Factory bot with associations

FactoryBot.define do
  factory :user do
    sequence :email do |n|
      "sampleEmails#{n}@gmail.com"
    end
	
    password "secretPassword"
    password_confirmation "secretPassword"
  end

  factory :game do
    association :white_player, factory: :user
    association :black_player, factory: :user
  end
end

...
it "should return true because it is obstructed" do
  game = FactoryBot.create(:game)

  piece1 = game.pieces.create(position_x: 7, position_y: 7, game_id: game.id)
  piece2 = game.pieces.create(position_x: 7, position_y: 5, game_id: game.id)
  variable = piece1.is_obstructed?(game,[7,3])
  expect(variable).to eq(true)
end