Cant seed data in test_helper.rb

Seems loading seed data not work for me

my test_helper.rb file:

ENV['RAILS_ENV'] ||= 'test'
require_relative '../config/environment'
require 'rails/test_help'

class ActiveSupport::TestCase
  fixtures :all
  Rails.application.load_seed
end

In rails console Rails.application.load_seed works fine