Create board list with milestone or assignee

using GraphQL

app/graphql/mutations/boards/lists/base.rb

@@ -8,7 +8,7 @@ module Mutations
 
         argument :board_id, ::Types::GlobalIDType[::Board],
                  required: true,
-                 description: 'The Global ID of the issue board to mutate'
+                 description: 'Global ID of the issue board to mutate'
 
         field :list,
               Types::BoardListType,

app/graphql/mutations/boards/lists/create.rb

@@ -12,7 +12,7 @@ module Mutations
 
         argument :label_id, ::Types::GlobalIDType[::Label],
                  required: false,
-                 description: 'ID of an existing label'
+                 description: 'Global ID of an existing label'
 
         def ready?(**args)
           if args.slice(*mutually_exclusive_args).size != 1
@@ -39,6 +39,7 @@ module Mutations
 
         private
 
+        # Overridden in EE
         def authorize_list_type_resource!(board, params)
           return unless params[:label_id]
 
@@ -57,13 +58,15 @@ module Mutations
           create_list_service.execute(board)
         end
 
+        # Overridden in EE
         def create_list_params(args)
           params = args.slice(*mutually_exclusive_args).with_indifferent_access
-          params[:label_id] = GitlabSchema.parse_gid(params[:label_id]).model_id if params[:label_id]
+          params[:label_id] &&= ::GitlabSchema.parse_gid(params[:label_id], expected_type: ::Label).model_id
 
           params
         end
 
+        # Overridden in EE
         def mutually_exclusive_args
           [:backlog, :label_id]
         end
@@ -71,3 +74,5 @@ module Mutations
     end
   end
 end
+
+Mutations::Boards::Lists::Create.prepend_if_ee('::EE::Mutations::Boards::Lists::Create')

doc/api/graphql/reference/gitlab_schema.graphql

@@ -1309,13 +1309,18 @@ type BoardListConnection {
 Autogenerated input type of BoardListCreate
 """
 input BoardListCreateInput {
+  """
+  Global ID of an existing user
+  """
+  assigneeId: UserID
+
   """
   Create the backlog list
   """
   backlog: Boolean
 
   """
-  The Global ID of the issue board to mutate
+  Global ID of the issue board to mutate
   """
   boardId: BoardID!
 
@@ -1325,9 +1330,14 @@ input BoardListCreateInput {
   clientMutationId: String
 
   """
-  ID of an existing label
+  Global ID of an existing label
   """
   labelId: LabelID
+
+  """
+  Global ID of an existing milestone
+  """
+  milestoneId: MilestoneID
 }
 
 """
@@ -17115,6 +17125,11 @@ type UserEdge {
   node: User
 }
 
+"""
+Identifier of User
+"""
+scalar UserID
+
 type UserPermissions {
   """
   Indicates the user can perform `create_snippet` on this resource

doc/api/graphql/reference/gitlab_schema.json

@@ -3505,7 +3505,7 @@
           "inputFields": [
             {
               "name": "boardId",
-              "description": "The Global ID of the issue board to mutate",
+              "description": "Global ID of the issue board to mutate",
               "type": {
                 "kind": "NON_NULL",
                 "name": null,
@@ -3529,7 +3529,7 @@
             },
             {
               "name": "labelId",
-              "description": "ID of an existing label",
+              "description": "Global ID of an existing label",
               "type": {
                 "kind": "SCALAR",
                 "name": "LabelID",
@@ -3537,6 +3537,26 @@
               },
               "defaultValue": null
             },
+            {
+              "name": "milestoneId",
+              "description": "Global ID of an existing milestone",
+              "type": {
+                "kind": "SCALAR",
+                "name": "MilestoneID",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
+            {
+              "name": "assigneeId",
+              "description": "Global ID of an existing user",
+              "type": {
+                "kind": "SCALAR",
+                "name": "UserID",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
             {
               "name": "clientMutationId",
               "description": "A unique identifier for the client performing the mutation.",
@@ -50327,6 +50347,16 @@
           "enumValues": null,
           "possibleTypes": null
         },
+        {
+          "kind": "SCALAR",
+          "name": "UserID",
+          "description": "Identifier of User",
+          "fields": null,
+          "inputFields": null,
+          "interfaces": null,
+          "enumValues": null,
+          "possibleTypes": null
+        },
         {
           "kind": "OBJECT",
           "name": "UserPermissions",

