Add membership CSV export to root group [RUN-AS-IF-FOSS] [RUN ALL RSPEC]

app/assets/javascripts/members/components/members_tabs.vue

 <script>
-import { GlTabs, GlTab, GlBadge } from '@gitlab/ui';
+import { GlTabs, GlTab, GlBadge, GlButton } from '@gitlab/ui';
 import { mapState } from 'vuex';
 import { queryToObject } from '~/lib/utils/url_utility';
 import { __ } from '~/locale';
@@ -35,8 +35,8 @@ export default {
       queryParamValue: TAB_QUERY_PARAM_VALUES.accessRequest,
     },
   ],
-  components: { MembersApp, GlTabs, GlTab, GlBadge },
-  inject: ['canManageMembers'],
+  components: { MembersApp, GlTabs, GlTab, GlBadge, GlButton },
+  inject: ['canManageMembers', 'canExportMembers', 'exportCsvPath'],
   data() {
     return {
       selectedTabIndex: 0,
@@ -121,5 +121,15 @@ export default {
         <members-app :namespace="tab.namespace" :tab-query-param-value="tab.queryParamValue" />
       </gl-tab>
     </template>
+    <template #tabs-end>
+      <gl-button
+        v-if="canExportMembers"
+        class="gl-align-self-center gl-ml-auto"
+        icon="export"
+        :href="exportCsvPath"
+      >
+        {{ __('Export as CSV') }}
+      </gl-button>
+    </template>
   </gl-tabs>
 </template>

app/assets/javascripts/members/index.js

@@ -14,7 +14,13 @@ export const initMembersApp = (el, options) => {
   Vue.use(Vuex);
   Vue.use(GlToast);
 
-  const { sourceId, canManageMembers, ...vuexStoreAttributes } = parseDataAttributes(el);
+  const {
+    sourceId,
+    canManageMembers,
+    canExportMembers,
+    exportCsvPath,
+    ...vuexStoreAttributes
+  } = parseDataAttributes(el);
 
   const modules = Object.keys(MEMBER_TYPES).reduce((accumulator, namespace) => {
     const namespacedOptions = options[namespace];
@@ -54,6 +60,8 @@ export const initMembersApp = (el, options) => {
       currentUserId: gon.current_user_id || null,
       sourceId,
       canManageMembers,
+      canExportMembers,
+      exportCsvPath,
     },
     render: (createElement) => createElement('members-tabs'),
   });

app/helpers/groups/group_members_helper.rb

@@ -13,7 +13,7 @@ module Groups::GroupMembersHelper
     render 'shared/members/invite_member', submit_url: group_group_members_path(group), access_levels: group.access_level_roles, default_access_level: default_access_level
   end
 
-  def group_members_app_data_json(group, members:, invited:, access_requests:)
+  def group_members_app_data(group, members:, invited:, access_requests:)
     {
       user: group_members_list_data(group, members, { param_name: :page, params: { invited_members_page: nil, search_invited: nil } }),
       group: group_group_links_list_data(group),
@@ -21,7 +21,7 @@ module Groups::GroupMembersHelper
       access_request: group_members_list_data(group, access_requests.nil? ? [] : access_requests),
       source_id: group.id,
       can_manage_members: can?(current_user, :admin_group_member, group)
-    }.to_json
+    }
   end
 
   private

app/views/groups/group_members/index.html.haml

@@ -35,9 +35,9 @@
 
     = render_if_exists 'groups/group_members/ldap_sync'
 
-    .js-group-members-list-app{ data: { members_data: group_members_app_data_json(@group,
+    .js-group-members-list-app{ data: { members_data: group_members_app_data(@group,
                                                                              members: @members,
                                                                              invited: @invited_members,
-                                                                                  access_requests: @requesters) } }
+                                                                             access_requests: @requesters).to_json } }
       .loading
         .gl-spinner.gl-spinner-md

config/sidekiq_queues.yml

@@ -168,6 +168,8 @@
   - 1
 - - group_wikis_git_garbage_collect
   - 1
+- - groups_export_memberships
+  - 1
 - - groups_schedule_bulk_repository_shard_moves
   - 1
 - - groups_update_repository_storage

doc/user/group/index.md

@@ -516,6 +516,20 @@ To prevent members from being added to a group:
 All users who previously had permissions can no longer add members to a group.
 API requests to add a new user to a project are not possible.
 
