ruby-on-rails - 测试 Rspec 时 FactoryGirl 和belongs_to 关联

Question

我有以下模型:

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

  belongs_to :user

end

由以下人员测试:

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，它说要设置关联，您可以只写工厂名称，在我的情况下是用户。

谢谢

Answer 1

FactoryGirl.attributes_for会给你一个只包含指定模型属性的哈希，不包括关联属性——在你的情况下，user_id .

如果 user_id 会抛出错误是必填字段，您正在尝试创建 Team 的实例通过使用 FactoryGirl.create(attributes_for(:team)) .

但是，如果您使用 FactoryGirl.create(:team)它应该给你一个有效的 Team 实例.