Create cooling_mode_to_human method in IsletDecorator

app/decorators/islet_decorator.rb

@@ -19,4 +19,10 @@ def cooling_modes_options_for_select
       end
     end
   end
+
+  def cooling_mode_to_human
+    return Islet.human_attribute_name("cooling_mode.blank") unless (c_m = cooling_mode.presence)
+
+    Islet.human_attribute_name("cooling_mode.#{c_m}")
+  end
 end

app/views/islets/show.html.erb

@@ -18,13 +18,7 @@
           <% end %>
 
           <dt class="pb-2"><%= Islet.human_attribute_name(:cooling_mode) %></dt>
-          <dd class="mb-0 pb-2 ps-3">
-            <% if @islet.cooling_mode.present? %>
-              <%= Islet.human_attribute_name("cooling_mode.#{@islet.cooling_mode}") %>
-            <% else %>
-              <%= Islet.human_attribute_name("cooling_mode.blank") %>
-            <% end %>
-          </dd>
+          <dd class="mb-0 pb-2 ps-3"><%= @islet.decorated.cooling_mode_to_human %></dd>
         </dl>
       <% end %>
     </div>

spec/decorators/islet_decorator_spec.rb

@@ -3,6 +3,9 @@
 require "rails_helper"
 
 RSpec.describe IsletDecorator, type: :decorator do
+  let(:islet) { islets(:one) }
+  let(:decorated_islet) { islet.decorated }
+
   describe ".grouped_by_sites_options_for_select" do
     let(:expected_response) do
       {
@@ -16,4 +19,18 @@
   describe ".cooling_modes_options_for_select" do
     it { expect(described_class.cooling_modes_options_for_select.pluck(1)).to match_array(Islet.cooling_modes.keys) }
   end
+
+  describe "#cooling_mode_to_human" do
+    subject(:cooling_mode_sentence) { decorated_islet.cooling_mode_to_human }
+
+    context "with no cooling mode" do
+      it { is_expected.to eq("Pas de confinement") }
+    end
+
+    context "with cooling mode set" do
+      before { islet.cooling_mode = "hot_containment" }
+
+      it { is_expected.to eq("Confinement chaud") }
+    end
+  end
 end