From 10768aa20418a5c3d547da33d80b9ebe3f34efb0 Mon Sep 17 00:00:00 2001
From: "Akihiko Odaki (@fn_aki@pawoo.net)" <akihiko.odaki.4i@stu.hosei.ac.jp>
Date: Fri, 2 Jun 2017 03:56:55 +0900
Subject: [PATCH] Spec response for forgery (#3248)

Remove protect_from_forgery in ApiController, which is disabled by the
following skip_before_action, as well.
---
 app/controllers/api_controller.rb              |  2 --
 spec/controllers/api_controller_spec.rb        | 18 ++++++++++++++++++
 .../controllers/application_controller_spec.rb | 10 ++++++++++
 3 files changed, 28 insertions(+), 2 deletions(-)
 create mode 100644 spec/controllers/api_controller_spec.rb

diff --git a/app/controllers/api_controller.rb b/app/controllers/api_controller.rb
index 1c67b6fdc6..1e72549bd9 100644
--- a/app/controllers/api_controller.rb
+++ b/app/controllers/api_controller.rb
@@ -4,8 +4,6 @@ class ApiController < ApplicationController
   DEFAULT_STATUSES_LIMIT = 20
   DEFAULT_ACCOUNTS_LIMIT = 40
 
-  protect_from_forgery with: :null_session
-
   skip_before_action :verify_authenticity_token
   skip_before_action :store_current_location
 
diff --git a/spec/controllers/api_controller_spec.rb b/spec/controllers/api_controller_spec.rb
new file mode 100644
index 0000000000..1026afbbc7
--- /dev/null
+++ b/spec/controllers/api_controller_spec.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe ApiController, type: :controller do
+  controller do
+    def success
+      head 200
+    end
+  end
+
+  it 'does not protect from forgery' do
+    ActionController::Base.allow_forgery_protection = true
+    routes.draw { post 'success' => 'api#success' }
+    post 'success'
+    expect(response).to have_http_status(:success)
+  end
+end
diff --git a/spec/controllers/application_controller_spec.rb b/spec/controllers/application_controller_spec.rb
index 83ec02401d..9370dcdadf 100644
--- a/spec/controllers/application_controller_spec.rb
+++ b/spec/controllers/application_controller_spec.rb
@@ -37,6 +37,16 @@ describe ApplicationController, type: :controller do
     end
   end
 
+  context 'forgery' do
+    subject do
+      ActionController::Base.allow_forgery_protection = true
+      routes.draw { post 'success' => 'anonymous#success' }
+      post 'success'
+    end
+
+    include_examples 'respond_with_error', 422
+  end
+
   it "does not force ssl if LOCAL_HTTPS is not 'true'" do
     routes.draw { get 'success' => 'anonymous#success' }
     ClimateControl.modify LOCAL_HTTPS: '' do