Rspecs“#its”方法的主题是什么

Question

当您在rspec中使用其方法时，如下所示its(:code) { should eql(0)}“它”指的是什么。

我有以下的规范工作正常

describe AdminlwController do 

    shared_examples_for "valid status" do 
    it { should be_an_instance_of(Api::SoapStatus) } 
    it "should have a code of 0" do 
     subject.code.should eql(0) 
    end 
    it "should have an empty errors array" do 
     subject.errors.should be_an(Array) 
     subject.errors.should be_empty 
    end 
    #its(:code) { should eql(0)} 
    end 

    describe "Countries API Reply" do 
    before :each do 
     co1 = Factory(:country) 
     co2 = Factory(:country) 
     @result = invoke :GetCountryList, "empty_auth" 
    end 

    subject { @result } 
    it { should be_an_instance_of(Api::GetCountryListReply) } 

    describe "Country List" do 
     subject {@result.country_list} 
     it { should be_an_instance_of(Array) } 
     it { should have(2).items } 
     it "should have countries in the list" do 
     subject.each {|c| c.should be_an_instance_of(Api::Country)} 
     end 
    end 

    describe "result status" do 
     subject { @result.status } 
     it_should_behave_like "valid status" 
    end 
    end 

但是，如果我再取消注释与its(:code)那么该行我得到以下输出

 
AdminlwController Countries API Reply 
- should be an instance of Api::GetCountryListReply 

AdminlwController Countries API Reply Country List 
- should be an instance of Array 
- should have 2 items 
- should have countries in the list 

AdminlwController Countries API Reply result status 
- should be an instance of Api::SoapStatus 
- should have a code of 0 
- should have an empty errors array 

AdminlwController Countries API Reply result status code 
- should be empty (FAILED - 1) 

1) 
NoMethodError in 'AdminlwController Countries API Reply result status code should be empty' 
undefined method code for <AdminlwController:0x40fc4dc> 
/Users/steveweet/romad_current/romad/spec/controllers/adminlw_controller_spec.rb:29: 

Finished in 0.741599 seconds 

8 examples, 1 failure 

看来，如果“它”是指到整个测试的主题，即AdminLwController而不是当前主题。

我做错了什么或者这是一个Rspec奇怪吗？

Answer 1

在写its的地方使用该主题。它不受对代码进一步重新定义主题的影响。