參數數量錯誤（Sinatra-rspec）

Question

我有一個Sinatra應用程序（試圖學習使用rspec的基本測試），並希望為此方法編寫測試：

 # application_controller.rb
def active_page?(path)
  request.path_info == path
end

我的測試是

require File.expand_path '../../spec_helper.rb', __FILE__

describe "My Application Controller" do
  it "should validate the current page path" do
    get "/home"
    active_page?("/home").should eq true
  end
end

我得到的錯誤是

.F

Failures:

1) My Application Controller should validate the current page path
 Failure/Error: expect(active_page?("/home")).to be true

 ArgumentError:
   wrong number of arguments (given 0, expected 1..2)
 # /Users/deepthought/.rvm/gems/ruby-2.4.2/gems/rack-test-1.0.0/lib/rack/test.rb:116:in `request'
 # ./controllers/application_controller.rb:15:in `active_page?'
 # ./spec/controllers/application_controller_spec.rb:12:in `block (2 levels) in <top (required)>'

Finished in 0.02004 seconds (files took 0.45736 seconds to load)
1 example, 1 failure

Failed examples:

rspec ./spec/controllers/application_controller_spec.rb:10 # My Application Controller should validate the current page path

該方法本身似乎可以在應用程序中很好地工作，但是我想編寫一個僅用於學習目的的測試。

一開始我嘗試過：

expect(active_page?("/home")).to eq true

但是我仍然遇到同樣的錯誤。

我如何通過考試？

Answer 1

嘗試這個：

describe ApplicationController do
  it "should validate the current page path" do
    get "home"
    expect(controller.active_page?("/home")).to be true
  end
end

Answer 2

從規范來看，由於已處理get，因此您無法訪問請求，但可以訪問last_request。 我會像這樣更改代碼

application_controller.rb

def active_page?(requested, path)
  requested.path_info == path
end

測試

require File.expand_path '../../spec_helper.rb', __FILE__

describe "My Application Controller" do
  it "should validate the current page path" do
    get "/home"
    active_page?(last_request, "/home").should eq true
  end
end

然后，形成控制器，您將調用以下方法：active_page？（請求，“ / home”）