+## Export members as CSV **(PREMIUM)**
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/287940) in GitLab 14.2.
+
+FLAG:
+On self-managed GitLab, by default this feature is not available. To make it available per group, ask an administrator to [enable the :ff_group_membership_export flag](../../administration/feature_flags.md). On GitLab.com, this feature is not available.
+The feature is not ready for production use.
+
+You can export a list of members in a group as a CSV.
+
+1. Go to your project and select **Project information > Members**.
+1. Select **Export as CSV**.
+1. Once the CSV file has been generated, it is emailed as an attachment to the user that requested it.
+
 ## Restrict group access by IP address **(PREMIUM)**
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/1985) in [GitLab Ultimate](https://about.gitlab.com/pricing/) 12.0.

ee/app/controllers/ee/groups/group_members_controller.rb

@@ -43,6 +43,14 @@ module EE
       # rubocop: enable CodeReuse/ActiveRecord
       # rubocop:enable Gitlab/ModuleWithInstanceVariables
 
+      def export_csv
+        return render_404 unless current_user.can?(:export_group_memberships, group)
+
+        ::Groups::ExportMembershipsWorker.perform_async(group.id, current_user.id)
+
+        redirect_to group_group_members_path(group), notice: _('CSV is being generated and will be emailed to you upon completion.')
+      end
+
       protected
 
       def authorize_update_group_member!

ee/app/helpers/ee/groups/group_members_helper.rb

@@ -14,4 +14,12 @@ module EE::Groups::GroupMembersHelper
       ldap_override_path: override_group_group_member_path(group, ':id')
     })
   end
+
+  override :group_members_app_data
+  def group_members_app_data(group, members:, invited:, access_requests:)
+    super.merge!({
+       can_export_members: can?(current_user, :export_group_memberships, group),
+       export_csv_path: export_csv_group_group_members_path(group)
+     })
+  end
 end

ee/app/mailers/ee/notify.rb

@@ -13,6 +13,7 @@ module EE
       include ::Emails::Requirements
       include ::Emails::UserCap
       include ::Emails::OncallRotation
+      include ::Emails::GroupMemberships
     end
 
     attr_reader :group

ee/app/mailers/emails/group_memberships.rb

+# frozen_string_literal: true
+
+module Emails
+  module GroupMemberships
+    def memberships_export_email(csv_data:, requested_by:, group:)
+      @group = group
+
+      filename = "#{group.full_path.parameterize}_group_memberships_#{Date.current.iso8601}.csv"
+      attachments[filename] = { content: csv_data, mime_type: 'text/csv' }
+      mail(to: requested_by.notification_email_for(group), subject: "Exported group membership list") do |format|
+        format.html { render layout: 'mailer' }
+        format.text { render layout: 'mailer' }
+      end
+    end
+  end
+end

ee/app/policies/ee/group_policy.rb

@@ -49,6 +49,10 @@ module EE
         @subject.feature_available?(:dora4_analytics)
       end
 
+      condition(:group_membership_export_available) do
+        @subject.feature_available?(:export_user_permissions) && ::Feature.enabled?(:ff_group_membership_export, @subject, default_enabled: :yaml)
+      end
+
       condition(:can_owners_manage_ldap, scope: :global) do
         ::Gitlab::CurrentSettings.allow_group_owners_to_manage_ldap?
       end
@@ -366,6 +370,7 @@ module EE
         prevent :create_subgroup
       end
 
+      rule { can?(:owner_access) & group_membership_export_available }.enable :export_group_memberships
       rule { can?(:owner_access) & compliance_framework_available }.enable :admin_compliance_framework
       rule { can?(:owner_access) & group_level_compliance_pipeline_available }.enable :admin_compliance_pipeline_configuration
     end

