Ruby on rails 模块方法未定义方法的rspec测试委托

此模块包含在rails中的表单对象中

使用rspec测试它的正确方法是什么

1） 我是否直接在包含它的每个模型上测试它

或

2） 我是否直接测试委托方法？（如果可能的话，我更喜欢直达）

如果我直接测试，如何测试？我试图得到下面的错误

窗体对象模块 窗体对象 RSPEC测试 错误 失败/错误： 注册：：基本：：ActAsDelegation.delegate_字段_to（：用户，：地址）

---

（在本例中，我还有其他代码问题，但下面解决了主要问题）

由于您的模块被设计为包含在测试中，只需将其包含在一个空类中即可。我准备了一个简化的示例，我验证了该示例的有效性：

module ToBeIncluded
  def self.included(base)
    base.extend(ClassMethods)
  end

  module ClassMethods
    def a_class_method
      :class
    end
  end
end

class TestSubject
  include ToBeIncluded
end

require 'rspec/core'

RSpec.describe ToBeIncluded do
  subject { TestSubject }

  it 'returns correct symbol' do
    expect(subject.a_class_method).to eq(:class)
  end
end

在您的情况下，可能沿着这些思路的一些东西应该是好的：

require "rails_helper"

RSpec.describe Registration::Base::ActAsDelegation, type: :model do
  class TestClass
    include Registration::Base::ActAsDelegation
  end

  describe "Class Methods" do
    context "#delegate_fields_to" do
      let(:user) {spy('user')}
      let(:address) {spy('address')}
      let(:delegation_fields) {          [ 
            {name: :first, model: :user},
            {name: :address, model: :address}
          ]}

      it "should delegate" do
        allow(TestClass).to receive(:form_fields_mapping) { delegation_fields }
        TestClass.delegate_fields_to(:user,:address)
        expect(user).to have_received(:first)
        expect(address).to have_received(:address)
      end
    end
  end
end

---

此外，如果您担心名称冲突，您可以创建匿名类。

失败/错误：expect（user）。接收（：first）（双“user”）。first（*（任意参数））预期：收到任何参数1次：收到任何参数0次那么什么是匿名类？您不应该调用类似于

TestClass.new的东西吗。首先

，然后检查它是否委托给

用户

？是的，在实际代码中已更正，现在一切正常。非常感谢。

require "rails_helper"

RSpec.describe Registration::Base::ActAsDelegation, type: :model do

  describe "Class Methods" do
    context "#delegate_fields_to" do
      let(:user) {spy('user')}
      let(:address) {spy('address')}
      let(:delegation_fields) {          [ 
            {name: :first, model: :user},
            {name: :address, model: :address}
          ]}

      it "should delegate" do
        allow(subject).to receive(:form_fields_mapping) { delegation_fields }
        Registration::Base::ActAsDelegation.delegate_fields_to(:user,:address)
        expect(user).to have_received(:first)
        expect(address).to have_received(:address)
      end
    end
  end
end

 NoMethodError:
   undefined method `delegate_fields_to' for Registration::Base::ActAsDelegation:Module
   Did you mean?  delegate_missing_to

module ToBeIncluded
  def self.included(base)
    base.extend(ClassMethods)
  end

  module ClassMethods
    def a_class_method
      :class
    end
  end
end

class TestSubject
  include ToBeIncluded
end

require 'rspec/core'

RSpec.describe ToBeIncluded do
  subject { TestSubject }

  it 'returns correct symbol' do
    expect(subject.a_class_method).to eq(:class)
  end
end

require "rails_helper"

RSpec.describe Registration::Base::ActAsDelegation, type: :model do
  class TestClass
    include Registration::Base::ActAsDelegation
  end

  describe "Class Methods" do
    context "#delegate_fields_to" do
      let(:user) {spy('user')}
      let(:address) {spy('address')}
      let(:delegation_fields) {          [ 
            {name: :first, model: :user},
            {name: :address, model: :address}
          ]}

      it "should delegate" do
        allow(TestClass).to receive(:form_fields_mapping) { delegation_fields }
        TestClass.delegate_fields_to(:user,:address)
        expect(user).to have_received(:first)
        expect(address).to have_received(:address)
      end
    end
  end
end