Rspec失敗，因為名稱已被使用

Question

我正在嘗試制作rspec測試用例。 但是，Rspec失敗，因為已經使用了Name。

每次調用“產品”時，似乎都會評估“讓”。

我該如何解決？

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的主體將與每個it塊一起評估。 我假設您在Zone類上具有唯一性約束。

你有兩種可能性

• 要么在before(:all)塊中構建變量， before(:all)將其分配給類似@us
• after(:each)清理數據庫

Answer 2

您正在測試Product#create因此，您無需為該特定測試真正創建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") }

這樣，它的創建過程將不再依賴數據庫以及Zone模型的驗證，並且由於沒有為每個測試命中db，因此性能得到了極大的提高。

您可以在此處閱讀有關build_stubbed 信息 。

請讓我知道它是否對您有幫助。 ;）