ee/app/services/groups/memberships/export_service.rb

+# frozen_string_literal: true
+
+module Groups
+  module Memberships
+    class ExportService < ::BaseContainerService
+      def execute
+        return ServiceResponse.error(message: 'Not available') unless current_user.can?(:export_group_memberships, container)
+
+        ServiceResponse.success(payload: csv_builder.render)
+      end
+
+      private
+
+      def csv_builder
+        @csv_builder ||= CsvBuilder.new(data, header_to_value_hash)
+      end
+
+      def data
+        GroupMembersFinder.new(container, current_user).execute(include_relations: [:descendants, :direct, :inherited])
+      end
+
+      def header_to_value_hash
+        {
+          'Username' => 'user_username',
+          'Name'     => 'user_name',
+          'Access granted' => -> (member) { member.created_at.to_s(:csv) },
+          'Access expires' => -> (member) { member.expires_at },
+          'Max role' => 'human_access',
+          'Source' => -> (member) { member.source == container ? 'Direct member' : 'Inherited member' }
+        }
+      end
+    end
+  end
+end

ee/app/views/notify/memberships_export_email.html.haml

+<p>Hi,<br />
+
+<p>Attached to this email is the list of members of <%= @group.name %> in CSV format.</p>

ee/app/views/notify/memberships_export_email.text.erb

+Hi,
+
+Attached to this email is the list of members of <%= @group.name %> in CSV format.

ee/app/workers/all_queues.yml

@@ -1042,6 +1042,15 @@
   :idempotent:
   :tags:
   - :exclude_from_kubernetes
+- :name: groups_export_memberships
+  :worker_name: Groups::ExportMembershipsWorker
+  :feature_category: :compliance_management
+  :has_external_dependencies:
+  :urgency: :low
+  :resource_boundary: :unknown
+  :weight: 1
+  :idempotent:
+  :tags: []
 - :name: groups_schedule_bulk_repository_shard_moves
   :worker_name: Groups::ScheduleBulkRepositoryShardMovesWorker
   :feature_category: :gitaly

ee/app/workers/groups/export_memberships_worker.rb

+# frozen_string_literal: true
+# rubocop:disable Scalability/IdempotentWorker
+# Worker triggers email so cannot be considered idempotent.
+
+module Groups
+  class ExportMembershipsWorker
+    include ApplicationWorker
+
+    sidekiq_options retry: true
+    feature_category :compliance_management
+    data_consistency :sticky
+
+    def perform(group_id, current_user_id)
+      @group = Group.find_by_id(group_id)
+      @current_user = User.find_by_id(current_user_id)
+      @response = Groups::Memberships::ExportService.new(container: @group, current_user: @current_user).execute
+
+      send_email if @response.success?
+    end
+
+    private
+
+    def send_email
+      Notify.memberships_export_email(csv_data: @response.payload,
+                                      requested_by: @current_user,
+                                      group: @group).deliver_later
+    end
+  end
+end

ee/config/feature_flags/development/ff_group_membership_export.yml

+---
+name: ff_group_membership_export
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/66755
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/336520
+milestone: '14.2'
+type: development
+group: group::compliance
+default_enabled: false

ee/config/routes/group.rb

@@ -9,6 +9,10 @@ constraints(::Constraints::GroupUrlConstrainer.new) do
 
     resources :group_members, only: [], concerns: :access_requestable do
       patch :override, on: :member
+
+      collection do
+        get :export_csv
+      end
     end
 
     resources :compliance_frameworks, only: [:new, :edit]

ee/spec/controllers/groups/group_members_controller_spec.rb

@@ -275,6 +275,89 @@ RSpec.describe Groups::GroupMembersController do
     end
   end
 