ee/app/graphql/ee/mutations/boards/lists/create.rb

+# frozen_string_literal: true
+
+module EE
+  module Mutations
+    module Boards
+      module Lists
+        module Create
+          extend ActiveSupport::Concern
+          extend ::Gitlab::Utils::Override
+
+          prepended do
+            argument :milestone_id, ::Types::GlobalIDType[::Milestone],
+                     required: false,
+                     description: 'Global ID of an existing milestone'
+            argument :assignee_id, ::Types::GlobalIDType[::User],
+                     required: false,
+                     description: 'Global ID of an existing user'
+          end
+
+          private
+
+          # rubocop: disable CodeReuse/ActiveRecord
+          override :authorize_list_type_resource!
+          def authorize_list_type_resource!(board, params)
+            super
+
+            if params[:milestone_id]
+              milestones = ::Boards::MilestonesFinder.new(board, current_user).execute
+
+              unless milestones.where(id: params[:milestone_id]).exists?
+                raise ::Gitlab::Graphql::Errors::ArgumentError, 'Milestone not found!'
+              end
+            end
+
+            if params[:assignee_id]
+              users = ::Boards::UsersFinder.new(board, current_user).execute
+
+              unless users.where(user_id: params[:assignee_id]).exists?
+                raise ::Gitlab::Graphql::Errors::ArgumentError, 'User not found!'
+              end
+            end
+          end
+          # rubocop: enable CodeReuse/ActiveRecord
+
+          override :create_list_params
+          def create_list_params(args)
+            params = super
+
+            params[:milestone_id] &&= ::GitlabSchema.parse_gid(params[:milestone_id], expected_type: ::Milestone).model_id
+            params[:assignee_id]  &&= ::GitlabSchema.parse_gid(params[:assignee_id], expected_type: ::User).model_id
+
+            params
+          end
+
+          override :mutually_exclusive_args
+          def mutually_exclusive_args
+            super + [:milestone_id, :assignee_id]
+          end
+        end
+      end
+    end
+  end
+end

ee/changelogs/unreleased/215533-graphql-create-board-list-milestone.yml

+---
+title: Allow milestone and assignee board lists to be created using GraphQL
+merge_request: 40551
+author:
+type: changed

