Rspec忽略唯一性验证

Question

我不希望rspec允许我用相同的名称保存类的两个对象，但它确实允许。我缺了什么吗？

我的型号：

class Product < ActiveRecord::Base
  validates :title, :description, :image_url, presence: true
  validates :price, numericality: {greater_than_or_equal_to: 0.01}
  validates :title, uniqueness: true
  validates :image_url, allow_blank: true, format: {
    with: %r{.(gif|jpg|png)Z}i,
    message: 'must be a URL for GIF, JPG or PNG image'
  }
end

我的测试：

describe "when creating products with identical names" do
    let(:book1) { FactoryGirl.create(:product, title: 'identical') }
    let(:book2) { FactoryGirl.build(:product, title: 'identical') }
    it "raises unique validation error" do
        expect(book2).not_to be_valid
    end
end

这就是我得到的：

1) Product when creating products with identical names raises unique validation error
     Failure/Error: expect(book2).not_to be_valid
       expected #<Product id: nil, title: "identical", description: "Some crazy wibbles, that are fun", image_url: "freddie_mercury.jpg", price: #<BigDecimal:7f995cdd1358,'0.5699E2',18(27)>, created_at: nil, updated_at: nil> not to be valid

我甚至可以写两次FactoryGirl.create，它只是保存。

然而，如果我切换到rails控制台并尝试创建两个具有两个相同名称的对象，我会收到一个错误。我的测试环境有问题吗？

Answer 1

好吧，book1不是在测试运行中创建的。。。考虑更改：

describe "when creating products with identical names" do
  let(:book1) { FactoryGirl.create(:product, title: 'identical') }
  let(:book2) { FactoryGirl.build(:product, title: 'identical') }
  it "raises unique validation error" do
    expect(book2).not_to be_valid
  end
end

至

describe "when creating products with identical names" do
  let(:book) { FactoryGirl.build(:product, title: 'identical') }
  before do
    FactoryGirl.create(:product, title: 'identical')
  end
  it "raises unique validation error" do
    expect(book).not_to be_valid
  end
end

这应该会有所帮助！祝你好运