Add groups field to UserType in GraphQL

groups returns all groups the user is a member of.
groups can be filtered by permission CREATE_PROJECTS
to get a list of groups where the user can create projects

app/finders/groups/user_groups_finder.rb

+# frozen_string_literal: true
+
+# Groups::UserGroupsFinder
+#
+# Used to filter Groups where a user is member
+#
+# Arguments:
+#   current_user - user requesting group info on target user
+#   target_user - user for which groups will be found
+#   params:
+#     permissions: string (see Types::Groups::UserPermissionsEnum)
+#     search: string used for search on path and group name
+#
+# Initially created to filter user groups and descendants where the user can create projects
+module Groups
+  class UserGroupsFinder
+    def initialize(current_user, target_user, params = {})
+      @current_user = current_user
+      @target_user = target_user
+      @params = params
+    end
+
+    def execute
+      return Group.none unless current_user&.can?(:read_user_groups, target_user)
+      return Group.none if target_user.blank?
+
+      items = by_permission_scope
+      items = by_search(items)
+
+      sort(items)
+    end
+
+    private
+
+    attr_reader :current_user, :target_user, :params
+
+    def sort(items)
+      items.order(path: :asc, id: :asc) # rubocop: disable CodeReuse/ActiveRecord
+    end
+
+    def by_search(items)
+      return items if params[:search].blank?
+
+      items.search(params[:search])
+    end
+
+    def by_permission_scope
+      if permission_scope_create_projects?
+        target_user.manageable_groups(include_groups_with_developer_maintainer_access: true)
+      else
+        target_user.groups
+      end
+    end
+
+    def permission_scope_create_projects?
+      params[:permission_scope] == :create_projects &&
+        Feature.enabled?(:paginatable_namespace_drop_down_for_project_creation, current_user, default_enabled: :yaml)
+    end
+  end
+end

app/graphql/resolvers/base_resolver.rb

@@ -124,6 +124,16 @@ module Resolvers
       [args[:iid], args[:iids]].any? ? 0 : 0.01
     end
 
+    def self.before_connection_authorization(&block)
+      @before_connection_authorization_block = block
+    end
+
+    # rubocop: disable Style/TrivialAccessors
+    def self.before_connection_authorization_block
+      @before_connection_authorization_block
+    end
+    # rubocop: enable Style/TrivialAccessors
+
     def offset_pagination(relation)
       ::Gitlab::Graphql::Pagination::OffsetPaginatedRelation.new(relation)
     end

app/graphql/resolvers/users/groups_resolver.rb

+# frozen_string_literal: true
+
+module Resolvers
+  module Users
+    class GroupsResolver < BaseResolver
+      include Gitlab::Graphql::Authorize::AuthorizeResource
+      include LooksAhead
+
+      type Types::GroupType.connection_type, null: true
+
+      authorize :read_user_groups
+      authorizes_object!
+
+      argument :search, GraphQL::Types::String,
+               required: false,
+               description: 'Search by group name or path.'
+      argument :permission_scope,
+               ::Types::PermissionTypes::GroupEnum,
+               required: false,
+               description: 'Filter by permissions the user has on groups.'
+
+      before_connection_authorization do |nodes, current_user|
+        Preloaders::UserMaxAccessLevelInGroupsPreloader.new(nodes, current_user).execute
+      end
+
+      def resolve_with_lookahead(**args)
+        return unless Feature.enabled?(:paginatable_namespace_drop_down_for_project_creation, current_user, default_enabled: :yaml)
+
+        apply_lookahead(Groups::UserGroupsFinder.new(current_user, object, args).execute)
+      end
+
+      private
+
+      def preloads
+        {
+          path: [:route],
+          full_path: [:route]
+        }
+      end
+    end
+  end
+end
+
+Resolvers::Users::GroupsResolver.prepend_mod_with('Resolvers::Users::GroupsResolver')

app/graphql/types/permission_types/group.rb

@@ -5,7 +5,7 @@ module Types
     class Group < BasePermissionType
       graphql_name 'GroupPermissions'
 