ee/spec/graphql/ee/mutations/boards/lists/create_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Mutations::Boards::Lists::Create do
+  include GraphqlHelpers
+
+  let_it_be(:group)     { create(:group, :private) }
+  let_it_be(:board)     { create(:board, group: group) }
+  let_it_be(:milestone) { create(:milestone, group: group) }
+  let_it_be(:user)      { create(:user) }
+  let_it_be(:guest)     { create(:user) }
+
+  let(:current_user) { user }
+  let(:mutation) { described_class.new(object: nil, context: { current_user: current_user }, field: nil) }
+  let(:list_create_params) { {} }
+
+  before_all do
+    group.add_reporter(user)
+    group.add_guest(guest)
+  end
+
+  before do
+    stub_licensed_features(board_assignee_lists: true, board_milestone_lists: true)
+  end
+
+  subject { mutation.resolve(board_id: board.to_global_id.to_s, **list_create_params) }
+
+  describe '#ready?' do
+    it 'raises an error if required arguments are missing' do
+      expect { mutation.ready?({ board_id: 'some id' }) }
+        .to raise_error(Gitlab::Graphql::Errors::ArgumentError,
+                        'one and only one of backlog or labelId or milestoneId or assigneeId is required')
+    end
+
+    it 'raises an error if too many required arguments are specified' do
+      expect { mutation.ready?({ board_id: 'some id', milestone_id: 'some milestone', assignee_id: 'some label' }) }
+        .to raise_error(Gitlab::Graphql::Errors::ArgumentError,
+                        'one and only one of backlog or labelId or milestoneId or assigneeId is required')
+    end
+  end
+
+  describe '#resolve' do
+    context 'with proper permissions' do
+      describe 'milestone list' do
+        let(:list_create_params) { { milestone_id: milestone.to_global_id.to_s } }
+
+        context 'when feature unavailable' do
+          it 'returns an error' do
+            stub_licensed_features(board_milestone_lists: false)
+
+            expect(subject[:errors]).to include 'List type Milestone lists not available with your current license'
+          end
+        end
+
+        it 'creates a new issue board list for milestones' do
+          expect { subject }.to change { board.lists.count }.from(1).to(2)
+
+          new_list = subject[:list]
+
+          expect(new_list.title).to eq milestone.title
+          expect(new_list.milestone_id).to eq milestone.id
+          expect(new_list.position).to eq 0
+        end
+
+        context 'when milestone not found' do
+          let(:list_create_params) { { milestone_id: "gid://gitlab/Milestone/#{non_existing_record_id}" } }
+
+          it 'raises an error' do
+            expect { subject }
+              .to raise_error(Gitlab::Graphql::Errors::ArgumentError, 'Milestone not found!')
+          end
+        end
+      end
+
+      describe 'assignee list' do
+        let(:list_create_params) { { assignee_id: guest.to_global_id.to_s } }
+
+        context 'when feature unavailable' do
+          it 'returns an error' do
+            stub_licensed_features(board_assignee_lists: false)
+
+            expect(subject[:errors]).to include 'List type Assignee lists not available with your current license'
+          end
+        end
+
+        it 'creates a new issue board list for assignees' do
+          expect { subject }.to change { board.lists.count }.from(1).to(2)
+
+          new_list = subject[:list]
+
+          expect(new_list.title).to eq "@#{guest.username}"
+          expect(new_list.user_id).to eq guest.id
+          expect(new_list.position).to eq 0
+        end
+
+        context 'when user not found' do
+          let(:list_create_params) { { assignee_id: "gid://gitlab/User/#{non_existing_record_id}" } }
+
+          it 'raises an error' do
+            expect { subject }
+              .to raise_error(Gitlab::Graphql::Errors::ArgumentError, 'User not found!')
+          end
+        end
+      end
+    end
+
+    context 'without proper permissions' do
+      let(:current_user) { guest }
+
+      it 'raises an error' do
+        expect { subject }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+      end
+    end
+  end
+end

ee/spec/requests/api/graphql/mutations/boards/lists/create_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Create a milestone or assignee board list' do
+  include GraphqlHelpers
+
+  let_it_be(:group)     { create(:group, :private) }
+  let_it_be(:board)     { create(:board, group: group) }
+  let_it_be(:user)      { create(:user) }
+  let_it_be(:guest)     { create(:user) }
+  let_it_be(:milestone) { create(:milestone, group: group) }
+
+  let(:current_user) { user }
+  let(:mutation) { graphql_mutation(:board_list_create, input) }
+  let(:mutation_response) { graphql_mutation_response(:board_list_create) }
+
+  before do
+    stub_licensed_features(board_assignee_lists: true, board_milestone_lists: true)
+  end
+
+  context 'the user is not allowed to read board lists' do
+    let(:input) { { board_id: board.to_global_id.to_s, milestone_id: milestone.to_global_id.to_s } }
+
+    it_behaves_like 'a mutation that returns a top-level access error'
+  end
+
+  context 'when user has permissions to admin board lists' do
+    before do
+      group.add_reporter(current_user)
+      group.add_guest(guest)
+    end
+
+    describe 'milestone list' do
+      let(:input) { { board_id: board.to_global_id.to_s, milestone_id: milestone.to_global_id.to_s } }
+
+      it 'creates the list' do
+        post_graphql_mutation(mutation, current_user: current_user)
+
+        expect(response).to have_gitlab_http_status(:success)
+        expect(mutation_response['list'])
+          .to include('position' => 0, 'listType' => 'milestone',
+                      'milestone' => include('title' => milestone.title))
+      end
+    end
+
+    describe 'assignee list' do
+      let!(:input) { { board_id: board.to_global_id.to_s, assignee_id: guest.to_global_id.to_s } }
+
+      it 'creates the list' do
+        post_graphql_mutation(mutation, current_user: current_user)
+
+        expect(response).to have_gitlab_http_status(:success)
+        expect(mutation_response['list'])
+          .to include('position' => 0, 'listType' => 'assignee',
+                      'assignee' => include('id' => guest.to_global_id.to_s))
+      end
+    end
+  end
+end

