ruby-on-rails – 测试Rspec时的FactoryGirl和belongs_to协会

class Team < ActiveRecord::Base
  # Setup accessible (or protected) attributes for your model
  attr_accessible :name
  validates_presence_of :name

  belongs_to :user

end

哪个经过测试：

describe Team do

  before(:each) do
    @attr = FactoryGirl.attributes_for(:team)
  end

  it "should belong to a user" do
    @team = Team.create!(@attr)
    @team.should belong_to(:user)
  end
end

我有以下工厂：

FactoryGirl.define do
  factory :team do
    name 'Dream Team'
    sport
    user
  end
end

FactoryGirl.define do
  factory :user do
    name 'Test User'
    last_name 'Last Name'
    email 'example@example.com'
    password 'changeme'
    password_confirmation 'changeme'
  end
end

当我测试规范时,我得到以下失败：

1) Team should belong to a user
Failure/Error: @team = Team.create!(@attr)
ActiveRecord::StatementInvalid:
SQLite3::ConstraintException: teams.user_id may not be NULL: INSERT INTO “teams” (“created_at”,“name”,“sport_id”,“updated_at”,
“user_id”) VALUES (?,?,?)

这是为什么？在文档中,它表示要设置关联,您只需编写工厂名称,在我的情况下是用户.

谢谢