エラーページ（404/500/422）のリクエストテストを追加

Author: nacchan99

config/routes.rb

@@ -106,4 +106,10 @@
   # Check development sent emails
   mount LetterOpenerWeb::Engine, at: "/letter_opener" if Rails.env.development?
   mount Rambulance::Engine => "/"
+
+  if Rails.env.development? || Rails.env.test?
+    get "/trigger_500", to: ->(env) { raise "Triggering 500 error" }
+    get "/trigger_422", to: "errors#unprocessable_entity"
+  end
+
 end

spec/requests/errors_spec.rb

@@ -4,12 +4,25 @@
   include Rambulance::TestHelper
 
   describe "Error requests" do
-    it 'should render a corresponding error page' do
+    it 'renders the 404 error page' do
       with_exceptions_app do
         get '/does_not_exist'
       end
+      expect(response.status).to eq(404)
+    end
 
-      assert_equal 404, response.status
+    it 'renders the 422 error page' do
+      with_exceptions_app do
+        get '/trigger_422'
+      end
+      expect(response.status).to eq(422)
+    end
+
+    it 'renders the 500 error page' do
+      with_exceptions_app do
+        get '/trigger_500'
+      end
+      expect(response.status).to eq(500)
     end
   end
 end