add splash screen to the casting calls

spec/controllers/casting_calls_controller_spec.rb

@@ -18,7 +18,7 @@ RSpec.describe CastingCallsController, type: :controller do
       expect(response).to be_successful
     end
 
-    it "renders content" do
+    it "renders content if there are existing broadcasts" do
       create(:casting_call, project: project)
 
       get :index, params: { project_id: project }
@@ -36,6 +36,18 @@ RSpec.describe CastingCallsController, type: :controller do
         expect(response.body).to have_link("2", href: project_casting_calls_path(project, page: 2))
       end
     end
+
+    context "when there are no records" do
+      it "renders splash screen" do
+        CastingCall.destroy_all
+
+        get :index, params: { project_id: project }
+
+        expect(response.body).not_to have_content no_casting_calls_message
+        expect(response.body).to have_link create_casting_call
+        expect(response.body).to have_link schedule_demo
+      end
+    end
   end
 
   describe "#new" do
@@ -117,4 +129,16 @@ RSpec.describe CastingCallsController, type: :controller do
   def update_params
     { description: "This is updated description" }
   end
+
+  def no_casting_calls_message
+    t 'casting_calls.index.empty'
+  end
+
+  def create_casting_call
+    t 'casting_calls.splash.actions.create_casting_call'
+  end
+
+  def schedule_demo
+    t 'casting_calls.splash.actions.book_demo'
+  end
 end