+  describe 'GET #export_csv' do
+    context 'when flag is disabled' do
+      before do
+        stub_licensed_features(export_user_permissions: true)
+        stub_feature_flags(ff_group_membership_export: false)
+      end
+
+      it 'responds with :not_found' do
+        get :export_csv, params: { group_id: group.id }
+
+        expect(response).to have_gitlab_http_status(:not_found)
+      end
+    end
+
+    context 'when feature is unlicensed' do
+      before do
+        stub_licensed_features(export_user_permissions: false)
+        stub_feature_flags(ff_group_membership_export: true)
+      end
+
+      it 'responds with :not_found' do
+        get :export_csv, params: { group_id: group.id }
+
+        expect(response).to have_gitlab_http_status(:not_found)
+      end
+    end
+
+    context 'when feature is licensed and enabled' do
+      before do
+        stub_licensed_features(export_user_permissions: true)
+        stub_feature_flags(ff_group_membership_export: true)
+      end
+
+      it 'enqueues a worker job' do
+        expect(::Groups::ExportMembershipsWorker).to receive(:perform_async).once
+
+        get :export_csv, params: { group_id: group }
+      end
+
+      context 'current user is a group maintainer' do
+        let_it_be(:maintainer) { create(:user) }
+
+        before do
+          group.add_user(maintainer, Gitlab::Access::MAINTAINER)
+        end
+
+        it 'returns a 404' do
+          get :export_csv, params: { group_id: group.id }
+
+          expect(response).to have_gitlab_http_status(:not_found)
+        end
+      end
+
+      context 'current user is a group developer' do
+        let_it_be(:maintainer) { create(:user) }
+
+        before do
+          group.add_user(maintainer, Gitlab::Access::DEVELOPER)
+        end
+
+        it 'returns a 404' do
+          get :export_csv, params: { group_id: group.id }
+
+          expect(response).to have_gitlab_http_status(:not_found)
+        end
+      end
+
+      context 'current user is a group guest' do
+        let_it_be(:maintainer) { create(:user) }
+
+        before do
+          group.add_user(maintainer, Gitlab::Access::GUEST)
+        end
+
+        it 'returns a 404' do
+          get :export_csv, params: { group_id: group.id }
+
+          expect(response).to have_gitlab_http_status(:not_found)
+        end
+      end
+    end
+  end
+
   describe 'POST #resend_invite' do
     context 'when user has minimal access' do
       let_it_be(:membership) { create(:group_member, :minimal_access, source: group, user: create(:user)) }

ee/spec/helpers/ee/groups/group_members_helper_spec.rb

@@ -22,26 +22,33 @@ RSpec.describe Groups::GroupMembersHelper do
     end
   end
 
-  describe '#group_members_app_data_json' do
+  describe '#group_members_app_data' do
     subject do
-      Gitlab::Json.parse(
-        helper.group_members_app_data_json(
+      helper.group_members_app_data(
         group,
         members: [],
         invited: [],
         access_requests: []
       )
-      )
     end
 
     before do
       allow(helper).to receive(:override_group_group_member_path).with(group, ':id').and_return('/groups/foo-bar/-/group_members/:id/override')
       allow(helper).to receive(:group_group_member_path).with(group, ':id').and_return('/groups/foo-bar/-/group_members/:id')
       allow(helper).to receive(:can?).with(current_user, :admin_group_member, group).and_return(true)
+      allow(helper).to receive(:can?).with(current_user, :export_group_memberships, group).and_return(true)
+    end
+
+    it 'adds `ldap_override_path`' do
+      expect(subject[:user][:ldap_override_path]).to eq('/groups/foo-bar/-/group_members/:id/override')
+    end
+
+    it 'adds `can_export_members`' do
+      expect(subject[:can_export_members]).to be true
     end
 
-    it 'adds `ldap_override_path` to returned json' do
-      expect(subject['user']['ldap_override_path']).to eq('/groups/foo-bar/-/group_members/:id/override')
+    it 'adds `export_csv_path`' do
+      expect(subject[:export_csv_path]).not_to be_nil
     end
   end
 end

ee/spec/mailers/emails/group_memberships_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Emails::GroupMemberships do
+  include EmailSpec::Matchers
+
+  let_it_be(:group) { create(:group) }
+  let_it_be(:owner) { create(:group_member, :owner, group: group) }
+
+  let(:csv) { CSV.parse_line("a,b,c\nd,e,f") }
+
+  describe "#user_cap_reached" do
+    subject { Notify.memberships_export_email(csv_data: csv, requested_by: owner.user, group: group) }
+
+    it { is_expected.to have_subject('Exported group membership list') }
+    it { is_expected.to be_delivered_to([owner.user.notification_email_for(group)]) }
+
+    it 'contains one attachment' do
+      freeze_time do
+        expect(subject.attachments.size).to eq(1)
+        expect(subject.attachments[0].content_type).to eq('text/csv')
+        expect(subject.attachments[0].filename).to eq("#{group.full_path.parameterize}_group_memberships_#{Date.current.iso8601}.csv")
+      end
+    end
+  end
+end

ee/spec/policies/group_policy_spec.rb

@@ -215,6 +215,35 @@ RSpec.describe GroupPolicy do
     it { is_expected.not_to be_allowed(:read_dora4_analytics) }
   end
 
