remove unnecessary issues event filter on comments tab

app/helpers/events_helper.rb

@@ -45,6 +45,12 @@ module EventsHelper
     @project.feature_available?(feature_key, current_user)
   end
 
+  def comments_visible?
+    event_filter_visible(:repository) ||
+      event_filter_visible(:merge_requests) ||
+      event_filter_visible(:issues)
+  end
+
   def event_preposition(event)
     if event.push? || event.commented? || event.target
       "at"

app/views/shared/_event_filter.html.haml

@@ -6,6 +6,6 @@
     = event_filter_link EventFilter.merged, 'Merge events'
   - if event_filter_visible(:issues)
     = event_filter_link EventFilter.issue, 'Issue events'
-  - if event_filter_visible(:issues)
+  - if comments_visible?
     = event_filter_link EventFilter.comments, 'Comments'
   = event_filter_link EventFilter.team, 'Team'

changelogs/unreleased/25272_fix_comments_tab_disappearing.yml

+---
+title: 'Fix comments activity tab visibility condition'
+merge_request: 7913
+author: Rydkin Maxim

spec/features/projects/features_visibility_spec.rb

@@ -182,6 +182,44 @@ describe 'Edit Project Settings', feature: true do
         expect(page).not_to have_content("Comments")
       end
     end
+
+    # Regression spec for https://gitlab.com/gitlab-org/gitlab-ce/issues/25272
+    it "hides comments activity tab only on disabled issues, merge requests and repository" do
+      select "Disabled", from: "project_project_feature_attributes_issues_access_level"
+
+      save_changes_and_check_activity_tab do
+        expect(page).to have_content("Comments")
+      end
+
+      visit edit_namespace_project_path(project.namespace, project)
+
+      select "Disabled", from: "project_project_feature_attributes_merge_requests_access_level"
+
+      save_changes_and_check_activity_tab do
+        expect(page).to have_content("Comments")
+      end
+
+      visit edit_namespace_project_path(project.namespace, project)
+
+      select "Disabled", from: "project_project_feature_attributes_repository_access_level"
+
+      save_changes_and_check_activity_tab do
+        expect(page).not_to have_content("Comments")
+      end
+
+      visit edit_namespace_project_path(project.namespace, project)
+    end
+
+    def save_changes_and_check_activity_tab
+      click_button "Save changes"
+      wait_for_ajax
+
+      visit activity_namespace_project_path(project.namespace, project)
+
+      page.within(".event-filter") do
+        yield
+      end
+    end
   end
 
   # Regression spec for https://gitlab.com/gitlab-org/gitlab-ce/issues/24056