导轨和RSpec - 测试关注类方法 [英] Rails & RSpec - Testing Concerns class methods

问题描述

我有以下(简化的)Rails 问题:

I have the following (simplified) Rails Concern:

module HasTerms
  extend ActiveSupport::Concern

  module ClassMethods
    def optional_agreement
      # Attributes
      #----------------------------------------------------------------------------
      attr_accessible :agrees_to_terms
    end

    def required_agreement
      # Attributes
      #----------------------------------------------------------------------------
      attr_accessible :agrees_to_terms

      # Validations
      #----------------------------------------------------------------------------
      validates :agrees_to_terms, :acceptance => true, :allow_nil => :false, :on => :create
    end
  end
end

我想不出在 RSpec 中测试这个模块的好方法 - 如果我只是创建一个虚拟类，当我尝试检查验证是否有效时，我会收到活动记录错误.有其他人遇到过这个问题吗?

I can't figure out a good way to test this module in RSpec however - if I just create a dummy class, I get active record errors when I try to check that the validations are working. Has anyone else faced this problem?

推荐答案

查看 RSpec 共享示例.

这样你就可以写出以下内容:

This way you can write the following:

# spec/support/has_terms_tests.rb
shared_examples "has terms" do
   # Your tests here
end


# spec/wherever/has_terms_spec.rb
module TestTemps
  class HasTermsDouble
    include ActiveModel::Validations
    include HasTerms
  end
end

describe HasTerms do

  context "when included in a class" do
    subject(:with_terms) { TestTemps::HasTermsDouble.new }

    it_behaves_like "has terms"
  end

end


# spec/model/contract_spec.rb
describe Contract do

  it_behaves_like "has terms"

end

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