-      abilities :read_group
+      abilities :read_group, :create_projects
     end
   end
 end

app/graphql/types/permission_types/group_enum.rb

+# frozen_string_literal: true
+
+module Types
+  module PermissionTypes
+    class GroupEnum < BaseEnum
+      graphql_name 'GroupPermission'
+      description 'User permission on groups'
+
+      value 'CREATE_PROJECTS', value: :create_projects, description: 'Groups where the user can create projects.'
+    end
+  end
+end

app/graphql/types/user_interface.rb

@@ -59,6 +59,9 @@ module Types
           type: Types::GroupMemberType.connection_type,
           null: true,
           description: 'Group memberships of the user.'
+    field :groups,
+          resolver: Resolvers::Users::GroupsResolver,
+          description: 'Groups where the user has access.'
     field :group_count,
           resolver: Resolvers::Users::GroupCountResolver,
           description: 'Group count for the user.'

app/models/preloaders/user_max_access_level_in_groups_preloader.rb

+# frozen_string_literal: true
+
+module Preloaders
+  # This class preloads the max access level (role) for the user within the given groups and
+  # stores the values in requests store.
+  # Will only be able to preload max access level for groups where the user is a direct member
+  class UserMaxAccessLevelInGroupsPreloader
+    include BulkMemberAccessLoad
+
+    def initialize(groups, user)
+      @groups = groups
+      @user = user
+    end
+
+    def execute
+      group_memberships = GroupMember.active_without_invites_and_requests
+                                     .non_minimal_access
+                                     .where(user: @user, source_id: @groups)
+                                     .group(:source_id)
+                                     .maximum(:access_level)
+
+      group_memberships.each do |group_id, max_access_level|
+        merge_value_to_request_store(User, @user.id, group_id, max_access_level)
+      end
+    end
+  end
+end

app/policies/user_policy.rb

@@ -25,6 +25,7 @@ class UserPolicy < BasePolicy
     enable :update_user_status
     enable :read_user_personal_access_tokens
     enable :read_group_count
+    enable :read_user_groups
   end
 
   rule { default }.enable :read_user_profile

config/feature_flags/development/paginatable_namespace_drop_down_for_project_creation.yml

+---
+name: paginatable_namespace_drop_down_for_project_creation
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/66112
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/338930
+milestone: '14.3'
+type: development
+group: group::project management
+default_enabled: false

doc/api/graphql/reference/index.md

@@ -10122,6 +10122,7 @@ Represents a Group Membership.
 
 | Name | Type | Description |
 | ---- | ---- | ----------- |
+| <a id="grouppermissionscreateprojects"></a>`createProjects` | [`Boolean!`](#boolean) | Indicates the user can perform `create_projects` on this resource. |
 | <a id="grouppermissionsreadgroup"></a>`readGroup` | [`Boolean!`](#boolean) | Indicates the user can perform `read_group` on this resource. |
 
 ### `GroupReleaseStats`
@@ -10856,6 +10857,23 @@ four standard [pagination arguments](#connection-pagination-arguments):
 | <a id="mergerequestassigneeauthoredmergerequestsstate"></a>`state` | [`MergeRequestState`](#mergerequeststate) | Merge request state. If provided, all resolved merge requests will have this state. |
 | <a id="mergerequestassigneeauthoredmergerequeststargetbranches"></a>`targetBranches` | [`[String!]`](#string) | Array of target branch names. All resolved merge requests will have one of these branches as their target. |
 
+##### `MergeRequestAssignee.groups`
+
+Groups where the user has access.
+
+Returns [`GroupConnection`](#groupconnection).
+
+This field returns a [connection](#connections). It accepts the
+four standard [pagination arguments](#connection-pagination-arguments):
+`before: String`, `after: String`, `first: Int`, `last: Int`.
+
+###### Arguments
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| <a id="mergerequestassigneegroupspermissionscope"></a>`permissionScope` | [`GroupPermission`](#grouppermission) | Filter by permissions the user has on groups. |
+| <a id="mergerequestassigneegroupssearch"></a>`search` | [`String`](#string) | Search by group name or path. |
+
 ##### `MergeRequestAssignee.reviewRequestedMergeRequests`
 
 Merge requests assigned to the user for review.
@@ -11085,6 +11103,23 @@ four standard [pagination arguments](#connection-pagination-arguments):
 | <a id="mergerequestreviewerauthoredmergerequestsstate"></a>`state` | [`MergeRequestState`](#mergerequeststate) | Merge request state. If provided, all resolved merge requests will have this state. |
 | <a id="mergerequestreviewerauthoredmergerequeststargetbranches"></a>`targetBranches` | [`[String!]`](#string) | Array of target branch names. All resolved merge requests will have one of these branches as their target. |
 