+  context 'export group memberships' do
+    let(:current_user) { owner }
+
+    context 'when exporting user permissions is not available' do
+      before do
+        stub_licensed_features(export_user_permissions: false)
+      end
+
+      it { is_expected.not_to be_allowed(:export_group_memberships) }
+    end
+
+    context 'when exporting user permissions is available' do
+      before do
+        stub_licensed_features(export_user_permissions: true)
+        stub_feature_flags(ff_group_membership_export: true)
+      end
+
+      it { is_expected.to be_allowed(:export_group_memberships) }
+    end
+
+    context 'when feature flag is disabled' do
+      before do
+        stub_feature_flags(ff_group_membership_export: false)
+      end
+
+      it { is_expected.not_to be_allowed(:export_group_memberships) }
+    end
+  end
+
   context 'when group activity analytics is available' do
     let(:current_user) { developer }
 

ee/spec/services/groups/memberships/export_service_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Groups::Memberships::ExportService do
+  let(:group) { create(:group) }
+  let(:owner_member) { create(:group_member, :owner, group: group)}
+  let(:current_user) { owner_member.user }
+  let(:service) { described_class.new(container: group, current_user: current_user) }
+
+  shared_examples 'not available' do
+    it 'returns a failed response' do
+      response = service.execute
+
+      expect(response.success?).to be false
+      expect(response.message).to eq('Not available')
+    end
+  end
+
+  describe '#execute' do
+    context 'when unlicensed' do
+      before do
+        stub_licensed_features(export_user_permissions: false)
+        stub_feature_flags(ff_group_membership_export: true)
+      end
+
+      it_behaves_like 'not available'
+    end
+
+    context 'when disabled' do
+      before do
+        stub_licensed_features(export_user_permissions: true)
+        stub_feature_flags(ff_group_membership_export: false)
+      end
+
+      it_behaves_like 'not available'
+    end
+
+    context 'when licensed and enabled' do
+      before do
+        stub_licensed_features(export_user_permissions: true)
+        stub_feature_flags(ff_group_membership_export: true)
+        group.add_user(current_user, Gitlab::Access::OWNER)
+      end
+
+      it 'is successful' do
+        response = service.execute
+
+        expect(response.success?).to be true
+      end
+
+      context 'current_user is not an owner of this group' do
+        let(:service) { described_class.new(container: group, current_user: create(:user)) }
+
+        it_behaves_like 'not available'
+      end
+
+      context 'current_user is a group developer' do
+        let(:current_user) { create(:user) }
+
+        before do
+          group.add_developer(current_user)
+        end
+
+        it_behaves_like 'not available'
+      end
+
+      context 'current_user is a group maintainer' do
+        let(:current_user) { create(:user) }
+
+        before do
+          group.add_maintainer(current_user)
+        end
+
+        it_behaves_like 'not available'
+      end
+
+      context 'current_user is a guest' do
+        let(:current_user) { create(:user) }
+
+        before do
+          group.add_guest(current_user)
+        end
+
+        it_behaves_like 'not available'
+      end
+
+      context 'data verification' do
+        before do
+          create_list(:group_member, 4, group: group)
+          create(:group_member, group: group, created_at: '2021-02-01', expires_at: '2022-01-01', user: create(:user, username: 'mwoolf', name: 'Max Woolf'))
+        end
+        let(:csv) { CSV.parse(service.execute.payload, headers: true) }
+
+        it 'has the correct headers' do
+          expect(csv.headers).to contain_exactly('Username', 'Name', 'Access granted', 'Access expires', 'Max role', 'Source')
+        end
+
+        it 'has the correct number of rows' do
+          expect(csv.size).to eq(6)
+        end
+
+        context 'a direct user', :aggregate_failures do
+          let(:direct_user_row) { csv[5] }
+
+          it 'has the correct information' do
+            expect(direct_user_row[0]).to eq('mwoolf')
+            expect(direct_user_row[1]).to eq('Max Woolf')
+            expect(direct_user_row[2]).to eq('2021-02-01 00:00:00')
+            expect(direct_user_row[3]).to eq('2022-01-01')
+            expect(direct_user_row[4]).to eq('Owner')
+            expect(direct_user_row[5]).to eq('Direct member')
+          end
+        end
+
+        context 'a user in a subgroup' do
+          before do
+            sub_group = create(:group, parent: group)
+            create(:group_member, group: sub_group, user: create(:user, username: 'Oliver', name: 'Oliver D', email: 'oliver@test.com'))
+          end
+
+          it 'has the correct information' do
+            row = csv.find { |row| row['Username'] == 'Oliver' }
+
+            expect(row[0]).to eq('Oliver')
+            expect(row[1]).to eq('Oliver D')
+            expect(row[4]).to eq('Owner')
+            expect(row[5]).to eq('Inherited member')
+          end
+        end
+      end
+    end
+  end
+end

