add item set with scaffold

spec/views/settings/item_sets/show.html.erb_spec.rb

@@ -0,0 +1,18 @@
+require 'rails_helper'
+
+RSpec.describe "settings/item_sets/show", type: :view do
+  before(:each) do
+    @settings_item_set = assign(:settings_item_set, Settings::ItemSet.create!(
+      :name => "Name",
+      :min_selectable_qty => 2,
+      :max_selectable_qty => 3
+    ))
+  end
+
+  it "renders attributes in <p>" do
+    render
+    expect(rendered).to match(/Name/)
+    expect(rendered).to match(/2/)
+    expect(rendered).to match(/3/)
+  end
+end