Add end-to-end test for "Prevent forking outside of the group"

app/assets/javascripts/pages/projects/forks/new/components/fork_groups_list.vue

@@ -85,6 +85,7 @@ export default {
         v-model="filter"
         :placeholder="$options.i18n.searchPlaceholder"
         class="gl-align-self-center gl-ml-auto fork-filtered-search"
+        data-qa-selector="fork_groups_list_search_field"
       />
     </template>
   </gl-tabs>

ee/app/views/groups/settings/_prevent_forking.html.haml

@@ -2,7 +2,7 @@
 
 .form-group.gl-mb-3
   .form-check
-    = f.check_box :prevent_forking_outside_group, checked: group.prevent_forking_outside_group?, class: 'form-check-input', disabled: !can_change_prevent_forking?(current_user, group)
+    = f.check_box :prevent_forking_outside_group, checked: group.prevent_forking_outside_group?, class: 'form-check-input', disabled: !can_change_prevent_forking?(current_user, group), data: { qa_selector: 'prevent_forking_outside_group_checkbox' }
     = f.label :prevent_forking_outside_group, class: 'form-check-label' do
       %span.gl-display-block= s_('GroupSettings|Prevent forking outside of the group')
       %span.text-muted= s_('GroupSettings|This setting will prevent group members from forking projects outside of the group.')

qa/qa/ee/page/group/settings/general.rb

@@ -29,6 +29,10 @@ module QA
                   element :membership_lock_checkbox
                 end
 
+                view 'ee/app/views/groups/settings/_prevent_forking.html.haml' do
+                  element :prevent_forking_outside_group_checkbox
+                end
+
                 view 'ee/app/views/shared/_repository_size_limit_setting.html.haml' do
                   element :repository_size_limit_field
                 end
@@ -88,6 +92,18 @@ module QA
               click_element :save_permissions_changes_button
             end
 
+            def set_prevent_forking_outside_group_enabled
+              expand_content :permission_lfs_2fa_content
+              check_element :prevent_forking_outside_group_checkbox
+              click_element :save_permissions_changes_button
+            end
+
+            def set_prevent_forking_outside_group_disabled
+              expand_content :permission_lfs_2fa_content
+              uncheck_element :prevent_forking_outside_group_checkbox
+              click_element :save_permissions_changes_button
+            end
+
             def set_repository_size_limit(limit)
               find_element(:repository_size_limit_field).set limit
             end

qa/qa/page/project/fork/new.rb

@@ -9,9 +9,17 @@ module QA
             element :fork_namespace_button
           end
 
+          view 'app/assets/javascripts/pages/projects/forks/new/components/fork_groups_list.vue' do
+            element :fork_groups_list_search_field
+          end
+
           def choose_namespace(namespace = Runtime::Namespace.path)
             click_element(:fork_namespace_button, name: namespace)
           end
+
+          def search_for_group(group_name)
+            find_element(:fork_groups_list_search_field).set(group_name)
+          end
         end
       end
     end

qa/qa/resource/sandbox.rb

@@ -76,6 +76,19 @@ module QA
           visibility: 'public'
         }
       end
+
+      def api_put_path
+        "/groups/#{id}"
+      end
+
+      def update_group_setting(group_setting:, value:)
+        put_body = { "#{group_setting}": value }
+        response = put Runtime::API::Request.new(api_client, api_put_path).url, put_body
+
+        unless response.code == HTTP_STATUS_OK
+          raise ResourceUpdateFailedError, "Could not update #{group_setting} to #{value}. Request returned (#{response.code}): `#{response}`."
+        end
+      end
     end
   end
 end

qa/qa/specs/features/ee/browser_ui/1_manage/group/prevent_forking_outside_group_spec.rb

+# frozen_string_literal: true
+
+module QA
+  RSpec.describe 'Manage' do
+    describe 'prevent forking outside group' do
+      let!(:group_for_fork) do
+        Resource::Sandbox.fabricate_via_api! do |sandbox_group|
+          sandbox_group.path = "group_for_fork_#{SecureRandom.hex(8)}"
+        end
+      end
+
+      let(:project) do
+        Resource::Project.fabricate! do |project|
+          project.name = "project_to_fork"
+          project.initialize_with_readme = true
+        end
+      end
+
+      context 'when disabled' do
+        before do
+          set_prevent_forking_outside_group('disabled')
+        end
+
+        it 'allows forking outside of group', testcase: 'https://gitlab.com/gitlab-org/quality/testcases/-/issues/1070' do
+          visit_project_and_search_group_for_fork
+
+          expect(page).to have_text(group_for_fork.path)
+          expect(page).to have_text('Select a namespace to fork the project')
+        end
+      end
+
+      context 'when enabled' do
+        before do
+          set_prevent_forking_outside_group('enabled')
+        end
+
+        it 'does not allow forking outside of group', testcase: 'https://gitlab.com/gitlab-org/quality/testcases/-/issues/1107' do
+          visit_project_and_search_group_for_fork
+
+          expect(page).not_to have_text(group_for_fork.path)
+          expect(page).not_to have_text('Select a namespace to fork the project')
+        end
+      end
+
+      after do
+        project.group.sandbox.update_group_setting(group_setting: 'prevent_forking_outside_group', value: false)
+        project.remove_via_api!
+        group_for_fork.remove_via_api!
+      end
+
+      def set_prevent_forking_outside_group(enabled_or_disabled)
+        Flow::Login.sign_in
+        project.group.sandbox.visit!
+        Page::Group::Menu.perform(&:click_group_general_settings_item)
+        Page::Group::Settings::General.perform do |general_setting|
+          general_setting.send("set_prevent_forking_outside_group_#{enabled_or_disabled}")
+        end
+      end
+
+      def visit_project_and_search_group_for_fork
+        project.visit!
+        Page::Project::Show.perform(&:fork_project)
+
+        Page::Project::Fork::New.perform do |fork_new|
+          fork_new.search_for_group(group_for_fork.path)
+        end
+      end
+    end
+  end
+end