ee/spec/workers/groups/export_memberships_worker_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Groups::ExportMembershipsWorker do
+  let_it_be(:group) { create(:group) }
+  let_it_be(:user) { create(:user) }
+
+  before do
+    stub_licensed_features(export_user_permissions: true)
+    stub_feature_flags(ff_group_membership_export: true)
+    group.add_owner(user)
+  end
+
+  subject(:worker) { described_class.new }
+
+  it 'enqueues an email' do
+    expect(Notify).to receive(:memberships_export_email).once.and_call_original
+
+    worker.perform(group.id, user.id)
+  end
+end

lib/gitlab/import_export/project/import_export.yml

@@ -329,6 +329,7 @@ excluded_attributes:
     - :release_id
   project_members:
     - :source_id
+    - :invite_email_success
   metrics:
     - :merge_request_id
     - :pipeline_id

locale/gitlab.pot

@@ -6010,6 +6010,9 @@ msgstr ""
 msgid "CPU"
 msgstr ""
 
+msgid "CSV is being generated and will be emailed to you upon completion."
+msgstr ""
+
 msgid "CVE|As a maintainer, requesting a CVE for a vulnerability in your project will help your users stay secure and informed."
 msgstr ""
 

spec/frontend/members/components/members_tabs_spec.js

-import { GlTabs } from '@gitlab/ui';
+import { GlTabs, GlButton } from '@gitlab/ui';
 import Vue, { nextTick } from 'vue';
 import Vuex from 'vuex';
 import setWindowLocation from 'helpers/set_window_location_helper';
@@ -17,7 +17,7 @@ describe('MembersTabs', () => {
 
   let wrapper;
 
-  const createComponent = ({ totalItems = 10, options = {} } = {}) => {
+  const createComponent = ({ totalItems = 10, provide = {} } = {}) => {
     const store = new Vuex.Store({
       modules: {
         [MEMBER_TYPES.user]: {
@@ -79,8 +79,10 @@ describe('MembersTabs', () => {
       stubs: ['members-app'],
       provide: {
         canManageMembers: true,
+        canExportMembers: true,
+        exportCsvPath: '',
+        ...provide,
       },
-      ...options,
     });
 
     return nextTick();
@@ -89,6 +91,7 @@ describe('MembersTabs', () => {
   const findTabs = () => wrapper.findAllByRole('tab').wrappers;
   const findTabByText = (text) => findTabs().find((tab) => tab.text().includes(text));
   const findActiveTab = () => wrapper.findByRole('tab', { selected: true });
+  const findExportButton = () => wrapper.findComponent(GlButton);
 
   beforeEach(() => {
     setWindowLocation('https://localhost');
@@ -164,7 +167,7 @@ describe('MembersTabs', () => {
 
   describe('when `canManageMembers` is `false`', () => {
     it('shows all tabs except `Invited` and `Access requests`', async () => {
-      await createComponent({ options: { provide: { canManageMembers: false } } });
+      await createComponent({ provide: { canManageMembers: false } });
 
