Showing alert for physical providers with invalid credentials

app/controllers/ems_physical_infra_controller.rb

@@ -18,6 +18,21 @@ def self.table_name
     @table_name ||= "ems_physical_infra"
   end
 
+  def show_list
+    super
+    check_providers_credentials
+  end
+
+  # Check if there are providers with invalid credentials
+  # if it's true, adds an alert message to user
+  def check_providers_credentials
+    model.find_each do |provider|
+      if provider.authentication_status.casecmp("invalid").zero?
+        add_flash(_("The provider \"%{name}\" is with invalid credentials") % {:name => provider.name}, :error)
+      end
+    end
+  end
+
   def ems_path(*args)
     ems_physical_infra_path(*args)
   end

spec/controllers/ems_physical_infra_controller_spec.rb

@@ -84,9 +84,16 @@
     before(:each) do
       stub_user(:features => :all)
       FactoryGirl.create(:ems_vmware)
+      @provider = FactoryGirl.create(:ems_physical_infra, :with_invalid_authentication)
       get :show_list
     end
     it { expect(response.status).to eq(200) }
+
+    context "show provider with invalid credentials" do
+      it "shows an alert to user" do
+        expect(assigns(:flash_array).first[:message]).to include("The provider \"#{@provider.name}\" is with invalid credentials")
+      end
+    end
   end
 
   describe "breadcrumbs path on a 'show' page of an Physical Infrastructure Provider accessed from Dashboard maintab" do