+##### `MergeRequestReviewer.groups`
+
+Groups where the user has access.
+
+Returns [`GroupConnection`](#groupconnection).
+
+This field returns a [connection](#connections). It accepts the
+four standard [pagination arguments](#connection-pagination-arguments):
+`before: String`, `after: String`, `first: Int`, `last: Int`.
+
+###### Arguments
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| <a id="mergerequestreviewergroupspermissionscope"></a>`permissionScope` | [`GroupPermission`](#grouppermission) | Filter by permissions the user has on groups. |
+| <a id="mergerequestreviewergroupssearch"></a>`search` | [`String`](#string) | Search by group name or path. |
+
 ##### `MergeRequestReviewer.reviewRequestedMergeRequests`
 
 Merge requests assigned to the user for review.
@@ -13955,6 +13990,23 @@ four standard [pagination arguments](#connection-pagination-arguments):
 | <a id="usercoreauthoredmergerequestsstate"></a>`state` | [`MergeRequestState`](#mergerequeststate) | Merge request state. If provided, all resolved merge requests will have this state. |
 | <a id="usercoreauthoredmergerequeststargetbranches"></a>`targetBranches` | [`[String!]`](#string) | Array of target branch names. All resolved merge requests will have one of these branches as their target. |
 
+##### `UserCore.groups`
+
+Groups where the user has access.
+
+Returns [`GroupConnection`](#groupconnection).
+
+This field returns a [connection](#connections). It accepts the
+four standard [pagination arguments](#connection-pagination-arguments):
+`before: String`, `after: String`, `first: Int`, `last: Int`.
+
+###### Arguments
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| <a id="usercoregroupspermissionscope"></a>`permissionScope` | [`GroupPermission`](#grouppermission) | Filter by permissions the user has on groups. |
+| <a id="usercoregroupssearch"></a>`search` | [`String`](#string) | Search by group name or path. |
+
 ##### `UserCore.reviewRequestedMergeRequests`
 
 Merge requests assigned to the user for review.
@@ -15097,6 +15149,14 @@ Group member relation.
 | <a id="groupmemberrelationdirect"></a>`DIRECT` | Members in the group itself. |
 | <a id="groupmemberrelationinherited"></a>`INHERITED` | Members in the group's ancestor groups. |
 
+### `GroupPermission`
+
+User permission on groups.
+
+| Value | Description |
+| ----- | ----------- |
+| <a id="grouppermissioncreate_projects"></a>`CREATE_PROJECTS` | Groups where the user can create projects. |
+
 ### `HealthStatus`
 
 Health status of an issue or epic.
@@ -16871,6 +16931,23 @@ four standard [pagination arguments](#connection-pagination-arguments):
 | <a id="userauthoredmergerequestsstate"></a>`state` | [`MergeRequestState`](#mergerequeststate) | Merge request state. If provided, all resolved merge requests will have this state. |
 | <a id="userauthoredmergerequeststargetbranches"></a>`targetBranches` | [`[String!]`](#string) | Array of target branch names. All resolved merge requests will have one of these branches as their target. |
 
+###### `User.groups`
+
+Groups where the user has access.
+
+Returns [`GroupConnection`](#groupconnection).
+
+This field returns a [connection](#connections). It accepts the
+four standard [pagination arguments](#connection-pagination-arguments):
+`before: String`, `after: String`, `first: Int`, `last: Int`.
+
+####### Arguments
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| <a id="usergroupspermissionscope"></a>`permissionScope` | [`GroupPermission`](#grouppermission) | Filter by permissions the user has on groups. |
+| <a id="usergroupssearch"></a>`search` | [`String`](#string) | Search by group name or path. |
+
 ###### `User.reviewRequestedMergeRequests`
 
 Merge requests assigned to the user for review.

