add item set and menu item set CRUD

spec/views/settings/menu_item_sets/edit.html.erb_spec.rb

@@ -0,0 +1,21 @@
+require 'rails_helper'
+
+RSpec.describe "settings/menu_item_sets/edit", type: :view do
+  before(:each) do
+    @settings_menu_item_set = assign(:settings_menu_item_set, Settings::MenuItemSet.create!(
+      :item_set_id => nil,
+      :menu_item_id => nil
+    ))
+  end
+
+  it "renders the edit settings_menu_item_set form" do
+    render
+
+    assert_select "form[action=?][method=?]", settings_menu_item_set_path(@settings_menu_item_set), "post" do
+
+      assert_select "input[name=?]", "settings_menu_item_set[item_set_id_id]"
+
+      assert_select "input[name=?]", "settings_menu_item_set[menu_item_id_id]"
+    end
+  end
+end