Delegate some methods of User to @settings (#5706)

* Move some tests of User into Settings::ScopedSettings

* Add a test for User@settings

spec/lib/settings/scoped_settings_spec.rb

@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Settings::ScopedSettings do
+  let(:object)         { Fabricate(:user) }
+  let(:scoped_setting) { described_class.new(object) }
+  let(:val)            { 'whatever' }
+  let(:methods)        { %i(auto_play_gif default_sensitive unfollow_modal boost_modal delete_modal reduce_motion system_font_ui noindex theme) }
+
+  describe '.initialize' do
+    it 'sets @object' do
+      scoped_setting = described_class.new(object)
+      expect(scoped_setting.instance_variable_get(:@object)).to be object
+    end
+  end
+
+  describe '#method_missing' do
+    it 'sets scoped_setting.method_name = val' do
+      methods.each do |key|
+        scoped_setting.send("#{key}=", val)
+        expect(scoped_setting.send(key)).to eq val
+      end
+    end
+  end
+
+  describe '#[]= and #[]' do
+    it 'sets [key] = val' do
+      methods.each do |key|
+        scoped_setting[key] = val
+        expect(scoped_setting[key]).to eq val
+      end
+    end
+  end
+end

spec/models/user_spec.rb

@@ -177,27 +177,10 @@ RSpec.describe User, type: :model do
     end
   end
 
-  describe '#setting_auto_play_gif' do
-    it 'returns auto-play gif setting' do
+  describe 'settings' do
+    it 'is instance of Settings::ScopedSettings' do
       user = Fabricate(:user)
-      user.settings[:auto_play_gif] = false
-      expect(user.setting_auto_play_gif).to eq false
-    end
-  end
-  
-  describe '#setting_system_font_ui' do
-    it 'returns system font ui setting' do
-      user = Fabricate(:user)
-      user.settings[:system_font_ui] = false
-      expect(user.setting_system_font_ui).to eq false
-    end
-  end
-
-  describe '#setting_boost_modal' do
-    it 'returns boost modal setting' do
-      user = Fabricate(:user)
-      user.settings[:boost_modal] = false
-      expect(user.setting_boost_modal).to eq false
+      expect(user.settings).to be_kind_of Settings::ScopedSettings
     end
   end
 
@@ -219,22 +202,6 @@ RSpec.describe User, type: :model do
     end
   end
 
-  describe '#setting_unfollow_modal' do
-    it 'returns unfollow modal setting' do
-      user = Fabricate(:user)
-      user.settings[:unfollow_modal] = true
-      expect(user.setting_unfollow_modal).to eq true
-    end
-  end
-
-  describe '#setting_delete_modal' do
-    it 'returns delete modal setting' do
-      user = Fabricate(:user)
-      user.settings[:delete_modal] = false
-      expect(user.setting_delete_modal).to eq false
-    end
-  end
-
   describe 'whitelist' do
     around(:each) do |example|
       old_whitelist = Rails.configuration.x.email_whitelist