Add test to demonstrate issue with SqlLiterals

Author: lgebhardt

test/controllers/controller_test.rb

@@ -3575,3 +3575,15 @@ def test_whitelisted_error_in_controller
     $PostProcessorRaisesErrors = false
   end
 end
+
+class Api::V6::PostsControllerTest < ActionController::TestCase
+  def test_with_sql_fragment
+    get :index, params: {include: 'section'}
+    assert_response :success
+  end
+
+  def test_caching_with_sql_fragment
+    assert_cacheable_get :index, params: {include: 'section'}
+    assert_response :success
+  end
+end

test/fixtures/active_record.rb

@@ -755,6 +755,9 @@ class IsoCurrenciesController < JSONAPI::ResourceController
   end
 
   module V6
+    class PostsController < JSONAPI::ResourceController
+    end
+
     class CustomersController < JSONAPI::ResourceController
     end
 
@@ -1459,6 +1462,18 @@ class EmployeeResource < EmployeeResource; end
 
 module Api
   module V6
+    class PersonResource < PersonResource; end
+    class TagResource < TagResource; end
+    class SectionResource < SectionResource; end
+    class CommentResource < CommentResource; end
+
+    class PostResource < PostResource
+      # Test caching with SQL fragments
+      def self.records(options = {})
+        super.joins('INNER JOIN people on people.id = author_id')
+      end
+    end
+
     class CustomerResource < JSONAPI::Resource
       attribute :name
 

test/test_helper.rb

@@ -321,6 +321,7 @@ class CatResource < JSONAPI::Resource
 
     JSONAPI.configuration.route_format = :dasherized_route
     namespace :v6 do
+      jsonapi_resources :posts
       jsonapi_resources :customers
       jsonapi_resources :purchase_orders
       jsonapi_resources :line_items