ee/app/graphql/ee/resolvers/users/groups_resolver.rb

+# frozen_string_literal: true
+
+module EE
+  module Resolvers
+    module Users
+      module GroupsResolver
+        extend ActiveSupport::Concern
+        extend ::Gitlab::Utils::Override
+
+        private
+
+        override :unconditional_includes
+        def unconditional_includes
+          [:saml_provider, *super]
+        end
+      end
+    end
+  end
+end

lib/gitlab/graphql/authorize/connection_filter_extension.rb

@@ -7,12 +7,14 @@ module Gitlab
         class Redactor
           include ::Gitlab::Graphql::Laziness
 
-          def initialize(type, context)
+          def initialize(type, context, resolver)
             @type = type
             @context = context
+            @resolver = resolver
           end
 
           def redact(nodes)
+            perform_before_authorize_action(nodes)
             remove_unauthorized(nodes)
 
             nodes
@@ -29,6 +31,13 @@ module Gitlab
 
           private
 
+          def perform_before_authorize_action(nodes)
+            before_connection_authorization_block = @resolver&.before_connection_authorization_block
+            return unless before_connection_authorization_block.respond_to?(:call)
+
+            before_connection_authorization_block.call(nodes, @context[:current_user])
+          end
+
           def remove_unauthorized(nodes)
             nodes
               .map! { |lazy| force(lazy) }
@@ -49,14 +58,14 @@ module Gitlab
         end
 
         def redact_connection(conn, context)
-          redactor = Redactor.new(@field.type.unwrap.node_type, context)
+          redactor = Redactor.new(@field.type.unwrap.node_type, context, @field.resolver)
           return unless redactor.active?
 
           conn.redactor = redactor if conn.respond_to?(:redactor=)
         end
 
         def redact_list(list, context)
-          redactor = Redactor.new(@field.type.unwrap, context)
+          redactor = Redactor.new(@field.type.unwrap, context, @field.resolver)
           redactor.redact(list) if redactor.active?
         end
       end

spec/finders/groups/user_groups_finder_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Groups::UserGroupsFinder do
+  describe '#execute' do
+    let_it_be(:user) { create(:user) }
+    let_it_be(:guest_group) { create(:group, name: 'public guest', path: 'public-guest') }
+    let_it_be(:private_maintainer_group) { create(:group, :private, name: 'b private maintainer', path: 'b-private-maintainer') }
+    let_it_be(:public_developer_group) { create(:group, project_creation_level: nil, name: 'c public developer', path: 'c-public-developer') }
+    let_it_be(:public_maintainer_group) { create(:group, name: 'a public maintainer', path: 'a-public-maintainer') }
+
+    subject { described_class.new(current_user, target_user, arguments).execute }
+
+    let(:arguments) { {} }
+    let(:current_user) { user }
+    let(:target_user) { user }
+
+    before_all do
+      guest_group.add_guest(user)
+      private_maintainer_group.add_maintainer(user)
+      public_developer_group.add_developer(user)
+      public_maintainer_group.add_maintainer(user)
+    end
+
+    it 'returns all groups where the user is a direct member' do
+      is_expected.to match(
+        [
+          public_maintainer_group,
+          private_maintainer_group,
+          public_developer_group,
+          guest_group
+        ]
+      )
+    end
+
+    context 'when target_user is nil' do
+      let(:target_user) { nil }
+
+      it { is_expected.to be_empty }
+    end
+
+    context 'when current_user is nil' do
+      let(:current_user) { nil }
+
+      it { is_expected.to be_empty }
+    end
+
+    context 'when permission is :create_projects' do
+      let(:arguments) { { permission_scope: :create_projects } }
+
+      specify do
+        is_expected.to match(
+          [
+            public_maintainer_group,
+            private_maintainer_group,
+            public_developer_group
+          ]
+        )
+      end
+
+      context 'when paginatable_namespace_drop_down_for_project_creation feature flag is disabled' do
+        before do
+          stub_feature_flags(paginatable_namespace_drop_down_for_project_creation: false)
+        end
+
+        it 'ignores project creation scope and returns all groups where the user is a direct member' do
+          is_expected.to match(
+            [
+              public_maintainer_group,
+              private_maintainer_group,
+              public_developer_group,
+              guest_group
+            ]
+          )
+        end
+      end
+
+      context 'when search is provided' do
+        let(:arguments) { { permission_scope: :create_projects, search: 'maintainer' } }
+
+        specify do
+          is_expected.to match(
+            [
+              public_maintainer_group,
+              private_maintainer_group
+            ]
+          )
+        end
+      end
+    end
+
+    context 'when search is provided' do
+      let(:arguments) { { search: 'maintainer' } }
+
+      specify do
+        is_expected.to match(
+          [
+            public_maintainer_group,
+            private_maintainer_group
+          ]
+        )
+      end
+    end
+  end
+end

