From 864d5d4efdf542e94df47fff1f3687d72525f5de Mon Sep 17 00:00:00 2001
From: Geremia Taglialatela <tagliala.dev@gmail.com>
Date: Sun, 26 Feb 2023 20:23:18 +0100
Subject: [PATCH 1/2] Support Rails' `parsed_body` in Integration tests

Ref: https://api.rubyonrails.org/classes/ActionDispatch/TestResponse.html

Close #140
---
 lib/jsonapi/rails/railtie.rb |  7 +++++++
 spec/parsed_body_spec.rb     | 17 +++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 spec/parsed_body_spec.rb

diff --git a/lib/jsonapi/rails/railtie.rb b/lib/jsonapi/rails/railtie.rb
index 152c809..68d06fb 100644
--- a/lib/jsonapi/rails/railtie.rb
+++ b/lib/jsonapi/rails/railtie.rb
@@ -23,6 +23,7 @@ class Railtie < ::Rails::Railtie
       initializer 'jsonapi-rails.init' do |app|
         register_mime_type
         register_parameter_parser
+        register_encoder
         register_renderers
         ActiveSupport.on_load(:action_controller) do
           require 'jsonapi/rails/controller'
@@ -46,6 +47,12 @@ def register_parameter_parser
         end
       end
 
+      def register_encoder
+        ActiveSupport.on_load(:action_dispatch_integration_test) do
+          register_encoder :jsonapi, response_parser: ->(body) { JSON.parse(body) }
+        end
+      end
+
       # rubocop:disable Metrics/MethodLength
       def register_renderers
         ActiveSupport.on_load(:action_controller) do
diff --git a/spec/parsed_body_spec.rb b/spec/parsed_body_spec.rb
new file mode 100644
index 0000000..985d582
--- /dev/null
+++ b/spec/parsed_body_spec.rb
@@ -0,0 +1,17 @@
+require 'rails_helper'
+
+describe ActionController::Base, type: :controller, if: Rails.version >= '6.0' do
+  controller do
+    def index
+      render jsonapi: nil
+    end
+  end
+
+  subject(:parsed_body) { response.parsed_body }
+
+  it 'allows using parsed_body in ActionController::TestCase' do
+    get :index
+
+    expect(parsed_body).to eq(JSON.parse(response.body))
+  end
+end

From ff7a189fa314101927a7b3e7985c6186b346c32f Mon Sep 17 00:00:00 2001
From: Ben Mills <ben@unfiniti.com>
Date: Tue, 23 May 2023 14:22:49 -0600
Subject: [PATCH 2/2] Add param_encoder to register_encoder

---
 lib/jsonapi/rails/railtie.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/jsonapi/rails/railtie.rb b/lib/jsonapi/rails/railtie.rb
index 68d06fb..295383f 100644
--- a/lib/jsonapi/rails/railtie.rb
+++ b/lib/jsonapi/rails/railtie.rb
@@ -49,7 +49,9 @@ def register_parameter_parser
 
       def register_encoder
         ActiveSupport.on_load(:action_dispatch_integration_test) do
-          register_encoder :jsonapi, response_parser: ->(body) { JSON.parse(body) }
+          register_encoder :jsonapi,
+            param_encoder: -> (params) { params.to_json },
+            response_parser: -> (body) { JSON.parse(body) }
         end
       end