相當於Sinatra的Rspec render_template？

Question

我正在構建一個Sinatra應用程序，目前它將輸出JSON模板作爲API的一部分。當軌道和RSpec的護欄寶石檢測，我能夠撥打：

response.should render_template('template-name') 

但是因爲我沒有使用Rails的我假設這是行不通的。有什麼替代品用於Sinatra測試json輸出？謝謝！

Answer 1

有一些docs on using Rack Test with RSpec here，但這是我如何設置我的東西了。通過將應用程序包裝在模塊的類方法中，它使得在規範中運行起來更容易，然後通過last_response.body（這是對您的問題的簡短回答）驗證響應。

# config.ru 

require 'rubygems' 
require "bundler/setup" 

root = File.expand_path File.dirname(__FILE__) 
require File.join(root , "./app/config.rb") 

# everything was moved into a separate module/file 
# to make it easier to set up tests 

map "/" do 
    run HelloWorld.app 
end 

---

# app/config.rb 
require 'main' 

module HelloWorld 
    def self.app 
    Rack::Builder.app do 
     # middleware setup here, cookies etc 
     run App 
    end 
    end 
end 

---

# app/main.rb 
require 'sinatra/base' 

module HelloWorld 
    class App < Sinatra::Base 
    get "/", :provides => :json do 
     {key: "value"}.to_json 
    end 
    end 
end 

---

# spec/spec_helper.rb 

require 'rspec' 
Spec_dir = File.expand_path(File.dirname __FILE__) 

require 'rack/test' 

Dir[ File.join(Spec_dir, "/support/**/*.rb")].each do |f| 
    require f 
end 

---

# spec/support/shared/all_routes.rb 

require 'hello_world' # <-- your sinatra app 

shared_context "All routes" do 
    include Rack::Test::Methods 
    let(:app){ 
    HelloWorld.app 
    } 
end 

shared_examples_for "Any route" do 
    subject { last_response } 
    it { should be_ok } 
end 

---

# spec/hello_world_spec.rb 
require 'spec_helper' 

describe 'getting some JSON' do 
    include_context "All pages" 

    let(:expected) { 
    '{"key": "value"}' 
    } 

    before do 
    get '/', {}, {"HTTP_ACCEPT" => "application/json" } 
    end 
    it_should_behave_like "Any route" 

    subject { last_response.body } 
    it { should == expected } 
end