Handle flash messages on welcome page (#1295)

app/views/layouts/welcome.html.erb

@@ -6,7 +6,7 @@
     <meta name="viewport" content="width=device-width,initial-scale=1">
     <%= csrf_meta_tags %>
     <%= csp_meta_tag %>
-    
+
     <link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/font/bootstrap-icons.css">
 
@@ -33,6 +33,13 @@
     <%= render partial: 'shared/banner' %>
     <%= render partial: 'shared/header' %>
     <%= render partial: 'shared/emulator' %>
+
+    <% if flash[:notice] %>
+      <div class="alert alert-primary" role="alert" ><%= flash[:notice] %></div>
+    <% elsif flash[:alert] %>
+      <div class="alert alert-warning" role="alert"><%= flash[:alert] %></div>
+    <% end %>
+
     <%= yield %>
 
     <div class="welcome-footer"><%= render partial: 'shared/footer' %></div>

spec/system/welcome_spec.rb

@@ -273,5 +273,14 @@
         expect(page).to have_content "Administration"
       end
     end
+
+    context "flash message" do
+      let(:non_admin_user) { FactoryBot.create(:user) }
+      it "shows the flash message" do
+        sign_in non_admin_user
+        visit "/projects"
+        expect(page).to have_content("Access Denied")
+      end
+    end
   end
 end