Question

我是rails的新手，刚开始使用rspec版本编写测试：2.11.1。我正在寻找一种方法为我班上的不同测试种下不同的数据。为此，我在测试中创建了一个静态函数。根据我要求实例化不同数量的对象。我有一个函数seed_data，它根据传递给它的数字实例化不同数量的对象。我得到了这个例外：

NoMethodError: undefined method `seed_data' for #<RSpec::Core::ExampleGroup::Nested_1::Nested_5::Nested_1:0x007fcedd9bea70>

请查看以下示例代码：

require 'spec_helper'
require 'go_live_sale'
require 'rspec/expectations'

describe GoLiveSale do


  context "get_go_live_sale_for_sale_ids Function Correctness" do

    describe "Testing get_go_live_sale_for_sale_ids() function correctness " do
      it "should return error when sale_ids is blank" do
         result = GoLiveSale.get_go_live_sale_for_sale_ids({})
         result[:err].should_not be_blank
         result[:err].should  == "err1"
      end

      it "should return all columns corresponding to select field for single go_live_sale" do
        go_live_sales = seed_data(1)
        sale_ids =  go_live_sales.map{ |go_live_sale| go_live_sale.sale_id}
        result = GoLiveSale.get_go_live_sale_for_sale_ids({:sale_ids => sale_ids})
        result[:err].should be_blank
        result[:go_live_sales].count.should_be == 1
        delete_seed_data(go_live_sales)
      end

      it "should return all columns corresponding to select field for multiple go_live_sale" do
        go_live_sales = seed_data(2)
        sale_ids =  go_live_sales.map{ |go_live_sale| go_live_sale.sale_id}
        GoLiveSale.get_go_live_sale_for_sale_ids({:sale_ids => sale_ids})
        result[:err].should be_blank
        result[:message].should be_blank
        result[:go_live_sales].count.should == 2
        delete_seed_data(go_live_sales)
      end

      it "should return selected columns corresponding to select field for single go_live_sale" do
        go_live_sales = seed_data(1)
        sale_ids =  go_live_sales.map{ |go_live_sale| go_live_sale.sale_id}
        result = GoLiveSale.get_go_live_sale_for_sale_ids({:sale_ids => sale_ids, :columns => ["id","sale_id"]})
        result[:err].should be_blank
        result[:go_live_sales].count.should_be == 1
        delete_seed_data(go_live_sales)
      end

      it "should return selected columns corresponding to select field for multiple go_live_sale" do
        go_live_sales = seed_data(2)
        sale_ids =  go_live_sales.map{ |go_live_sale| go_live_sale.sale_id}
        GoLiveSale.get_go_live_sale_for_sale_ids({:sale_ids => sale_ids,  :columns => ["id","sale_id"]})
        result[:err].should be_blank
        result[:message].should be_blank
        result[:go_live_sales].count.should == 2
        delete_seed_data(go_live_sales)
      end

      it "should return error when selecting erroneous columns" do
        go_live_sales = seed_data(2)
        sale_ids =  go_live_sales.map{ |go_live_sale| go_live_sale.sale_id}
        GoLiveSale.get_go_live_sale_for_sale_ids({:sale_ids => sale_ids,  :columns => ["id","random_sale_id"]})
        result[:err].should_not be_blank
        delete_seed_data(go_live_sales)
      end

    end
  end
end

def self.delete_seed_data(go_live_sales)
  go_live_sales.each do |go_live_sale|
    go_live_sale.delete
  end
end

def self.seed_data(number_of_go_live_sale_to_create)
  go_live_sales =[]
  (1..number_of_go_live_sale_to_create).each do |number|
    go_live_sales.push(create_go_live_sale(number))
  end
  return go_live_sales
end

def self.create_go_live_sale(number_to_add)
  go_live_sale  =  GoLiveSale.new
  go_live_sale.start_date = Time.now
  go_live_sale.sale_id = Sale.select("IFNULL(max(id),0)+#{number_to_add} as sale_id").first.try(:sale_id)
  go_live_sale.sale_name = "Test Sale" + go_live_sale.sale_id.to_s
  go_live_sale.sale_type = "Flash Sale"+ go_live_sale.sale_id.to_s
  User.current_user = User.first
  go_live_sale.save
  return go_live_sale
end

RSpec::Matchers.define :be_valid do
  match_for_should do |actual|
    actual[:err].blank?
    actual[:validation_error].blank?
    actual[:is_valid] == true
  end

  match_for_should_not do |actual|
    actual[:err].present?
    actual[:validation_error].present?
    actual[:is_valid] == false
  end

  failure_message_for_should do |actual|
    "Expected validation to pass, but it failed"
  end

  failure_message_for_should_not do |actual|
    "Expected validation to fail, but it passed"
  end
end

我知道这是一个范围问题，或者rspec不允许你以这种方式编写测试。如果有人可以编写一小段代码来解释如何在这种情况下实例化测试数据，那将会很棒。我的rails版本是3.0.5。

Answer 1

您可以删除方法定义中的self.并将其移至describe GoLiveSale do块内，然后按预期使用seed_data调用它。

例如：

describe GoLiveSale do
  def my_method
  end
  context "some context" do
    it "should call my_method" do
      expect {my_method}.not_to raise_error
    end
  end
end

此规范应该通过。

为什么我无法在Rspec类中调用静态函数

1 个答案: