add delete button to the files in broadcast page

spec/features/user_managing_broadcasts_spec.rb

@@ -164,6 +164,21 @@ feature 'User managing broadcasts' do
       click_on add_file_button
     end
 
+    scenario 'manager user can click delete button next to the file and delete file', js: true do
+      broadcast = create(:broadcast, :with_stream, :with_files, project: project)
+
+      visit project_broadcast_path(project, broadcast)
+
+      expect(page).to have_content delete_file_button, count: 3
+
+      accept_alert do
+        first('a', text: delete_file_button).click
+      end
+
+      expect(page).to have_content delete_file_button, count: 2
+      expect(Broadcast.find(broadcast.id).files.count).to eq 2
+    end
+
     scenario 'visit multi-view broadcast page', js: true do
       broadcast_one = create(:broadcast, :with_stream, :with_files, name: 'Broadcast 1', project: project)
       broadcast_two = create(:broadcast, :with_stream, :with_files, name: 'Broadcast 2', project: project)
@@ -198,6 +213,14 @@ feature 'User managing broadcasts' do
         expect(page).to have_content schedule_demo
         expect(page).not_to have_content create_stream
       end
+
+      scenario 'associate user does not see delete button next to the file', js: true do
+        broadcast = create(:broadcast, :with_stream, :with_files, project: project)
+
+        visit project_broadcast_path(project, broadcast)
+
+        expect(page).to have_content delete_file_button, count: 0
+      end
     end
 
     context 'When the user is account manager' do
@@ -209,6 +232,21 @@ feature 'User managing broadcasts' do
         expect(page).to have_content schedule_demo
         expect(page).to have_content create_stream
       end
+
+      scenario 'account manager user can click delete button next to the file and delete file', js: true do
+        broadcast = create(:broadcast, :with_stream, :with_files, project: project)
+
+        visit project_broadcast_path(project, broadcast)
+
+        expect(page).to have_content delete_file_button, count: 3
+
+        accept_alert do
+          first('a', text: delete_file_button).click
+        end
+
+        expect(page).to have_content delete_file_button, count: 2
+        expect(Broadcast.find(broadcast.id).files.count).to eq 2
+      end
     end
 
   end
@@ -262,5 +300,9 @@ feature 'User managing broadcasts' do
     'Live stream is waiting to begin'
   end
 
+  def delete_file_button
+    t 'broadcasts.file.actions.delete_file'
+  end
+
 
 end