rspec控制器測試實例變量調用方法

Question

我想爲我繼承的ActiveAdmin控制器編寫測試，並且在檢查實例變量正在調用方法時遇到問題。我想要的行爲是調用方法的副作用，所以我想確保它被調用。

這裏的控制器：

ActiveAdmin.register User do 
    controller do 
    before_filter :get_user 

    def get_user 
     @user = User.find_by_login(params[:id]) 
     if !@user 
     flash[:notice] = "No user found with that login" 
     return false 
     end 
    end 

    end 
    member_action :tos_ban, :method => :post do 
    @user.ban!(current_user, "admin ban", 1) 
    flash[:notice] = "#{@user.display_name} successfully TOS Banned" 
    redirect_back 
    end 
end 

而且，我的規格：

require 'spec_helper' 

describe ActiveAdmin::UsersController do 
    render_views 
    let(:user) { FactoryGirl.create(:user, :admin => admin) } 
    let(:administrator) { FactoryGirl.create(:administrator) } 
    let(:banned_user) { FactoryGirl.create(:user) } 

    before(:each) do 
    login_as(user) 
    session[:last_admin_action_time] = Time.now 
    session[:current_admin_id] = administrator.id 
end 

    describe 'banning users' do 
    context 'as an administrator' do 
     let(:admin) { true } 

     before(:each) do 
     User.should_receive(:ban!).once   # I want something like this 
                # on @user in the controller 
     post :tos_ban, :id => banned_user.login 
     end 

     it 'bans the right user' do 
     assigns(:user).should eq(banned_user) 
     end 
    end 
    end 
end 

編輯：

所以，有點RTFMing後 - 通過RSpec的書 - 我發現我需要使用mocks：

it 'bans the user' do 
    banned_user = mock_model(User) 
    User.stub(:find_by_login).and_return(banned_user) 
    banned_user.should_receive(:ban!) 
    banned_user.should_receive(:display_name) 
    post :tos_ban, :id => banned_user.login 
end 

Answer 1

banned_user.should_receive(:ban!)

在您的控制器中，您將記錄（用戶實例）的引用分配給您的實例變量。你想引用那個實例（不是用戶對象和變量）來做出你的斷言。