Rspec失败，因为名称已被使用

Question

我正在尝试制作rspec测试用例。 但是，Rspec失败，因为已经使用了Name。

每次调用“产品”时，似乎都会评估“让”。

我该如何解决？

安慰

./spec/models/spree/product_decorator_spec.rb:31:in `block (4 levels) in <top (required)>'

ActiveRecord::RecordInvalid: Validation failed: Name has already been taken
./spec/models/spree/product_decorator_spec.rb:6:in `block (3 levels) in <top (required)>'
./spec/models/spree/product_decorator_spec.rb:20:in `block (4 levels) in <top (required)>'
./spec/models/spree/product_decorator_spec.rb:23:in `block (4 levels) in <top (required)>'

ActiveRecord::RecordInvalid: Validation failed: Name has already been taken
./spec/models/spree/product_decorator_spec.rb:6:in `block (3 levels) in <top (required)>'
./spec/models/spree/product_decorator_spec.rb:12:in `block (4 levels) in <top (required)>'
./spec/models/spree/product_decorator_spec.rb:15:in `block (4 levels) in <top (required)>'

product_decorator_spec.rb

require 'spec_helper'

describe Spree::Product do

  context '#create' do
    let(:us) { create(:zone, name: "US") }
    let(:china) { create(:zone, name: "China") }
    let(:japan) { create(:zone, name: "Japan") }


    context "when a product has no ng zone" do
      let(:product) { create(:product, zones: [us, china, japan]) }

      it "should get ng_zones correctly" do
        product.ng_zones.should match_array []
      end
    end

    context "when a product has one ng zone" do
      let(:product) { create(:product, zones: [us, china]) }

      it "should get ng_zones correctly" do
        product.ng_zones.should match_array ["Japan"]
      end
    end

    context "when a product has two ng zone" do
      let(:product) { create(:product, zones: [us]) }

      it "should get ng_zones correctly" do
        product.ng_zones.should match_array ["China", "Japan"]
      end
    end
  end
end

Answer 1

let的主体将与每个it块一起评估。 我假设您在Zone类上具有唯一性约束。

你有两种可能性

• 要么在before(:all)块中构建变量， before(:all)将其分配给类似@us
• after(:each)清理数据库

Answer 2

您正在测试Product#create因此，您无需为该特定测试真正创建zones 。

相反，您可以只使用build_stubbed方法。

let(:us) { build_stubbed(:zone, name: "US") }
let(:china) { build_stubbed(:zone, name: "China") }
let(:japan) { build_stubbed(:zone, name: "Japan") }

这样，它的创建过程将不再依赖数据库以及Zone模型的验证，并且由于没有为每个测试命中db，因此性能得到了极大的提高。

您可以在此处阅读有关build_stubbed 信息 。

请让我知道它是否对您有帮助。 ;）