Use ProjectMember access_level_roles for invite members modal

app/views/projects/_invite_members_modal.html.haml

@@ -2,6 +2,6 @@
   .js-invite-members-modal{ data: { id: project.id,
     name: project.name,
     is_project: 'true',
-    access_levels: GroupMember.access_level_roles.to_json,
+    access_levels: ProjectMember.access_level_roles.to_json,
     default_access_level: Gitlab::Access::GUEST,
     help_link: help_page_url('user/permissions') } }

spec/features/projects/members/list_spec.rb

@@ -11,7 +11,7 @@ RSpec.describe 'Project members list' do
   let(:project) { create(:project, namespace: group) }
 
   before do
-    stub_feature_flags(invite_members_group_modal: false)
+    stub_feature_flags(invite_members_group_modal: true)
 
     sign_in(user1)
     group.add_owner(user1)
@@ -60,13 +60,30 @@ RSpec.describe 'Project members list' do
     it 'add user to project', :js do
       visit_members_page
 
-      add_user(user2.id, 'Reporter')
+      add_user(user2.name, 'Reporter')
 
       page.within find_member_row(user2) do
         expect(page).to have_button('Reporter')
       end
     end
 
+    it 'uses ProjectMember access_level_roles for the invite members modal access option', :js do
+      visit_members_page
+
+      click_on 'Invite members'
+
+      click_on 'Guest'
+      wait_for_requests
+
+      page.within '.dropdown-menu' do
+        expect(page).to have_button('Guest')
+        expect(page).to have_button('Reporter')
+        expect(page).to have_button('Developer')
+        expect(page).to have_button('Maintainer')
+        expect(page).not_to have_button('Owner')
+      end
+    end
+
     it 'remove user from project', :js do
       other_user = create(:user)
       project.add_developer(other_user)
@@ -160,7 +177,7 @@ RSpec.describe 'Project members list' do
     it 'add user to project', :js do
       visit_members_page
 
-      add_user(user2.id, 'Reporter')
+      add_user(user2.name, 'Reporter')
 
       page.within(second_row) do
         expect(page).to have_content(user2.name)
@@ -222,12 +239,22 @@ RSpec.describe 'Project members list' do
   private
 
   def add_user(id, role)
-    page.within ".invite-users-form" do
-      select2(id, from: "#user_ids", multiple: true)
-      select(role, from: "access_level")
+    click_on 'Invite members'
+
+    page.within '#invite-members-modal' do
+      fill_in 'Search for members to invite', with: id
+
+      wait_for_requests
+      click_button id
+
+      click_button 'Guest'
+      wait_for_requests
+      click_button role
+
+      click_button 'Invite'
     end
 
-    click_button "Invite"
+    page.refresh
   end
 
   def visit_members_page