Show nested groups tab on group page

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/controllers/groups_controller.rb

@@ -42,6 +42,8 @@ class GroupsController < Groups::ApplicationController
       @notification_setting = current_user.notification_settings_for(group)
     end
 
+    @nested_groups = group.children
+
     setup_projects
 
     respond_to do |format|

app/views/groups/show.html.haml

@@ -32,6 +32,10 @@
         %li
           = link_to "#shared", 'data-toggle' => 'tab' do
             Shared Projects
+      - if @nested_groups.present?
+        %li
+          = link_to "#groups", 'data-toggle' => 'tab' do
+            Nested Groups
     .nav-controls
       = form_tag request.path, method: :get, class: 'project-filter-form', id: 'project-filter-form' do |f|
         = search_field_tag :filter_projects, nil, placeholder: 'Filter by name', class: 'projects-list-filter form-control', spellcheck: false
@@ -47,3 +51,9 @@
     - if @shared_projects.present?
       .tab-pane#shared
         = render "shared_projects", projects: @shared_projects
+
+    - if @nested_groups.present?
+      .tab-pane#groups
+        %ul.content-list
+          - @nested_groups.each do |group|
+            = render 'shared/groups/group', group: group

changelogs/unreleased/dz-nested-group-misc.yml

+---
+title: Show nested groups tab on group page
+merge_request: 8308
+author:

spec/features/groups_spec.rb

@@ -107,4 +107,17 @@ feature 'Group', feature: true do
       expect(page).to have_css('.group-home-desc a[rel]')
     end
   end
+
+  describe 'group page with nested groups', js: true do
+    let!(:group) { create(:group) }
+    let!(:nested_group) { create(:group, parent: group) }
+    let!(:path)  { group_path(group) }
+
+    it 'has nested groups tab with nested groups inside' do
+      visit path
+      click_link 'Nested Groups'
+
+      expect(page).to have_content(nested_group.full_name)
+    end
+  end
 end