       expect(findTabByText('Members')).not.toBeUndefined();
       expect(findTabByText('Groups')).not.toBeUndefined();
@@ -172,4 +175,20 @@ describe('MembersTabs', () => {
       expect(findTabByText('Access requests')).toBeUndefined();
     });
   });
+
+  describe('when `canExportMembers` is true', () => {
+    it('shows the CSV export button with export path', async () => {
+      await createComponent({ provide: { canExportMembers: true, exportCsvPath: 'foo' } });
+
+      expect(findExportButton().attributes('href')).toBe('foo');
+    });
+  });
+
+  describe('when `canExportMembers` is false', () => {
+    it('does not show the CSV export button', async () => {
+      await createComponent({ provide: { canExportMembers: false } });
+
+      expect(findExportButton().exists()).toBe(false);
+    });
+  });
 });

spec/helpers/groups/group_members_helper_spec.rb

@@ -9,6 +9,7 @@ RSpec.describe Groups::GroupMembersHelper do
   let_it_be(:group) { create(:group) }
 
   before do
+    allow(helper).to receive(:can?).with(current_user, :export_group_memberships, group).and_return(false)
     allow(helper).to receive(:can?).with(current_user, :owner_access, group).and_return(true)
     allow(helper).to receive(:current_user).and_return(current_user)
   end
@@ -23,7 +24,7 @@ RSpec.describe Groups::GroupMembersHelper do
     end
   end
 
-  describe '#group_members_app_data_json' do
+  describe '#group_members_app_data' do
     include_context 'group_group_link'
 
     let(:members) { create_list(:group_member, 2, group: shared_group, created_by: current_user) }
@@ -33,27 +34,26 @@ RSpec.describe Groups::GroupMembersHelper do
     let(:members_collection) { members }
 
     subject do
-      Gitlab::Json.parse(
-        helper.group_members_app_data_json(
+      helper.group_members_app_data(
         shared_group,
         members: present_members(members_collection),
         invited: present_members(invited),
         access_requests: present_members(access_requests)
       )
-      )
     end
 
     shared_examples 'members.json' do |member_type|
       it 'returns `members` property that matches json schema' do
-        expect(subject[member_type]['members'].to_json).to match_schema('members')
+        expect(subject[member_type.to_sym][:members].to_json).to match_schema('members')
       end
 
       it 'sets `member_path` property' do
-        expect(subject[member_type]['member_path']).to eq('/groups/foo-bar/-/group_members/:id')
+        expect(subject[member_type.to_sym][:member_path]).to eq('/groups/foo-bar/-/group_members/:id')
       end
     end
 
     before do
+      allow(helper).to receive(:can?).with(current_user, :export_group_memberships, shared_group).and_return(true)
       allow(helper).to receive(:group_group_member_path).with(shared_group, ':id').and_return('/groups/foo-bar/-/group_members/:id')
       allow(helper).to receive(:group_group_link_path).with(shared_group, ':id').and_return('/groups/foo-bar/-/group_links/:id')
       allow(helper).to receive(:can?).with(current_user, :admin_group_member, shared_group).and_return(true)
@@ -63,7 +63,7 @@ RSpec.describe Groups::GroupMembersHelper do
       expected = {
         source_id: shared_group.id,
         can_manage_members: true
-      }.as_json
+      }
 
       expect(subject).to include(expected)
     end
@@ -90,11 +90,11 @@ RSpec.describe Groups::GroupMembersHelper do
 
     context 'group links' do
       it 'sets `group.members` property that matches json schema' do
-        expect(subject['group']['members'].to_json).to match_schema('group_link/group_group_links')
+        expect(subject[:group][:members].to_json).to match_schema('group_link/group_group_links')
       end
 
       it 'sets `member_path` property' do
-        expect(subject['group']['member_path']).to eq('/groups/foo-bar/-/group_links/:id')
+        expect(subject[:group][:member_path]).to eq('/groups/foo-bar/-/group_links/:id')
       end
     end
 
@@ -108,7 +108,7 @@ RSpec.describe Groups::GroupMembersHelper do
           params: {}
         }.as_json
 
-        expect(subject['access_request']['pagination']).to include(expected)
+        expect(subject[:access_request][:pagination].as_json).to include(expected)
       end
     end
 
@@ -124,7 +124,7 @@ RSpec.describe Groups::GroupMembersHelper do
           params: { invited_members_page: nil, search_invited: nil }
         }.as_json
 
-        expect(subject['user']['pagination']).to include(expected)
+        expect(subject[:user][:pagination].as_json).to include(expected)
       end
     end
   end