Fix RSpec mocks load order with system test

Author: Sam Phippen

lib/rspec/rails/active_record.rb

@@ -8,6 +8,7 @@ def self.initialize_activerecord_configuration(config)
         config.before :suite do
           # This allows dynamic columns etc to be used on ActiveRecord models when creating instance_doubles
           if defined?(ActiveRecord) && defined?(ActiveRecord::Base) && defined?(::RSpec::Mocks)
+            require 'rspec/mocks'
             ::RSpec::Mocks.configuration.when_declaring_verifying_double do |possible_model|
               target = possible_model.target
 

spec/rspec/rails/example/system_example_group_spec.rb

@@ -1,8 +1,9 @@
 require "spec_helper"
-
-if defined?(RSpec::Rails::SystemExampleGroup)
-  RSpec.describe RSpec::Rails::SystemExampleGroup do
-    it_behaves_like "an rspec-rails example group mixin", :system,
-      './spec/system/', '.\\spec\\system\\'
+module RSpec::Rails
+  if defined?(SystemExampleGroup)
+    RSpec.describe SystemExampleGroup do
+      it_behaves_like "an rspec-rails example group mixin", :system,
+        './spec/system/', '.\\spec\\system\\'
+    end
   end
 end