spec/graphql/mutations/boards/lists/create_spec.rb

@@ -24,14 +24,12 @@ RSpec.describe Mutations::Boards::Lists::Create do
   describe '#ready?' do
     it 'raises an error if required arguments are missing' do
       expect { mutation.ready?({ board_id: 'some id' }) }
-        .to raise_error(Gitlab::Graphql::Errors::ArgumentError,
-                        'one and only one of backlog or labelId is required')
+        .to raise_error(Gitlab::Graphql::Errors::ArgumentError, /one and only one of/)
     end
 
     it 'raises an error if too many required arguments are specified' do
       expect { mutation.ready?({ board_id: 'some id', backlog: true, label_id: 'some label' }) }
-        .to raise_error(Gitlab::Graphql::Errors::ArgumentError,
-                        'one and only one of backlog or labelId is required')
+        .to raise_error(Gitlab::Graphql::Errors::ArgumentError, /one and only one of/)
     end
   end
 
@@ -66,6 +64,15 @@ RSpec.describe Mutations::Boards::Lists::Create do
           expect(new_list.title).to eq dev_label.title
           expect(new_list.position).to eq 0
         end
+
+        context 'when label not found' do
+          let(:list_create_params) { { label_id: "gid://gitlab/Label/#{non_existing_record_id}" } }
+
+          it 'raises an error' do
+            expect { subject }
+              .to raise_error(Gitlab::Graphql::Errors::ArgumentError, 'Label not found!')
+          end
+        end
       end
     end
 

spec/requests/api/graphql/mutations/boards/lists/create_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Create a label or backlog board list' do
+  include GraphqlHelpers
+
+  let_it_be(:group) { create(:group, :private) }
+  let_it_be(:board) { create(:board, group: group) }
+  let_it_be(:user)  { create(:user) }
+  let_it_be(:dev_label) do
+    create(:group_label, title: 'Development', color: '#FFAABB', group: group)
+  end
+
+  let(:current_user) { user }
+  let(:mutation) { graphql_mutation(:board_list_create, input) }
+  let(:mutation_response) { graphql_mutation_response(:board_list_create) }
+
+  context 'the user is not allowed to read board lists' do
+    let(:input) { { board_id: board.to_global_id.to_s, backlog: true } }
+
+    it_behaves_like 'a mutation that returns a top-level access error'
+  end
+
+  context 'when user has permissions to admin board lists' do
+    before do
+      group.add_reporter(current_user)
+    end
+
+    describe 'backlog list' do
+      let(:input) { { board_id: board.to_global_id.to_s, backlog: true } }
+
+      it 'creates the list' do
+        post_graphql_mutation(mutation, current_user: current_user)
+
+        expect(response).to have_gitlab_http_status(:success)
+        expect(mutation_response['list'])
+          .to include('position' => nil, 'listType' => 'backlog')
+      end
+    end
+
+    describe 'label list' do
+      let(:input) { { board_id: board.to_global_id.to_s, label_id: dev_label.to_global_id.to_s } }
+
+      it 'creates the list' do
+        post_graphql_mutation(mutation, current_user: current_user)
+
+        expect(response).to have_gitlab_http_status(:success)
+        expect(mutation_response['list'])
+          .to include('position' => 0, 'listType' => 'label', 'label' => include('title' => 'Development'))
+      end
+    end
+  end
+end