spec/graphql/resolvers/users/groups_resolver_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Resolvers::Users::GroupsResolver do
+  include GraphqlHelpers
+  include AdminModeHelper
+
+  describe '#resolve' do
+    let_it_be(:user) { create(:user) }
+    let_it_be(:guest_group) { create(:group, name: 'public guest', path: 'public-guest') }
+    let_it_be(:private_maintainer_group) { create(:group, :private, name: 'b private maintainer', path: 'b-private-maintainer') }
+    let_it_be(:public_developer_group) { create(:group, project_creation_level: nil, name: 'c public developer', path: 'c-public-developer') }
+    let_it_be(:public_maintainer_group) { create(:group, name: 'a public maintainer', path: 'a-public-maintainer') }
+
+    subject(:resolved_items) { resolve_groups(args: group_arguments, current_user: current_user, obj: resolver_object) }
+
+    let(:group_arguments) { {} }
+    let(:current_user) { user }
+    let(:resolver_object) { user }
+
+    before_all do
+      guest_group.add_guest(user)
+      private_maintainer_group.add_maintainer(user)
+      public_developer_group.add_developer(user)
+      public_maintainer_group.add_maintainer(user)
+    end
+
+    context 'when paginatable_namespace_drop_down_for_project_creation feature flag is disabled' do
+      before do
+        stub_feature_flags(paginatable_namespace_drop_down_for_project_creation: false)
+      end
+
+      it { is_expected.to be_nil }
+    end
+
+    context 'when resolver object is current user' do
+      context 'when permission is :create_projects' do
+        let(:group_arguments) { { permission_scope: :create_projects } }
+
+        specify do
+          is_expected.to match(
+            [
+              public_maintainer_group,
+              private_maintainer_group,
+              public_developer_group
+            ]
+          )
+        end
+      end
+
+      specify do
+        is_expected.to match(
+          [
+            public_maintainer_group,
+            private_maintainer_group,
+            public_developer_group,
+            guest_group
+          ]
+        )
+      end
+
+      context 'when search is provided' do
+        let(:group_arguments) { { search: 'maintainer' } }
+
+        specify do
+          is_expected.to match(
+            [
+              public_maintainer_group,
+              private_maintainer_group
+            ]
+          )
+        end
+      end
+    end
+
+    context 'when resolver object is different from current user' do
+      let(:current_user) { create(:user) }
+
+      it { is_expected.to be_nil }
+
+      context 'when current_user is admin' do
+        let(:current_user) { create(:user, :admin) }
+
+        before do
+          enable_admin_mode!(current_user)
+        end
+
+        specify do
+          is_expected.to match(
+            [
+              public_maintainer_group,
+              private_maintainer_group,
+              public_developer_group,
+              guest_group
+            ]
+          )
+        end
+      end
+    end
+  end
+
+  def resolve_groups(args:, current_user:, obj:)
+    resolve(described_class, args: args, ctx: { current_user: current_user }, obj: obj)&.items
+  end
+end

spec/graphql/types/merge_requests/reviewer_type_spec.rb

@@ -33,6 +33,7 @@ RSpec.describe GitlabSchema.types['MergeRequestReviewer'] do
       merge_request_interaction
       namespace
       timelogs
+      groups
     ]
 
     expect(described_class).to have_graphql_fields(*expected_fields)

spec/graphql/types/user_type_spec.rb

@@ -38,6 +38,7 @@ RSpec.describe GitlabSchema.types['User'] do
       callouts
       namespace
       timelogs
+      groups
     ]
 
     expect(described_class).to have_graphql_fields(*expected_fields)

