在rpec中檢查數組的長度（實例變量）

Question

在index方法中有2個數組，我想測試數組長度是否相等，但它不工作（手動測試後數組長度相等）

def index 
    @countries = get_countries() 
    @capitals = get_capitals() 
end 

Rspec的文件：

describe CountriesController do 
    describe 'index' do 
    it 'countries.length == capitals.length' do 
     expect(assigns(countries.length)).to eq (assigns(capitals.length)) 
    end 
    end 
end 

Answer 1

describe CountriesController do 
    describe 'index' do 
    it 'has a country for each capital' do 
     #create 3 countries here something like 
     3.times do 
     Country.create(capitol: :capitol) 
     end 

     get :index 

     expect(assigns(countries.length)).to eq (assigns(capitals.length)) 

    end 
    end 
end 

Answer 2

describe CountriesController do 
    describe 'index' do 
    it 'countries.length == capitals.length' do 
     expect(assigns(:countries).size).to eq (assigns(:capitals).size) 
    end 
    end 
end 

希望這有助於。