fix failing tests

app/controllers/client_api/users/user_teams_controller.rb

@@ -49,6 +49,7 @@ module ClientApi
       private
 
       def check_leave_team_permission
+        return unless params[:user_team]
         user_team = UserTeam.find_by_id(params[:user_team])
         unless current_user == user_team.user || can_read_team?(user_team.team)
           respond_422(t('client_api.permission_error'))

app/services/client_api/user_team_service.rb

@@ -24,6 +24,7 @@ module ClientApi
     end
 
     def update_role!
+      raise ClientApi::CustomUserTeamError if user_cant_leave?
       unless @role
         raise ClientApi::CustomUserTeamError,
               I18n.t('client_api.generic_error_message')

spec/controllers/client_api/users/user_teams_controller_spec.rb

@@ -35,10 +35,10 @@ describe ClientApi::Users::UserTeamsController, type: :controller do
 
   describe 'POST #update_role' do
     it 'should return HTTP success if user can leave the team' do
-      user_team_two = create :user_team, team: team, user: user_two, role: 2
+      create :user_team, team: team, user: user_two, role: 2
       post :update_role,
            params: { team: team.id,
-                     user_team: user_team_two.id,
+                     user_team: user_team.id,
                      role: 'normal_user' },
            format: :json
       expect(response).to be_success