@ -16,7 +16,7 @@ def initialize(app)
         end
 
         def call(env)
-          request = ActionDispatch::Request.new(env)
+          request = ::ActionDispatch::Request.new(env)
           return @app.call(env) unless from_sqs_daemon?(request)
 
           @logger.debug('aws-sdk-rails middleware detected a call from the Elastic Beanstalk SQS Daemon.')

test/aws/rails/elastic_beanstalk_sqsd_test.rb → spec/aws/rails/elastic_beanstalk_sqsd_spec.rb

@@ -1,9 +1,11 @@
 # frozen_string_literal: true
 
+require 'test_helper'
+
 module Aws
   module Rails
     module Middleware
-      class ElasticBeanstalkSQSDTest < ActiveSupport::TestCase
+      describe ElasticBeanstalkSQSD do
         # Simple mock Rack app that always returns 200
         let(:mock_rack_app) { ->(_) { [200, { 'Content-Type' => 'text/plain' }, ['OK']] } }