机架测试失败：JSON 请求还没有响应

Question

我正在尝试按照 Yehuda Katz 的书 Rails 3 in Action 第 13 章中提供的 Ticketee 示例为我的 Ruby 项目创建 JSON API。这是第 353 页中描述的适用于我的环境的 RSpec 测试。

# /spec/api/v1/farms_spec.rb # Reduced to the minimum code.
require "spec_helper"
include ApiHelper # not sure if I need this

describe "/api/v1/farms", type: :api do
    context "farms viewable by this user" do
        let(:url) { "/api/v1/farms" }
        it "json" do
            get "#{url}.json"
            assert last_response.ok?
        end
    end
end

当我运行测试时，我得到以下输出...

$ rspec spec/api/v1/farms_spec.rb
No DRb server is running. Running in local process instead ...
Run options: include {:focus=>true}

All examples were filtered out; ignoring {:focus=>true}
  1) /api/v1/farms farms viewable by this user json
     Failure/Error: assert last_response.ok?
     Rack::Test::Error:
       No response yet. Request a page first.
     # ./spec/api/v1/farms_spec.rb:30:in `block (3 levels) in <top (required)>'

Finished in 2.29 seconds
1 example, 1 failure

这是我使用的辅助模块...

# /support/api/helper.rb
module ApiHelper
    include Rack::Test::Methods

    def app
        Rails.application
    end
end

RSpec.configure do |config|
    config.include ApiHelper, type: :api
end

注意：这个问题类似于Testing REST-API responses with Rspec and Rack::Test。

Answer 1

Rspec-rails 似乎忽略了 describe 块的 type: :api 参数，并将 /spec/api 中的所有规范视为请求规范 (see chapter request specs here)。也许类型参数已被弃用？我还没有找到它的任何文档..

当使用 type: :request 而不是 type: :api 时，我可以让您的示例正常工作。我还删除了 app-method，因为它已默认包含在 RequestExampleGroup 中。

# /support/api/helper.rb
module ApiHelper
    include Rack::Test::Methods
end

RSpec.configure do |config|
    config.include ApiHelper, type: :request
end

以及规格：

#/spec/api/v1/farms_spec.rb 
require "spec_helper"

describe "/api/v1/farms" do
    context "farms viewable by this user" do
        let(:url) { "/api/v1/farms" }
        it "json" do
            get "#{url}.json"
            assert last_response.ok?
        end
    end
end