ruby-on-rails - 如何为 MiniTest 包含模块

Question

我有课Company那include GrowthRate .

模型/公司.rb

class Company < ActiveRecord::Base
  include GrowthRate
end

在 growth_rate.rb ，我为 Array添加了一些方法.

模型/公司/growth_rate.rb

module Company::GrowthRate
  extend ActiveSupport::Concern
end

module Company::GrowthRate::Array
  def growth_rate
    # calculate growth rate
  end
end

class Array
  include Company::GrowthRate::Array
end

我想通过MiniTest测试Array的方法。

测试/模型/公司/growth_rate_test.rb

require 'test_helper'

class CompanyTest < ActiveSupport::TestCase
  include Company::GrowthRate
  test 'test for adjusted_growth_rate' do
    array = [1, 0.9]
    Array.stub :growth_rate, 1 do
      # assert_equal
    end
  end
end

但测试以名称错误结束。

NameError: undefined method `growth_rate' for `Company::GrowthRate::Array'

如何包含 MiniTest 的方法？

测试/test_helper.rb

ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)
require 'rails/test_help'
require 'minitest/mock'
class ActiveSupport::TestCase
  # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
  fixtures :all
end

Answer 1

您需要使用 ActiveSupport包含 block 。

对于您的示例，我想它找不到您在任何地方都不需要该文件的方法 b/c。

module PolymorphicTest
  extend ActiveSupport::Concern

  included do
    test 'some cool polymorphic test' do
      assert private_helper_method
    end


    private

    def private_helper_method
      # do stuff
    end
  end
end

Minitest 也不会自动加载这些，因此您需要确保它们包含在 require 中。在每个测试或 test_helper 中。

如果您需要我进一步分解，请询问。