spec/models/preloaders/user_max_access_level_in_groups_preloader_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Preloaders::UserMaxAccessLevelInGroupsPreloader do
+  let_it_be(:user) { create(:user) }
+  let_it_be(:group1) { create(:group, :private).tap { |g| g.add_developer(user) } }
+  let_it_be(:group2) { create(:group, :private).tap { |g| g.add_developer(user) } }
+  let_it_be(:group3) { create(:group, :private) }
+
+  let(:max_query_regex) { /SELECT MAX\("members"\."access_level"\).+/ }
+  let(:groups) { [group1, group2, group3] }
+
+  shared_examples 'executes N max member permission queries to the DB' do
+    it 'executes the specified max membership queries' do
+      queries = ActiveRecord::QueryRecorder.new do
+        groups.each { |group| user.can?(:read_group, group) }
+      end
+
+      max_queries = queries.log.grep(max_query_regex)
+
+      expect(max_queries.count).to eq(expected_query_count)
+    end
+  end
+
+  context 'when the preloader is used', :request_store do
+    before do
+      described_class.new(groups, user).execute
+    end
+
+    it_behaves_like 'executes N max member permission queries to the DB' do
+      # Will query all groups where the user is not already a member
+      let(:expected_query_count) { 1 }
+    end
+
+    context 'when user has access but is not a direct member of the group' do
+      let(:groups) { [group1, group2, group3, create(:group, :private, parent: group1)] }
+
+      it_behaves_like 'executes N max member permission queries to the DB' do
+        # One query for group with no access and another one where the user is not a direct member
+        let(:expected_query_count) { 2 }
+      end
+    end
+  end
+
+  context 'when the preloader is not used', :request_store do
+    it_behaves_like 'executes N max member permission queries to the DB' do
+      let(:expected_query_count) { groups.count }
+    end
+  end
+end

spec/policies/user_policy_spec.rb

@@ -3,8 +3,12 @@
 require 'spec_helper'
 
 RSpec.describe UserPolicy do
-  let(:current_user) { create(:user) }
-  let(:user) { create(:user) }
+  let_it_be(:admin) { create(:user, :admin) }
+  let_it_be(:regular_user) { create(:user) }
+  let_it_be(:subject_user) { create(:user) }
+
+  let(:current_user) { regular_user }
+  let(:user) { subject_user }
 
   subject { described_class.new(current_user, user) }
 
@@ -16,7 +20,7 @@ RSpec.describe UserPolicy do
     let(:token) { create(:personal_access_token, user: user) }
 
     context 'when user is admin' do
-      let(:current_user) { create(:user, :admin) }
+      let(:current_user) { admin }
 
       context 'when admin mode is enabled', :enable_admin_mode do
         it { is_expected.to be_allowed(:read_user_personal_access_tokens) }
@@ -42,7 +46,7 @@ RSpec.describe UserPolicy do
 
   describe "creating a different user's Personal Access Tokens" do
     context 'when current_user is admin' do
-      let(:current_user) { create(:user, :admin) }
+      let(:current_user) { admin }
 
       context 'when admin mode is enabled and current_user is not blocked', :enable_admin_mode do
         it { is_expected.to be_allowed(:create_user_personal_access_token) }
@@ -92,7 +96,7 @@ RSpec.describe UserPolicy do
     end
 
     context "when an admin user tries to destroy a regular user" do
-      let(:current_user) { create(:user, :admin) }
+      let(:current_user) { admin }
 
       context 'when admin mode is enabled', :enable_admin_mode do
         it { is_expected.to be_allowed(ability) }
@@ -104,7 +108,7 @@ RSpec.describe UserPolicy do
     end
 
     context "when an admin user tries to destroy a ghost user" do
-      let(:current_user) { create(:user, :admin) }
+      let(:current_user) { admin }
       let(:user) { create(:user, :ghost) }
 
       it { is_expected.not_to be_allowed(ability) }
@@ -132,7 +136,7 @@ RSpec.describe UserPolicy do
 
     context 'disabling the two-factor authentication of another user' do
       context 'when the executor is an admin', :enable_admin_mode do
-        let(:current_user) { create(:user, :admin) }
+        let(:current_user) { admin }
 
         it { is_expected.to be_allowed(:disable_two_factor) }
       end
@@ -145,7 +149,7 @@ RSpec.describe UserPolicy do
 
   describe "reading a user's group count" do
     context "when current_user is an admin", :enable_admin_mode do
-      let(:current_user) { create(:user, :admin) }
+      let(:current_user) { admin }
 
       it { is_expected.to be_allowed(:read_group_count) }
     end
@@ -172,4 +176,30 @@ RSpec.describe UserPolicy do
       it { is_expected.to be_allowed(:read_user_profile) }
     end
   end
+
+  describe ':read_user_groups' do
+    context 'when user is admin' do
+      let(:current_user) { admin }
+
+      context 'when admin mode is enabled', :enable_admin_mode do
+        it { is_expected.to be_allowed(:read_user_groups) }
+      end
+
+      context 'when admin mode is disabled' do
+        it { is_expected.not_to be_allowed(:read_user_groups) }
+      end
+    end
+
+    context 'when user is not an admin' do
+      context 'requesting their own manageable groups' do
+        subject { described_class.new(current_user, current_user) }
+
+        it { is_expected.to be_allowed(:read_user_groups) }
+      end
+
+      context "requesting a different user's manageable groups" do
+        it { is_expected.not_to be_allowed(:read_user_groups) }
+      end
+    end
+  end
 end

spec/requests/api/graphql/current_user/groups_query_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Query current user groups' do
+  include GraphqlHelpers
+
+  let_it_be(:user) { create(:user) }
+  let_it_be(:guest_group) { create(:group, name: 'public guest', path: 'public-guest') }
+  let_it_be(:private_maintainer_group) { create(:group, :private, name: 'b private maintainer', path: 'b-private-maintainer') }
+  let_it_be(:public_developer_group) { create(:group, :private, project_creation_level: nil, name: 'c public developer', path: 'c-public-developer') }
+  let_it_be(:public_maintainer_group) { create(:group, :private, name: 'a public maintainer', path: 'a-public-maintainer') }
+
+  let(:group_arguments) { {} }
+  let(:current_user) { user }
+
+  let(:fields) do
+    <<~GRAPHQL
+      nodes { id path fullPath name }
+    GRAPHQL
+  end
+
+  let(:query) do
+    graphql_query_for('currentUser', {}, query_graphql_field('groups', group_arguments, fields))
+  end
+
+  before_all do
+    guest_group.add_guest(user)
+    private_maintainer_group.add_maintainer(user)
+    public_developer_group.add_developer(user)
+    public_maintainer_group.add_maintainer(user)
+  end
+
+  subject { graphql_data.dig('currentUser', 'groups', 'nodes') }
+
+  before do
+    post_graphql(query, current_user: current_user)
+  end
+
+  it_behaves_like 'a working graphql query'
+
+  it 'avoids N+1 queries', :request_store do
+    control = ActiveRecord::QueryRecorder.new { post_graphql(query, current_user: current_user) }
+
+    new_group = create(:group, :private)
+    new_group.add_maintainer(current_user)
+
+    expect { post_graphql(query, current_user: current_user) }.not_to exceed_query_limit(control)
+  end
+
+  it 'returns all groups where the user is a direct member' do
+    is_expected.to match(
+      expected_group_hash(
+        public_maintainer_group,
+        private_maintainer_group,
+        public_developer_group,
+        guest_group
+      )
+    )
+  end
+
+  context 'when permission_scope is CREATE_PROJECTS' do
+    let(:group_arguments) { { permission_scope: :CREATE_PROJECTS } }
+
+    specify do
+      is_expected.to match(
+        expected_group_hash(
+          public_maintainer_group,
+          private_maintainer_group,
+          public_developer_group
+        )
+      )
+    end
+
+    context 'when search is provided' do
+      let(:group_arguments) { { permission_scope: :CREATE_PROJECTS, search: 'maintainer' } }
+
+      specify do
+        is_expected.to match(
+          expected_group_hash(
+            public_maintainer_group,
+            private_maintainer_group
+          )
+        )
+      end
+    end
+  end
+
+  context 'when search is provided' do
+    let(:group_arguments) { { search: 'maintainer' } }
+
+    specify do
+      is_expected.to match(
+        expected_group_hash(
+          public_maintainer_group,
+          private_maintainer_group
+        )
+      )
+    end
+  end
+
+  def expected_group_hash(*groups)
+    groups.map do |group|
+      {
+        'id' => group.to_global_id.to_s,
+        'name' => group.name,
+        'path' => group.path,
+        'fullPath' => group.full_path
+      }
+    end
+  end
+end